Thermal insulation products -- Aerogel blanket for buildings -- Specification

This document specifies the requirements for factory-made aerogel blankets, which are used for the thermal insulation of building applications. This document specifies insulation that exhibits thermal insulating performance through high porosity and nano-sized pores by compounding aerogel with net-like fibrous material, e.g. polyester, glass fibre, ceramic fibre. The products are delivered as a blanket type. This document describes product characteristics and includes procedures for testing, evaluation of conformity and marking and labelling. This document does not specify the required level of a given property to be achieved by a product to demonstrate fitness for purpose in a particular application.Â

Produits isolants thermiques -- Aérogels en matelas pour les bâtiments -- Spécifications

General Information

Status
Published
Publication Date
08-Dec-2021
Current Stage
5060 - Close of voting Proof returned by Secretariat
Start Date
28-Oct-2021
Completion Date
27-Oct-2021
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INTERNATIONAL ISO
STANDARD 22482
First edition
2021-12
Thermal insulation products —
Aerogel blanket for buildings —
Specification
Produits isolants thermiques — Aérogels en matelas pour les
bâtiments — Spécifications
Reference number
ISO 22482:2021(E)
© ISO 2021
---------------------- Page: 1 ----------------------
ISO 22482:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 22482:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction .................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms, definitions, symbols and abbreviated terms .................................................................................................... 2

3.1 Terms and definitions ...................................................................................................................................................................... 2

3.2 Symbols and units ............................................................................................................................................................................... 2

3.3 Abbreviated terms .............................................................................................................................................................................. 2

3.3.1 Abbreviated terms ............................................................................................................................................................ 2

3.3.2 Abbreviated terms for declared properties ............................................................................................... 3

4 Requirements .......................................................................................................................................................................................................... 3

4.1 General ........................................................................................................................................................................................................... 3

4.2 For all applications .............................................................................................................................................................................. 3

4.2.1 Linear dimensions ........................................................................................................................................... .................. 3

4.2.2 Density ........................................................................................................................................................................................ 4

4.2.3 Thermal conductivity .................................................................................................................................................... 4

4.3 Specific applications .......................................................................................................................................................................... 4

4.3.1 Reaction to fire..................................................................................................................................................................... 4

4.3.2 Water absorption ............................................................................................................................................................... 4

4.3.3 Compressive strength .................................................................................................................................................... 4

4.3.4 Corrosiveness to steel .................................................................................................................................................... 5

4.3.5 Resistance to fungi ........................................................................................................................................................... 5

4.3.6 Flexibility .................................................................................................................................................................................. 5

5 Test methods ............................................................................................................................................................................................................ 5

5.1 Sampling ....................................................................................................................................................................................................... 5

5.2 Conditioning.............................................................................................................................................................................................. 6

5.3 Testing ............................................................................................................................................................................................................ 6

5.3.1 General ........................................................................................................................................................................................ 6

5.3.2 Thermal conductivity .................................................................................................................................................... 6

6 Designation code ...................................................................... ............................................................................................................................ 7

7 Evaluation of conformity ........................................................................................................................................... ..................................7

8 Marking and labelling .................................................................................................................................................................................... 7

Annex A (normative) Factory production control ................................................................................................................................. 9

Annex B (normative) Determination of the aged values of thermal conductivity due

to moisture ..............................................................................................................................................................................................................10

Annex C (normative) Determination of the thermal conductivity in relation to moisture

content .........................................................................................................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................14

iii
© ISO 2021 – All rights reserved
---------------------- Page: 3 ----------------------
ISO 22482:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use

in the built environment, Subcommittee SC 3, Thermal insulation products, components and systems.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 22482:2021(E)
Introduction

Aerogel insulations are widely used globally because of their superior properties including ease of

handling and effective insulating performance. Testing of aerogel insulation to meet sustainable

construction needs provides users with a basis for choosing the insulation.
© ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 22482:2021(E)
Thermal insulation products — Aerogel blanket for
buildings — Specification
1 Scope

This document specifies the requirements for factory-made aerogel blankets, which are used for the

thermal insulation of building applications. This document specifies insulation that exhibits thermal

insulating performance through high porosity and nano-sized pores by compounding aerogel with net-

like fibrous material, e.g. polyester, glass fibre, ceramic fibre. The products are delivered as a blanket

type.

This document describes product characteristics and includes procedures for testing, evaluation of

conformity and marking and labelling.

This document does not specify the required level of a given property to be achieved by a product to

demonstrate fitness for purpose in a particular application.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 846:2019, Plastics — Evaluation of the action of microorganisms

ISO 8301, Thermal insulation — Determination of steady-state thermal resistance and related properties

— Heat flow meter apparatus

ISO 8302, Thermal insulation — Determination of steady-state thermal resistance and related properties

— Guarded hot plate apparatus

ISO 10456, Building materials and products — Hygrothermal properties — Tabulated design values and

procedures for determining declared and design thermal values

ISO 12576-1, Thermal insulation — Insulating materials and products for buildings — Conformity control

systems — Part 1: Factory-made products

ISO 12624, Thermal insulating products for building equipment and industrial installations —

Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH

ISO 16535, Thermal insulating products for building applications — Determination of long-term water

absorption by immersion

ISO 29465, Thermal insulating products for building applications — Determination of length and width

ISO 29466, Thermal insulating products for building applications — Determination of thickness

ISO 29469, Thermal insulating products for building applications — Determination of compression

behaviour

ISO 29470, Thermal insulating products for building applications — Determination of the apparent density

ISO 29767, Thermal insulating products for building applications — Determination of short-term water

absorption by partial immersion
© ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 22482:2021(E)
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Terms and definitions
3.1.1
aerogel

insulating material that has high porosity derived from a nanoporous structure formed by replacement

of the liquid component of a gel with air
3.1.2
aerogel blanket

aerogel insulation which has been made into a blanket by combining aerogel (3.1.1) with a flexible

matrix material as carrier
3.2 Symbols and units
Symbol Quantity Unit
b width mm
L length mm
t thickness mm
λ thermal conductivity W/(m·K)
Δλ ageing increment of thermal conductivity (λ - λ ) W/(m·K)
a a i
λ declared thermal conductivity as determined by ISO 10456, and W/(m·K)
expressed with two significant digits
λ time averaged value of thermal conductivity over 25 years W/(m·K)
λ mean thermal conductivity W/(m·K)
mean
λ mean of the aged values of thermal conductivity W/(m·K)
mean,a
λ mean of the initial values of thermal conductivity W/(m·K)
mean,i
λ 90 % fractile with a confidence level of 90 % for the thermal W/(m·K)
90/90
conductivity
k factor related to the number of test results of aged thermal -
conductivity
k factor related to the number of test results of initial thermal -
conductivity
s estimate of the standard deviation of the thermal conductivity W/(m·K)
s estimate of the standard deviation of the aged values of thermal W/(m·K)
λ,a
conductivity
s estimate of the standard deviation of the initial values of ther- W/(m·K)
λ,i
mal conductivity
3.3 Abbreviated terms
3.3.1 Abbreviated terms
Abbreviated term Meaning
ABI Aerogel blanket insulation
© ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 22482:2021(E)
Abbreviated term Meaning
ITT Initial type test
FPC Factory production control
3.3.2 Abbreviated terms for declared properties
Abbreviated term Declared property
CS(Y) Declared level for compressive strength
CS(10) Declared level for compressive strength at 10 % deformation
Cl Declared level for chloride content
T Declared level for thickness
4 Requirements
4.1 General

Product properties shall be assessed in accordance with Clause 5. To be in conformance with this

document, products shall meet the requirements of 4.2 and 4.3, as appropriate.

The test methods for determination of each property are given in Table 5, which also shows the required

test specimen dimensions and the minimum number of test specimens required to give one test result.

One test result for a product property is the average of the measured values on the number of test

specimens given in Table 5.
4.2 For all applications
4.2.1 Linear dimensions

Length and width shall be measured in accordance with ISO 29465 for each of the four specimens.

A minimum of four measurements shall be made for each dimension. Each value shall be within the

tolerances specified in Table 1.

The thickness of aerogel insulation shall be measured in accordance with ISO 29466 by using a square

plate under pressure of not less than 250 Pa and shall be subject to the tolerances detailed in Table 1.

The pressure employed during measurement shall be disclosed.

Tighter tolerances can be necessary for certain applications; this shall be agreed to by the supplier and

purchaser.
Table 1 — Dimensional tolerances
Length Width Thickness
(%) (%) (%)
±5 ±5 T1 −0 / +3
T2 −0 / +5
T3 −0 / +10
T4 −0 / +15
T5 −0 / +20

If more restrictive tolerances are required, these shall be agreed between purchaser and supplier.

© ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
ISO 22482:2021(E)
4.2.2 Density
Density shall be determined in accordance with ISO 29470 in each
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 22482
ISO/TC 163/SC 3
Thermal insulation products —
Secretariat: SCC
Aerogel blankets for buildings —
Voting begins on:
2021­09­01 Determination of physical properties
Voting terminates on:
2021­10­27
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 22482:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 22482:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH­1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 22482:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions, symbols and abbreviated terms ....................................................................................................... 2

3.1 Terms and definitions ....................................................................................................................................................................... 2

3.2 Symbols and units ................................................................................................................................................................................ 2

3.3 Abbreviated terms ............................................................................................................................................................................... 2

3.3.1 Abbreviated terms .......................................................................................................................................................... 2

3.3.2 Abbreviated terms for declared properties .............................................................................................. 3

4 Requirements .......................................................................................................................................................................................................... 3

4.1 General ........................................................................................................................................................................................................... 3

4.2 For all applications .............................................................................................................................................................................. 3

4.2.1 Linear dimensions .......................................................................................................................................................... 3

4.2.2 Density ...................................................................................................................................................................................... 4

4.2.3 Thermal conductivity ........................................................................................................................................... ........ 4

4.3 Specific applications ........................................................................................................................................................................... 4

4.3.1 Reaction to fire .................................................................................................................................................................. 4

4.3.2 Water absorption ...................................................................... ....................................................................................... 4

4.3.3 Compressive strength .................................................................................................................................................. 4

4.3.4 Corrosiveness to steel .................................................................................................................................................. 5

4.3.5 Resistance to fungi ......................................................................................................................................................... 5

4.3.6 Flexibility ................................................................................................................................................................................ 5

5 Test methods ............................................................................................................................................................................................................. 5

5.1 Sampling ....................................................................................................................................................................................................... 5

5.2 Conditioning .............................................................................................................................................................................................. 6

5.3 Testing ............................................................................................................................................................................................................ 6

5.3.1 General...................................................................................................................................................................................... 6

5.3.2 Thermal conductivity ........................................................................................................................................... ........ 6

6 Designation code .................................................................................................................................................................................................. 7

7 Evaluation of conformity .............................................................................................................................................................................. 7

8 Marking and labelling ..................................................................................................................................................................................... 7

Annex A (normative) Factory production control .................................................................................................................................. 9

Annex B (normative) Determination of the aged values of thermal conductivity due to moisture .10

Annex C (normative) Determination of the thermal conductivity in relation to moisture content 12

Bibliography .............................................................................................................................................................................................................................14

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 22482:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non­governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use

in the built environment, Subcommittee SC 3, Thermal insulation products, components and systems.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/FDIS 22482:2021(E)
Introduction

Aerogel insulations are widely used globally because of their superior properties including ease of

handling and effective insulating performance. Testing of aerogel insulation to meet sustainable

construction needs provides users with a basis for choosing the insulation.
© ISO 2021 – All rights reserved v
---------------------- Page: 5 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 22482:2021(E)
Thermal insulation products — Aerogel blankets for
buildings — Determination of physical properties
1 Scope

This document specifies the requirements for factory-made aerogel blankets, which are used for the

thermal insulation of building applications. This document specifies insulation that exhibits thermal

insulating performance through high porosity and nano-sized pores by compounding aerogel with net-

like fibrous material, e.g. polyester, glass fibre, ceramic fibre. The products are delivered as a blanket

type.

This document describes product characteristics and includes procedures for testing, evaluation of

conformity and marking and labelling.

This document does not specify the required level of a given property to be achieved by a product to

demonstrate fitness for purpose in a particular application.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 846:2019, Plastics — Evaluation of the action of microorganisms

ISO 8301, Thermal insulation — Determination of steady-state thermal resistance and related properties —

Heat flow meter apparatus

ISO 8302, Thermal insulation — Determination of steady-state thermal resistance and related properties —

Guarded hot plate apparatus

ISO 10456, Building materials and products — Hygrothermal properties — Tabulated design values and

procedures for determining declared and design thermal values

ISO 12576­1, Thermal insulation — Insulating materials and products for buildings — Conformity control

systems — Part 1: Factory-made products

ISO 12624, Thermal insulating products for building equipment and industrial installations —

Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH

ISO 16535, Thermal insulating products for building applications — Determination of long-term water

absorption by immersion

ISO 29465, Thermal insulating products for building applications — Determination of length and width

ISO 29466, Thermal insulating products for building applications — Determination of thickness

ISO 29469, Thermal insulating products for building applications — Determination of compression

behaviour

ISO 29470, Thermal insulating products for building applications — Determination of the apparent density

ISO 29767, Thermal insulating products for building applications — Determination of short-term water

absorption by partial immersion
© ISO 2021 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO/FDIS 22482:2021(E)
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Terms and definitions
3.1.1
aerogel

insulating material that has high porosity derived from a nanoporous structure formed by replacement

of the liquid component of a gel with air
3.1.2
aerogel blanket

aerogel insulation which has been made into a blanket by combining aerogel (3.1.1) with a flexible

matrix material as carrier
3.2 Symbols and units
Symbol Quantity Unit
b width mm
L length mm
t thickness mm
λ thermal conductivity W/(m·K)
Δλ ageing increment of thermal conductivity (λ ­ λ ) W/(m·K)
a a i
λ declared thermal conductivity as determined by ISO 10456, and W/(m·K)
expressed with two significant digits
λ time averaged value of thermal conductivity over 25 years W/(m·K)
λ mean thermal conductivity W/(m·K)
mean
λ mean of the aged values of thermal conductivity W/(m·K)
mean,a
λ mean of the initial values of thermal conductivity W/(m·K)
mean,i
λ 90 % fractile with a confidence level of 90 % for the thermal W/(m·K)
90/90
conductivity
k factor related to the number of test results of aged thermal ­
conductivity
k factor related to the number of test results of initial thermal ­
conductivity
s estimate of the standard deviation of the thermal conductivity W/(m·K)
s estimate of the standard deviation of the aged values of thermal W/(m·K)
λ,a
conductivity
s estimate of the standard deviation of the initial values of ther­ W/(m·K)
λ,i
mal conductivity
3.3 Abbreviated terms
3.3.1 Abbreviated terms
Abbreviated term Meaning
ABI Aerogel blanket insulation
2 © ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/FDIS 22482:2021(E)
Abbreviated term Meaning
ITT Initial type test
FPC Factory production control
3.3.2 Abbreviated terms for declared properties
Abbreviated term Declared property
CS(Y) Declared level for compressive strength
CS(10) Declared level for compressive strength at 10 % deformation
Cl Declared level for chloride content
T Declared level for thickness
4 Requirements
4.1 General

Product properties shall be assessed in accordance with Clause 5. To be in conformance with this

document, products shall meet the requirements of 4.2 and 4.3, as appropriate.

The test methods for determination of each property are given in Table 5, which also shows the required

test specimen dimensions and the minimum number of test specimens required to give one test result.

One test result for a product property is the average of the measured values on the number of test

specimens given in Table 5.
4.2 For all applications
4.2.1 Linear dimensions

Length and width shall be measured in accordance with ISO 29465 for each of the four specimens.

A minimum of four measurements shall be made for each dimension. Each value shall be within the

tolerances specified in Table 1.

The thickness of aerogel insulation shall be measured in accordance with ISO 29466 by using a square

plate under pressure of not less than 250 Pa and shall be subject to the tolerances detailed in Table 1.

The pressure employed during measurement shall be disclosed.

Tighter tolerances can be necessary for certain applications; this shall be agreed to by the supplier and

purchaser.
Table 1 — Dimensional tolerances
Length Width Thickness
(%) (%) (%)
±5 ±5 T1 −0 / +3
T2 −0 / +5
T3 −0 / +10
T4 −0 / +15
T5 −0 / +20

If more restrictive tolerances are required, these shall be agreed between purchaser and supplier.

© ISO 2021 – All rights reserved 3
---------------------- Page: 8 ----------------------
ISO/FDIS 22482:2021(E)
4.2.2 Density
Densi
...

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