ASTM C1482-23
(Specification)Standard Specification for Polyimide Flexible Cellular Thermal and Sound Absorbing Insulation
Standard Specification for Polyimide Flexible Cellular Thermal and Sound Absorbing Insulation
ABSTRACT
This specification covers the composition and physical properties of lightweight, flexible open-cell polyimide foam insulation intended for use as thermal and sound-absorbing insulation for a certain temperature range in commercial and industrial environments. The insulations are classified into the following types: Types I, II, III, IV, V, and VI. Polyimide foam shall be manufactured from the appropriate monomers, and necessary compounding ingredients. Different test methods shall be performed in order to determine the following properties of the insulation: density, apparent thermal conductivity, upper temperature limit, high temperature stability, compressive strength, compression deflection, compression set, steam aging, corrosiveness, chemical resistance, surface burning characteristics, radiant panel surface flammability, vertical burn, heat release rate, specific optical smoke density, hydrogen halides in smoke, toxic gas generation, and sound absorption coefficients.
SCOPE
1.1 This specification covers the composition and physical properties of lightweight, flexible open-cell polyimide foam insulation intended for use as thermal and sound-absorbing insulation for temperatures from –328°F up to +572°F (–200°C and +300°C) in commercial and industrial environments.
1.1.1 Annex A1 includes faced polyimide foam as specified by the U.S. Navy for marine applications.
1.1.2 This standard is designed as a material specification and not a design document. Physical property requirements vary by application and temperature. No single test is adequate for estimating either the minimum or maximum use temperature of polyimide foam under all possible conditions. Consult the manufacturer for specific recommendations and physical properties for specific applications.
1.1.3 The use of an appropriate vapor retarder is required in all applications where condensation could occur and cause a decrease in thermal performance or affect other system properties.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire-hazard or fire-risk assessment of the materials, products, or assemblies under actual fire conditions.
Note 1: The subject matter of this material specification is not covered by any other ASTM specification. There is no known ISO standard covering the subject of this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1482 − 23
Standard Specification for
Polyimide Flexible Cellular Thermal and Sound Absorbing
1
Insulation
This standard is issued under the fixed designation C1482; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 This specification covers the composition and physical
1.5 This international standard was developed in accor-
properties of lightweight, flexible open-cell polyimide foam
dance with internationally recognized principles on standard-
insulation intended for use as thermal and sound-absorbing
ization established in the Decision on Principles for the
insulation for temperatures from –328°F up to +572°F (–200°C
Development of International Standards, Guides and Recom-
and +300°C) in commercial and industrial environments.
mendations issued by the World Trade Organization Technical
1.1.1 Annex A1 includes faced polyimide foam as specified
Barriers to Trade (TBT) Committee.
by the U.S. Navy for marine applications.
1.1.2 This standard is designed as a material specification
2. Referenced Documents
and not a design document. Physical property requirements
2
2.1 ASTM Standards:
vary by application and temperature. No single test is adequate
C165 Test Method for Measuring Compressive Properties of
for estimating either the minimum or maximum use tempera-
Thermal Insulations
ture of polyimide foam under all possible conditions. Consult
C168 Terminology Relating to Thermal Insulation
the manufacturer for specific recommendations and physical
C177 Test Method for Steady-State Heat Flux Measure-
properties for specific applications.
ments and Thermal Transmission Properties by Means of
1.1.3 The use of an appropriate vapor retarder is required in
the Guarded-Hot-Plate Apparatus
all applications where condensation could occur and cause a
C302 Test Method for Density and Dimensions of Pre-
decrease in thermal performance or affect other system prop-
formed Pipe-Covering-Type Thermal Insulation
erties.
C335 Test Method for Steady-State Heat Transfer Properties
1.2 The values stated in inch-pound units are to be regarded
of Pipe Insulation
as standard. The values given in parentheses are mathematical
C390 Practice for Sampling and Acceptance of Thermal
conversions to SI units that are provided for information only
Insulation Lots
and are not considered standard.
C411 Test Method for Hot-Surface Performance of High-
Temperature Thermal Insulation
1.3 This standard is used to measure and describe the
C421 Test Method for Tumbling Friability of Preformed
response of materials, products, or assemblies to heat and flame
Block-Type and Preformed Pipe-Covering-Type Thermal
under controlled conditions, but does not by itself incorporate
Insulation
all factors required for fire-hazard or fire-risk assessment of the
C423 Test Method for Sound Absorption and Sound Absorp-
materials, products, or assemblies under actual fire conditions.
tion Coefficients by the Reverberation Room Method
NOTE 1—The subject matter of this material specification is not covered
C447 Practice for Estimating the Maximum Use Tempera-
by any other ASTM specification. There is no known ISO standard
ture of Thermal Insulations
covering the subject of this standard.
C518 Test Method for Steady-State Thermal Transmission
1.4 This standard does not purport to address all of the
Properties by Means of the Heat Flow Meter Apparatus
safety concerns, if any, associated with its use. It is the
C585 Practice for Inner and Outer Diameters of Thermal
responsibility of the user of this standard to establish appro-
Insulation for Nominal Sizes of Pipe and Tubing
C634 Terminology Relating to Building and Environmental
Acoustics
1
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
2
Organic and Nonhomogeneous Inorganic Thermal Insulations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2023. Published March 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2000. Last previous edition approved in 2017 as C1482 – 17. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1482-23. the ASTM website.
Copyright © ASTM International
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1482 − 17 C1482 − 23
Standard Specification for
Polyimide Flexible Cellular Thermal and Sound Absorbing
1
Insulation
This standard is issued under the fixed designation C1482; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers the composition and physical properties of lightweight, flexible open-cell polyimide foam insulation
intended for use as thermal and sound-absorbing insulation for temperatures from –328°F up to +572°F (–200°C and +300°C) in
commercial and industrial environments.
1.1.1 Annex A1 includes faced polyimide foam as specified by the U.S. Navy for marine applications.
1.1.2 This standard is designed as a material specification and not a design document. Physical property requirements vary by
application and temperature. No single test is adequate for estimating either the minimum or maximum use temperature of
polyimide foam under all possible conditions. Consult the manufacturer for specific recommendations and physical properties for
specific applications.
1.1.3 The use of an appropriate vapor retarder is required in all applications where condensation could occur and cause a decrease
in thermal performance or affect other system properties.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under
controlled conditions, but does not by itself incorporate all factors required for fire-hazard or fire-risk assessment of the materials,
products, or assemblies under actual fire conditions.
NOTE 1—The subject matter of this material specification is not covered by any other ASTM specification. There is no known ISO standard covering the
subject of this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
NOTE 1—The subject matter of this material specification is not covered by any other ASTM specification. There is no known ISO standard covering the
subject of this standard.
1
This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on Organic and
Nonhomogeneous Inorganic Thermal Insulations.
Current edition approved Sept. 1, 2017March 1, 2023. Published September 2017March 2023. Originally approved in 2000. Last previous edition approved in 20122017
as C1482 – 12.C1482 – 17. DOI: 10.1520/C1482-17.10.1520/C1482-23.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1482 − 23
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
C165 Test Method for Measuring Compressive Properties of Thermal Insulations
C168 Terminology Relating to Thermal Insulation
C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus
C302 Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal Insulation
C335 Test Method for Steady-State Heat Transfer Properties of Pipe Insulation
C390 Practice for Sampling and Acceptance of Thermal Insulation Lots
C411 Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation
C421 Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal Insulation
C423 Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
C447 Practice for Estimating the Maximum Use Temperature of Thermal Insulations
C518 Test Method for Ste
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1482 − 23
Standard Specification for
Polyimide Flexible Cellular Thermal and Sound Absorbing
1
Insulation
This standard is issued under the fixed designation C1482; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 This specification covers the composition and physical
1.5 This international standard was developed in accor-
properties of lightweight, flexible open-cell polyimide foam
dance with internationally recognized principles on standard-
insulation intended for use as thermal and sound-absorbing
ization established in the Decision on Principles for the
insulation for temperatures from –328°F up to +572°F (–200°C
Development of International Standards, Guides and Recom-
and +300°C) in commercial and industrial environments.
mendations issued by the World Trade Organization Technical
1.1.1 Annex A1 includes faced polyimide foam as specified
Barriers to Trade (TBT) Committee.
by the U.S. Navy for marine applications.
1.1.2 This standard is designed as a material specification
2. Referenced Documents
and not a design document. Physical property requirements
2
2.1 ASTM Standards:
vary by application and temperature. No single test is adequate
C165 Test Method for Measuring Compressive Properties of
for estimating either the minimum or maximum use tempera-
Thermal Insulations
ture of polyimide foam under all possible conditions. Consult
C168 Terminology Relating to Thermal Insulation
the manufacturer for specific recommendations and physical
C177 Test Method for Steady-State Heat Flux Measure-
properties for specific applications.
ments and Thermal Transmission Properties by Means of
1.1.3 The use of an appropriate vapor retarder is required in
the Guarded-Hot-Plate Apparatus
all applications where condensation could occur and cause a
C302 Test Method for Density and Dimensions of Pre-
decrease in thermal performance or affect other system prop-
formed Pipe-Covering-Type Thermal Insulation
erties.
C335 Test Method for Steady-State Heat Transfer Properties
1.2 The values stated in inch-pound units are to be regarded
of Pipe Insulation
as standard. The values given in parentheses are mathematical
C390 Practice for Sampling and Acceptance of Thermal
conversions to SI units that are provided for information only
Insulation Lots
and are not considered standard.
C411 Test Method for Hot-Surface Performance of High-
Temperature Thermal Insulation
1.3 This standard is used to measure and describe the
C421 Test Method for Tumbling Friability of Preformed
response of materials, products, or assemblies to heat and flame
Block-Type and Preformed Pipe-Covering-Type Thermal
under controlled conditions, but does not by itself incorporate
Insulation
all factors required for fire-hazard or fire-risk assessment of the
C423 Test Method for Sound Absorption and Sound Absorp-
materials, products, or assemblies under actual fire conditions.
tion Coefficients by the Reverberation Room Method
NOTE 1—The subject matter of this material specification is not covered
C447 Practice for Estimating the Maximum Use Tempera-
by any other ASTM specification. There is no known ISO standard
ture of Thermal Insulations
covering the subject of this standard.
C518 Test Method for Steady-State Thermal Transmission
1.4 This standard does not purport to address all of the
Properties by Means of the Heat Flow Meter Apparatus
safety concerns, if any, associated with its use. It is the
C585 Practice for Inner and Outer Diameters of Thermal
responsibility of the user of this standard to establish appro-
Insulation for Nominal Sizes of Pipe and Tubing
C634 Terminology Relating to Building and Environmental
Acoustics
1
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
2
Organic and Nonhomogeneous Inorganic Thermal Insulations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2023. Published March 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2000. Last previous edition approved in 2017 as C1482 – 17. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1482-23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 --------------------
...
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