ASTM C1303-07
(Test Method)Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
SCOPE
1.1 This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen thickness to accelerate aging under controlled laboratory conditions () .
1.2 Rigid gas-filled closed-cell foam insulation includes all cellular plastic insulations manufactured with the intent to retain a blowing agent other than air.
1.3 This test method is limited to unfaced or permeably faced, homogeneous materials. This method is applied to a wide range of rigid closed-cell foam insulation types, including but not limited to: extruded polystyrene, polyurethane, polyisocyanurate, and phenolic. This test method does not apply to impermeably faced rigid closed-cell foams or to rigid closed-cell bun stock foams.Note 1
See Note 0 for more details regarding the applicability of this test method to rigid closed-cell bun stock foams.
1.4 This test method utilizes referenced standard test procedures for measuring thermal resistance. Periodic measurements are performed on specimens to observe the effects of aging. Specimens of reduced thickness (that is, thin slices) are used to shorten the time required for these observations. The results of these measurements are used to predict the long-term thermal resistance of the material.
1.5 The test method is given in two parts. The Prescriptive Method in Part A provides long-term thermal resistance values on a consistent basis that can be used for a variety of purposes, including product evaluation, specifications, or product comparisons. The Research Method in part B provides a general relationship between thermal conductivity, age, and product thickness.
1.5.1 To use the Prescriptive Method, the date of manufacture must be known, which usually involves the cooperation of the manufacturer.
1.6 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:C1303–07
Standard Test Method for
Predicting Long-Term Thermal Resistance of Closed-Cell
1
Foam Insulation
This standard is issued under the fixed designation C 1303; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 1.6 The values stated in SI units are to be regarded as the
standard. The inch-pound values given in parentheses are for
1.1 This test method covers a procedure for predicting the
information only.
long-term thermal resistance (LTTR) of unfaced or permeably
1.7 This standard does not purport to address all of the
faced rigid gas-filled closed-cell foam insulations by reducing
safety concerns, if any, associated with its use. It is the
the specimen thickness to accelerate aging under controlled
2
responsibility of the user of this standard to establish appro-
laboratory conditions (1-5) .
priate safety and health practices and determine the applica-
1.2 Rigid gas-filled closed-cell foam insulation includes all
bility of regulatory limitations prior to use.
cellular plastic insulations manufactured with the intent to
1.8 Table of Contents:
retain a blowing agent other than air.
Section
1.3 This test method is limited to unfaced or permeably
Scope 1
faced, homogeneous materials. This method is applied to a
Reference Documents 2
widerangeofrigidclosed-cellfoaminsulationtypes,including
Terminology 3
Summary of Test Method 4
but not limited to: extruded polystyrene, polyurethane, poly-
Significance and Use 5
isocyanurate, and phenolic. This test method does not apply to
Part A: The Prescriptive Method 6
impermeably faced rigid closed-cell foams or to rigid closed- Applicability 6.1
Qualification Requirements 6.1.1
cell bun stock foams.
Facing Permeability 6.1.2
Apparatus 6.2
NOTE 1—See Note 5 for more details regarding the applicability of this
Sampling 6.3
test method to rigid closed-cell bun stock foams.
Schedule 6.3.1
Representative Replicate Product Sheets 6.3.2
1.4 This test method utilizes referenced standard test proce-
Replicate Test Specimen Sets 6.3.3
duresformeasuringthermalresistance.Periodicmeasurements
Specimen Preparation 6.4
are performed on specimens to observe the effects of aging.
Goal 6.4.1
Schedule 6.4.2
Specimens of reduced thickness (that is, thin slices) are used to
Specimen Extraction 6.4.3
shorten the time required for these observations. The results of
Slice Flatness 6.4.4
these measurements are used to predict the long-term thermal
Slice Thickness 6.4.5
Stack Composition 6.4.6
resistance of the material.
Storage Conditioning 6.5
1.5 The test method is given in two parts. The Prescriptive
Test Procedure 6.6
Method in PartAprovides long-term thermal resistance values
Thermal Resistance Measurement Schedule 6.6.1
Thermal Resistance Measurements 6.6.2
on a consistent basis that can be used for a variety of purposes,
Product Density 6.6.3
including product evaluation, specifications, or product com-
Calculations 6.7
parisons. The Research Method in part B provides a general
Part B: The Research Method 7
Background 7.1
relationship between thermal conductivity, age, and product
TDSLApparatus 7.2
thickness.
Sampling Schedule 7.3
1.5.1 To use the Prescriptive Method, the date of manufac-
Specimen Preparation 7.4
Storage Conditioning 7.5
ture must be known, which usually involves the cooperation of
Test Procedure 7.6
the manufacturer.
Calculations 7.7
Reporting 8
Reporting for Part A, the Prescriptive Method 8.1
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC16onThermal Reporting for Part B, the Research Method 8.2
Precision and Bias 9
Insulation and is the direct responsibility of Subcommittee C16.30 on Thermal
Keywords 10
Measurement.
Mandatory Information – Qualification Annex A1
Current edition approved Feb. 15, 2007. Published February 2007. Originally
Specimen Preparation A1.1
approved in 1995. Last previous edition approved in 2000 as C 1303 – 00.
2
Homogeneity Qualification A1.2
The boldface numbers in parentheses refer to the list of references at the end of
Aging Equivalence Test Procedure A1.3
this standard.
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C1303–07
3. Terminology
Alternate Product Thickness Qualification A1.4.1
Mandatory Information-Preparation of Test Annex A2
3.1 Definitions—For definitions of terms and symbols used
Specimens for Spray-Foam Products
in this test method, refer to Terminology C 168.
Effect Of TDSL Appendix
X1
3.2 Definitions of Terms Specific to This Standard:
History of the Standard Appen
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