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GB/T 44568-2024Thermal insulating materials - Determination of compressive creep (English PDF)

保温材料压缩蠕变的测定

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

September 29, 2024

Implementation date

April 1, 2025

Scope

GB/T 44568-2024 is the English-translated version of 保温材料压缩蠕变的测定.

GB/T 44568-2024 is the Chinese national standard for the determination of compressive creep of thermal insulating materials, equivalent to ISO 20392:2007. It describes a test method for finding the compressive creep behaviour of insulation materials under different stress conditions.

The standard has a scope, normative references and terms and definitions that include thickness among the defined quantities, and it applies to the determination of this property for thermal insulation materials.

The only editorial change recorded is an added note about a point in Appendix B. The document follows the drafting rules of GB/T 1.1-2020. Issued on 29 September 2024 and applicable from 1 April 2025, it replaces no earlier edition.

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Document preview — GB/T 44568-2024

National Standard of the People's Republic of China

ICS: 83.100
Classification: G 31

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is equivalent to ISO 20392:2007 "Determination of compression creep of thermal insulation materials". The following minimal editorial changes were made to this document.

--- Added a note about "point" in Appendix B.

1 Scope

This document describes a test method for determining the compressive creep properties of thermal insulation materials under different stress conditions.

This document is applicable to the determination of thermal insulation materials.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. properties)

Note: GB/T 8813-2020 Determination of compression properties of rigid cellular plastics (ISO 844:2014, IDT) lineardimensions)

Note: GB/T 6342-1996 Determination of linear dimensions of cellular plastics and rubber (idtISO 1923.1981)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Thickness

A linear dimension perpendicular to the plane defined by the length and width.

3.1.1 Thickness

The original thickness of the product.

3.1.2 Thickness

Initial thickness of the specimen.

3.1.3 Thickness

The thickness of the specimen under the compressive stress (self-weight) of the loading device.

3.1.4 Thickness

Thickness of the specimen after loading for 60 seconds.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 12 pages — is available in the English PDF.

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