GB/T 9640-2008: Flexible and rigid cellular polymeric materials -- Accelerated ageing tests

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Scope

This Standard specifies, for flexible and rigid cellular polymeric materials, laboratory
procedures which are intended to imitate the effects of naturally occurring reactions
such as oxidation or hydrolysis by humidity. The physical properties of interest are
measured before and after the application of the specified treatments.
Test conditions are only given for open cellular latex, both open- and closed-ceil
polyurethane foams, and closed-cell polyolefin foams. Conditions for other materials
will be added as required.
Note: The effect of the ageing procedures on any of the physical properties of the
material may be examined, but those normally tested are either the elongation
and tensile properties, or the compression or indentation hardness properties.
These tests do not necessarily correlate either with service behaviour or with
ageing by exposure to light.

Basic Data

Standard ID	GB/T 9640-2008 (GB/T9640-2008)
Description (Translated English)	Flexible and rigid cellular polymeric materials -- Accelerated ageing tests
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.080.01
Word Count Estimation	6,682
Date of Issue	2008-08-19
Date of Implementation	2009-05-01
Older Standard (superseded by this standard)	GB/T 9640-1988
Quoted Standard	GB/T 2941-2006
Adopted Standard	ISO 2440-1997, IDT
Regulation (derived from)	National Standard Approval Announcement 2008 No.14 (Total No.127)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies test methods for simulation of soft and rigid cellular polymeric materials in the laboratory or oxidation due to moisture -induced hydrolysis of natural aging effects. By measuring the impact of aging after about age-related physical, mechanical properties characterized. This standard applies to openings latex, open-cell polyurethane foam, closed-cell polyurethane foam, closed-cell polyolefin foams, another test conditions to supplement other materials when needed. Note: The materials affect the physical properties of the accelerated aging test is can be measured, and not merely the tensile strength is usually measured, elongation or compression performance, indentation hardness. The impact of these tests and the use of non- or light aging necessarily linked.