AS 4828.2-2008

Table of Contents

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<text>AS 4828.2-2008 DEGRADABILITY OF PLASTICS-METHODS OF TEST - DETERMINATION OF BRITTLE POINT IN PLASTIC FILM USING A...</text>
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<text>PREFACE</text>
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<pageno>2</pageno>
<text>FOREWORD</text>
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<text>METHOD</text>
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<text>1 SCOPE</text>
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<text>2 REFERENCED DOCUMENTS</text>
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<text>3 DEFINITIONS</text>
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<text>3.1 Brittle point</text>
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<text>3.2 Film</text>
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<text>3.3 Line grips</text>
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<text>3.4 Tear failure</text>
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<text>4 APPARATUS</text>
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<text>4.1 Testing machines</text>
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<text>4.2 Grips</text>
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<text>4.3 Thickness gauge</text>
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<text>4.4 Width-measuring devices</text>
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<text>4.5 Specimen cutter</text>
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<text>4.6 Extension indicators</text>
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<text>5 TEST SPECIMENS</text>
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<text>6 NUMBER OF TEST SPECIMENS</text>
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<text>7 CONDITIONING</text>
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<text>7.1 Conditioning</text>
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<pageno>5</pageno>
<text>7.2 Test conditions</text>
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<text>8 PROCEDURE</text>
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<text>9 CALCULATION</text>
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<text>10 REPORT</text>
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Scope

This Standard specifies a method for the determination of a brittle point for degradable plastic films and sheeting less than 1.0 mm thick. This practice is not intended for determination of the rate of degree of degradation of a plastic film or sheet, but rather, to assess when in the course of its degradation under some condition, a brittle point is reached.
This Standard employs a constant rate of separation of the grips holding the sample and a static load cell.
This Standard is based on the use of grip separation as a measure of extension; however, the desirability of using extension indicators accurate to ±1.0% or better as specified in
ASTM D638 is recognized, and a provision for the use of such instrumentation is incorporated in the procedure.
The results of this test method may be used in conjunction with the results of other test methods in this series, in particular where the plastic specimens have been exposed to ultraviolet radiation, heat and outdoor exposures, prior to testing under this Standard.
The results of this test method are to be used for comparative ranking of test specimens and are not to be used as a performance standard.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	EV-017
Supersedes	DR 06420