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ISO 4574:1978

Withdrawn Date published:

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Plastics — PVC resins for general use — Determination of hot plasticizer absorption

Conditioning of 200 parts of plasticiser in the bowl of a planetary mixer at a temperature of 75 C. Addition of 100 parts of the resin to be tested and mixing with the plasticizer. Taking of samples of this mixture at various times, removal of excess of plasticizer by centrifuging and determining the quantity of plasticizer absorbed by the polymer. Plotting a graph, from which can be determined for the polymer under test: - the mean rate of plasticizer absorption (RPA) ; - the hot plasticizer absorption (HPA) at 75 C and 30 min.

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  • BS 2782-1:Method 131B:1983

    Methods of testing plastics. Thermal properties, Determination of extensibility after heat ageing of flexible polyvinyl chloride sheet

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ISO 4574:1978

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