Methods of testing plastics. Sampling and test specimen preparation Preparation of test specimens of amorphous thermoplastics with a specified reversion by injection moulding rectangular plates

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Hardcopy , PDF

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English

Published date

28-02-1989

Publisher

British Standards Institution

NO CONTENTS SECTION

A method for obtaining specimens with high or low levels of reversion (shrinkage in response to heat treatment).

This part of ISO 2557 specifies the procedure for the preparation of test specimens with predominantly monoaxial orientation in the form of rectangular plates, made from rigid amorphous thermoplastic material. Cellular plastic materials and fibre-containing plastic materials are excluded.

The rectangular plates may be used for impact testing by the falling weight method.

Bars cut from the plate in different directions may serve as test specimens for the determination of the dependence of mechanical strength upon the degree and direction of the predominant orientation in the plate.

Committee	PRI/21
DevelopmentNote	Also numbered as ISO 2557-2 Supersedes BS 2782-9.940B(1981) (06/2005)
DocumentType	Standard
Pages	14
PublisherName	British Standards Institution
Status	Current

BS 2782-0:1982	Methods of testing plastics Introduction
BS 2782-9 Method 930A:1977	Methods of testing plastics. Sampling and test specimen preparation Preparation of test specimens by machining
BS 2782-9 Method 940B:1981	Methods of testing plastics. Sampling and test specimen preparation Preparation of test specimens of amorphous thermoplastic moulding material with a defined level of shrinkage in the form of rectangular plates by injection moulding
BS 2782-9 Method 940A:1981	Methods of testing plastics. Sampling and test specimen preparation Preparation of test specimens of amorphous thermoplastic moulding material with a defined level of shrinkage in the form of parallelepipedic bars by compression moulding and injection moulding
BS 2782-9 Method 910A:1977	Methods of testing plastics. Sampling and test specimen preparation Injection moulding test specimens of thermoplastic materials
BS 1755-1:1982	Glossary of terms used in the plastics industry Polymer and plastics technology

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BS 2782-9:Method 940B:1989

Methods of testing plastics. Sampling and test specimen preparation Preparation of test specimens of amorphous thermoplastics with a specified reversion by injection moulding rectangular plates

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