Specification of a comparing method, based on the increasing discoloration of polyvinylchloride when exposed to heat, due to a decomposition reaction. Test pieces in diskform are placed between aluminium pieces and heated to the specified test temperature. After specified periods one test specimen at a time is taken out and the degree of discoloration assessed by visual examination or by measuring with a photometer.
Status: WithdrawnPublication date: 1990-04
Edition: 2Number of pages: 4
Technical Committee: ISO/TC 61/SC 9 Thermoplastic materials
- ICS :
- 83.080.20 Thermoplastic materials
ISO 305:1990Stage: 95.99
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