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1. (WO2018141737) QUALITY CONTROL METHOD FOR MOULDED PLASTICS COMPONENTS

Pub. No.:    WO/2018/141737    International Application No.:    PCT/EP2018/052250
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Wed Jan 31 00:59:59 CET 2018
IPC: G01N 33/44
Applicants: NORTON (WATERFORD) LIMITED
Inventors: BUCK, Daniel
WALSH, Declan
PRENDERGAST, Paul
Title: QUALITY CONTROL METHOD FOR MOULDED PLASTICS COMPONENTS
Abstract:
Disclosed herein is a quality control method for predicting premature degradation in mechanical properties of a series of moulded plastics components, the moulded plastics components being formed from a batch mixture comprising a cross-linkable polymer and a peroxide cross-linking agent. The method comprises selecting a subset of the series of moulded plastics components and obtaining a material specimen from the subset; and then extracting and measuring a residual peroxide content of the specimen. According to the invention,the measured residual peroxide content is representative of a probability of the premature age-related degradation in the entire series of moulded plastics components, and may therefore be compared against a threshold residual peroxide content to determine whether the entire series of components is of acceptable quality.