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Investigation of surface damage resulting from static charging of moulded plastic components

Static Charging or Contact Electrification occurs on the separation from intimate contact of materials of dissimilar properties. The amount of charge transferred is dependent on, amongst other things, the contact potential difference between the materials. While a great deal of work has been performed in the past investigating contact electrification, variability in contacts from sample to sample has led to difficulty in providing a fundamental understanding of the process. The investigation here is concerned with surface damage to a plastic component (a spectacle lens), which results from contact electrification. The component in question is cast between two crown glass moulds. After curing, the moulds adhere strongly to the plastic requiring significant leverage to separate them. When separation occurs in the dark, a flash of light is often seen. / Thesis (PhD)--University of South Australia, 1999

Identiferoai:union.ndltd.org:ADTP/268892
Date January 1999
CreatorsTaylor, Paul James
Source SetsAustraliasian Digital Theses Program
LanguageEnglish
Detected LanguageEnglish
Rightscopyright under review

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