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Study of epoxy resin for cryogenic use by positron annihilation method

โœ Scribed by S. Nishijima; Y. Honda; S. Tagawa; T. Okada

Book ID
112673222
Publisher
Springer
Year
1996
Tongue
English
Weight
403 KB
Volume
211
Category
Article
ISSN
1588-2780

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The positron annihilation method was used to evaluate the unoccupied spaces in epoxies with the aim of molecular design of epoxies for cryogenic use. The fracture toughness of commercially available epoxies was measured and compared with the lifetime TV. Evaluation by positron annihilation enabled t

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Positron annihilation lifetime (PAL) measurements are reported on a series of chemically different cured epoxy resin systems. Analysis of PAL data yields indicates the effects of changes in the cure temperature and chemical structure on the average molecular free volume size. A comparison of PAL wit