Citation: PENG Xinsheng, WU Shuyun, CHEN Donglin. MECHANICAL RELAXATION TIME OF A TWO-COMPONENT EPOXY NETWORKLiClO4 POLYMER ELECTROLYTE*[J]. Chinese Journal of Polymer Science, ;1993, 11(2): 133-143. shu

MECHANICAL RELAXATION TIME OF A TWO-COMPONENT EPOXY NETWORKLiClO4 POLYMER ELECTROLYTE*

PENG Xinsheng ^{**，吴淑云，陈东霖} ,
WU Shuyun ,
CHEN Donglin

Received Date: 16 November 1991

The mechanical relaxation time of a two-component epoxy network-LiClO4 system as a polymer electrolyte was investigated. The network is composed of diglycidyl ether of polyethylene glycol (DGEPEG) and triglycidyl ether of glycerol (TGEG), wherein LiCIO4 was incorporated and acts as both the ionic carrier and the curing catalyst. As the relaxation time is informative to the segmental mobility, which is known to be essential for ionic conductivity, the average relaxation times of the specimens were determined through master curve construction.Experimental results showed that the salt concentration,molecular weight of PEG in DGEPEG and DGEPEG/TGEG ratio have profound effect on the relaxation time of the specimen.Among these factors,the former reinforces the network chains,leading to lengthen the relaxation time,whereas the latter two are in favour of the chain flexibility and show an opposite effect.The findings was rationalized in terms of the free volume concept.
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