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Curing of epoxy resins with diphenyliodonium salts as thermal initiators

✍ Scribed by Juesheng Gu; Subhash C. Narang; Eli M. Pearce

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
449 KB
Volume
30
Category
Article
ISSN
0021-8995

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✦ Synopsis

The curing reaction of a thermally curable epoxy system containing diphenyliodonium hexafluoroarsenate was investigated by using the dynamic and isothermal techniques of differential scanning calorimetry (DSC). It was shown that the curing involved two consecutive reactions. The heat of the total curing reaction and overall kinetic parameters for the two reactions were obtained.

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Citric acid-piperazine salt was prepared with a molar ratio of acidpiperazine of 2.9. The salt was characterized by thermal calorimetry, 13C NMR and IR spectroscopy. The piperazine content in the salt was 52%. A typical formulation was achieved by mixing the salt with the diglycidyl ether of bisphen