Co-vulcanization performance of chloroprene rubber/chlorinated polyethylene rubber blends with dicumyl peroxide

The properties of chloroprene rubber (CR) and chlorinated polyethylene rubber (CM) blends were studied with dicumyl peroxide (DCP) as co-vulcanization agent, and the characterization was carried by rubber process analyzer and danamic thermomechanical analyzer. The results showed that the processing...

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Published inHe cheng xiang jiao gong ye Vol. 38; no. 5; pp. 390 - 403
Main Authors Liu, Shi-Lian, Yuan, Bin, Zhang, Di, Mou, Xiao-Juan, Zhan, Shuang-Shuang, Li, Rong-Xun
Format Journal Article
LanguageChinese
Published 15.09.2015
Subjects
Analyzers
Blends
Chlorination
Ethylene thiourea
Polyethylenes
Polymer blends
Rubber
Zinc oxide
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Summary:The properties of chloroprene rubber (CR) and chlorinated polyethylene rubber (CM) blends were studied with dicumyl peroxide (DCP) as co-vulcanization agent, and the characterization was carried by rubber process analyzer and danamic thermomechanical analyzer. The results showed that the processing performance of the CR/CM blends was significantly improved compared with that of pure CR and CM, the scorch time was shortened, the optimum curing time was extended, and the mechanical properties was between those of pure CR and CM. The storage modulus (G') of the blends was greater than that of pure CR and CM, and the loss factor (tan delta) was between those of them. A certain compatibility existed between CR and CM. When DCP/ZnO/ethylene thiourea (mass ratio) was 4.25/1.80/0.35, the blend had larger G' and slightly smaller tan delta, the glass transition temperatures of the two phases became closer, and the crosslinking degree, compatibility and co-vulcanization degree were higher than those of rubber blend with
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ISSN:1000-1255