Premium
Hydrosilylation crosslinking of silicone rubber catalyzed by bis (1,5‐cyclooctadiene) di‐μ,μ′‐chlorodirhodium
Author(s) -
Heidingsfeldová Marta,
Schätz Miroslav,
Czakoová Marie,
C̆apka Martin
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070420121
Subject(s) - vulcanization , hydrosilylation , siloxane , silicone rubber , materials science , polymer chemistry , elastomer , silicone , catalysis , natural rubber , rubber elasticity , polymer science , polymer , copolymer , composite material , chemistry , organic chemistry
Hydrosilylation vulcanization of addition silicone rubber catalyzed by bis (1,5‐cyclooctadiene) di‐μ,μ′‐chlorodirhodium at 150° was studied. The course of vulcanization, rubber network density, and mechanical properties of the vulcanizate are discussed with respect to the structure and molecular weight of the reactive groups of telechelic and internal vinylmethylpolysiloxanes and crosslinking methyl (hydrogen) dimethyl siloxane copolymers. Molecular weights of the polysiloxane components as well as the ration of unsaturated and Si—H groups were optimized. The results are in agreement with the theory of rubber elasticity of polymer networks and show wide application possibilities of the catalyst used.