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Thermal stability of networks containing siloxane linkages
Author(s) -
Shaw M. T.,
Tobolsky A. V.
Publication year - 1970
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760100407
Subject(s) - siloxane , elastomer , materials science , silicone , thermal stability , moiety , silicone rubber , stress relaxation , polymer chemistry , composite material , natural rubber , polymer science , polymer , organic chemistry , chemistry , creep
Abstract The thermal stability of elastomers containing siloxane linkages has been compared using the technique of chemical stress relaxation in an inert environement. Enhancement of the already high stability of the basic poly (dimethyl siloxane) silicone rubber by the substitution of hetero groups in and on the main chain was proved, with the exception of the pendent trifluoroporopyl group. Particulary dramatic was the effect of the mcarborane moiety in the SiB‐2 elastomers which elevated the stability of the siloxane chain by more than 100°C relative to silicone rubber.