International Journal of Materials Chemistry and Physics
Articles Information
International Journal of Materials Chemistry and Physics, Vol.2, No.1, Feb. 2016, Pub. Date: Jan. 6, 2016
Properties of Polyphenylsilsesquioxane-Polydimethylsiloxane Block Copolymer and Its Filled Vulcanizates
Pages: 28-32 Views: 1756 Downloads: 951
Authors
[01] Khoroshavina J. V., Laboratory Silicone Rubber, Institute of Synthetic Rubber (FSUE ISR), Saint-Petersburg, Russia.
[02] Frantsuzova J. V., Laboratory Silicone Rubber, Institute of Synthetic Rubber (FSUE ISR), Saint-Petersburg, Russia.
[03] Nikolaev G. A., Laboratory Silicone Rubber, Institute of Synthetic Rubber (FSUE ISR), Saint-Petersburg, Russia.
Abstract
The aim of this work was to obtain the siloxane-polyphenylsilsesquioxane block copolymer and its vulcanizate by standard methods.Polyphenylsilsesquioxane-polydimethylsiloxane block copolymer was obtained by hydrolytic polycondensation of polydimethylsiloxane with phenyltrichlorosilane, followed by condensation of the hydrolyzate. It represents a material with uniform distribution of the silicon organic and inorganic phases at the molecular level, filled by non-condensed polyphenylsilsesquioxanes. A high temperature resistance of new block copolymer was shown by thermogravimetric analysis. The experimental test on mechanical properties such as tensile strength, elongation at break, hardness and compression set carried out on the vulcanizates of new rubber produced showed an increase in the tensile strength, elongation, hardness and heat resistance.
Keywords
"Polyphenylsilsesquioxane-Polydimethylsiloxane Block Copolymer, Hydrolytic Polycondensation, Filled Vulcanizate, Heat Resistance "
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