Method of manufacturing self-bonding silicone insulation materials

Abstract

Abstract WHERE R'' represents a methyl radical, a vinyl radical or a phenyl radical, X a hydrolyzable radical or a hydroxyl radical, m equals an integer of from 4 to 100, and n equals an integer of from 0 to 10. After incorporated with 0.1 to 5 percent, by weight, of an organic peroxide, the organopolysiloxane varnish is applied onto an insulation substrate. Suitable insulation substrates include a glass cloth, a glass mat, a polyester film, a polyimido film, a polyamide fiber mat, a non-woven fabric of polyester fibers, a mica paper, mica flakes or the like. A vinyl containing organopolysiloxane varnish is first prepared by cohydrolyzing and polymerizing a mixture of silanes of (a) 2 to 25 mol percent of a trifunctional component expressed by CH2 CHSiX3 where X represents a hydrolyzable radical, (b) 20 to 60 mol percent of a trifunctional component expressed by RSiX3 where R represents a phenyl radical or a methyl radical, at least 16 mol percent of the R being phenyl radicals, and X a hydrolyzable radical, and (c) 30 to 70 mol percent of a difunctional component expressed by

Inventors

• 👤 Y Mikogami
• 👤 I Wada
• 👤 M Ishizaka
• 👤 T Suzuki

Bibliographic Details