Silicone rubber compositions for high-voltage electrical insulat

Details Silicone rubber compositions for high-voltage electrical insulat Silicone rubber compositions for high-voltage electrical insulat

1998-09-17

1999-11-02

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523437, H01L 2100

Patent

active

059772166

ABSTRACT:
A silicone rubber composition is obtained by blending (A) 100 parts by weight of an organopolysiloxane composition of the organic peroxide or addition reaction curing type, with (B) 30-400 parts by weight of aluminum hydroxide which has been surface treated so as to bear 1.0.times.10.sup.-6 to 2.0.times.10.sup.-4 mol/gram of vinyl groups. The composition does not lose rubber strength even though it is loaded with large amounts of aluminum hydroxide. It cures into a silicone rubber having satisfactory physical properties and improved high-voltage electrical insulating properties and thus suited for use as high-voltage electrical insulators.

REFERENCES:
patent: 3511698 (1970-05-01), Talcott
patent: 3965065 (1976-06-01), Elliott
patent: 4476155 (1984-10-01), Niemi
patent: 5405896 (1995-04-01), Fujiki et al.
patent: 5519080 (1996-05-01), Matsushita et al.
patent: 5691407 (1997-11-01), Azechi et al.
patent: 5824729 (1998-10-01), Matsushita et al.

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