Heat-resistant prepreg and method for production thereof

Details Heat-resistant prepreg and method for production thereof Heat-resistant prepreg and method for production thereof

1986-07-18

1988-04-05

Page, Thurman K.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

427387, 427389, 4273898, 427435, 428365, 428378, 428379, 428391, 428392, B32B 900, B05D 302

Patent

active

047358580

ABSTRACT:
A heat-resistant prepreg uses at a substrate a heat-resistant material made of heat-resistant organic fibers, inorganic fibers, etc. and as a matrix a heat-resistant mixture containing at least 10% by weight of a borosiloxane resin composition. This heat-resistant prepreg is obtained by impregnating the substrate at a temperature in the range of 200.degree. to 300.degree. C. to such an extent that at least 20% of the amount of phenyl groups bonded to silicon atoms in the aforementioned borosiloxane resin composition prior to the impregnating and drying steps will remain after the heat treatment.

REFERENCES:
patent: 4152509 (1979-05-01), Yajima et al.
patent: 4228270 (1980-10-01), Kobayashi
patent: 4361679 (1982-11-01), Yajima et al.
patent: 4405687 (1983-09-01), Morita et al.
patent: 4460639 (1984-07-01), Chi et al.

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