Composite of thermosetting resin with metallic oxide and process

Details Composite of thermosetting resin with metallic oxide and process Composite of thermosetting resin with metallic oxide and process

1998-03-31

2000-09-26

Yoon, Tae

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524430, 524493, 523149, 523209, 523216, C08K 336, C08J 516

Patent

active

061243930

ABSTRACT:
A composite of a thermosetting resin with a metallic oxide, prepared by a process which comprises subjecting a metal alkoxide containing a silicon alkoxide and/or a low condensate thereof to hydrolysis and polycondensation in a solution of a phenolic resin and/or thermosetting resin containing a phenolic resin while effecting the removal of the solvents and/or curling reaction of the resins to incorporate a particulate metallic oxide having an average particle diameter of from 0.01 to 5 .mu.m homogeneously in the thermosetting resin with a good interfacial wettability without causing macroscopic phase separation, as well as a process for the preparation of such a composite of a thermosetting resin with a metallic oxide and a process for the preparation of a crack-free molded composite product. A tribological material such as bearing, brake and clutch material includes such a composite as an essential constituent. The composite provides a thermosetting resin with an enhancement in surface properties such as hardness, sliding properties such as friction coefficient, critical PV value and wearability and mechanical properties such as impact resistance, particularly strength, elastic modulus and elongation. Thus, a cured or uncured composite of a thermosetting resin with a metallic oxide can be used as a molding material, sliding material, friction material, coating material, film-forming material, and the like.

REFERENCES:
patent: 4115959 (1978-09-01), McCormick
patent: 4190686 (1980-02-01), Muis
patent: 4460730 (1984-07-01), Koyama et al.
patent: 4798758 (1989-01-01), Nagano et al.
patent: 5281644 (1994-01-01), Iyer et al.

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