Curable organopolysiloxanes filled with silicon carbide powders

Details Curable organopolysiloxanes filled with silicon carbide powders Curable organopolysiloxanes filled with silicon carbide powders

1988-09-26

1989-12-19

Marquis, Melvyn I.

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...

26433111, 501 88, 501 96, 501 97, 501 99, 524404, 524424, 524430, 524431, 524428, 524440, 524441, 524439, C08K 300

Patent

active

048883760

ABSTRACT:
The preparation of highly densified ceramic bodies by sintering certain curable organopolysiloxanes filled with silicon carbide powders, metal-containing sintering aids, and organopolysiloxane curing agents described. Such highly densified ceramic bodies can be prepared by either a pressure-less or a hot press sintering process. The compositions of this invention can be formed into desired shapes and then sintered to form ceramic, shaped bodies with high densities. One advantage of the present invention is that the green bodies have relative high strengths and thus can be easily handled and, if desired, machined before sintering. The curable organopolysiloxanes useful in this invention must yield a ceramic char which contains free or excess carbon in addition to carbon in the form of silicon carbide upon pyrolysis to elevated temperatures.

REFERENCES:
patent: 3090691 (1963-05-01), Weyer
patent: 3108985 (1963-10-01), Weyer
patent: 3485904 (1969-12-01), Ostrowski
patent: 4004934 (1977-01-01), Prockazaka et al.
patent: 4041117 (1977-08-01), Prockazka et al.
patent: 4081284 (1978-03-01), Prockazka et al.
patent: 4122139 (1978-10-01), Yajima et al.
patent: 4255316 (1981-03-01), Blizzard
patent: 4269753 (1981-05-01), Mine et al.
patent: 4269757 (1981-05-01), Mine et al.
patent: 4289720 (1981-09-01), Yajima et al.
Yajima, et al.; "Pyrolysis of a Polyborodiphenylsiloxane", 266 Nature 521, (1977).
Yajima, et al.; "SiC and Si.sub.3 N.sub.4 Sintered Bodies with New Borodiphenylsiloxane Polymers as Binder," 266 Nature 522, (1977).

Affiliated with

Also associated with

Rating

Curable organopolysiloxanes filled with silicon carbide powders does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Curable organopolysiloxanes filled with silicon carbide powders , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Curable organopolysiloxanes filled with silicon carbide powders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1903341