Molding material containing refractory fibers, usable in the man

Details Molding material containing refractory fibers, usable in the man Molding material containing refractory fibers, usable in the man

1992-12-02

1995-06-13

Michl, Paul R.

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...

524440, 524443, 524495, 524594, 423445R, C08K 304, C08K 702

Patent

active

054243530

ABSTRACT:
The invention relates to a thermosetting molding material, containing refractory fibers, characterized in that it can be injection molded and takes the form of a "flock" of 60 to 30% by weight of solid fillers which include refractory fibers, impregnated with 40 to 70% by weight of thermosetting resin. This molding material is obtained from a syrup of the catalysed thermosetting resin into which are introduced the solid fillers while mixing in such a way as to produce homogeneous impregnation of the filler with the catalyzed resin, then the mixture is kneaded until the filler is converted into a flock whereupon the flock/resin mixture is dried under reduced pressure. Application to the manufacture, in particular by conventional injection molding, of composite materials usable in the manufacture of motors for tactical missiles, in particular ablatable blast pipes.

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patent: 4751134 (1988-06-01), Chenoweth et al.
patent: 4847311 (1989-07-01), Yamaya et al.
patent: 5167876 (1992-12-01), Lem et al.

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