Process for producing reinforcing SiC fiber for SiC...

Details Process for producing reinforcing SiC fiber for SiC... Process for producing reinforcing SiC fiber for SiC...

2006-10-24

2006-10-24

Lopez, Carlos (Department: 1731)

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Using organometallic or organosilicon intermediate

C264S625000, C264S627000, C264S638000

Reexamination Certificate

active

07125514

ABSTRACT:
A mixed polymer liquid is prepared by mixing a polycarbosilane-dissolved organic solvent with poly(methylsilane) and moderated to viscosity of 5–20 Pa·s by heat-treatment to promote partial cross-linking reaction. The mixed-polymer is then melt-spun to fiber at 250–350° C. The fiber is cured by treatment at 100–200° C. in an oxidizing atmosphere, and baked at 1000° C. or higher. Due to thermosetting action of poly(methylsilane), the mixed polymer liquid is continuously melt-spun without breakage, and SiC fiber produced in this way is useful for reinforcement of SiC composite excellent in toughness, strength and heat-resistance.

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