发明名称 |
Controlled fiber distribution technique for glass matrix composites |
摘要 |
A method for manufacturing a discontinuous fiber reinforced glass matrix composites by injection molding using an injection nozzle that separates substantially all of a multifilament yarn into individual fibers resulting in a composite having greater crack resistance. The method comprises impregnating continuous filament yarn with glass matrix powders comprising glass, glass-ceramic powders or a mixture thereof. The impregnated multifilament yarn is chopped into discontinuous lengths and exposed to a temperature sufficient so that the matrix material softens. Pressure is applied to the heated impregnated multifilament yarn sufficient to displace the yarn into a mold through an injection nozzle contoured such that sufficient die-wall shear forces are generated to separate substantially all of the multifilament yarn into individual filaments. A mold pressure is maintained sufficient to prevent relaxation of the composite until the strain point of the glass is reached.
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申请公布号 |
US4780432(A) |
申请公布日期 |
1988.10.25 |
申请号 |
US19860902985 |
申请日期 |
1986.09.02 |
申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
MINFORD, ERIC;PREWO, KARL M.;MCFARLIN, DAVID J.;CARULO, ANTONIO B. |
分类号 |
C03B11/06;C03B11/14;C03B19/02;C03C14/00;C03C25/00;(IPC1-7):C03C1/00 |
主分类号 |
C03B11/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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