发明名称 |
Carbon and ceramic matrix composites fabricated by a rapid low-cost process incorporating in-situ polymerization of wetting monomers |
摘要 |
This invention is a rapid low-cost technique for manufacturing thick high-performance carbon and ceramic composites in the form of uniformly densified near-net shaped structures. This is accomplished by impregnating composite preforms with low-viscosity wetting monomers which undergo polymerization followed by pyrolysis reactions in the preform ultimately creating ceramic and/or carbon matrices. Since the monomers possess low-molecular-weight they have low viscosities. Thus, if they wet the fiber and partially-densified preform they can easily impregnate even the smallest pores. Once inside the preforms, polymerization of the monomers is then initiated, resulting in a liquid matrix-precursor of the high molecular weight needed to produce a superior matrix (upon pyrolysis) with high efficiency.
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申请公布号 |
US6309703(B1) |
申请公布日期 |
2001.10.30 |
申请号 |
US19980100774 |
申请日期 |
1998.06.08 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE |
发明人 |
WAPNER PHILLIP G.;HOFFMAN WESLEY P.;JONES STEVEN |
分类号 |
C04B35/83;(IPC1-7):B05D3/00 |
主分类号 |
C04B35/83 |
代理机构 |
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地址 |
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