发明名称 |
Process for preparing a carbon fiber-reinforced composite material having a morphology gradient |
摘要 |
The present invention relates to a carbon fiber-reinforced composite material having a high toughness against delamination, which is prepared by regulating the rate of cure reaction of a thermosetting resin used as a matrix and the rate of dissolving a toughening agent in the matrix to form a morphology gradient depending on a concentration gradient of the toughening agent between layers of the carbon composite material. A process for preparing the carbon fiber-reinforced composite material which comprises the steps of: obtaining a thermosetting resin in a melted or solution form, and adding a catalyst of the thermosetting resin to obtain a prepreg; adding a toughening agent between plies within the prepreg thus impregnated, in a form of film having a uniform thickness or in a form of powder having a uniform distribution; and, curing under a proper reaction temperature and pressure, by autoclave vacuum bag molding method or compression molding method. The carbon fiber-reinforced composite material of the invention has a higher toughness against delamination than the conventional ones, and still has a thermostability and a chemical resistance to solvent or acid which is one of advantages of a thermosetting matrix, while improving a weight penalty phenomenon which is a disadvantage of a conventional interleaved system.
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申请公布号 |
US6060147(A) |
申请公布日期 |
2000.05.09 |
申请号 |
US19970978993 |
申请日期 |
1997.11.26 |
申请人 |
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY |
发明人 |
KIM, SUNG-CHUL;KIM, YU-SEUNG |
分类号 |
B32B27/12;B29C37/00;C08J5/24;(IPC1-7):H01B1/06 |
主分类号 |
B32B27/12 |
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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