| T300和JC2#纤维增强C/SiC复合材料力学性能对比 |
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| 引用本文： | 王松,陈朝辉,李钒,马青松.T300和JC2#纤维增强C/SiC复合材料力学性能对比[J].国防科技大学学报,2006,28(1):23-27. |
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| 作者姓名： | 王松 陈朝辉 李钒 马青松 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 以聚碳硅烷(PCS)为先驱体,采用聚合物浸渍裂解法(PIP)分别制备得到T300碳纤维和JC2#碳纤维增强C/SiC复合材料。JC2#C/SiC复合材料具有优异的力学性能,抗弯强度和断裂韧性分别达到662MPa和19.5MPa.m1/2;T300 C/SiC复合材料表现出低强度、高脆性,其抗弯强度和断裂韧性不足前者的四分之一。T300 C/SiC复合材料低性能的根本原因在于T300纤维在PCS裂解过程中性能严重下降,复合材料中纤维与基体间存在强界面结合是另一个影响因素。
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| 关 键 词： | C/SiC复合材料 力学性能 聚合物浸渍裂解 |
| 文章编号： | 1001-2486(2006)01-0023-05 |
| 收稿时间： | 2005/5/26 0:00:00 |
| 修稿时间： | 2005年5月26日 |
Comparison of Mechanical Properties of C/SiC Composites Reinforced by T300 and JC2# Carbon Fibers |
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| WANG Song,CHEN Zhaohui,LI Fan and MA Qingsong.Comparison of Mechanical Properties of C/SiC Composites Reinforced by T300 and JC2# Carbon Fibers[J].Journal of National University of Defense Technology,2006,28(1):23-27. |
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| Authors: | WANG Song CHEN Zhaohui LI Fan and MA Qingsong |
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| Institution: | College of Aerospace and Materials Engineering,National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering,National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering,National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering,National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | Two C/SiC composits reinforced respectively by T300 and JC2# carbon fibers were fabricated by means of polymer infiltration and pyrolysis(PIP) with polycarbosilane(PCS) as precursor.The composite reinforced by JC2# fiber had perfect mechanical properties,displaying flexural strength of 662MPa and fracture toughness of 19.5MPa.m~(1/2),whereas T300 C/SiC composite had low strength and high brittleness,with its flexural strength and fracture toughness were less than one fourth of those of JC2# C/SiC composite.It was found that the fundamental factor to the poor mechanical properties of T300 C/SiC composite was the severe degradation of the fiber during PCS pyrolysis;the other important one was attributed to the strong interfacial bonding between the fiber and agent in the composite. |
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| Keywords: | C/SiC composites mechanical properties PIP |
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