| 环氧网络结构设计与复合材料增韧的研究 |
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| 引用本文： | 史建立 赵时熙. 环氧网络结构设计与复合材料增韧的研究[J]. 复合材料学报, 1996, 13(1): 14-18 |
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| 作者姓名： | 史建立 赵时熙 |
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| 作者单位： | 北京航空航天大学材料科学与工程系 |
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| 摘 要： | 本文以自由体积理论,对BF3MEA固化环氧网络结构与Tg的关系进行了研究,并分析了组分对网络Tg的贡献,为确定固化剂的影响,对BF3MEA及DDS固化环氧网络的断裂韧性进行了测试。结果表明,DDS固化体系的韧性要比BF3MEA固化的相应的环氧网络的高。根据理论分析及实验结果,对复合材料基体的网络结构进行了重新设计,在提高复合材料层间韧性的同时保证其耐热性不会下降。实验结果验证了这一设想。
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| 关 键 词： | 玻璃化转变温度 环氧网络结构 断裂韧性 层间韧性 |
| 收稿时间： | 1994-07-25 |
STUDY ON THE DESIGNING OF EPOXY NETWORK STRUCTURE AND THE TOUGHENING OF COMPOSITE LAMINATES |
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| Shi Jianli,Zhao Shixi,Chen Changqi. STUDY ON THE DESIGNING OF EPOXY NETWORK STRUCTURE AND THE TOUGHENING OF COMPOSITE LAMINATES[J]. Acta Materiae Compositae Sinica, 1996, 13(1): 14-18 |
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| Authors: | Shi Jianli Zhao Shixi Chen Changqi |
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| Affiliation: | Beijing University of Aeronautics and Astronautics Beijing, P. R. China, 100083 |
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| Abstract: | Based on the free volume theory and the experimental results,the contributions of the components to T_g of the network were analysed. To determine the effect of curing agent,the fracture toughness of epoxy network , cured by DDS was investigated. The experimental results showed that K_(IC) of epoxy network cured by DDS was much tougher than the corresponding network cured by BF_3MEA. According to the above analysis,the network of matrix was deliberately designed, in order to improve the interlaminar toughness of composite without the degradation of its high temperature performance,and the feasibility of this method was confirmed by the experimental data. |
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| Keywords: | glass transition temperature epoxy network fracture toughness interlaminar toughness |
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