| STUDY ON THE TOUGHENING MECHANISM OF RUBBER TOUGHENED EPOXY |
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| 作者姓名： | 孙以实 赵世琦 林秀英 王习群 |
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| 作者单位： | Department of Chemistry，Tsinghua University，Beijing，Department of Chemistry，Tsinghua University，Beijing，Department of Chemistry，Tsinghua University，Beijing，Department of Chemistry，Tsinghua University，Beijing |
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| 摘 要： | The following factors affecting the rubber toughened epoxy resin system were studied: 1. kindsof curing agent used, 2. the M_c value of the matrix, 3. the bonding foce between the dispersed phaseand the matrix. Our experimental result indicates that the average chain length between crosslinks(M_c) is a much more important affecting factor. Chemical bonding between the dispersed phaseand the matrix is also important. A toughening mechanism of rubber toughened epoxy has beenproposed. In the material with relatively low crosslinking density, extensive fracture process stripis formed which is induced by the combined stress field near the rubber particles. The chemical bond-ing between the dispersed phase and the matrix may inerease the strength of the local stress field aboutthe rubber particles which is in favor of broading the fracture process area.
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| 收稿时间： | 1985-08-15 |
STUDY ON THE TOUGHENING MECHANISM OF RUBBER TOUGHENED EPOXY |
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| SUN Yishi,ZHAO Shiqi,LIN Xiuying,WANG Xiqun.STUDY ON THE TOUGHENING MECHANISM OF RUBBER TOUGHENED EPOXY[J].Chinese Journal of Polymer Science,1986,0(3):229-234. |
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| Authors: | SUN Yishi ZHAO Shiqi LIN Xiuying WANG Xiqun |
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| Institution: | Department of Chemistry; Tsinghua University. Beijing |
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| Abstract: | The following factors affecting the rubber toughened epoxy resin system were studied: 1. kindsof curing agent used, 2. the Mc value of the matrix, 3. the bonding foce between the dispersed phaseand the matrix. Our experimental result indicates that the average chain length between crosslinks(Mc) is a much more important affecting factor. Chemical bonding between the dispersed phaseand the matrix is also important. A toughening mechanism of rubber toughened epoxy has beenproposed. In the material with relatively low crosslinking density,extensive fracture process strip is formed which is induced by the combined stress field near the rubber particles.The chemical bonding between the dispersed phase and the matrix may increase the strength of the local stress field about the rubber particles which is in favor of broading the fracture process area. |
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