| Fatigue Crack Propagation Behavior of Rubber-toughened Epoxy Resin |
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| 作者姓名： | 罗辉阳 孙振华 赵世琦 |
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| 作者单位： | LUO Huiyang(罗辉阳)，SUN Zhenhua(孙振华)，ZHAO Shiqi(赵世琦) Department of Engineering Mechanics，Tsinghua University，Beijing 100084，China; Department of Chemical Engineering，Tsinghua University，Beijing 100084，China |
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| 摘 要： | ＩｎｔｒｏｄｕｃｔｉｏｎＡｓｅｘｃｅｌｌｅｎｔｐｏｌｙｍｅｒｉｃｍａｔｅｒｉａｌｓ,ｅｐｏｘｉｅｓａｒｅｗｉｄｅｌｙｕｓｅｄｉｎｍａｎｙｅｎｇｉｎｅｅｒｉｎｇｆｉｅｌｄｓａｓａｄｈｅｓｉｖｅｓ,ｍａｔｒｉｘｍａｔｅｒｉａｌｓｉｎｆｉｂｅｒｒｅｉｎｆｏｒｃｅｄｃｏｍｐｏｓｉｔｅｓ,ｐｏｔｔｉｎｇａｎｄｅｎｃａｐｓｕｌａｔｉｎｇ1].Ｂｕｔｅｐｏｘｉｅｓａｒｅｕｓｕａｌｌｙｂｒｉｔｔｌｅａｎｄｅａｓｉｌｙｃｒａｃｋｅｄ2].Ｒｕｂｂｅｒｍｏｄｉｆｉｃａｔｉｏｎ,ｔｈｅａｄｄｉｔｉｏｎｏｆａｒｕｂｂｅｒｙｐａ…
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| 关 键 词： | epoxy resin rubber toughening fatigue crack propagation toughening mechanisms |
Fatigue Crack Propagation Behavior of Rubber-toughened Epoxy Resin |
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| LUO Huiyang,SUN Zhenhua,ZHAO Shiqi.Fatigue Crack Propagation Behavior of Rubber-toughened Epoxy Resin[J].Tsinghua Science and Technology,2000,5(1). |
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| Authors: | LUO Huiyang SUN Zhenhua ZHAO Shiqi |
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| Abstract: | Fatigue crack propagation (FCP) behaviors of mass fraction 15% CTBN (carboxyl terminated butadiene acrylonitrile), 15% Qishi toughening agent toughened anhydride cured epoxy resins (EP), and pure anhydride cured EP were measured. The results showed that the two main toughening mechanisms, localized shear yielding and void plastics growth, which occurred near the threshold region because the rubber size is much less than the plastics size at the crack front, improved the near threshold FCP behavior and increased the threshold. The stable FCP behavior was obviously improved with the FCP rates decreased to less than 21%. |
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| Keywords: | epoxy resin rubber toughening fatigue crack propagation toughening mechanisms |
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