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首页> 外文期刊>Journal of Applied Polymer Science >Toughening liquid-crystalline polymers with polyethylenes containing epoxy functionality
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Toughening liquid-crystalline polymers with polyethylenes containing epoxy functionality

机译：用含环氧官能团的聚乙烯增韧液晶聚合物

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To improve toughness, a liquid-crystalline polymer (LCPs) was blended with polyethylenes containing epoxy functionality in concentrations of 2, 6, and 15 wt %. The blends were prepared with a corotating twin-screw extruder and were injection-molded into specimens for mechanical testing. The effect of the amount of the epoxy-functionalized polyethylenes on the morphology and mechanical and thermal properties was studied. The toughness improved with increasing amount of functionalized polyethylene, and the blend containing 15 wt % epoxy-functionalized polyethylene had the best toughness properties. Impact strength values up to three times higher than those of the neat LCP were achieved. However, the stiffness of the LCP concurrently decreased substantially. The morphology became much more uniform, and the melting behavior changed. The results show that considerable improvements in the toughness properties of LCPs can be achieved with epoxy-functionalized polyethylenes. (C) 2002 Wiley Periodicals, Inc. [References: 19]
机译：为了提高韧性，将液晶聚合物（LCP）与包含环氧官能度为2、6和15重量％的聚乙烯共混。用同向双螺杆挤出机制备共混物，并注塑成样品进行机械测试。研究了环氧官能化聚乙烯的数量对形态，机械性能和热性能的影响。韧性随着官能化聚乙烯的增加而提高，并且包含15wt％环氧官能化聚乙烯的共混物具有最佳的韧性。达到的冲击强度值是纯LCP的三倍。但是，LCP的刚度同时下降。形态变得更加均匀，并且熔融行为改变。结果表明，使用环氧官能化聚乙烯可以大大改善LCP的韧性。 （C）2002 Wiley Periodicals，Inc. [参考：19]

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