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中文摘要：
高密度聚乙烯／茂金属线性低密度聚乙烯（HDPE／mLLDPE）40／60共混物经混炼器混炼后的冲击强度比未经混炼器混炼的HDPE增加了96．2％，比未经混炼器混炼的mLLDPE增加了27．0％，其拉伸强度比未经混炼器的mLLDPE增加了49．1％。这表明在混炼器的强剪切分散作用下，HDPE，mLLDPE共混对HDPE和mLLDPE有显著的增韧作用。其微观结构测试表明，mLLDPE与HDPE形成了共晶结构，HDPE含量高的HDPE／mLLDPE共混体系试样内部的晶粒尺寸更为均一。
英文摘要：
The impact strength of HDPE/mLLDPE 40/60 blends compounded with mixer, is enhanced by 96. 2% compared with pure HDPE and 27% compared with mLLDPE. In the meantime, the tensile strength of the blends is enhanced by 49. 1% compared with pure mLLDPE. The results show that mixer with intensive shear and disperse cause toughen effect of the blends. Through the investigation of micro-structure, it is found that co-crystals structure of HDPE and mLLDPE forms in the blends. In addition, it can be seen that the size of crystal is more uniform when HDPE content is high.
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