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。
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.
出处
《现代塑料加工应用》
CAS
北大核心
2007年第1期12-15,共4页
Modern Plastics Processing and Applications
基金
国家自然科学基金(基金号10590352)
关键词
高密度聚乙烯
茂金属聚乙烯
共混
混炼器
转速
共晶
high-density polyethylene
linear low density polyetlylene
blend
mixer
rotating speed
co-crystals
