文献类型：期刊文献

英文题名：The Effect of Peroxide Cross-Linking on the Properties of Low-Density Polyethylene

作者：Liu, Shan-Qiu[1];Gong, Wei-Guang[1];Zheng, Bai-Cun[1]

机构：[1]E China Univ Sci & Technol, Adv Sports Mat R&D Ctr, Shanghai 200237, Peoples R China

年份：2014

卷号：53

期号：1

起止页码：67

外文期刊名：JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS

收录：;EI(收录号：20134817020382);WOS:【SCI-EXPANDED(收录号:WOS:000328017600006)】；

基金：The authors would like to thank the Shanghai Science and Technology Committee for support.

语种：英文

外文关键词：cross-linking; crystallinity; peroxide; polyethylene; properties; weight loss

摘要：Low-density polyethylene (LDPE) was chemically cross-linked with various amounts of dicumyl peroxide (DCP). The cross-link density, determined by Flory-Rehner theory, showed an increase with increasing DCP. The gel content, densities of cross-linked LDPE, thermal stability, crystallization, melting behavior, and tensile properties were studied. The results showed a new finding about the change of weight loss after cross-linking; with increase in temperature, the weight loss showed an increase below the temperature of about 450 degrees C and then showed a decrease at temperatures from about 450 degrees C to 500 degrees C after being cross-linked. The crystallinity, melting point, crystallization temperature, and elongation at break decreased with the increase in DCP. However, the maximum tensile stress increased with the increase in DCP, and the cross-linked samples showed a rubber-like behavior with no flow.