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废橡胶胶粉/HDPE/POE热塑性弹性体的动态硫化
引用本文:李岩,张勇,张隐西.废橡胶胶粉/HDPE/POE热塑性弹性体的动态硫化[J].高分子材料科学与工程,2004,20(6):187-190.
作者姓名:李岩  张勇  张隐西
作者单位:上海交通大学高分子材料研究所,上海,200240
摘    要:以过氧化二异丙苯(DCP)为硫化剂,研究了废橡胶胶粉/高密度聚乙烯(HDPE)/乙烯-辛烯共聚物(POE)(50/25/25)热塑性弹性体的动态硫化.考察了过氧化二异丙苯(DCP)用量对该共混物力学性能的影响.结果表明,加入DCP后,废橡胶胶粉/HDPE/POE共混物的交联度增加。动态硫化提高了共混物的力学性能,DCP用量为0.5份时.共混物具有最大的拉伸强度(8.01MPa)和断裂伸长率(225%).扫描电镜观察结果表明,动态硫化后共混物的界面结合更加紧密.有利于力学性能的提高。废橡胶胶粉/HDPE/POE热塑性弹性体具有良好的耐老化性和再加工性.可以循环使用。

关 键 词:废橡胶胶粉  高密度聚乙烯  乙烯-辛烯共聚物  热塑性弹性体  动态硫化
文章编号:1000-7555(2004)06-0187-04
修稿时间:2002年12月17

DYNAMIC VULCANIZATION OF THE WASTE RUBBER POWDER/HDPE/POE THERMOPLASTIC ELASTOMERS
LI Yan,ZHANG Yong,ZHANG Yin-xi.DYNAMIC VULCANIZATION OF THE WASTE RUBBER POWDER/HDPE/POE THERMOPLASTIC ELASTOMERS[J].Polymer Materials Science & Engineering,2004,20(6):187-190.
Authors:LI Yan  ZHANG Yong  ZHANG Yin-xi
Abstract:The dynamic vulcanization of the waste rubber powder/high-density polyethylene (HDPE)/ethylene-octene copolymer (POE) thermoplastic elastomers(50/25/25) was carried out by using dicumyl peroxide (DCP). The effects of DCP contents on the mechanical properties of the waste rubber/HDPE/POE composites were investigated. The results show that the addition of DCP improves the crosslinking degree of the waste rubber powder/HDPE/POE composites. The mechanical properties of the waste rubber powder/HDPE/POE composites are improved after dynamic vulcanization. The best tensile strength((8.01) MPa) and elongation at break((225%)) are found in the waste rubber powder/HDPE/POE composites when DCP content is (0.5) phr. SEM observation shows that good interfacial bonding is formed in the dynamically vulcanized waste rubber powder/HDPE/POE composites. This leads to its good mechanical properties compared with the corresponding unvulcanized composites. The waste rubber powder/HDPE/POE composites have good heat-resistant property and can be reprocessed.
Keywords:waste rubber powder  high-density polyethylene  ethylene-octene copolymer  thermoplastic elastomer  dynamic vulcanization
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