摘要
采用过氧化物交联，讨论了交联剂、共交联剂、补强填充剂以及增塑剂等对采用茂金属催化剂合成的乙烯－辛烯共聚物（ＰＯＥ）的物理机械性能的影响。结果表明，用过氧化物交联后，ＰＯＥ的拉伸强度、扯断伸长率和扯断永久变形大幅度下降。加入共交联剂，可以提高交联程度，缩短硫化时间。加入炭黑，可以起到补强作用，提高１００％定伸应力、撕裂强度、拉伸强度和硬度，减小扯断伸长率和扯断永久变形。加入增塑剂降低了某些力学性能，但扯断伸长率增加，硬度减小。加入少量增塑剂，ＰＯＥ表现出优异的耐热老化性能。成功地开发了汽车散热管配方。
The influences of crosslinking agent,co-crosslinking agent, reinforcer and plasticizer on the mechanical properties of polyolefin elastomers(POE)were discussed with peroxide as crosslinking agent using metallocene catalyst. The results showed that the tensile strength, elongation at break and permanent set at break of POE decreased greatly after crosslinking. Addition of co-crosslink agent increased the degree of crosslinking and shortened the vulcanization time.Addition of carbon black had the effect of reinforcing, increased the 100% tensile modulus,tear strength,tensile strength and Shore A hardness, decreased the elongation at break and permanent set at break.Addition of plasticizer lowered some mechanical properties,but increased elongation at break and decreased Shore A hardness.When little amount of plasticizer was added,POE showed excellent aging property. A recipe of radiation hose was developed and its properties reached DIN standard.
出处
《合成橡胶工业》
CAS
CSCD
1999年第3期168-170,共3页
China Synthetic Rubber Industry
关键词
聚烯烃弹性体
茂金属催化剂
过氧化物
交联
polyolefin elastomers
metallocene catalyst
peroxide
crosslinking
mechanical property
