文章摘要
改进型中乙烯基聚丁二烯橡胶性能的研究 Ⅱ.玻璃化温度和动态力学性能
Study on Properties of Modified MVBRs Part 2.Study on Tg and Dynamic Mechanical Properties
  
DOI:
中文关键词: 聚丁二烯  中乙烯基聚丁二烯  动态力学性能
英文关键词: polybutadiene  MVBR  dynamic mechanical properties
基金项目:
作者单位
李杨 北京燕山石化公司研究院 
刘慧明 大连理工大学化工学院 
顾明初 大连理工大学化工学院 
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中文摘要:
      系统研究线形中乙烯基聚丁二烯橡胶(L-MVBR)、星形中乙烯基聚丁二烯橡胶(S-MVBR)、线形1,4-1,2-立构二嵌段中乙烯基聚丁二烯橡胶(L-B-MVBR)和星形1,4-1,2-立构二嵌段中乙烯基聚丁二烯橡胶(S-B-MVBR)的玻璃化温度及动态力学性能,发现L-B-MVBR具有较佳的动态力学性能,内耗生热较低;相对分子质量和1,2结构质量分数的增大,星形支化结构均有利于嵌段MVBR产生微观相分离结构,控制适宜的嵌段比可确保微观相分离结构更为显著。
英文摘要:
      The Tg and the dynamic mechanical properties of four kinds of modified medium vinyl polybutadiene rubbers (MVBRs) including linear MVBR (L-MVBR),star MVBR(SMVBR),linear 1,4-1,2-stereodiblock MVBR(L-B-MVBR)and star 1,4-1,2-stereodiblock MVBR(S-B-MVBR)were systematically investigated.The results showed that L-B-MVBR had better dynamic mechanical properties and lower heat build-up;the star-branched structure and the increase of molecular weight and 1,2-polybutadiene content were benificial to form the microphase seperated structure;and the appropriate ratio of the 1,2-polybutadiene block to the 1,4-polybutadiene block resulted in a more remarkable micro-phase seperated structure.
Author NameAffiliation
Li Yang Research Institute of Beijing Yanshan Petrochemical Co. 
Liu Huiming Dalian University of Science and Technology 
Gu Mingchu Dalian University of Science and Technology 
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