location: Current position: Home >> Scientific Research >> Paper Publications

硫醇调节黏接型氯丁橡胶的结构与性能

Hits:

Indexed by:期刊论文

Date of Publication:2012-05-15

Journal:合成橡胶工业

Included Journals:PKU、ISTIC、CSCD

Volume:35

Issue:3

Page Number:179-182

ISSN No.:1000-1255

Key Words:氯丁橡胶;正十二碳硫醇;相对分子质量调节剂;微观结构;热性能;溶液稳定性

Abstract:以正十二碳硫醇为相对分子质量调节剂,参照传统调丁型氯丁橡胶(CR,牌号为244)的生产工艺,合成了硫醇调节型CR,考察了调节剂用量对CR相对分子质量的影响,通过傅里叶变换红外光谱和核磁共振氢谱表征了CR的微观结构,研究了CR的热性能和溶液稳定性,并与调丁型CR进行了比较.结果表明,随着硫醇用量的增加,CR的门尼黏度呈明显的下降趋势,达到相同调节效果时,硫醇用量仅为调节剂丁的1/4;硫醇调节型CR以反式-1,4-构型为主,以头-尾方式相连,且反式-1,4-结构含量略高于调丁型CR;硫醇调节型CR和调丁型CR的玻璃化转变温度基本相当,且随着温度的升高,出现晶区解晶现象;硫醇调节型CR与调丁型CR相比具有更优异的溶液黏度稳定性.

Pre One:Anionic synthesis of binary random in-chain multi-functionalized poly(styrene/butadiene/isoprene and dimethyl [4-phenylvinyl)-phenyl]silane) (PS-DPESiH, PB-DPESiH, PI-DPESiH) copolymers

Next One:ynthesis of Novel Photochromic Spiropyran Dyes Containing Quaternary Ammonium Salt or Cinnamoyl Moiety and Their Properties as Photoinitiators