摘要
采用核磁共振波谱、差示扫描量热和热失重等方法对比解析研究了中国石油吉林石化公司生产的牌号为J-0010的二元乙丙橡胶(J-0010 EPM)和国外同类产品(Foreign EPM)。结果表明,J-0010 EPM所含乙烯单元质量分数为47. 6%,Foreign EPM为44. 1%;前者的连续链段要多于后者,导致其局部有序现象更加明显,因而其链段分布还需进一步优化。两种二元乙丙橡胶经热处理后在玻璃化转变区均出现异常吸收峰,表明二者均存在局部有序的聚集态结构,且J-0010 EPM中类似微晶的局部有序结构较Foreign EPM要多。两种二元乙丙橡胶均具有良好的热稳定性。
Ethylene propylene rubber( EPM) J-0010 produced by Jilin Petrochemical Company,Petro China and a similar foreign EPM product were compared and studied by nuclear magnetic resonance spectroscopy,differential scanning calorimetry and thermogravimetic analysis. The results showed that the mass fraction of ethylene unit in J-0010 EPM was 47. 6%,and that in foreign EPM 44. 1%. The former had more continuous segments than the latter,which resulted in more local ordered structure,so that its segments distribution need to be optimized. After heat treatment, the abnormal absorption peaks developed in the glass transition zone for both the two kinds of EPM,indicating the existence of local ordered aggregation structure,and the microcrystal-like local ordered structure in J-0010 EPM was more than that in foreign EPM. And the two kinds of EPM both had good thermal stability.
作者
王永鹏
杨雨富
王刚
刘振国
杨博
王博
张海博
WANG Yong-peng;YANG Yu-fu;WANG Gang;LIU Zhen-guo;YANG Bo;WANG Bo;ZHANG Hai-bo(Research Institute of Jilin Petrochemical Company,PetroChina ,Jilin 132021,China;National Joint Engineering laboratory for High Performance Polymer Synthesis Technology, Jilin University,Changchun 130012,China;College of Materials Science and Engineering, Jilin Institute of Chemical Technology,Jilin 132022,China)
出处
《合成橡胶工业》
CAS
北大核心
2019年第1期37-40,共4页
China Synthetic Rubber Industry
关键词
二元乙丙橡胶
分子序列结构
固态聚集态
核磁共振波谱
差示扫描量热
ethylene propylene rubber
molecular sequence structure
solid aggregative state
nuclear magnetic resonance spectroscopy
differential scanning calorimetry
