«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]

期数:

2022年2期

页码:

112-116

栏目:

出版日期:

2022-03-15

文章信息/Info

Title:

Comparison of structure and properties of different brands of ethylene propylene diene monomer

作者:

胡海华1; 黄溪岱1; 杨玉琼1; 戎芳仪2; 周 雷1; 吴 宇1; 李 波1; 赵洪国1; 何连成1

1. 中国石油石油化工研究院 兰州化工研究中心/甘肃省合成橡胶工程技术研究中心， 兰州 730060； 2. 同济大学 电子与信息工程学院， 上海 201804

Author(s):

HU Hai-hua1;  HUANG Xi-dai1;  YANG Yu-qiong1;  RONG Fang-yi2;  ZHOU Lei1;  WU Yu1;  LI Bo1;  ZHAO Hong-guo1;  HE Lian-cheng1

1. Lanzhou Pretrochemical Research Center/Gansu Provincial Engineering Technology Research Center of Synthetic Rubber， Petrochemical Research Institute, PetroChina, Lanzhou 730060，China; 2. School of Electronic and Information Engineering, Tongji University, Shanghai 201804，China

关键词:

三元乙丙橡胶; 硫化特性; 物理机械性能; 耐磨性能; 耐老化性能

Keywords:

ethylene propylene diene monomer;  curing characteristics;  physical and mechanical property;  wear resistance;  aging resistance

分类号:

TQ 333.4

DOI:

DOI:10.19908/j.cnki.ISSN1000-1255.2022.02.0112

文献标识码:

B

摘要:

对8个牌号三元乙丙橡胶（EPDM）的微观结构、硫化特性、物理机械性能、耐磨性能及耐老化性能进行了对比。结果表明，EPDM中第3单体亚乙烯基降冰片烯（ENB）质量分数影响了EPDM的硫化速率。8个牌号中EPDM 9950 C的硫化速率最快，EPDM 3722的硫化速率最慢；充油胶EPDM 3666的硫化速率与结构类似的EPDM相差不大，但EPDM 3666硫化胶的最大转矩和最小转矩大幅下降。乙烯基质量分数高的EPDM 6470和EPDM 5890 F硫化胶的拉伸强度、300%定伸应力及邵尔A硬度较大，撕裂性能、耐磨性能及回弹性较好。相对分子质量较大的EPDM 9950 C和EPDM 4570的压缩永久变形较小，乙烯基质量分数超过90%的EPDM 3722硫化胶的压缩永久变形最大。相对分子质量较小的EPDM及充油EPDM的拉伸强度和邵尔A硬度较低；8个牌号EPDM的耐老化性能均较好，其中ENB质量分数最小的EPDM 3722耐老化性能最好。

Abstract:

The microstructure, curing characteristics, physical and mechanical properties, wear resistance and aging resistance of eight brands of ethylene propylene diene monomer (EPDM) were compared. The results showed that the mass fraction of the third monomer vinylidene norbornene (ENB) in EPDM affected the curing rate of EPDM. Among the 8 brands, the curing rate of EPDM 9950 C was the fastest and that of EPDM 3722 was the slowest. The curing rate of oil filled EPDM 3666 was similar to that of EPDM with similar structure, but the maximum torque and minimum torque of EPDM 3666 vulcanizate decreased significantly. EPDM 6470 and EPDM 5890 F vulcanizates with high mass fraction of vinyl had higher tensile strength, modulus at 300% and Shore A hardness, and better tear resistance, wear resistance and resilience. The compression set of EPDM 9950 C and EPDM 4570 with higher relative molecular weight was the smallest, and the compression set of EPDM 3722 vulcanizate with more than 90% mass fraction of vinyl was the largest. The tensile strength and Shore A hardness of EPDM with small relative molecular weight and oil filled EPDM were lower. The aging resistance of eight brands of EPDM was good, among which EPDM 3722 with the lowest mass fraction of ENB had the best aging resistance.

参考文献/References

备注/Memo

备注/Memo:

中国石油炼化分公司项目（20-LH-26-01）。

常用功能

更新日期/Last Update: 2022-03-15