|本期目录/Table of Contents|

[1]陆 逊,王君豪,朱大志,等.撕裂模式下乙烯-乙酸乙烯酯共聚物/氯丁橡胶热塑性硫化胶的Mullins效应及其可逆回复[J].合成橡胶工业,2023,1:14-18.
　LU Xun,WANG Jun-hao,ZHU Da-zhi,et al.Mullins effect under tearing mode and its reversibility of ethylene-vinyl acetate copolymer/chloroprene rubber thermoplastic vulcanizates[J].China synthetic rubber industy,2023,1:14-18.
点击复制

撕裂模式下乙烯-乙酸乙烯酯共聚物/氯丁橡胶热塑性硫化胶的Mullins效应及其可逆回复(PDF)

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

期数:
2023年1期
页码:
14-18
栏目:
出版日期:
2023-01-15

文章信息/Info

Title:
Mullins effect under tearing mode and its reversibility of ethylene-vinyl acetate copolymer/chloroprene rubber thermoplastic vulcanizates
文章编号:
1000-1255（2023）01-0014-05
作者:
陆 逊1; 王君豪2; 朱大志1; 王兆波1?鄢
1. 青岛科技大学 材料科学与工程学院，山东 青岛 266042； 2. 山东大学（威海） 机电与信息工程学院，山东 威海 264209
Author(s):
LU Xun1;  WANG Jun-hao2;  ZHU Da-zhi1;  WANG Zhao-bo1
1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; 2. School of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, China
关键词:
乙烯-乙酸乙烯酯共聚物; 氯丁橡胶; 撕裂模式; Mullins效应; 可逆回复
Keywords:
ethylene-vinyl acetate copolymer;  chloroprene rubber;  tearing mode;  Mullins effect;  reversibility behavior
分类号:
TQ 334.9
DOI:
DOI:10.19908/j.cnki.ISSN1000-1255.2023.01.0014
文献标识码:
A
摘要:
采用动态硫化法制备了乙烯-乙酸乙烯酯共聚物（EVA）/氯丁橡胶（CR）热塑性硫化胶（TPV），对其微观形貌、撕裂强度、撕裂模式下的Mullins效应、热处理后的可逆回复行为及其机制进行了研究。结果表明，EVA/CR TPV橡塑质量比为30/70时其撕裂模式下的应变和撕裂强度较高，橡胶相与树脂相呈“海-岛”结构；撕裂模式下EVA/CR TPV的单轴循环测试中表现出明显的Mullins效应，增大应变时，其最大撕裂强度、瞬时残余应变、内耗值和阻尼因子均增加，但应力软化因子趋于下降；随着热处理温度的上升，Mullins效应的可逆回复效果获得改善，且温度为70 ℃时其可逆回复行为最好。
Abstract:
Thermoplastic vulcanizate (TPV) based on ethylene-vinyl acetate copolymer (EVA)/chloroprene rubber (CR) blends were prepared by dynamic vulcanization. Its micromorphology, tearing strength, Mullins effect and reversible behavior and its mechanism under tearing mode at different heat treatment temperatures were investigated. The results showed that the strain and tear strength of EVA/CR TPVunder tearing mode were higher when the rubber-plastic mass ratio was 30/70, and the rubber phase and resin phase presented a “sea-island” structure. A significant Mullins effect was displayed during the uniaxial cycle loading-unloa-ding under tearing mode of EVA/CR TPV. The ma-ximum tear strength, residual deformation, internal friction and damping factor were increased with increasing of strain under tearing mode in the cycle uniaxial test, while the degree of stress softening effect tended to decrease. With increase of heat treatment temperature, the recovery ability of EVA/CR TPV was significantly improved, and the best reco-very temperature was 70 ℃.

参考文献/References

［1］ 刘菲菲， 廖珂锐， 王兆波. 炭黑增强氯丁橡胶硫化胶压缩Mullins效应的强化［J］. 合成橡胶工业， 2020， 43（1）： 38-42.［2］ 李帅， 魏东亚， 王兆波. ZDMA补强EVA/CPE/NBR共混型热塑性硫化胶的Payne和Mullins效应研究［J］. 橡胶工业， 2014， 61（12）： 709-714.［3］ 孙颖涛， 刘化通， 王兆波. 撕裂模式下乙烯-丙烯酸共聚物/丁腈橡胶热塑性硫化胶的Mullins效应及其可逆回复［J］. 合成橡胶工业， 2021， 44（1）： 28-32.［4］ van Duin M. Recent developments for EPDM-based thermoplastic vulcanisates［J］. Macromolecular Symposia， 2006， 233（1）： 11-16.

备注/Memo

备注/Memo:
山东省自然科学基金资助项目（ZR 2021 ME 028）
更新日期/Last Update: 2023-01-15