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

期数:

2023年6期

页码:

457-464

栏目:

出版日期:

2023-11-15

文章信息/Info

Title:

Calculation of stress-strain relationship of chlorinated polyethylene rubber/nitrile rubber blend by regulating cross-linking density of chlorinated polyethylene rubber phase

文章编号:

1000-1255（2023）06-0457-08

作者:

孙臻豪; 邓 涛

青岛科技大学 高分子科学与工程学院，山东 青岛 266042

Author(s):

SUN Zhen-hao;  DENG Tao

School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

关键词:

氯化聚乙烯橡胶; 丁腈橡胶; 机械共混法; 硫化胶; 平衡溶胀法; 交联密度; 拟合模型; 力学性能

Keywords:

chlorinated polyethylene rubber;  nitrile rubber;  mechanical blending;  vulcanizate;  equilibrium swelling method;  cross-linking density;  fitting model;  mechanical property

分类号:

TQ 333.7

DOI:

DOI:10.19908/j.cnki.ISSN1000-1255.2023.06.0457

文献标识码:

A

摘要:

以氯化聚乙烯橡胶（CM）和丁腈橡胶（NBR）为主要原料，采用机械共混法制备了CM/NBR共混硫化胶，通过改变CM/NBR共混硫化胶中CM相硫化体系的用量并采用平衡溶胀法、力学性能测试、理论计算等手段表征了CM/NBR共混硫化胶中CM相的交联密度及CM/NBR共混硫化胶的应力-应变关系，研究了CM相交联密度变化对CM/NBR共混硫化胶中两相定伸应力匹配程度和力学性能的影响。结果表明，由CM相交联密度增加所引起CM/NBR共混硫化胶定伸应力的变化大于CM相本身的定伸应力变化；随着定伸应力的增加，CM相交联密度变化对CM/NBR共混硫化胶定伸应力的影响增大；通过CM/NBR共混硫化胶中CM相和NBR相应力-应变关系的对比和CM/NBR共混硫化胶力学性能的变化验证了CM相交联密度的降低是两相定伸应力逐渐匹配的过程；与测试的应力-应变关系相比，采用拟合模型预测的共混硫化胶应力-应变关系的误差相对较小，表明此法具有一定的适用性。

Abstract:

Chlorinated polyethylene rubber (CM)/nitrile rubber (NBR) blend vulcanizates were prepared by mechanical blending method with CM and NBR as main raw materials, the cross-linking density of CM phase in CM/NBR blend vulcanizate and the stress-strain relationship of CM/NBR blend vulcaizate were characterized by regulating the dose of vulcanization system of CM phase in CM/NBR blend combined with the means of equilibrium swelling method, testing mechanical properties and theoretical calculation, and the influence of the change of cross-linking density of CM phase on matching degree of the modulus of two phase in CM/NBR blend vulcanizate and mechanical properties of CM/NBR blend vulcanizate were studied. The results showed that the change of the modulus of CM/NBR blend vulcanizate caused by the increase in cross-linking density of CM phase was greater than that of its own; with the increase of modulus, the influence of the change of cross-linking density of CM phase on the modulus of CM/NBR blend vulcanizate increased; by comparing the stress-strain relationship of CM phase and NBR phase in CM/NBR blend vulcanizate and the change of mechanical properties of CM/NBR blend vulcanizate, it was proved that the decrease of the cross-linking density of CM phase was a process of the gradual matching of the modulus of the two phase; compared with the error of the measured stress-strain relation, that of the stress-strain relationship predicted by fitting model was relatively smaller, which indicated that fitting model had certain applicability.

参考文献/References

［1］ 韩瑶峰. 丁腈橡胶共混改性工艺的优化［J］. 化工管理， 2016（23）： 262-264.［2］ 程安仁， 矫阳， 陆永俊， 等. 天然橡胶/三元乙丙橡胶并用胶共混改性研究进展［J］. 合成橡胶工业， 2022， 45（3）： 259-267.［3］ 高玮， 郝同辉， 张作才， 等. 探究PVC/PNBR共混胶力学性能的影响因素［J］. 胶体与聚合物， 2015， 33（1）： 26-29.［4］ 沈建祥. 弹性体基纳米复合材料的微观结构与宏观力学行为的分子动力学模拟研究［D］. 北京： 北京化工大学， 2014.［5］ 王峰， 马妍， 康鑫， 等. 硬脂酸盐对氯化聚乙烯橡胶性能的影响［J］. 橡胶科技， 2020， 18（7）： 392-395.［6］ 王亮燕， 陶平， 邹惠芳， 等. 几种配合剂对氯化聚乙烯橡胶性能影响的研究［J］. 橡胶科技， 2018， 16（8）： 17-21.［7］ 黄明璐. 噻二唑硫化体系对氯化聚乙烯橡胶性能的影响［J］. 橡胶科技， 2014， 12（3）： 23-25.［8］ Han Ruijie， Wu Ying， Quan Xudong， et al. Effects of crosslinking densities on mechanical properties of nitrile rubber composites in thermal oxidative aging environment［J］. Journal of Applied Polymer Science， 2020， 137（36）： 49076.［9］ 殷敬华， 李斌才. 聚丁二烯橡胶的高聚物-溶剂相互作用参数和有效网链密度的测定［J］. 化工学报， 1983（1）： 90-97.［10］ 吴培熙， 张留成. 聚合物共混改性［M］. 3版. 北京： 中国轻工业出版社， 2017：75.

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更新日期/Last Update: 2023-11-15