| 丙烯腈-丁二烯-苯乙烯三元共聚物/丁腈橡胶热塑性硫化胶的相容及Mullins效应研究 |
| Compatibility and Mullins Effect of ABS/NBR TPV |
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| DOI： |
| 中文关键词: 丙烯腈-丁二烯-苯乙烯三元共聚物 丁腈橡胶 热塑性硫化胶 相容剂 Mullins效应 |
| 英文关键词: ABS NBR TPV compatibilizer Mullins effect |
| 基金项目:山东省自然科学基金资助项目（ZR2012EMM-002）；山东省高等学校科技计划项目（J12LA15）；青岛市科技发展计划项目[12-1-4-3-（9）-jch] |
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| 中文摘要: |
| 采用动态硫化方法制备丙烯腈-丁二烯-苯乙烯三元共聚物（ABS）/丁腈橡胶（NBR）热塑性硫化胶（TPV），以氯化聚乙烯（CPE）为相容剂改善其界面相容性，研究CPE用量对TPV物理性能、Mullins效应和微观结构的影响。结果表明：CPE可显著改善ABS/NBR TPV的界面相容性，当CPE用量为6份时，TPV的综合性能较好；TPV在单轴循环拉伸过程中存在明显的Mullins效应，在相同的拉伸比下，TPV的最大应力、内耗能和损耗因子在第1次加载 卸载循环中最大，在第2次循环拉伸时显著下降，但随后下降幅度减小；与未相容TPV相比，相容TPV具有较高的瞬时残余形变、应力软化因子和损耗因子。扫描电子显微镜分析结果表明，相容TPV的断面较为平整，NBR硫化胶粒子均匀分散在TPV的表面。 |
| 英文摘要: |
| Thermoplastic vulcanizates（TPV） based on acrylonitrile butadiene styrene terpolymer（ABS）/NBR were prepared by dynamic vulcanization method.Chlorinated polyethylene（CPE）was used as compatibilizer，and the effects of the addition level of CPE on physical properties，Mullins effect and microstructure of the TPVs were investigated.The results showed that，CPE could improve the compatibility of ABS/NBR system，and when the addition level of CPE was 6 phr，the comprehensive properties of ABS/NBR TPV were the best.Mullins effect could be observed during the uniaxial loading unloading cycles，and the maximum stress，internal friction and tanδ under fixed deformation were significantly reduced after the first loading unloading cycle while they were only slightly reduced after later loading unloading cycles.Compared with the TPV without CPE，CPE/ABS/NBR TPV had higher residual deformation，stronger stress softening effect and higher tanδ.Morphology analysis result by SEM showed that the fracture surface of compatibilized TPV was smooth and the crosslinked NBR particles were dispersed uniformly. |
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