| 配位交联丁腈橡胶/硫酸铜复合材料的压缩Mullins效应 |
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| 引用本文： | 孙颖涛,孙龙意,王兆波.配位交联丁腈橡胶/硫酸铜复合材料的压缩Mullins效应[J].合成橡胶工业,2021,0(2):110-115. |
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| 作者姓名： | 孙颖涛 孙龙意 王兆波 |
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| 作者单位： | 青岛科技大学 材料科学与工程学院， 山东 青岛 266042 |
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| 基金项目： | 山东省自然科学基金资助项目(ZR 2017 MEM 021)。 |
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| 摘 要： | 采用配位交联法制备了丁腈橡胶（NBR）/硫酸铜（CuSO4）复合材料，考察了不同硫酸铜用量对复合材料的硫化特性、物理机械性能及压缩模式下Mullins效应的放大器效应的影响。结果表明，NBR中的氰基与CuSO4中的铜离子通过配位交联反应形成三维网络结构。在单轴循环压缩过程中，NBR/CuSO4复合材料表现出明显的Mullins效应，且随CuSO4用量的增加及应变的增大而更加显著；在同一应变下的最大压缩应力随循环次数的增加下降明显，表现出应力软化现象；瞬时残留压缩形变则随应变及循环次数的增加而增大。
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| 关 键 词： | 配位交联 丁腈橡胶 硫酸铜 复合材料 Mullins效应 |
Mullins effect of coordination cross-linking nitrile rubber/copper sulfate composites under compression mode |
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| SUN Ying-tao,SUN Long-yi,WANG Zhao-bo.Mullins effect of coordination cross-linking nitrile rubber/copper sulfate composites under compression mode[J].China Synthetic Rubber Industry,2021,0(2):110-115. |
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| Authors: | SUN Ying-tao SUN Long-yi WANG Zhao-bo |
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| Affiliation: | (College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China) |
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| Abstract: | Nitrile rubber(NBR)/copper sulfate(CuSO4)composites were prepared by coordination cross-linked method,and the effects of different amount of CuSO4 on curing characteristics of compounds,physical and mechanical properties of composites and amplification effect of Mullins effect under compression mode were investigated.The results showed that the coordination cross-linking reaction between cyano group in NBR and copper ion in CuSO4 formed a three-dimensional network structure.Mullins effect of NBR/CuSO4 composites could be observed significantly during the uniaxial cyclic compression,which was more remarkable with increasing CuSO4 amount and compression strain.The maximum compression stress under the same strain decreased significantly with increasing number of cycles,showing the phenomenon of stress softening.The instantaneous residual deformation under compression mode was increased with increasing strain and number of cycles. |
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| Keywords: | coordination cross-linking nitrile rubber copper sulfate composite Mullins effect |
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