Effects of antioxidant functionalized silica on reinforcement and anti-aging for solution-polymerized styrene butadiene rubber: Experimental and molecular simulation study
Effects of antioxidant functionalized silica on reinforcement and anti-aging for solution-polymerized styrene butadiene rubber: Experimental and molecular simulation study
复制标题
抗氧功能化二氧化硅对溶液聚合丁苯橡胶补强和抗老化效果的实验和分子模拟研究
DOI：
10.1016/j.matdes.2018.05.048
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发表时间：
2018-09-15
影响因子：
8.4
通讯作者：
Wu, Sizhu
中科院分区：
文献类型：
--
作者：
Luo, Kaiqiang;Zheng, Wei;Wu, Sizhu
通过对巯基丙基三甲氧基硅烷(KH590)将抗氧剂N-(4-苯胺苯基)马来酰亚胺(MC)接枝到二氧化硅表面制备了新型抗氧剂功能化二氧化硅(SiO2-g-MC)。采用实验和分子模拟方法研究了SiO2-g-MC对溶液聚合丁苯橡胶（SSBR）的补强和抗老化效果。研究发现，由于SiO2-g-MC与SSBR之间良好的分散性和强的界面相互作用，SiO2-g-MC在SSBR基体中的补强效果比纯二氧化硅（SiO2）更有效。与KH590改性二氧化硅(SiO2-KH590)和SiO2相比，SiO2-g-MC具有更好的硫化性能，可以大大提高SSBR复合材料的抗热氧化性能。此外，在二氧化硅表面接枝MC不仅可以抑制游离MC的迁移，而且可以减少游离MC对SSBR复合材料交联密度的负面影响。因此，SiO2-g-MC/SSBR复合材料在热氧化老化过程中表现出比SiO2-KH590/MC/SSBR复合材料更优异的力学性能。这些结果表明SiO2-g-MC可以作为功能填料用于制备高性能SSBR复合材料，而且理论分子模拟过程可以帮助我们更好地了解SSBR复合材料的结构-性能关系。 (C) 2018 Elsevier Ltd. 保留所有权利。
A new type of antioxidant functionalized silica (SiO2-g-MC) was prepared by grafting antioxidant N-(4-aniline phenyl) maleic imide (MC) onto the surface of silica via.-mercaptopropyl trimethoxysilane (KH590). The effects of SiO2-g-MC on reinforcement and anti-aging for solution-polymerized styrene butadiene rubber (SSBR) were investigated by experimental andmolecular simulation methods. Itwas found that the reinforcement of SiO2-g-MC wasmuchmore effective than that of the neat silica (SiO2) in SSBRmatrix due towell-dispersion and strong interfacial interaction between SiO2-g-MC and SSBR. Compared with KH590 modified silica (SiO2-KH590) and SiO2, SiO2-g-MC had better vulcanization behavior and could greatly improve thermo-oxidation resistance of SSBR composite. Furthermore, grafting MC onto the surface of silica could not only restrain themigration of freeMC, but also reduce the negative influence of free MC on cross-linking density of SSBR composite. Therefore, SiO2-g-MC/SSBR composite exhibited more preeminent mechanical properties than SiO2-KH590/MC/SSBR composites during the thermo-oxidation aging process. These results indicated that SiO2-g-MC could be used as a functional filler for the preparation of high performance SSBR composites, and moreover, the theoretical molecular simulation process can help us gain a better insight into the structure-property relationship for SSBR composite. (C) 2018 Elsevier Ltd. All rights reserved.