A facile and green preparation of nanosilica-supported antioxidant and its reinforcement and antioxidation effect on styrene-butadiene rubber
A facile and green preparation of nanosilica-supported antioxidant and its reinforcement and antioxidation effect on styrene-butadiene rubber
复制标题
纳米二氧化硅负载抗氧剂的简便绿色制备及其对丁苯橡胶的补强和抗氧化作用
DOI：
10.1080/1023666x.2016.1132125
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发表时间：
2016-04-02
影响因子：
1.9
通讯作者：
Jia, Demin
中科院分区：
文献类型：
--
作者：
Hu, Dechao;Jia, Zhixin;Jia, Demin
以纳米二氧化硅、2-巯基苯并咪唑（MB）和硅烷偶联剂γ-氯丙基三乙氧基硅烷为原料，采用固相法制备了纳米二氧化硅负载抗氧剂。傅立叶变换红外光谱和其他表征方法证实，MB是化学键合到纳米二氧化硅的表面。SiO2-s-MB在丁苯橡胶（SBR）基体中具有较强的分散性，与SBR/m-SiO 2复合材料相比，SBR/SiO2-s-MB复合材料的力学性能得到了提高。通过对SBR/SiO2-s-MB和SBR/m-SiO 2-MB复合材料的热氧化性能测试，发现SiO2-s-MB在高温下的迁移性和挥发性较低，其抗氧化性能优于相应的低分子量MB。
A novel solid-phase method has been proposed to prepare a nanosilica-supported antioxidant by the reaction of nanosilica with 2-mercaptobenzimidazole (MB) and silane coupling agent gamma-chloropropyltriethoxysilane. Fourier transform-infrared spectroscopy and other characterization methods confirmed that MB was chemically bonded onto the surface of nanosilica. Silica-s-MB was homogeneously dispersed in a styrene-butadiene rubber (SBR) matrix with strong filler-rubber interaction, leading to enhanced mechanical performance of SBR/silica-s-MB composites compared with SBR/m-silica composites. Based on the results of thermo-oxidation testing of SBR/silica-s-MB and SBR/m-silica/MB composites containing equivalent antioxidant component, silica-s-MB showed better antioxidative efficiency than the corresponding low-molecular-weight MB owing to its lower migration and volatility at high temperature.