稻壳基二氧化硅/碳复合材料的表面改性及对天然橡胶的影响  

Surface Modification of Silica/carbon Black Derived from Rice Husks and Its Influence on Natural Rubber Composites

作　　者：隋佳烊 刘晓旸[1] 钱苗苗 朱燕超 薛北辰 丰祎 田玉美 王晓峰[1] SUI Jiayang;LIU Xiaoyang;QIAN Miaomiao;ZHU Yanchao;XUE Beichen;FENG Yi;TIAN Yumei;WANG Xiaofeng(State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学化学学院无机合成与制备化学国家重点实验室

出　　处：《高等学校化学学报》2019年第7期1561-1570,共10页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51502108)资助~~

摘　　要：以稻壳基二氧化硅/碳复合材料(SiCB)作为天然橡胶(NR)的补强填料,采用表面化学改性的方法将天然乳胶(NRL)接枝到SiCB表面,改善其与NR基体的相容性.研究了不同处理方法对接枝NRL效率的影响,以及填料填入NR后对硫化橡胶力学性能的影响.结果表明,经过硝酸和γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(γ-MPTMS)预处理,NRL能高效接枝在SiCB表面,得到的样品SiCBMR10比未处理的SiCBP有更强的补强能力.硫化胶NR/SiCBMR10的拉伸强度、300%定伸和撕裂强度较NR/SiCBP分别提高了61.06%,27.15%和15.90%,与传统炭黑产品N774填充的硫化胶NR/N774的力学性能相近.经过NRL接枝改性的SiCBMR10具有替代商业炭黑的应用前景.Surface modification of silica/carbon black(SiCB)derived from rice husks was carried out by grafting with natural rubber latex(NRL).The effect of different pre-treatments on the grafting efficiency was investigated and the mechanical properties of NR/NRL-grafted SiCB vulcanizates were tested.The results indicated that the SiCB pre-treated by nitric acid and 3-(trimethoxysilyl)propyl methacrylate(γ-MPTMS)can be effectively grafted with NRL via the strong interfacial bonding.The above modified SiCB(SiCB MR10)exhibited good dispersion state and superior reinforcement ability,attributed to the use of NRL as a compatibilizer for filler-matrix composites.The tensile strength,stress at 300%elongation and tear strength of NR/SiCB MR10 were 61.06%,27.15%and 15.90%higher than those of NR/SiCB P,respectively.The modified SiCB MR10 achieved the similar reinforcement with the conventional carbon black(N774)in mechanical properties of NR vulcanizate.The results showed that SiCB MR10 exhibited an ideal reinforcing effect on rubber.

关 键 词：二氧化硅/碳复合材料 表面改性 天然乳胶 力学性能 

分 类 号：O636[理学—高分子化学] O611[理学—化学]