离子液体改性白炭黑/天然橡胶复合材料的制备及性能  

Preparing and Property of Ionic Liquid Modified SiO_2/Natural Rubber Composites

作　　者：王兵辉[1] 熊玉竹[1,2] 吴胜学 张清坡 王倩 江猛[1] Binghui Wang;Yuzhu Xiong;Shengxue Wu;Qingpo Zhang;Qian Wang;Meng Jiang(College of Materials and Metallurgy, University of Guizhou;Guizhou Province Engineering Laboratory for Rubber Composites, University of Guizhou , Guiyang 550025, China)

机构地区：[1]贵州大学材料与冶金学院 [2]贵州省橡胶复合材料工程实验室,贵州贵阳550025

出　　处：《高分子材料科学与工程》2018年第5期84-90,98,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51663003);黔科合支撑[2017]2301;黔教研合JPKC字[2015]007

摘　　要：用离子液体1-烯丙基-3-甲基氯化咪唑(AMI)改性白炭黑(SiO_2),制备改性白炭黑/天然橡胶(NR)复合材料。采用红外光谱、X射线光电子能谱、扫描电镜等方法分析了改性前后白炭黑的微观结构,研究了AMI对SiO_2/NR复合材料结构与性能的影响。结果表明,AMI改性白炭黑可明显提高白炭黑的分散性,减小白炭黑在橡胶基体中的实际分布粒径,提高白炭黑与橡胶基体的界面相互作用,增加橡胶复合材料的结合胶含量,提高复合材料的综合力学性能。当AMI用量为2 phr时,白炭黑在橡胶基体中的分散性最好,分布粒径最小,结合胶含量最高,综合力学性能最好。与未改性的SiO_2/NR复合材料相比,AMI-SiO_2/NR复合材料拉伸强度提高了18%,撕裂强度提高了41.4%,300%定伸应力提高了39.2%,100%定伸应力提高了25%。Ionic liquid 1-allgl-3-methylimidazolium chloride（ AMI） was employed to modify silica,and modified SiO2/NR composites was prepared. Silica microstructure before and after modification was characterized by Fourier transform infrared spectroscopy（ FT-IR）,X-ray photoelectron spectroscopy（ XPS） and scanning electron microscope（ SEM）.The effect of AMI on structure and performance of SiO2/NR composite was studied. The result shows thatthe dispersion of AIM-modified SiO2 improves obviously,the practical distribution size decreases in rubber matrix,interface interaction is strengthened between silica andrubber matrix,the content of bound rubber increases evidently,overall mechanical property of composite material is improved. When the AMI content is 2 phr,the dispersion of silica is the best in rubber matrix,the distribution size is the minimum,the content of bound rubber reaches the maximum value,overall mechanical property of composite material is the best. Compared with non-modified SiO2/NR composites,the tensile strength of AMI-SiO2/NR composite increases by 18%,tear strength advances by 41. 4%,modulus at 300% elongation improves by 39. 2%,modulus at 100% elongation enhances by 25%.

关 键 词：离子液体 白炭黑 天然橡胶复合材料 力学性能 

分 类 号：TQ332.5[化学工程—橡胶工业]