多巴胺改性硅炭黑增强橡胶复合材料性能  

Performance of dopamine modified silicon carbon black reinforced rubber composite

作　　者：梁继才[1,2] 孙磊明 刘天宝 李义[1,2] 王绍强[3] 徐曦 LIANG Ji-cai;SUN Lei-ming;LIU Tian-bao;LI Yi;WANG Shao-qiang;XU Xi(College of Materials Science and Engineering,Jilin University,Changchun 130022,China;Key Laboratory of Automobile Materials,Ministry of Education,Jilin University,Changchun 130022,China;School of Computer Science and Technology,Changchun University,Changchun 130022,China;Qrthodontics Department of Hospital No,964 of the Chinese People's Liberation Army Joint Support Force,Changchun 130022,China)

机构地区：[1]吉林大学材料科学与工程学院,长春130022 [2]吉林大学汽车材料教育部重点实验室,长春130022 [3]长春大学计算机科学技术学院,长春130022 [4]联勤保障部队第964医院口腔正畸科,长春130022

出　　处：《吉林大学学报（工学版）》2022年第5期1030-1036,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：吉林省科技厅重点研发项目(20200401035GX);吉林省科技厅自然科学基金项目(20190302055GX)。

摘　　要：以15份稻壳制得的硅炭黑(SiCB)为基础,详细研究了经多巴胺(DA)改性的SiCB作为填料对天然橡胶/丁二烯橡胶(NR/BR)复合材料性能的影响。在SiCB表面接枝聚多巴胺(PDA)涂层后,不仅提高了SiCB的表面活性,促进了SiCB的分散,而且有效地解决了SiCB与基体相容的问题,极大提高了两者的界面作用力,使橡胶复合材料的机械性能得到有效提高。结果表明:经多巴胺改性的填料,通过机械共混制得的NR/BR/PDA-SiCB性能得到了很大提高,较NR/BR/SiCB复合材料,其拉伸强度提高了60.6%,断裂伸长率提高了29%,松弛强度也得到明显提高,玻璃化转变温度(T;)提高2.16℃,热稳定性也到得相对提高。Based on 15 phr of silicon carbon black(SiCB)made from rice husk,the effect of dopamine(DA)modified SiCB as a filler on the properties of natural rubber/butadiene rubber(NR/BR)composites was studied in detail.After grafting polydopamine(PDA)coating on the surface of SiCB,it not only improve the surface activity of the filler,promotes the dispersion of the filler,but also effectively solves the problem of compatibility between the filler and the matrix,greatly improves the interfacial force between the two,and effectively improves the mechanical properties of rubber composites.The results show that the performance of the NR/BR/PDA-SiCB prepared by mechanical blending of the dopamine-modified filler has been greatly improved.Compared with the NR/BR/SiCB composites,its tensile strength is increased by 60.6%,and the elongation at break has been increased by 29%,the relaxation strength has also been significantly improved,the glass transition temperature(Tg)has increased by 2.16°C,and the thermal stability has also been relatively improved.

关 键 词：硅炭黑 聚多巴胺 NR/BR复合材料 机械性能 

分 类 号：TG356[金属学及工艺—金属压力加工]