文献类型：期刊文献

英文题名：Promoting the dispersibility of silica and interfacial strength of rubber/silica composites prepared by latex compounding

作者：Sun, Ying[1];Cheng, Zhimin[1];Zhang, Ling[1];Jiang, Haibo[1];Li, Chunzhong[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai, Peoples R China

年份：2020

卷号：137

期号：46

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20202408819015);WOS:【SCI-EXPANDED(收录号:WOS:000539242800001)】；

基金：The Fundamental Research Funds for the Central Universities, Grant/Award Number: 222201718002; The Innovation Program of Shanghai Municipal Education Commission; Foundation for Innovative Research Groups of the National Natural Science Foundation of China, Grant/Award Number: 21838003; 91834301; 21878092; The Shanghai Scientific and Technological Innovation Project, Grant/Award Number: 18JC1410600; The Social Development Program of Shanghai, Grant/Award Number: 17DZ1200900; 18DZ2252400; Fundamental Research Funds for the Central Universities; Shanghai Municipal Education Commission; National Natural Science Foundation of China

语种：英文

外文关键词：compatibilization; composites; mechanical properties; surfaces and interfaces; surfactants

摘要：The dispersibility of precipitated silica and its interfacial interaction with rubber matrix can affect the performances of tires which is a difficult problem to be solved. A well-dispersed silica dispersion was obtained through ball milling and modification process followed by heat treatment to enhance the properties of NR composites prepared by latex compounding. Benefiting from the modifier Si-747, the well-dispersed silica/NR composite (Silica-MSH-C) shows excellent tensile strength of 30.8 +/- 0.5 MPa, which is 17.6 +/- 3.8% higher than latex compounding pure silica/NR composite (Silica-C) and 21.7 +/- 4.3% higher than traditional mechanical blending pure silica/NR composite (T-Silica-C). The tan delta values indicate that Silica-MSH-C has better dynamic properties and also has stronger interface strength according to swelling tests, heat capacity curves and Mooney-Rivlin equation. The molecular dynamics (MD) simulation further shows the binding energy between NR and Si-747 modified SiO(2)is 58.88 Kcal/mol larger than the value of NR and pure silica.