粉末丁腈橡胶改性高抗冲聚苯乙烯阻尼性能研究  

Study on damping performance of nitrile rubber powder⁃modified high⁃impact polystyrene

作　　者：李国林 LI Guolin(School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430000,China)

机构地区：[1]华中科技大学机械科学与工程学院,武汉430000

出　　处：《中国塑料》2025年第2期12-14,共3页China Plastics

摘　　要：以均聚聚丙烯和粉末丁腈橡胶为基材通过共混挤出方式制备了阻尼母粒,并研究了不同母粒含量对高抗冲聚苯乙烯力学性能、阻尼性能和热性能影响。结果表明:当母粒添加量达到30%(质量分数,下同)时,高抗冲聚苯乙烯缺口冲击强度由9.1 kJ/m~2降低至3.5 kJ/m~2,拉伸强度由34.1 MPa降低至21.3 MPa;20℃损耗因子由0.015提高到0.026,60℃损耗因子由0.023提高到0.034;热重分析结果显示HIPS热稳定性随着母粒含量增加不断提高。A type of damping masterbatch was prepared through blending and extrusion using homopolymer polypropylene and nitrile rubber powders as raw materials,and the effect of masterbatch content on the mechanical,damping,and ther-mal properties of modified high-impact polystyrene(HIPS)were investigated.The result indicated that,when the con-tent of the masterbatch was 30 wt%,the notch impact strength of the modified HIPS decreased from 9.1 kJ/m^(2) to 3.5 kJ/m^(2),and its tensile strength decreased from 34.1 MPa to 21.3 MPa,its loss factor at 20℃ increased from 0.015 to 0.26,and its loss factor at 60℃increased from 0.023 to 0.034.Thermogravimetric analysis results indicated that the heat resis-tance of the modified HIPS increased with an increase in the content of the damping masterbatch.

关 键 词：粉末丁腈橡胶 高抗冲聚苯乙烯 阻尼性能 损耗因子 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]