硅藻土/白炭黑复合填料的补强性研究  

Study on Reinforcement of Diatomite/Silica Composite Filler

作　　者：张兆红[1] 李培培[1] 邢立华[1] 王再学[1] 苟家龙 徐云慧[1] ZHANG Zhaohong;LI Peipei;XING Lihua;WANG Zaixue;GOU Jialong;XU Yunhui(Xuzhou College of Industrial Technology,Xuzhou 221140,China)

机构地区：[1]徐州工业职业技术学院,徐州221140

出　　处：《硅酸盐通报》2021年第7期2264-2269,共6页Bulletin of the Chinese Ceramic Society

基　　金：江苏徐州市级课题(KC18153);江苏省高职院校教师专业带头人高端研修项目(2020GRGDYX098);2021年江苏高校“青蓝工程”资助。

摘　　要：为拓展硅藻土在高分子复合材料中的应用,将硅藻土/白炭黑填充到天然橡胶/丁苯橡胶/顺丁橡胶中制备了复合材料。通过RPA2000和扫描电镜分析了复合填料的Payne效应和分散性,考察了硅藻土用量对复合材料工艺性能、力学性能、耐磨耗性能影响。结果表明:少量硅藻土的加入有利于白炭黑在橡胶中的分散,能降低复合材料的门尼粘度和Payne效应,提高复合材料的硫化速度,缩短硫化时间,复合填料的补强效果较好;随着硅藻土用量的增加,复合填料容易聚集,其力学性能呈下降趋势,而磨耗性能变化不大;当硅藻土用量10~20份时,复合材料的综合性能最好。In order to expand the application of diatomite in polymer composites,the composite material was prepared by diatomite/silica composite filler into natural rubber/styrene butadiene rubber/butadiene rubber(NR/SBR/BR).The Payne effect and dispersion of the composite fillers were analyzed by RPA2000 and SEM.The effects of diatomite content on the technological properties,mechanical properties,and wear resistance of the composites were investigated.The results show that the addition of a small amount of diatomite is beneficial to the dispersion of silica in rubber,reduce the Mooney viscosity and Payne effect of the composite material,improve the curing speed and shorten the curing time,and the composite filler has better reinforcement effect.The composite filler is easy to aggregate and the mechanical properties of the composites are decreased,the wear properties are changed little when the amount of diatomite is increased.The composite material has the best comprehensive performance when the diatomite dosage is 10~20 phr.

关 键 词：硅藻土 白炭黑 天然橡胶 PAYNE效应 补强性 复合材料 

分 类 号：TD985[矿业工程—选矿]