摘要
采用熔融共混法制备蒙脱土(MMT)/BR复合材料,研究MMT及其改性产品和硫化体系对复合材料结构和性能的影响。结果表明,Na-MMT,DK1N和DK4均能明显缩短胶料的焦烧时间和正硫化时间;与硫化剂DCP硫化体系相比,硫黄硫化体系有利于有机蒙脱土插层的进行,但也可造成部分层片受限;制备过程对DK1N/BR复合材料中DK1N层间距的影响较为明显;与BR相比,硫黄硫化MMT/BR复合材料相对交联密度减小,硫化剂DCP硫化复合材料相对交联密度增大;MMT/BR复合材料相对交联密度由小到大顺序为DK1N/BR,DK4/BR和Na-MMT/BR复合材料。
The effects of the montmorillonite（MMT） and its modified products,including Na-MMT and organic montmorillonite（OMMT）,as well as the curing system,on the structure and properties of MMT/BR composite prepared by melting mixing method,was investigated.The results showed that,the scorch time and optimum curing time of rubber compound reduced significantly by using Na-MMT,DK1N OMMT and DK4 OMMT;compared to DCP curing system,sulfur curing system enhanced the intercalation of OMMT,but could cause confined space by part of the silicate layers;the preparation method had significant effect on the layer spacing of DK1N OMMT in the DK1N/BR composite;the relative crosslink density of sulfur-cured MMT/BR composite decreased and that of DCP-cured composite improved compared to that of BR;the relative crosslink density of MMT/BR composite was in the order of DK1N/BR.
出处
《橡胶工业》
CAS
北大核心
2007年第8期453-457,共5页
China Rubber Industry
关键词
蒙脱土
BR
复合材料
相对交联密度
montmorillonite
BR
composite
relative crosslink density
