摘要
通过絮凝-酸沉降法制备了一种复合补强剂——黑液-硅藻土共沉物(CLD),将其分别与丁腈橡胶(NBR)和丁苯橡胶(SBR)机械共混制得NBR/CLD与SBR/CLD复合材料。考察了CLD的含量对橡胶复合材料硫化特性、交联密度、力学性能、热氧老化性能以及热性能的影响。结果表明:随着CLD的加入,焦烧时间与正硫化时间逐渐降低,硫化速度逐渐提高;交联密度逐渐增加;力学性能逐渐增强;但老化性能及热性能没有得到改善。
A synthetic reinforcing agent,co-precipitate of lignin and diatomite（CLD） was prepared by means of coagulation and acid precipitation,and then acrylonitrile-butadiene rubber（NBR）/CLD and styrene-butadiene rubber（SBR）/CLD composites were prepared by blending NBR or SBR with CLD under mechanical mixing.The effects of the loading of CLD on curing characteristics,cross-linking densities,mechanical properties,thermal properties and thermo-oxidative ageing properties were evaluated.The results showed the scorch time and optimum cure time were reduced and a remarkable enhancement in cross-linking densities and mechanical properties was observed,however,the thermal oxidative ageing properties decreased with the increase of CLM loading.
出处
《精细化工中间体》
CAS
2011年第2期51-55,共5页
Fine Chemical Intermediates
基金
湖南师范大学潇湘学者启动基金资助课题(化050613)
关键词
黑液硅藻土共沉物
丁腈橡胶
丁苯橡胶
力学性能
co-precipitation of black liquid and diatomite
NBR
SBR
mechanical properties
