多功能橡胶助剂STU的制备及其对白炭黑/天然橡胶复合材料硫化特性的影响  

Preparation of a Multi-functional Rubber Aids STU and Its Effect on Curing Behavior of Silica/NR Compound

作　　者：杨树颜[1] 刘岚[2] 贾志欣[2] 罗远芳[2] 贾德民[2] 

机构地区：[1]东莞理工学院广东高校化工清洁生产与绿色化学品工程技术开发中心,广东东莞523808 [2]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《橡胶工业》2016年第2期84-88,共5页China Rubber Industry

基　　金：国家自然科学基金资助项目(51303026);国家自然科学基金广东省联合基金项目(U1134005);广东省战略性新型产业核心技术攻关项目(2012A090100017)

摘　　要：合成了一种新型多功能橡胶助剂STU,研究其对白炭黑/天然橡胶(NR)复合材料加工性能和硫化特性的影响。结果表明:STU结构中含有硫脲官能团和硅氧烷官能团;STU在热压条件下能够原位改性白炭黑表面,有效抑制白炭黑在橡胶基体中形成填料网络结构,改善混炼胶的加工性能;随着白炭黑用量的增大,STU/白炭黑/NR胶料的焦烧时间和正硫化时间延长,交联密度下降;白炭黑的最佳用量为30份。A new muti-functional rubber aids,N-phenyl-N′-（γ-triethoxysilane）-propyl thiourea（STU）,was prepared and its effects on the processability and curing behavior of silica/NR compound were investigated. The results showed that,with thiourea and siloxane functional groups,STU could in-situ modify silica surface in hot pressing conditions,effectively inhibit the formation of silica network in rubber matrix,and improve the processability of the compound. As the addition level of silica increased,the scorch time and optimum cure time of STU/silica/NR compound were extended,but the crosslink density was decreased. The optimum addition level of silica was 30 phr.

关 键 词：多功能橡胶助剂 天然橡胶 白炭黑 表面改性 加工性能 硫化特性 

分 类 号：TQ330.38[化学工程—橡胶工业]