机械混炼过程对天然橡胶/有机蒙脱土纳米复合材料结构的影响  

Impact of Mechanical Mixing Process on the Structure of Natural Rubber/Organo-montmorillonite Nanocomposite

作　　者：王彧[1] 丁倩莹 罗洁[3] 

机构地区：[1]江苏省环境科学研究院江苏省环境工程重点实验室,江苏南京210036 [2]江苏盛立环保工程有限公司,江苏南京210019 [3]河南科技大学化工与制药学院,河南洛阳471003

出　　处：《广州化学》2016年第4期7-12,共6页Guangzhou Chemistry

摘　　要：采用机械混炼插层法制备天然橡胶(NR)/有机蒙脱土(OMMT)纳米复合材料,研究混炼过程对复合材料结构的影响。结果表明,剪切作用越强并不越有利于大分子链的插层,当辊距为3 mm时,适当增加薄通的次数,有益于分子链插入蒙脱土层间。当薄通次数达到40次时,可形成剥离型的纳米复合材料。且在共混过程中加入偶联剂,可使得蒙脱土与橡胶间的化学交联的比例提高,从而改善复合材料的物理机械性能和热氧老化性能。Natural rubber/organo–montmorillonite（NR/OMMT） nanocomposites were prepared by means of mechanical mixing intercalation method. During this process, mixing was a great influence on the structure of the composites. The results showed that, in the 3mm roller spacing, increasing the thin-passing times could accelerate the molecular chains into the interlayer and form exfoliative nanocomposites, with 40 thin-passing times. In the thin-passing process, adding the coupling agent could not only enhance the ability of rubber molecules into the crystal layers, but also improve the mechanical properties and thermal aging properties of composite materials.

关 键 词：机械混炼插层法 天然橡胶 有机蒙脱土 

分 类 号：TQ317[化学工程—高聚物工业]