【作者】 许海燕； 吴驰飞；

【Author】 Haiyan Xu , Chifei Wu Polymer Alloy La, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China Key Laboratory of Ministry of Agriculture for Natural Rubber Processing, Zhanjiang 524001, P.R..China

【机构】 华东理工大学材料科学与工程学院高分子合金研究室；

【摘要】 <正>炭黑是橡胶工业中最重要的增强剂。但由于炭黑不易在橡胶基体中均匀分散,必须对填料进行改性,通常的改性主要是表面改性,本文利用固相原位接枝方法,使天然橡胶在高温高剪切作用下断裂形成大分子自由基,再接枝到炭黑表面,由此可以改善炭黑与橡胶基体之间的相互作用力,提高炭黑在橡胶基体中的分散性,从而提高其力学性能。将天然橡胶在一定温度、一定转速的条件下,在机械剪切力场的作用下,降解一定时间后,加入相同质量的炭黑(CB)混炼得到接枝炭黑(GCB)。更多还原

【Abstract】 Natural rubber (NR) was decomposed under high temperature and powerful shear force in Haake Rheomix and grafted onto the surface of carbon black (CB). Compared with original CB, grafted CB particle size diminished very much due to the aggregates of CB was broken. Grafted CB was dispersed into NR matrix very well and uniformly because the grafting reaction improved the interaction between CB and NR which was approved by the amount of bound rubber.更多还原