摘要
采用Al-Ni陈化,稀B和醇以及稀B和H2O单加的方式合成顺丁橡胶。通过H2O/油在超声波中的振荡,使H2O均匀地分散在汽油中并充分与B反应;通过H2O/B在超声波中的振荡,改善B在汽油中的分散。对ROH/B和H2O/B体系,研究了催化剂配比、聚合温度、反应时间对单体转化率、相对分子质量及微观结构的影响,适当的Al/B和H2O/B比可以提高聚合体系的反应活性。
The cis-polybutadiene was synthesized by aging Al-Ni, diluting B and adding ROH or H2O independently. In order to make H2O spread around oil, the H2O/oil system was surged by ultrasonic. In order to make H2O/B spread around oil, the H2O/B system was surged by ultrasonic. For the ROH/B system and the H2O/B system, the effects of the catalyst component ratio, polymerization temperature,reaction time and ratio of boron to ROH and H2O on the monomer conversion, relative molecular weight and the microstructure of the polymer, and find when the HEO/B and Al/B is fit, the catalytic activity is improved.
出处
《胶体与聚合物》
2008年第3期4-6,共3页
Chinese Journal of Colloid & Polymer
关键词
镍系催化剂
第四组分
超声波
转化率
Nickel catalyst
Forth component
Ultrasonic
Coversion
