摘要
在单螺杆挤出机上,利用路易斯酸实现了大分子间的Friedel-Crafts烷基化反应。考察了不同催化剂体系、催化剂用量及工艺条件对合金性能的影响。结果显示对于质量比为70.0∶30.0的高密度聚乙烯/聚苯乙烯合金体系,通过反应挤出,可以就地生成接枝共聚物;苯乙烯单体的加入有利于接枝物的形成;加入0.8份AlCl3、0.5份苯乙烯单体,控制合适的螺杆温度以及螺杆转速为60r/min时,合金的综合性能较好。
The Friedel-Crafts alkylation is realized between macromolecules with utilizing Lewis acid in a singlescrew extruder. The influences of different catalyst systems, catalyst dosage and process conditions on the properties of the alloy were examined. The results show that a kind of grafted copolymer can form in situ through reactive extrusion in the alloy system consisting of high density polyethylene and polystyrene at a mass ratio of 70.0 ： 30.0. The addition of styrene monomer favors the formation of the grafted copolymer. The polymer alloy exhibits good comprehensive performance when adding 0.8 phr of AlCl3 and 0.5 phr of styrene monomer under the condition of controlling properly the screw temperature and setting the screw rotation speed at 60 rpm.
出处
《合成树脂及塑料》
EI
CAS
北大核心
2005年第6期9-12,共4页
China Synthetic Resin and Plastics
基金
江苏省自然科学基金资助(BK2003028)。
