悬浮溶胀法合成接枝聚丙烯

用BPO作引发剂以水相悬浮胀法合成接枝聚丙烯，研究了反应条件、组分等因素对PP的接枝率（Gr)和接枝效率（Ge)的影响，发现溶胀剂、悬浮剂、引发剂、催化剂是该接枝物的主要影响因素。用此方法接枝的聚丙烯有工艺简单，接枝率高，聚丙烯降解程度小等优点，用它作PP／CaCO3、PP/PA6、PP／MBS体系的相容剂，测试结果表明，复合材料的力学性能有很大的提高。

Grafting PP by Swelling Suspension Copolymerization Process

Grafting polypropylene by the suspension process has been polymerized in water medium using BPO as initiator. The effects of the recipes and reaction conditions on grafting rate and grafting efficiency of PP have been investigated. The results show that the swelling time, initiator, catalyst and suspension agents are main affecting factovs effects the grafting process. The advantages of the grafting method are that the process is simple and the product has higher grafting rate and less decomposition. Using the grafting PP resin as a compatible agent of these composites of PP/CaCO 3, PP/PA6,PP/MBS, the mechanical properties of the blending materials have been significantly improved.