丙烯酸原位界面改性Sb_2O_3/PP母粒的结晶与熔融行为  

Crystallization and Melting of Sb_2O_3/PP Masterbatch Modified by In-situ Couplied by Acrylic Acid

作　　者：麦堪成[1] 李日强[1] 

机构地区：[1]中山大学化学与化学工程学院

出　　处：《中山大学学报（自然科学版）》2003年第4期38-42,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：广东省自然科学基金团队研究 (2 0 0 0 30 38);重点资助项目 (0 2 1731) ;广东省科技攻关资助项目 (A10 70 2 0 7) ;广东省高校千百十工程人才培养资助基金 (Q0 2 0 16 ) ;广州市科技攻关资助项目 (Z3_D2 0 11)

摘　　要：用双螺杆挤出机制备了Sb2 O3 PP、十溴联苯醚 (DBDPO) PP母料和丙烯酸 (AA)改性Sb2 O3 PP母料 ,用DSC研究了Sb2 O3、DBDPO对PP结晶与熔融行为的影响以及AA对Sb2 O3 PP母料结晶与熔融行为的影响。Sb2 O3对PP产生的异相成核作用比DBDPO的明显 ,使PP结晶和熔融温度提高更大 ,但DBDPO促进PP形成 β晶。AA加入及其用量改变对Sb2 O3 PP母粒中PP结晶与熔融行为影响不大 ,在DCP存在下AA改性母粒中PP结晶与熔融温度比无DCP的低。The Sb_2O_3/PP masterbatch,DBDPO/PP masterbatch and Sb_2O_3/PP masterbatch modified by acrylic acid (AA) with or without DCP were prepared by using a twin_screw extruder.The effect of Sb_2O_3 and DBDPO on crystallization and melting behavior of PP,and effect of AA on crystallization and melting behavior of Sb_2O_3/PP masterbatch were evaluated by DSC.It is observed that the crystallization and melting temperatures of PP filled by Sb_2O_3 is higher than that by DBDPO due to the higher heterogeneous nucleation of Sb_2O_3.Addition of AA and the increase in the content of AA have no influence on the crystallization and melting temperatures of PP in the Sb_2O_3/PP masterbatch.However,the crystallization and melting temperatures of Sb_2O_3/PP masterbatch modified by AA with DCP is lower than that without DCP.

关 键 词：聚丙烯 三氧化二锑 结晶与熔融行为 丙烯酸 

分 类 号：O631.21[理学—高分子化学]