聚丙烯熔融接枝马来酸酐和苯乙烯的研究-高校化学工程学报.PDF

20 1 No.1 Vol.20 2006 2 Journal of Chemical Engineering of Chinese Universities Feb. 2006 1003-9015(2006)01-0109-06 , , , ( , 510640) (MAH))(St)(PP) MAH St(DCP) ⎯⎯ (AB)MAH FTIR AB PP AB PP MAH T = 190 T =190 t = 2.5 min r = 100r⋅min− 1m(PP):m(MAH): 1 2 m(St):m(DCP):m(AB)=100:8:3:0.5:0.5 AB TQ325.14 TQ316.343 A Melt-grafting of Maleic Anhydride and Styrene onto Polypropylene ZHANG Xin-ya, FU He-qing, HUANG Hong, CHEN Huan-qin (Research Institute of Chemical Engineering, South China University of Technology, Guangzhou 510640, China) Abstract: Polypropylene (PP) modified by means of melt grafting with maleic anhydride (MAH) and styrene (St) was studied by a double-screw extruder under the conditions of adding the assistant and without any assistant respectively. The conditions for melt-grafting MAH and St onto PP were optimized by orthogonal experiments. The influences of amounts of MAH, St, DCP and a kind of assistant sulfo-acid ester (AB) on the grafting ratio were investigated and other influential factors were analyzed. Structure of the products was characterized by FTIR. The degradation mechanism of PP restrained by the assistant AB was analyzed. The experimental results show that the assistant AB could reduce the degradation of PP and improve the grafting ratio of MAH. The optimized process conditions obtained by orthogonal experiments are as following: extrusion