PPPPgGMA剑麻复合材料的制备及其力学性能韩海山.pdf

塑 料 2009 38 4 ) ) ) PP / PP-g-GMA / * PP / PP-g-GMA / , , , (华东理工大学, 化学工程联合国家重点实验室, 上海 200237) : 采用熔融接枝法制备接枝率为 21 32 % 的 基丙烯酸缩水甘油酯 ( GMA )接枝聚丙烯 ( PP) 增容剂, 并研究 PP-g-GMA ( GPP)的用量和 KH 550 浓度对剑麻增强聚丙烯复合材料力学性能的影响结果表明: 在 GPP 添加量10 % 和 KH 550 浓度 2 % 时, 复合材料的冲击性能最好, 同时弯曲和拉伸性能基本没有下降; 在 一定程度上, 纤维表面与基 体之间形成的分子链越长, 对提高复合材料的冲击性能越有利 : 剑麻; 聚丙烯; 基丙烯酸缩水甘油酯接枝聚丙烯; KH 550; 冲击性能 : TQ 325. 12 : A : 1001- 9456( 2009) 04- 00 10- 03 Preparation and M echan ical Properties of PP / PP- g-GM A / S isal Fiber Com posite HAN H a-i han, SUN Zhan-y ing, SHEN Chun-yin, DA I Gan-ce ( State Key L aboratory of Chem ical Eng ineering, Ea t Ch ina Un iver ity of Sc ience and T echnology, Shanghai 200237, China) A bstract: PP-g-GMA ( GPP) com patilizerw ith 21 32 % grafting percent w a prepared by hot m elt grafting m ethod, and the effect of GPP content a w ell a KH550 concentration on the i al fiber/ polypropy lene com po ite wa tudied. T he re ult how ed that the mi pact trength of the compo ite prepared reached the be t perform ancew hen GPP contentw a 10% a w ell a KH550 concentration w a 2 % , at the am e tmi e, the flexural and ten ile propertie did not decline yet. T o ome degree, the longer the molecu le chain between the fiber urface and them atr ix w a , the better the mi pact propertie of the com po ite wou ld be mi proved. K ey w ord s: i al fiber; polypropy lene; PP-g-GMA; KH 550; mechan ical propertie SEBS-g-GMA [ 7- 9] , ,