摘要
以马来酸酐(MAH)为单体,过硫酸铵、无水亚硫酸钠为共引发剂,采用溶液接枝的方法制备了芦苇接枝马来酸酐产物(Cell-g-MAH),并对其结构进行了红外表征;结果表明,在1 722cm-1处出现明显的羰基吸收峰,则接枝产物为目标产物。制备了PP/LLDPE/未改性芦苇(PLC)、PP/LLDPE/Cell-gMAH(PLM)复合材料;探讨了芦苇纤维用量及Cell-g-MAH对复合材料力学性能、加工性能、吸水性及微观结构的影响;结果表明,芦苇纤维用量30份为宜;与PLC相比,PLM的弯曲强度和冲击强度分别提高了16.37%、10.26%,熔体流动速率提高了15.87%,吸水率降低了49.17%。接枝马来酸酐的芦苇纤维在PP/LLDPE基体树脂中分散较好,对复合材料的加工性能和机械性能都有改善。
Cell-g-MAH was prepared by solution-grafting method using maleic anhydride （MAH） as a monomer, ammonium persulfate and anhydrous sodium sulfite as the initiators. Two kinds of composites PP/LLDPE/unmodified reed （PLC） and PP/LLDPE/Cell-g-MAH （PLM） were obtained, in which there was a significant carbonyl absorption peak at 1 722 cm^-1. The influence of reed fiber dosage and Cell-g-MAH on composites of mechanical properties, processing performance, water absorption performance and mierostructure were studied. The results showed that the advisable reed dosage was 30 phr. The bending strength and impact strength of PLM composite was increased by 16.37% and 10.26% respectively, melt flow rate was increased by 15.87%, bibulous rate was reduced by 49.17% when compared with PLC. It indicated that the grafted of maleic anhydride reed fiber in the PP/LLDPE resin dispersion was better. The processing properties and mechanical properties of the composites were improved.
出处
《大连工业大学学报》
CAS
北大核心
2016年第1期48-51,共4页
Journal of Dalian Polytechnic University
基金
大连市科技计划项目(2013[378]号)
关键词
马来酸酐
芦苇
改性
复合材料
maleic anhydride
reeds
modification
composites
