ACR核层中交联单体对PC/ACR共混物性能的影响  

Effect of the Cross-linking Monomer in Core of ACR on the Property of PC/ACR Blends

作　　者：陆波[1] 张微[1] 李鹏[1] 

机构地区：[1]沈阳化工大学材料科学与工程学院,辽宁沈阳110142

出　　处：《塑料工业》2013年第6期64-66,70,共4页China Plastics Industry

摘　　要：用丙烯酸丁酯、交联单体和甲基丙烯酸甲酯经乳液聚合和后处理制备了聚丙烯酸丁酯(PBA)/聚甲基丙烯酸甲酯(PMMA)核壳结构的丙烯酸酯树脂(ACR),然后将ACR与聚碳酸酯(PC)共混进行增韧改性。研究了ACR核层中交联单体对PC/ACR共混物力学性能的影响,并用SEM对共混物冲击断面形貌进行了研究。结果表明:随着ACR核层中交联单体含量的增加,PC/ACR共混物的缺口冲击强度呈现先增加后降低的趋势,拉伸强度和弯曲强度变化很小。当交联单体B含量为10%时,PC/ACR共混物的冲击强度达到最大为50.4 kJ/m2,约是纯PC冲击强度的5倍。PBA/PMMA ACR with core-shell structure was prepared with butyl acrylate, cross linking monomer and methyl methacrylate by emulsion polymerization. Then PC/ACR blends were toughened with ACR. The effects of cross linking monomers of ACR on the mechanical property of PC/ACR blends and the impact fracture morphology of the blends were studied by SEM. The result indicated that notched impact strength of PC/ACR blends first enhanced then decreased and the tensile strength and flexural strength of PC/ACR blends were less decreased with the increase of cross linking monomer content of ACR. The notched impact strength of PC/ACR blends was the maximum at 50.4 kJ/m2 when the content of cross linking monomer B was 10%, which was about 5 times than that of neat polycarbonate.

关 键 词：核 壳结构丙烯酸酯共聚物 聚碳酸酯 增韧 冲击强度 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]