挤出次数及相容剂对ABS/PMMA合金性能的影响  

Effect of the Number of Extrusion and Compatibilizing Agent on the Mechanical Properties of ABS/PMMA

作　　者：张爱敏[1] 赵国群[1] 高军[1] 陈国文[1] 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室,山东大学模具工程研究中心,山东济南250061

出　　处：《高分子材料科学与工程》2010年第6期93-95,共3页Polymer Materials Science & Engineering

基　　金：“十一五”国家科技支撑计划项目(2006BAF02A05)

摘　　要：用熔融共混的方法制备了丙烯腈-苯乙烯-丁二烯共聚物(ABS)/聚甲基丙烯酸甲酯(PMMA)合金,研究了挤出次数和相容剂对合金性能的影响,采用差示扫描量热法(DSC)测定了ABS/PMMA合金的玻璃化转变温度,用场发射扫描电镜(SEM)观察了材料冲击断口的表面形貌。结果表明,挤出次数对拉伸强度没有明显影响,对冲击强度有小幅度影响;苯乙烯-马来酸酐共聚物(SMA)作为相容剂增加了合金的拉伸强度,降低了合金的韧性。SEM观察表明,PMMA使材料由韧性断裂向脆性断裂转变,SMA对于ABS/PMMA合金的相容性没有明显的改善作用。Acrylonitrile-butadiene-styrene （ABS）/polymethyl methacrylate （PMMA） blends were prepared in a corotating twin-screw extruder.Effect of number of extrusion and compatibilizing agent on mechanical properties of ABS/PMMA blends was studied.The glass transition temperature was measured by differential scanning calorimetry （DSC） and the fracture surface observed by scanning electron microscopy （SEM）.The results show that number of extrusion has no effect on tensile strength and a little effect on impact strength.SMA as a modifier increases the tensile strength and decreases the impact strength of blends.It is found that the ductile rupture of blends gradually changes into brittle rupture as PMMA is added.The compatibility of ABS/PMMA is not improved obviously by styrene-maleic anhydride copolymer （SMA）.

关 键 词：ABS/PMMA合金 挤出次数 相容性 力学性能 

分 类 号：TQ320.663[化学工程—合成树脂塑料工业]