挤出温度对透明改性无规共聚聚丙烯性能的影响  

Effects of Extrusion Temperature on Properties of Transparent Modified Polypropylene Random Copolymer

作　　者：孙彩迪 罗发海[1,2] 罗发亮[1] 薛屏[1] 闫东广[3] 

机构地区：[1]宁夏大学能源化工重点实验室,宁夏银川750021 [2]六盘山高级中学,宁夏银川750004 [3]江苏科技大学材料科学与工程学院,江苏镇江212003

出　　处：《现代塑料加工应用》2015年第5期1-4,共4页Modern Plastics Processing and Applications

基　　金：宁夏科技支撑计划和国家自然科学基金(No.21264012)资助项目

摘　　要：通过差示扫描量热仪(DSC)、偏光显微镜(PLM)等研究了挤出温度对添加NX8000K成核剂无规共聚聚丙烯(PPR)的结晶行为、晶体形貌、光学性能及热力学性能的影响。结果表明:PPR添加成核剂NX8000K后,随着挤出温度的升高,PPR的结晶峰温度升高,晶核数量增多;试样的拉伸强度和断裂伸长率在高温条件下表现得更加优异,而冲击强度和维卡软化温度则随着挤出温度的升高逐渐下降;试样的光学性能得到提升,最终优化出了适宜的挤出温度。The effects of extrusion temperatures on crystallization behavior, crystal morphology,transparency,thermodynamic properties of random copolymer of polypropyl-ene （PPR） with nucleation agent NX8000K were investigated by Differential Scanning Calorimetry （DSC）,Polarizing Microscope （PLM）,etc.The results show that as the ex-trusion temperature increases,the crystallization peak temperature of PPR with addition of nucleating agent NX8000K will increase,and the quantities of crystal nucleus increase obviously.The tensile strength and elongation at break are more excellent at high tem-perature condition,but the notched impact strength and vicat softening temperature de-crease.The optical properties of the samples are improved.Finally,the suitable extru-sion temperature is obtained.

关 键 词：无规共聚聚丙烯 成核剂 挤出温度性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]