PET的注射成型工艺对制品性能的影响  

Effect of Injection Molding Process on Properties of PET

作　　者：黄彦红[1] 杨艳秋[1] 马晨[1] 唐梦[1] 赵永仙[1] 高建国 Huang Yanhong;Yang Yanqiu;Ma Chen;Tang Meng;Zhao Yongxian;Gao Jianguo(Key Laboratory of Rubber-Plastics, Ministry of Education Qingdao University of Scienceand Technology, Qingdao 266042, China;Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, China;Qingdao Exit & Entry Inspection and Quarantine Bureau, Qingdao 266001, China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室,山东青岛266042 [2]青岛出入境检验检疫局,山东青岛266001

出　　处：《工程塑料应用》2017年第3期64-68,共5页Engineering Plastics Application

基　　金：国家自然科学基金项目(51373084);科技部质检行业公益项目(201410083)

摘　　要：通过注射成型试验探索聚对苯二甲酸乙二酯(PET)的成型工艺条件,并结合紫外可见光谱和力学性能测试方法,分析注塑成型工艺对PET性能的影响。研究发现:PET适宜的注射成型温度为280℃,模具温度为70℃,注塑压力为50 MPa,冷却时间为20 s。此条件下制得的PET制品不易结晶、透明无缺陷、无翘曲和凹痕、综合力学性能较好,拉伸强度、弯曲强度及弯曲弹性模量较小,断裂伸长率和缺口冲击强度较大。The effect of injection molding process on the properties of poly(ethylene terephthalate)(PET)was analyzed bymeans of injection molding experiment,combined with UV-visible spectrometer and mechanical property tester.It is indicated thatthe suitable injection temperature of PET is280℃,the suitable mold temperature is70℃,the suitable injection pressure is50MPa,and the suitable cooling time is20s.Under these conditions,PET products are not easy to crystallize,with high transparency andno defects,no warping and dents,the mechanical properties are better,tensile strength,flexural strength and flexural modulus aresmaller,elongation at break and notched impact strength are larger.

关 键 词：聚对苯二甲酸乙二酯 注射成型 力学性能 透明性 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]