半芳香族耐高温聚酰胺(PA6T/10T/66)的制备及性能研究  

Preparation and Properties of Semi-aromatic High Temperature Resistant Polyamide(PA6T/10T/66)

作　　者：武嘉 陈岩 丁金娜 白利娜 孟迎迎 WU Jia;CHEN Yan;DING Jin-na;BAI Li-na;MENG Ying-ying(Shandong Dongchen Ruisen New Material Technology Co.,Ltd,Ji'nan 250014,China;College of Chemistry,Chemical Engineering and Materials Science,Shandong Normal University,Ji'nan 250014,China)

机构地区：[1]山东东辰瑞森新材料科技有限公司,山东济南250014 [2]山东师范大学化学化工与材料科学学院,山东济南250014

出　　处：《塑料科技》2023年第11期16-19,共4页Plastics Science and Technology

基　　金：山东省自然科学基金项目(ZR2020QB115)。

摘　　要：二元共聚半芳香聚酰胺(PA6T/66)是一种低成本、高刚性、工艺较成熟的高分子材料,但韧性较差,具有一定的吸水率。文章在PA6T/66树脂中引入低吸水率脂肪族长碳链耐高温聚对苯二甲酰癸二胺(PA10T)链段,利用熔融聚合与微负压增黏相结合的方式制备PA6T/10T/66树脂。结果表明:制备PA6T/10T/66树脂时,PA10T盐最优加入量为5%。红外光谱表征PA6T/10T/66(45/5/50)树脂已完全聚合。差示扫描量热仪(DSC)测试PA6T/10T/66(45/5/50)树脂熔点为300℃。树脂黏度为2.5时,其拉伸强度达到50 MPa,弯曲强度为54 MPa。当聚合压力为2.35 MPa,封端剂用量占总盐质量为1.5%时,树脂黏度符合使用要求。此工艺成本低、制备过程简单,得到的三元共聚树脂适合玻纤改性、配色、注塑等应用。Binary copolymerized semi-aromatic polyamide(PA6T/66) is a kind of polymer material with low cost,high rigidity and mature process,but it has poor toughness and certain water absorption.PA6T/10T/66 resin was prepared by melt polymerization and micro-negative pressure viscosity enhancement by introducing high temperature resistant polyterephthaloyl decanediamine(PA10T) segment of aliphatic long carbon chain with low water absorption into PA6T/66resin.The results show that the optimum amount of PA10T salt is 5% when preparing PA6T/10T/66 resin.Infrared spectra shows that PA6T/10T/66(45/5/50) resin is completely polymerized.The melting point of PA6T/10T/66(45/5/50) resin is 300 ℃ by differential scanning calorimeter(DSC).When the viscosity of the resin is 2.5,the tensile strength is 50 MPa and the flexural strength is 54 MPa.When the polymerization pressure is 2.35 MPa and the amount of end capping agent is 1.5% of the total salt mass,the viscosity of the resin meets the application requirements.This process has low cost and simple preparation process,and the obtained ternary copolymer resin is suitable for glass fiber modification,color matching,injection molding and other applications.

关 键 词：聚对苯二甲酰癸二胺 半芳香聚酰胺 封端剂 力学性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]