1 艺技术
第46卷第4期 2016年4月
涂料工业
PAINT&COATINGSINDUSTRY
Vol.46No.4 Apr.2016
新型聚酰胺酰亚胺的合成及其涂膜性能的研究
段广宇，胡祖明，于俊荣，王彦，诸静
（东华大学纤维材料改性国家重点实验室，上海201620）
摘要：传统二元聚酰胺酰亚胺的软化点和热变形温度较低，耐热性欠佳。本研究以N-甲基吡略烷酮为溶剂,以偏苯三酸酐（TMA）、均苯四甲酸二酐（PMDA）、4,4'-二苯基甲烷二异氰酸酯（MDI）为单体，进行三元共聚反应，制得一种新型的聚酰胺酰亚胺（PAI）。利用傅里叶转换红外光谱（FT-IR)对合成的PAI结构进行了表征,利用热重分析（TGA）、差示扫描量热（DSC）、紫外-可见光谱、宽频介电阻抗谱等对PAI涂层性能进行了测试。结果表明，与传统二元其聚所得的PAI相比，三元共聚型 PAI的硬度、热稳定性显著提高，此外，还具有优良的光学性能和电学性能，拓宽了PAI的应用范围。
关键词：聚酰胺酰亚胺：三元共聚：结构和性能：涂层：热稳定性
中图分类号：TQ630.4
文献标识码：A
文章编号：0253-4312（2016)04-0034-06
Synthesis and Property of Coatings Based on NovelPoly(amide-imide
DuanGuangyu,HuZuming,YuJunrong,WangYan,ZhuJing
(State Key Laboratory of Fiber Material Modification,Donghua University,Shanghai 201620,China)
Abstract:The traditional poly(amide-imide) (PAI) has a low softening point and heat distortiontemperature.Inthisarticle，anovelpoly(amide-imide)（PAI)hasbeenprepared by copolymerization of trimellitic anhydride（TMA),pyromellitic dianhydride（PMDA)and 4,4'-diphenyl methane diisocyanate (MDI) as monomers at the presence of N-methylpyrroli-done (NMP). The structure of the prepared PAI is characterized by Fourier transform infrared spectroscopy (FT-IR).The properties of the cured film derived from the prepared PAI are in-vestigated by thermal gravimetric analyzer (TGA),differential scanning calorimetry (DSC), UV-visible spectrometer and broadband dielectric impedance spectroscopy, etc. The results showthatthehardness andthermal stabilityof thenovelPAI isbetterthantheconventional PAl, meanwhile, the optical and electrical properties are also outstanding, which can enlarge theapplications ofthenovelPAl.
Key Words:poly(amide-imide); terpolymer; structure and performance; coating; prop-ertyofthermal stability
聚酰胺酰亚胺（PAI）分子链上既有酰胺键又有酰亚胺键，具有优异的耐高温性、耐辐射性、阻燃性和耐化学药品性，是一种性能优异的高性能聚合物，在
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防护、微电子、涂料等领域有广泛的应用1-4]。合成 PAI的方法主要有二异氰酸酯法和酰氧法[S)。目前，国内大多采用双单体聚合得到聚酰胺酰亚胺，很少涉