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요약정보
高固体含量新型羟基聚酯的合成与性能 / Synthesis and Properties of Novel High Solid Hydroxyl Polyester
Resource Type
Academic Journal
Authors
敖伟
;
刘道峰
;
段晓俊
;
彭刚阳
;
朱延安
;
瞿金清
;
Ao Wei
;
Liu Daofeng
;
Duan Xiaojun
;
Peng Gangyang
;
Zhu Yanan
;
Qu Jinqing
Source
涂料工业 / Paint & Coatings Industry
. 51(7):42-53
Subject
羟基聚酯
高固含量
聚醚多元醇
黏度
涂膜性能
Language
Chinese
ISSN
0253-4312
Online Access
Find it @ DONGA
초록
采用小分子多元醇与苯酐反应生成含端羧基的半酯,再与环氧化合物开环反应制得系列羟基聚酯,该反应在较低温度(130℃以下)下进行,且不需要二甲苯作为带水剂,具有节能环保的优点.采用聚醚多元醇改性进一步降低聚酯的黏度,探究了多元醇种类、多元醇与酸酐物质的量比、环氧单体种类、聚醚多元醇的种类和添加量对聚酯性能的影响,并研究了聚酯的稀释曲线.利用红外光谱仪、核磁共振氢谱仪、热重分析仪和凝胶渗透色谱仪对树脂进行表征,测试了固化涂膜的机械性能、耐溶剂性和热稳定性.得到的聚酯黏度低至860mPa·s(质量固含量80%),相对分子质量为800~2 000,分布系数约为1.12.用其配制的双组分聚氨酯涂料具有优异的理化性能,施工VOC含量低至350 g/L,且涂膜具有较好的热稳定性.
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