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요약정보
超支化聚酯的端基改性及其涂膜性能 / Modification of end groups of hyperbranched polyester and its film properties
Resource Type
Academic Journal
Authors
王勇
;
朱延安
;
瞿金清
;
WANG Yong
;
ZHU Yan'an
;
QU Jinqing
Source
化工学报 / CIESC Jorunal
. 64(6):2240-2246
Subject
超支化聚酯
己内酯
涂膜性能
黏度
Language
Chinese
ISSN
0438-1157
Online Access
Scopus
Find it @ DONGA
초록
以三羟甲基丙烷为核多元醇,二羟甲基丙酸为AB2型单体,对甲苯磺酸为催化剂准一步法合成了第二代超支化聚酯(HBP-0).HBP-0分别经己内酯和月桂酸改性得到改性超支化聚酯(HBPs).采用FT-IR、1 H NMR和GPC对HBP-0的结构和相对分子质量进行表征,发现超支化聚酯的支化度为0.43,相对分子量与理论相对分子量比较接近,相对分子质量分布系数只有1.72.以甲苯二异氰酸酯加成物为交联剂,考察了改性超支化聚酯交联涂膜性能,结果表明,3种改性超支化聚酯的涂膜性能在光泽度、耐冲击性、附着力和柔韧性方面表现十分优异.其中HBP-3同时用己内酯和月桂酸改性具有最佳性能,黏度最低为7500 mPa·s,涂膜表干40 min,且硬度达到F.而单独用己内酯或月桂酸改性的HBP-1和HBP-2的相应数据分别为7×105 mPa·s、20 min和HB及17500 mPa·s、90 min和2B.
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