Impact resistance enhancement by adding epoxy ended hyperbranched polyester to DGEBA photocured thermosets

被引：57
作者：
Foix, D. [1 ,2 ]
Serra, A. [2 ]
Amparore, L. [1 ]
Sangermano, M. [1 ]
机构：
[1] Politecn Torino, Unita Locale INSTM, Dipartimento Sci Appl & Tecnol, I-10129 Turin, Italy
[2] Univ Rovira & Virgili, Dept Analyt & Organ Chem, Tarragona 43007, Spain
来源：
POLYMER | 2012年 / 53卷 / 15期
关键词：
Hyperbranched polymers; Epoxy resin; UV-curing; CATIONIC PHOTOPOLYMERIZATION; THERMOMECHANICAL PROPERTIES; POLYMERS; BLENDS; RESIN; COPOLYMERS; ADDITIVES; BEHAVIOR; SYSTEMS;
D O I：
10.1016/j.polymer.2012.05.046
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Epoxy-functionalized HOP was synthesized and used as toughening additive in epoxy based UV-curable formulations. The addition of the HBP-epox induced an increase of epoxy group conversion, probably through both an activated monomer mechanism, involving the residual hydroxyl groups, and a copolymerization reaction, involving the epoxy functionalities present on the surface of the HBP. Phase separation was reached during UV-Curing, which assured to maintain the good thermomechanical properties of the cured epoxy matrix improving the impact resistance. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3084 / 3088
页数：5
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