Functionalization of epoxy resin and the performance of the resultant magnesium-rich primer

被引：6
|
作者：
Ge, Chengyue [2 ,4 ]
Guo, Yudi [2 ,3 ]
Ma, Xiumin [1 ,2 ,3 ]
Hou, Baorong [2 ,4 ]
机构：
[1] 7 Nanhai Rd, Qingdao 266071, Peoples R China
[2] Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
[3] Natl Marine Corros Protect Engn Res Ctr, Qingdao, Peoples R China
[4] IOCAS, Key Lab Marine Environm Corros & Biofouling, Qingdao, Peoples R China
来源：
E-POLYMERS | 2017年 / 17卷 / 02期
关键词：
coating; epoxy resin; functionalization of polymer; grafting modification; organic silicone; COPOLYMERS;
D O I：
10.1515/epoly-2016-0166
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A magnesium (Mg)-rich primer can provide cathodic protection for an aluminum (Al) alloy due to the lower potential of Mg. However, the Mg-rich primer prepared by simple blends shows poor flexibility and impact resistance. In this paper, bisphenol-A type epoxy resin E-20 was graft modified by hydroxyl silicon oil (HS), amino silane coupling agent and diphenyl-methanediisocyanate (MDI) by three different ways. Then Mg-rich primer was prepared by direct blends of modified resins. Results indicate that the introduction of siloxane groups could improve the comprehensive performance of the coating especially the flexibility and impact resistance. Furthermore, Mg-rich primer prepared from MDI modified epoxy resin even possesses excellent salt spray and aging resistance.
引用
收藏
页码：137 / 148
页数：12
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