Reducing the water absorption in epoxy coatings by silane monomer incorporation
Reducing the water absorption in epoxy coatings by silane monomer incorporation
复制标题
通过掺入硅烷单体降低环氧涂料的吸水率
DOI：
10.1016/j.corsci.2006.02.005
复制
发表时间：
2006-11-01
影响因子：
8.3
通讯作者：
Cao, Chu-Nan
中科院分区：
文献类型：
--
作者：
Ji, Wei-Gang;Hu, Ji-Ming;Cao, Chu-Nan
在本次交流中，3-缩水甘油氧基丙基三甲氧基硅烷（GPTMS）被用作添加剂来抑制环氧涂料的吸水性。采用电化学阻抗谱（EIS）测量的涂层电容来计算水溶液中环氧涂层的吸水量。发现环氧涂料的吸水率在掺入硅烷组分后急剧下降。有趣的是，硅烷混合环氧涂料的玻璃化转变温度（T-g）在浸泡过程中不断增加，与之前文献报道的不含硅烷的聚合物基材的玻璃化转变温度（T-g）形成鲜明对比，在水渗透后观察到玻璃化转变温度显着降低。 (c) 2006 Elsevier Ltd. 保留所有权利。
In this communication, 3-glycidoxypropyltrimethoxy silane (GPTMS) was used as an additive to inhibit the water absorption of epoxy coatings. Coating capacitance, which was measured by electrochemical impedance spectroscopy (EIS), was employed to calculate the amount of water uptake in epoxy coatings in aqueous solution. The water absorption in epoxy coatings was found to decrease drastically after incorporated with silane component. It was interestingly found that the glass-transition temperature (T-g) of silane-mixed epoxy coatings continuously increased during the immersion, extremely contrast with that of silane-free polymeric substrates, which was observed to decrease significantly after water permeation as reported in previous literatures. (c) 2006 Elsevier Ltd. All rights reserved.