Migration of cross-linking agents to the surface during ageing of a structural epoxy adhesive
Migration of cross-linking agents to the surface during ageing of a structural epoxy adhesive
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DOI：
10.1016/s0143-7496(03)00028-9
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发表时间：
2003-08-01
影响因子：
3.4
通讯作者：
Shanahan, MER
中科院分区：
文献类型：
--
作者：
Buch, X;Shanahan, MER
在热降解的改性结构的环氧树脂胶粘剂，基于TGDDM和固化与DDA和DDS，有氮和含硫的分子从本体向表面迁移，如通过X-射线分析所示。在本文中，它表明，这些分子的热行为是类似的交联剂本身。表面层仅由1/1摩尔比的DDA和DDS组成的假设与观察到的浓度一致。结果强烈表明，迁移在表面的分子确实是交联剂。(C)2003爱思唯尔科技有限公司版权所有。
During the thermal degradation of a modified structural epoxy adhesive, based on TGDDM and cured with DDA and DDS, there is migration of nitrogen- and sulphur-containing molecules from the bulk towards the surface, as demonstrated by X-ray analysis. In this paper, it is shown that the thermal behaviour of these molecules is similar to that of the cross-linking agents themselves. The hypothesis of a surface layer consisting of DDA and DDS only in a 1/1 molar ratio is consistent with the observed concentrations. Results strongly suggest that the molecules which migrate at the surface are indeed the cross-linking agents. (C) 2003 Elsevier Science Ltd. All rights reserved.