Thermoreversible and remendable glass–polymer interface for fiber-reinforced composites
Thermoreversible and remendable glass–polymer interface for fiber-reinforced composites
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DOI：
10.1016/j.compscitech.2010.11.022
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发表时间：
2011-03
影响因子：
9.1
通讯作者：
Amy M. Peterson;R. E. Jensen;G. Palmese
中科院分区：
文献类型：
--
作者：
Amy M. Peterson;R. E. Jensen;G. Palmese
在纤维增强复合材料中，增强材料与聚合物基体的粘附是载荷从聚合物基体转移到增强材料的关键。利用呋喃功能化环氧胺热固性基体与马来酰亚胺功能化玻璃纤维之间的可逆Diels-Alder反应，在聚合物-玻璃界面上赋予可修复性，为玻璃纤维增强复合材料的潜在应用提供了可能。在室温下，Diels-Alder加合物自发形成，在90℃以上，加合物分解，重新形成原来的呋喃和马来酰亚胺部分。采用单纤维微滴拉出试验对界面愈合进行了研究。在该界面完全破坏后，观察到明显的愈合，一些样品恢复了超过100%的初始特性。治疗效率不受位移距离的影响，整体平均治疗效率为41%。成功地实现了多达五个愈合周期。在呋喃功能化网络中，由马来酰亚胺大小的玻璃组成的玻璃纤维增强复合材料有望延长疲劳寿命。
Adhesion of the reinforcement to the polymer matrix is essential for load transfer from the polymer matrix to the reinforcement material in fiber-reinforced composites. The reversible Diels–Alder reaction between a furan-functionalized epoxy-amine thermosetting matrix with a maleimide-functionalized glass fiber was used to impart remendability at the polymer–glass interface for potential application in glass fiber-reinforced composites. At room temperature the Diels–Alder adduct is formed spontaneously and above 90°C the adduct breaks apart to reform the original furan and maleimide moieties. Healing of the interface was investigated with single fiber microdroplet pull-out testing. Following complete failure of this interface, significant healing was observed, with some specimens recovering over 100% of the initial properties. Healing efficiency was not affected by the distance of displacement, with an overall average of 41% healing efficiency. Up to five healing cycles were successfully achieved. It is expected that a glass fiber-reinforced composite of maleimide-sized glass within a furan-functionalized network will demonstrate extension of fatigue life.