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具有增强水热电阻的环氧复合材料的低MXene负载

Mengke Jing¹, Shujie Zhang¹, Sichang Zhang²

¹School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.

|May 14, 2025

概括

添加少量的二维分层碳化 (Ti₃C₂T_x或MXene) 显著提高了环氧树脂的热水阻力. 这些MXene/环氧纳米复合材料在老化后保持其性能,并且完全可回收.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
纳米复合材料的使用方法

背景情况:

环氧树脂 (EP) 广泛使用,但在热水条件下容易降解.
称为MXene的二维分层碳化 (Ti₃C₂T_x),提供了用于材料增强的独特特性.
了解MXene对环氧树脂的热水衰老的影响对于先进的应用至关重要.

研究的目的:

为了研究MXene/环氧纳米复合材料的热水衰老行为.
评估MXene添加对环氧树脂热和机械性能的影响.
为了评估MXene增强环氧系统中水热老化后的特性恢复.

主要方法:

使用多层 (m-MXene) 和少层 (f-MXene) 的MXene/环氧纳米复合材料在0.1%重量负载下进行制备.
关于MXene的特性,吸水能力,玻璃过渡温度 (T_g) 和抗拉强度.
在各种条件下评估固化行为和水热衰老效应.

主要成果:

添加MXene稍微增加了固化温度,但影响激活能量最小.
MXene降低了初始交联密度和T_g,但显著提高了热水阻力.
与纯EP相比,MXene/环氧复合材料在老化后显示出优异的T_g保留 (8.9-9.5°C下降) 和拉伸强度保留 (83-85.3%) 与纯EP相比 (46.9°CT_g下降,69.1%的强度保留).

结论:

低负荷 (0.1 wt.%) 的MXene有效地提高了环氧树脂的热水稳定性.
添加MXene可以改善水热老化后的耐用性和机械性质的恢复.
MXene/环氧纳米复合材料对于需要抵抗恶劣环境的应用具有前景.

关键词:

这就是MXene MXene.环氧树脂是一种环氧树脂.通过水热老化进行水热老化.纳米复合材料的使用方法

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