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坚固的自我愈合材料通过在现场生长的热带石化伊米达酸框架-8纳米晶体在聚合物中

Weiye Xiao¹, Yan Song¹, Chao Li¹

¹State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.

Macromolecular rapid communications

|July 23, 2024

概括

制造强大而坚固的自我愈合复合材料是一项挑战. 这项研究引入了一种新的方法,在聚合物网络中使用热带性伊米达框架-8 (ZIF-8) 纳米晶体,显著增强机械性能和自我愈合能力.

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
纳米技术纳米技术

背景情况:

开发具有卓越机械强度和性的自我愈合材料仍然是材料科学的重大挑战.
现有的自我修复系统往往会损害机械完整性,从而损害维修能力.

研究的目的:

为了制造一个强大而坚固的自我愈合复合材料.
在含有伊米达的聚合物网络中研究化伊米达框架-8 (ZIF-8) 纳米晶体的现场生长.
提高聚合物复合材料的机械性能和自我修复效率.

主要方法:

在含有伊米达的聚合物网络中,ZIF-8纳米晶体在现场生长.
通过调整盐与2-methylimidazole的固态度比,调整机械性能.
使用X射线衍射 (XRD),传输电子显微镜 (TEM),原子力显微镜 (AFM) 和减弱总反射里埃变换红外 (ATR-FTIR) 光谱学进行了表征.

主要成果:

与纯离子交联系统相比,成功制造了一种具有增强拉伸强度 (43%) 和性 (100%) 的自愈复合材料.
在温和条件下 (60°C48小时) 达到高达91%的自我愈合效率.
证实了ZIF-8纳米晶体的存在和集成以及聚合物矩阵内的-意米达相互作用.

结论:

通过现场生长将ZIF-8等金属有机框架 (MOF) 纳入设计中是一个有前途的战略,用于设计先进的自我修复材料.
动态的-伊米达相互作用在温和条件下促进有效的自我愈合.
这种方法为克服聚合物复合材料的机械性能和自我修复能力之间的权衡提供了一条途径.

关键词:

在现场增长增长.这是一种自我愈合的疗法.泽奥利特性伊米达的框架-8 胺的相互作用胺的相互作用

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