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由二氧化改性石墨烯氧化物制成的环氧树脂/石墨烯氧化物复合材料的结构和性能

Jin An¹, Yue Zhang², Xiaojun Zhang²

¹State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.

|April 22, 2024

概括

这项研究开发了用于环氧树脂复合材料的二氧化移植石墨烯氧化物 (SiO2@GO) 混合体. 这种EP/GO-B混合物显著增强了环氧氧化物.

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:

石墨烯氧化物 (GO) 是复合材料应用的一个有前途的材料.
提高环氧树脂 (EP) 的性能对于先进的材料开发至关重要.
对GO的表面修改可以提高其在聚合物矩阵中的兼容性和性能.

研究的目的:

合成和描述两种类型的氧化-石墨烯 (SiO2@GO) 混合物.
研究这些杂交物对环氧树脂复合材料的固化机制和性能的影响.
为了优化SiO2@GO的结构,以获得卓越的复合材料性能.

主要方法:

使用静电相互作用和化学接种来制造SiO2@GO混合体 (GO-A和GO-B).
差异扫描热度计和现场红外光谱谱学被用来研究固化机制.
在环氧树脂/GO复合材料上进行了拉伸试验,硬度试验,动态机械分析和介电测量.

主要成果:

成功合成了SiO2@GO混合物,GO-B显示了更均的分布.
带有GO-B的环氧树脂复合材料显著提高了拉伸强度 (79MPa,+43%) 和硬度.
EP/GO-B 显示了增强的储能模量 (1900 MPa),介电性质和断裂电压,具有较低的介电损失.

结论:

在石墨烯氧化物上的均分布是提高环氧树脂性能的关键.
SiO2@GO混合物,特别是GO-B,是提高环氧树脂机械和介电性能的有效填充剂.
开发的EP/GO-B复合材料显示出需要优异机械强度和电绝缘的应用的潜力.

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