Preparation and properties of Silicone polymer-Graphene oxide reinforced glass fiber/epoxy resin composites
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摘要: 本研究将不同比例的硅聚物-氧化石墨烯(Silicon polymer-Graphene oxide,PSOL-GO)作为纳米填料来改性玻璃纤维/环氧树脂(Glass fiber/epoxy resin,GF/EP)复合材料,制备得到不同PSOL-GO含量的复合材料,利用观察形貌、测量接触角、红外分析、力学性能、动态力学分析(DMA)等测试方法分析了环氧复合材料的微观结构和增强机制。实验结果表明:PSOL-GO比例为1∶0.1时PSOL-GO@GF/EP复合材料力学性能最佳:改性后的GF/EP复合材料与纯GF/EP复合材料相比其层间剪切强度提升高了13.19%;其弯曲强度提升了33.12%;其拉伸强度提升了35.32%;其冲击强度提升了16.95%。添加比例为1∶0.1的PSOL-GO可使GF/EP复合材料的玻璃化转变温度(Tg)提高了7.1℃,使其耐热性有所提高。引入PSOL-GO纳米填料后的环氧树脂对玻璃纤维的润湿性更佳,同时可以填补纯的GF/EP复合材料自身空隙,增强复合材料的性能。Abstract: In this study, different proportions of Silicon polymer-Graphene oxide (PSOL-GO) were used as nano-fillers to modify Glass fiber/epoxy resin(GF/EP )composites, the composites with different PSOL-GO contents were prepared, The microstructure and strengthening mechanism of epoxy composites were analyzed by observing morphology, measuring contact Angle, infrared analysis, mechanical properties and dynamic mechanical analysis (DMA). The experimental results show that the mechanical properties of PSOL-GO@GF/EP composites are the best when the ratio of PSOL-GO is 1∶0.1: The interlayer shear strength of modified GF/EP composites is 13.19% higher than that of pure GF/EP composites; Its bending strength increased by 33.12%; Its tensile strength increased by 35.32%; Its impact strength increased by 16.95%. The glass transition temperature (Tg) of GF/EP composites was increased by 7.1℃ by adding PSOL-GO at 1∶0.1 ratio, and the heat resistance of GF/EP composites was improved. The epoxy resin with the introduction of PSOL-GO nano-filler has better wettability to glass fibers, and can fill the gap of pure GF/EP composite itself to enhance the performance of the composite materials.
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Key words:
- graphene oxide /
- epoxy resin /
- glass fibers /
- composite materials /
- fillers /
- mechanical properties
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