膨胀石墨填充氟橡胶复合材料耐腐蚀性能研究

发布时间：2018-05-09 19:36

本文选题：氟橡胶 + 膨胀石墨　；参考：《塑料工业》2017年06期

【摘要】：利用Hummer法制备出可膨胀石墨,经过高温膨胀制得膨胀石墨(EG)。采用机械共混法制备出EG/氟橡胶复合材料。采用扫描电子显微镜观察EG表面微观形貌。研究了不同含量的EG/氟橡胶复合材料的硫化性能,以及硫化后常温、热空气老化、酸性条件、碱性条件、油性条件对不同含量的EG/氟橡胶复合材料的物理力学性能的影响。结果表明,EG为蠕虫状疏松多孔物质;常温条件下,随着EG用量的增加,复合材料交联密度增大,拉伸强度有所降低,但10份EG含量复合材料的拉伸强度与纯氟橡胶(FKM)相差不多。通过综合性能的对比,四种介质对试样性能的影响大小:高温酸性(HCl)高温碱性(NaOH)高温油性热空气老化;加入10份EG的复合材料表现出了优异的耐低温、耐盐酸、耐油能力。
[Abstract]:Expandable graphite was prepared by Hummer method, and expanded graphite was prepared by high temperature expansion. EG/ fluorine rubber composites were prepared by mechanical blending method. The surface morphology of EG was observed by scanning electron microscope (SEM). The vulcanization properties of EG/ fluororubber composites with different contents and the effects of curing temperature, thermal air aging, acid conditions, alkaline conditions and oil properties on the physical and mechanical properties of EG/ fluororubber composites with different contents were studied. The results show that EG is a wormlike porous material, and at room temperature, the crosslinking density increases and the tensile strength decreases with the increase of EG content, but the tensile strength of 10 phr EG composite is not different from that of pure fluorine rubber (FKM). Through the comparison of comprehensive properties, the effects of four kinds of media on the properties of the samples are as follows: high temperature acid HCl) high temperature alkaline NaOH) high temperature oil hot air aging, and the composites with 10 phr EG have excellent low temperature resistance, hydrochloric acid resistance and oil resistance.
【作者单位】：桂林电子科技大学材料科学与工程学院;
【分类号】：TB332

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