石墨对碳毡/地质聚合物复合材料摩擦性能影响
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摘要
以地质聚合物为基体,水玻璃和氢氧化钠为碱激发剂,碳(纤维)毡为增强材料,石墨为摩擦性能调节剂制备了碳毡/地质聚合物复合摩擦材料。使用AG-10万能试验机、摩擦试验机、扫描电镜(SEM)及X射线衍射(XRD)等检测仪器对碳毡/地质聚合物复合摩擦材料的力学性能与摩擦性能进行研究。结果表明,当石墨掺量增加到9%时,复合材料抗压强度和弯曲强度分别为55.13 MPa和20.22 MPa;石墨的加入让复合摩擦材料的摩擦因数及磨损率均减小。复合摩擦材料在同一摩擦转速下摩擦因数随石墨含量的增大趋于减小。
The carbon felt/geopolymer composite friction material was prepared by using geopolymer as the matrix, water glass and sodium hydroxide as alkali excitation agent, carbon(fiber) felt as reinforcing material and graphite as friction modifier.The mechanical properties and friction properties of carbon felt/geopolymer composite friction materials were studied using AG-10 kN universal testing machine, friction testing machine,scanning electron microscope(SEM) and X-ray diffraction(XRD).The results show that when the graphite content increases to 9%, the composites compressive strength and bending strength were 55.13 MPa and 20.22 MPa.The graphite was added so that the friction coefficient and wear rate of the composite friction material were reducedComposite friction material at the same rotational speed of the friction coefficient of friction with increasing graphite content tends to decrease.
The carbon felt/geopolymer composite friction material was prepared by using geopolymer as the matrix, water glass and sodium hydroxide as alkali excitation agent, carbon(fiber) felt as reinforcing material and graphite as friction modifier.The mechanical properties and friction properties of carbon felt/geopolymer composite friction materials were studied using AG-10 kN universal testing machine, friction testing machine,scanning electron microscope(SEM) and X-ray diffraction(XRD).The results show that when the graphite content increases to 9%, the composites compressive strength and bending strength were 55.13 MPa and 20.22 MPa.The graphite was added so that the friction coefficient and wear rate of the composite friction material were reducedComposite friction material at the same rotational speed of the friction coefficient of friction with increasing graphite content tends to decrease.
引文
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[2]MOHANTY R M.Climate Based Performance of Carbon-Carbon Disc Brake for High Speed Aircraft Braking System[J].Defence Science Journal,2013,63(5):531-538.
[3]田方.二甲醚汽车发展现状研究及前景分析[J].汽车实用技术,2012(9):84-87.
[4]陈辉,吴其胜.制动摩擦材料中的新型增强材料[J].中国建材科技,2010(6):71-75.
[5]曲烈,杨久俊,乐俐,等.改性粉煤灰微珠摩擦材料摩擦磨损性能的研究[C]//第十届(天津)国际摩擦密封材料技术交流暨产品展示会及首届国际汽车摩托车零部件专利新产品技术交流暨展示会论文集.天津:中国摩擦密封材料协会,2009:47-54.
[6]李宗霖,陈丁猛,董知之,等.聚合物/凹凸棒土复合材料研究现状[J].科技创新导报,2012(35):4-5.
[7]叶雄伟,马骁,何巨鹏.地聚合物微观结构研究进展[J].粉煤灰综合利用,2016(2):44-48.
[8]薛彩红,聂金合,高莉.水玻璃对偏高岭土基地质聚合物材料性能的影响[J].非金属矿,2015(5):5-7.
[9]李专,肖鹏,熊翔.连续纤维增强陶瓷基复合材料的研究进展[J].粉末冶金材料科学与工程,2007,12(1):13-19.
[10]姜爱雄,徐立新,管厚兵,等.硅灰含量对碳毡/水泥复合材料摩擦学性能的影响[J].机械工程材料,2017,41(5):74-78.[11闵孟禹,徐立新,姜爱雄,等.石墨对碳毡/水泥复合材料摩擦性能的影响[J].非金属矿,2017,40(6):101-103
[12]TCHAKOUTéH K,RüSCHER C H,KONG S,et al.Geopolymer binders from metakaolin using sodium waterglass from waste glass and rice husk ash as alternative activators:A comparative study[J].Construction&Building Materials,2016,114:276-289.
[13]NIKOLOV A,ROSTOVSKY I,NUGTEREN H.Geopolymer materials based on natural zeolite[J].Case Studies in Construction Materials,2017,6:198-205.
[14]WAN Q,RAO F,SONG S,et al.Geopolymerization reaction,microstructure and simulation of metakaolin-based geopolymers at extended Si/Al ratios[J].Cement&Concrete Composites,2017,79:45-52.
[15]徐兴亚,张立同,成来飞.碳陶刹车材料的研究进展[J].航空制造技术,2014(6):100-103.