钛酸铁钠晶须增强FEVE防腐耐磨复合涂层的制备与性能
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摘要
以三氟氯乙烯/四氟乙烯-烷基乙烯基醚/酯(FEVE)为基料,钛酸铁钠(NaFeTiO_4)晶须为主要减摩耐磨填料,通过液相共混法制备兼具减摩耐磨防腐的无机-有机氟碳复合涂层材料,研究填料在树脂基体中的分散性及填料对涂层减摩耐磨性、防腐蚀性的影响。通过X线衍射仪(XRD)和扫描电子显微镜(SEM)对钛酸铁钠晶须晶型、形貌及晶须在复合涂层中的分散性能进行表征。采用摩擦磨损试验机对涂层摩擦磨损性能进行评价,通过电化学交流阻抗对涂层防腐蚀性能进行评价。结果表明:钛酸铁钠晶须能够均匀稳定地分散在涂层基体中,当钛酸铁钠晶须的添加量为FEVE树脂质量的5%时,涂层的摩擦因数由0.854降低至0.709,体积磨损量由0.17 mm3降低至0.017 mm~3,耐磨性能提升近10倍,同时复合涂层具有优异的防腐蚀性能。
An inorganic-organic composite of iron sodium titanate whisker(NaFeTiO_4)reinforced fluorocarbon composite coating with improved performance in anti-friction,anti-wear,and anti-corrosion was prepared through liquid blending method,using fluorinated ethylene/vinyl monomer copolymerized fluorocarbon resin(FEVE)as the base material and Na Fe Ti O_4whiskers as the main anti-friction and antiwear filler.The crystal structure,morphology,and dispersion of the FEVE composite coating of NaFeTiO_4whiskers were characterized by X-ray diffractometer(XRD)and scanning electron microscope(SEM).The friction,wear bearing,and anti-corrosion performance of the composite coating were evaluated by friction and wear tester and electrochemical impedance.Results showed that NaFeTiO_4whiskers could uniformly disperse in the FEVE matrix without precipitation.When the content of NaFeTiO_4was 5%,the coefficient of friction and wear volume of composite coating reduced from 0.854 and 0.17 mm~3to 0.709 and 0.017 mm~3,respectively.The wear resistance performance was increased by 10 times.The coating showed not only the lowest anti-friction coefficient and wear volume,but also excellent anti-corrosion performance.
An inorganic-organic composite of iron sodium titanate whisker(NaFeTiO_4)reinforced fluorocarbon composite coating with improved performance in anti-friction,anti-wear,and anti-corrosion was prepared through liquid blending method,using fluorinated ethylene/vinyl monomer copolymerized fluorocarbon resin(FEVE)as the base material and Na Fe Ti O_4whiskers as the main anti-friction and antiwear filler.The crystal structure,morphology,and dispersion of the FEVE composite coating of NaFeTiO_4whiskers were characterized by X-ray diffractometer(XRD)and scanning electron microscope(SEM).The friction,wear bearing,and anti-corrosion performance of the composite coating were evaluated by friction and wear tester and electrochemical impedance.Results showed that NaFeTiO_4whiskers could uniformly disperse in the FEVE matrix without precipitation.When the content of NaFeTiO_4was 5%,the coefficient of friction and wear volume of composite coating reduced from 0.854 and 0.17 mm~3to 0.709 and 0.017 mm~3,respectively.The wear resistance performance was increased by 10 times.The coating showed not only the lowest anti-friction coefficient and wear volume,but also excellent anti-corrosion performance.
引文
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[4]王联果.高耐久有机氟涂料在道桥工程中的应用[J].腐蚀与防护,2000,21(11):505.
[5]王永琦.含氟涂料的研制及其在防腐方面的应用[J].涂料工业,1999,29(12):8.
[6]刘登良.氟碳树脂及其在涂料中的应用[J].化工科技市场,1999(11):8.
[7]杨保平,陈建敏,周惠娣.环氧改性氟碳重防腐涂料的研制[J].涂料工业,2004,34(8):1.
[8]吴文莉,倪赢尧.含氟涂料树脂的发展概述[J].广州化工,2005(5):2.
[9]谭伟明,石伟峰,郁飞,等.高性能氟碳涂料的制备及其综合性能研究[J].涂料工业,2015,45(10):7.
[10]杨军,宋洁,李天虎.FEVE树脂常温固化耐磨涂料的研究[J].涂料工业,2006,36(10):23.
[11]BAO N Z,FENG X,SHEN L M,et al.Calcination syntheses of a series of potassium titanites s and their morphologic evolution[J].Crystal growth&design,2002,2(5):437.
[12]BAO N Z,FENG X,LU X H,et al.Study on the formation and growth of potassium titanate whiskers[J].Journal of materials science,2002,37(14):3035.
[13]冯新,陈东辉,江晓红,等.钛酸钾晶须增强聚四氟乙烯复合材料的摩擦磨损性能[J].高分子材料科学与工程,2004,20(5):129.
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