胡亚龙,李畅,沈丽明,暴宁钟.钛酸铁钠晶须/FEVE复合涂层的制备及其耐磨防腐性能[J].表面技术,2017,46(12):71-77.
HU Ya-long,LI Chang,SHEN Li-ming,BAO Ning-zhong.Preparation and Wear-Corrosion Resistance of Iron Sodium Titanate Whisker/FEVE Composite Coatings[J].Surface Technology,2017,46(12):71-77 |
| 钛酸铁钠晶须/FEVE复合涂层的制备及其耐磨防腐性能 |
| Preparation and Wear-Corrosion Resistance of Iron Sodium Titanate Whisker/FEVE Composite Coatings |
| 投稿时间：2017-09-29 修订日期：2017-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.12.013 |
| 中文关键词: 氟碳树脂 钛酸铁钠晶须 改性 防腐 耐磨 |
| 英文关键词:fluorocarbon resin iron sodium titanate whisker modification anti-corrosion anti-wear |
| 基金项目:国家科技支撑计划（2014BAE12B0104）；国家杰出青年科学基金（51425202）；江苏省自然科学基金-优秀青年基金项目（BK20160093） |
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| Author | Institution |
| HU Ya-long | State Key Laboratory of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China |
| LI Chang | State Key Laboratory of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China |
| SHEN Li-ming | State Key Laboratory of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China |
| BAO Ning-zhong | 1.State Key Laboratory of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China; 2.Jiangnan Graphene Research Institute, Changzhou 213000, China |
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| 中文摘要: |
| 目的 为提升氟碳涂层的耐磨和防腐性能。方法 采用KH550对钛酸铁钠晶须进行改性，并将改性晶须分散于氟碳树脂（FEVE）中，制备钛酸铁钠晶须/FEVE复合涂层。采用红外光谱、接触角、光学显微镜、金相显微镜和扫描电镜等表征方法，分析了改性前后钛酸铁钠晶须的变化及其在树脂中的分散性。采用电化学交流阻抗研究了涂层在模拟海水中的电化学腐蚀行为。采用摩擦磨损试验机研究了涂层的摩擦学性能。结果 钛酸铁钠晶须经改性后，接触角由14.5°增大为111°，呈现出优异的疏水性，能够均匀分散于FEVE中。交流阻抗测试结果表明，复合涂层的防护性能随晶须含量的增加呈现先提升后降低的趋势，当晶须质量分数为10%时，复合涂层的电化学阻抗高达1011 Ω•cm2，优于纯氟碳涂层，呈现出优异的耐腐蚀性能。晶须含量过高时，因晶须交联形成网络结构而降低了涂层的防腐性能。钛酸铁钠晶须的添加同时大幅提升了FEVE涂层的耐磨性能，晶须质量分数为5%的复合涂层表现出最优的摩擦学性能，体积磨损量低至0.0164 mm3，较纯FEVE涂层提升11.2倍。结论 钛酸铁钠晶须/FEVE复合涂层具备优异的耐磨防腐性能，能有效降低实际工况中的涂层损伤，延长涂层的使用寿命。 |
| 英文摘要: |
| The work aims to reinforce wear-corrosion resistance of fluorocarbon coating. Iron sodium titanate whiskers/composite coatings were prepared by modifying the whiskers with KH550 and then distributing them in fluorocarbon resin (FEVE). Changes of the whiskers before and after modification as well as their dispersibility in resin were analyzed in such characterization methods as FTIR, contact angle, optical microscope, metallographic microscope and SEM. Electrochemical corrosion behavior of the coatings in simulated seawater was studied with AC impedance spectroscopy, and tribological properties were investigated with friction and wear tester. Contact angle of the modified whiskers increased from 14.5° to 111°, the modified whiskers exhibited excellent hydrophobicity and could be evenly dispersed in FEVE. As the content of whiskers increased, protective properties of the coatings first increased and then decreased. Electrochemical impedance of the composite coatings reached 1011 Ω•cm2 when mass fraction of the whiskers was 10%, which was superior to that of pure FEVE coating, and the composite coatings exhibited excellent corrosion resistance. Excessively high content of whiskers led to formation of cross-linking structure and decline of corrosion resistance. Meanwhile, addition of the whiskers also improved wear resistance of the FEVE coatings. When mass fraction of the whiskers was 5%, the composite coatings exhibited the optimal tribological properties, volume abrasion loss of the composite coatings was reduced to 0.0164 mm3, which was 11.2 times higher than that of pure FEVE coatings. The iron sodium titanate whiskers/FEVE coatings have excellent wear-corrosion resistance which contributes to effective reduction of coatings damage in the actual working conditions, and extension of service life of the coatings. |
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