不同含量的PAI对PTFE疏水涂层性能的影响  

Effect of Different Contents of PAI on Properties of PTFE Hydrophobic Coating

作　　者：韩星 卞达 赵永武 HAN Xing;BIAN Da;ZHAO Yong-wu(School of Mechanical Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122

出　　处：《塑料工业》2020年第10期142-145,169,共5页China Plastics Industry

基　　金：国家自然科学基金项目(51675232);中央高校基本科研业务费专项资金(JUSRP51729A);国家轻工技术与工程一流学科自主课题资助(2018-29);机械工程学院机械工程学科建设经费(10752103721800101007)。

摘　　要：以聚四氟乙烯(PTFE)为主要原料,聚四氟乙烯相容的聚酰胺酰亚胺(PAI)为黏结剂,采用喷涂的方法制备一种耐蚀性优良的疏水涂层。通过chi660e电化学工作站研究不同含量的PAI对涂层耐蚀性的影响,采用扫描电镜(SEM)观察涂层腐蚀后的表面形貌;采用接触角、黏结力实验对涂层的疏水性、黏结强度进行表征。结果表明,疏水涂层中PAI的含量为15%时,制备的涂层孔隙率少、具有良好的疏水性、黏结力以及较强的耐蚀性。A hydrophobic coating with excellent corrosion resistance was prepared by spraying polytetrafluoroethylene(PTFE)as the main raw material and polyamide imide(PAI)as binder.The effect of different contents of PAI on the corrosion resistance of the coating was studied by chi660 e electrochemical workstation.The surface morphology of the coating after corrosion was observed by scanning electron microscope(SEM).The hydrophobicity and bonding strength of the coating were characterized by contact angle and adhesive force test.The results show when the content of polyamide imide in the hydrophobic coating is 15%,the coating has less porosity,good hydrophobicity,adhesion and strong corrosion resistance.

关 键 词：聚四氟乙烯 聚酰胺酰亚胺 耐蚀 疏水 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业]