文章摘要
王娜.卡拉胶改性三聚磷酸铝对水性环氧涂层防腐性能的影响[J].精细化工,2021,38(2):
卡拉胶改性三聚磷酸铝对水性环氧涂层防腐性能的影响
Effect of Carrageenan Modified Aluminum Tripolyphosphate on Corrosion Resistance of Waterborne Epoxy Coating
投稿时间:2020-07-13  修订日期:2020-09-19
DOI:
中文关键词: 卡拉胶  三聚磷酸铝  水性环氧树脂  涂层  防腐性能
英文关键词: Carrageenan  Aluminum Tripolyphosphate  waterborne epoxy resin  coatings  anticorrosive property
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目);国家重点基础研究发展计划(973计划)
作者单位E-mail
王娜 沈阳化工大学材料学院 iamwangna@sina.com 
摘要点击次数: 41
全文下载次数: 0
中文摘要:
      通通过卡拉胶(KC)对三聚磷酸铝(ATP)进行接枝改性获得KC-ATP改性填料,再将其添加到水性环氧树脂(WEP)中制备复合防腐涂层。采用FTIR、XPS、TG、SEM对ATP改性前后的形貌、结构进行表征。结果表明,KC成功地接枝到ATP表面,改善了ATP的水溶性。采用电化学阻抗谱(EIS)和盐雾实验考察了复合涂层的防腐性能。结果表明,复合涂层的防腐性能明显优于纯水性环氧涂层,且当KC-ATP功能填料含量为1.0%时(以水性环氧树脂的质量为基准,下同),涂层的耐腐蚀性能达到最佳,浸泡48 h后涂层的极化电阻Rp为8.183×107 Ω∙cm2,远高于ATP改性复合涂层和纯环氧涂层。
英文摘要:
      Carrageenan (KC) was grafted onto aluminum tripolyphosphate (ATP) to achieve new modified filler (KC-ATP), and then KC-ATP was added into waterborne epoxy (WEP) to prepare anticorrosive composite coatings. The morphology and structure of ATP before and after modification were characterized by FTIR, XPS, TG and SEM. The results showed that KC was successfully grafted onto the surface of ATP, which improved the water solubility of ATP. The corrosion resistance of the composite coatings was investigated via electrochemical impedance spectroscopy (EIS) and salt spray test. The results revealed that the anticorrosive property of composite coatings was obviously superior to that of neat waterborne epoxy coating, and the corrosion resistance of composite coating was best when adding 1.0% (based on the quality of waterborne epoxy resin, the same below) KC-ATP functional pigment. The polarization resistance Rp of the coating after being immersed for 48 hours is 8.183×107 Ω∙cm2, which is much higher than those of ATP modified composite and pure epoxy coatings.
  查看/发表评论  下载PDF阅读器
关闭