尼龙-6改性环氧树脂涂层耐腐蚀性能的研究  

Corrosion resistance of nylon-6 modified epoxy resin coatings

作　　者：邵刚刚 曾瑜 秦瑞 吴栋 郭伟杰[1] 周海骏[1] 李照磊[1,2,3] SHAO Ganggang;ZENG Yu;QING Rui;WU Dong;GUO Weijie;ZHOU Haijun;LI Zhaolei(School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China;College of Engineering and Applied Science,Nanjing University,Nanjing 210093,China;Jiangsu Stike New Material Technology Co.Ltd.,Suzhou 215400,China)

机构地区：[1]江苏科技大学材料科学与工程学院,镇江212100 [2]南京大学现代工程与应用科学学院,南京210093 [3]江苏斯迪克新材料科技股份有限公司,苏州215400

出　　处：《江苏科技大学学报（自然科学版）》2022年第4期21-27,63,共8页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(51903111);江苏科技大学博士科研启动项目(1062931603)。

摘　　要：采用六氟异丙醇为溶剂,制备了不同尼龙-6含量的环氧树脂复合涂层.通过电化学阻抗、扫描电镜、Flash DSC等手段研究了尼龙-6在复合涂层中的分散行为及其对涂层耐腐蚀性能的影响.利用XRD、常规DSC考察了尼龙-6在复合涂层中的凝聚态结构以及在110℃退火处理对复合涂层耐腐蚀性能的影响.结果表明,当尼龙-6质量百分含量为2.5%的时候,尼龙-6在复合涂层中的分散性最佳,且阻抗值对比纯环氧树脂涂层要高一个数量级.复合涂层中的非晶态尼龙-6在升温过程中可以发生冷结晶.经过110℃退火处理之后,复合涂层的阻抗值对比之前又增大了一个数量级.文中相关研究是可结晶高分子在改性热固性高分子方面的实际应用,为提高环氧树脂耐蚀性能提供了新的参考.Epoxy resin composite coatings with different nylon-6 content were prepared by using hexafluoroisopropanol as solvent.The dispersion behavior of nylon-6 in the composite coating and its effect on the corrosion resistance of the coating were studied by means of electrochemical impedance spectroscopy(EIS),scanning electron microscope(SEM)and Flash DSC.The condensed structure of nylon-6 in the composite coating and the effect of annealing treatment at 110℃on the corrosion resistance of the composite coating were investigated by XRD and conventional DSC.The results show that when the content of nylon-6 is 2.5%,the dispersion of nylon-6 in the composite coating is the best,and the impedance value of nylon-6 is one order of magnitude higher than that of pure epoxy resin coating.The amorphous nylon-6 in the composite coating can be cold crystallized during heating.After annealing at 110℃,the impedance of the composite coating increased by an order of magnitude compared with that before.The research in this paper is a practical application of crystallizable polymers in modified thermosetting polymers,which provides a new conception for improving corrosion resistance of the epoxy resin.

关 键 词：尼龙-6 环氧树脂 耐腐蚀性 结晶行为 

分 类 号：O631.1[理学—高分子化学]