采用微乳液聚合法合成苯胺-对苯二胺共聚物P(ANI-PDA),采用原位乳液聚合法制备水性聚氨酯-丙烯酸酯复合乳液(WPUA),根据物理共混法制备出苯胺-对苯二胺共聚物/水性聚氨酯-丙烯酸酯复合涂层 P (ANI-PDA)/WPUA.采用原子力显微镜(AFM)、热重分析(TGA)、吸水率测试、电化学测试和盐雾实验对 P (ANI-PDA)/WPUA的形貌、热稳定性和防腐性能进行了表征和测试,研究了 P(ANI-PDA)用量对涂层防腐性能的影响.结果表明,随着P(ANI-PDA)用量的增加,胶膜的热稳定性提高,乳胶粒粒径增大,当P(ANI-PDA)用量为1．5％时,胶膜的吸水率最低为4．1％,腐蚀电位为－1．034 V,腐蚀电流密度为2．75×10－7 A·cm2,耐盐雾最好,防腐性能最佳.
P-phenylenediamine-aniline copolymer P(ANI-PDA)was synthesized by micro-emulsion polymeriza-tion;waterborne polyurethane - acrylate composite emulsion (WPUA)was prepared by in-situ emulsion poly-merization;P(ANI-PDA)/WPUA were prepared according to the physical blending method.The thermal abili-ty and morphology of P(ANI-PDA)/WPUA were characterized by TGA and AFM,the anticorrosion properties of composite coatings were studied by water absorption,Spray salt test and electrochemical test,and the an-ticorrosion properties of coatings with different contents P(ANI-PDA)were studied.The results showed that the crystallinity of P(ANI-PDA)is high;the latex particle diameters were increased ,the thermal ability were improved with increasing the content of P(ANI-PDA),when P(ANI-PDA)in an amount of 1 .5%,the coating displays the best salt spray resistance and anticorrosion property,the water absorption of films is 4.1%,the corrosion potential is -1.034 V,the corrosion current density is 2.75×10-7 A·cm2 .
参考文献
| [1] | Zhang, Y.;Shao, Y.;Zhang, T.;Meng, G.;Wang, F..High corrosion protection of a polyaniline/organophilic montmorillonite coating for magnesium alloys[J].Progress in Organic Coatings: An International Review Journal,20135(5):804-811. |
| [2] | M. Rani;R. Ramachandran;S. Kabilan.A facile synthesis and characterization of semiconducting p-phenylenediamine-aniline copolymer[J].Synthetic Metals,20107/8(7/8):678-684. |
| [3] | Xue Wang;Peng Liu.Improving the electrochemical performance of polyaniline electrode for supercapacitor by chemical oxidative copolymerization with p-phenylenediamine[J].Journal of industrial and engineering chemistry,20144(4):1324-1331. |
| [4] | Bin Yao;Gengchao Wang;Xingwei Li;Zhiping Zhang.Anticorrosive Properties of Epoxy Resin Coatings Cured by Aniline/p-Phenylenediamine Copolymer[J].Journal of Applied Polymer Science,20094(4):1988-1993. |
| [5] | Gurunathan, T.;Rao, C.R.K.;Narayan, R.;Raju, K.V.S.N..Synthesis, characterization and corrosion evaluation on new cationomeric polyurethane water dispersions and their polyaniline composites[J].Progress in Organic Coatings: An International Review Journal,20134(4):639-647. |
| [6] | Sathiyanarayanan S;Azim SS;Venkatachari G.Corrosion resistant properties of polyaniline-acrylic coating on magnesium alloy[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,20064(4):2113-2117. |
| [7] | Peruzzo, P.J.;Anbinder, P.S.;Pardini, O.R.;Vega, J.;Costa, C.A.;Galembeck, F.;Amalvy, J.I..Waterborne polyurethane/acrylate: Comparison of hybrid and blend systems[J].Progress in Organic Coatings,20113(3):429-437. |
| [8] | Wang, Y.;Qiu, F.;Xu, B.;Xu, J.;Jiang, Y.;Yang, D.;Li, P..Preparation, mechanical properties and surface morphologies of waterborne fluorinated polyurethane-acrylate[J].Progress in Organic Coatings: An International Review Journal,20135(5):876-883. |
| [9] | Wang, X.;Shen, Y.;Lai, X..Micromorphology and mechanism of polyurethane/polyacrylate membranes modified with epoxide group[J].Progress in Organic Coatings: An International Review Journal,20141(1):268-276. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%