含氟聚合物的合成及其对环氧涂料改性的研究-高分子化学与物理专业论文.docxVIP

河北工业大学硕士学位论文 河北工业大学硕士学位论文 SYNTHESIS OF FLUORINATED COPOLYMER AND ITS APPLICATION IN EPOXY COATING ABSTRACT A hydrophobic copolymer P(FA-co-GMA-co-St) was prepared by Free radicals emulsion polymerization and the effects of monomer feed ratio on the copolymer was studied. The hydrophobic epoxy coating was prepared by blending copolymers. Five different types of epoxy resin was modified and find that the hydrophobicity of all the coatings was significantly enhanced. Contact angle of modified epoxy coating was increased from64° to 131° and surface energy dropped from 52.6mN.m-1 to 10.2mN.m-1. Water absorption of the coating was 2.7% before modified and dropped to 1.2% after modified by the copolymer. The surface reconstruction of modified epoxy coating in the wet condition was also studied. The result showed that contact angle of non-epoxy fluorinated copolymers modified coating sharply decreased by 48° to 88° after 48h exposure in water and the surface fluorine element reduced by 7.94%. The contact angle of epoxy fluorinated copolymer modified coating decreased by 15° to 116° after 48h exposure in water and the surface fluorine element reduced by 5.36%. The environmental stability of super-hydrophobic epoxy coatings was improved by epoxy copolymer. A series of corrosion resistance tests of modified epoxy coating showed that corrosion resistance and hydrophobicity of the coating were improved without depressing the mechanical properties. The surface energy and water absorption rate was reduced by mixing copolymer and the corrosion resistance can be greatly improved when the copolymer was added. v 含氟聚合物的合成及其对环氧涂料的改性 含氟聚合物的合成及其对环氧涂料的改性 KEYWORDS：epoxy, fluoropolymers, glycidyl methacylate, hydrophobic, contact angle vi 河北工业大学硕士学位论文 河北工业大学硕士学位论文 原创性声明 本人郑重声明:所呈交的学位论文，是本人在导师指导下，进行研究工 作所取得的成果。除文中已经注明引用的内容外，本学位论文不包含任何他 人或集体己经发表的作品内容，也不包含本人为获得其它学位而使用过的材 料。对本论文所涉及的研究工作做出贡献的其它个人或集体，均己在文中以 明确方式标明。本学位论文原创性声明的法律责任由本人承担。 学位论文作者签名:王品 I 日期: ν{Iζ. )Jf. 关于学位论文版权 使用授权的说明 本人完全了解河北工业大学关于收集