中文摘要：

以甲基巯丙基二甲氧基硅烷（硅烷偶联剂KBM802）为桥梁,D3F（三氟丙基甲基环三硅氧烷）、D4（八甲基环四硅氧烷）、DVi4（四乙烯基-四甲基环四硅氧烷）在酸性条件下调聚成有机氟-硅低聚体,再用有机氟-硅低聚体和KBM802对丙烯酸酯进行改性,乳液聚合法合成了耐水性、耐候性、耐污性优良的氟硅改性丙烯酸酯乳液。采用TG、DSC、红外光谱和X射线衍射分析对乳胶膜进行测试表明,丙烯酸酯单体和有机硅氟氧烷发生了自由基乳液聚合。当D3F的加入量为3.5%时,氟硅改性后的丙烯酸酯乳胶膜比纯丙乳胶膜的分解温度提高了69.5℃。KBM802的加入增加了乳胶膜的硬度、耐水性、耐候性和抗紫外线能力。

英文摘要：

An organic fluorine-silicon oligomer was prepared by using methyl sulfhydryl propyl dimethoxy silane（ silane coupling agent KBM802） as molecular bridge,D3 F { 1,3,5-tris[（ 3,3,3-trifluoropropyl） methyl]cyclotrisiloxane},D4（ octamethylcyclotetrasiloxane）and DVi4（ tetravinyl tetramethylcyelo tetrasiloxane） telomeric as raw materials under acid condition. An acrylate was modified with KBM802 and the resulted oligomer to give a fluorine-silicone modified acrylate emulsion with better water resistance,weatherability and antifouling property. The latex film was characterized by TG,DSC,FT-IR and X-ray diffraction,indicating that a radical emulsion polymerization occurred between acrylate monomer and fluorine-containing siloxane. When the dosage of D3 F was 3. 5%,the decomposition temperature of the modified latex film was increased by 69. 5 ℃ over that of the pure acrylic latex film. Furthermore,KMB802 could provide the modified latex film with higher hardness,better water resistance,weatherability and UV resistance.