以正硅酸乙酯（TEOS）为水解前驱体制得二氧化硅（SiO2）,并通过硅烷偶联剂（KH570）表面改性后,与全氟烷基乙基丙烯酸酯（FM））等乙烯基单体聚合,通过无皂乳液聚合方法制备了氟硅改性丙烯酸酯有机/无机杂化无皂乳液。FT-IR分析表明,TEOS水解为SiO2,并与丙烯酸酯单体、氟单体参与了共聚反应;采用TEM及AFM对乳胶粒的形态结构进行表征,发现乳胶粒分布较为均一,平均粗糙度和致密程度较高;DLS分析表明乳液平均粒径为49.49nm;接触角测试表明氟单体、硅溶胶及KH570的加入显著提高了涂膜的防水性。
Organic/inorganic fluorinated and siloxane acrylates soap-free emulsion was prepared by the organic/inorganic hybrid polymerization.With tetraethyl orthosilicate（TEOS） and γ-methacryloxy propyl trimethoxysilane（KH570） as silicon monomers,2-（perfluoroalkyl）ethyl acrylate（FM） as fluorine monomer.FT-IR results indicate that TEOS has hydrolied into SiO2,the acrilyic ester molecules,fluoro agent and silicon sol have participated in the copolymerization.The morphology structure of latex particles were characterized by TEM and AFM,the results indicate that the latex particles are well-distributed,the roughness and density have greatly improved.The DLS analysis shows the average particle size is about 49.49nm.The CA results illustrate that the add of FM,silicon sol and KH570 have significantly improved the waterproof property of the coatings.
参考文献
| [1] | 徐祖顺,陈中华,涂伟萍,杨卓如,陈焕钦.含氟聚合物乳液的研制及应用[J].功能高分子学报,2000(02):229-232. |
| [2] | 余樟清.涂料用含氟聚合物乳液的研究和应用[J].高分子通报,2000(02):65-68,封3. |
| [3] | Yang CH;Liu FJ;Liu YP;Liao WT .Hybrids of colloidal silica and waterborne polyurethane[J].Journal of Colloid and Interface Science,2006(1):123-132. |
| [4] | Yuce MY;Demirel AL;Menzel F .Tuning the surface hydrophobicity of polymer/nanoparticle composite films in the wenzel regime by composition[J].Langmuir: The ACS Journal of Surfaces and Colloids,2005(11):5073-5078. |
| [5] | Reculusa S;Mingotaud C;Bourgeat-Lami E;Duguet E;Ravaine S .Synthesis of daisy-shaped and multipod-like silica/polystyrene nanocomposites[J].Nano letters,2004(9):1677-1682. |
| [6] | 庞金兴,熊焰,张超灿,吴力立.纳米SiO2/有机硅/聚丙烯酸酯复合乳液的合成[J].武汉理工大学学报,2001(12):16-19. |
| [7] | McHale G.;Newton MI. .Frenkel's method and the dynamic wetting of heterogeneous planar surfaces[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2002(1/3):193-201. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%