疏水型醇酸树脂/SiO_2有机无机杂化材料的制备与性能

Synthesis and Property of Hydrophobic Alkyd Resin/SiO_2 Organic-Inorganic Hybrid Material

基于溶胶凝胶(sol-gel)工艺,采用两步法,以正硅酸乙酯(TEOS)、甲基三乙氧基硅烷(MTES)、己二酸、聚乙二醇400(PEG 400)为原料,制备了疏水型醇酸树脂/SiO2有机无机杂化材料。MTES的Si-CH3基团赋予材料的疏水性能,随着MTES含量的提高,接触角θ增大,当MTES(质量分数,下同)超过15%时,接触角θ增大不明显,并最终稳定在126°左右。红外图谱(FT-IR)和X射线光电子能谱(XPS)分析结果显示,硅溶胶与醇酸树脂间发生了的杂化反应,形成了Si-O-C键。DSC分析结果显示,随SiO2%的提高,杂化材料的耐热性能提高。

Base on sol-gel method, tetraethoxysilane （TEOS）, methyletboxysilane （MTES）, adipic acid and polyethylene glycol 400 （PEG400） were used to synthesize hydrophobic alkyd resin/SiO2 organic-inorganic hybrid material by two-step method. The Si-methyl groups of MTES contribute to hydrophobicity of the hybrid material. The contact angle θ on the surface of hybrid material is increased with the increase of the MTES maas fraction and keeps stable at about 126° for w, （MTES）〉 15%. The transform infrared spectroscopy （FT-IR） and X-ray photoelectron spectroscopy （XPS） spectra show that alkyd resin can hybridize with silica sol and form Si- O- C bonds. Moreover, the differential scanning calorimetry （DSC） results show that the heat resistant property of the hydrophobic alkyd resin/SiO2 organic-inorganic hybrid material has being improved with the increase of the SiO2 mass fraction.