【摘要】 以丙烯酸树脂合成单体为原料,加入纳米SiO2,制备了纳米氧化硅改性的丙烯酸树脂预聚体。与环氧树脂继续共聚,得到纳米氧化硅改性的环氧丙烯酸树脂。通过扫描电镜(SEM)、差示扫描量热(DSC)、热失重(TG)及涂膜性能测试,对产物进行了一系列研究与表征。结果表明:纳米SiO2均匀分布在共聚物中,说明纳米SiO2中的羟基参与了环氧丙烯酸树脂的共聚;且纳米SiO2的加入提高了环氧丙烯酸树脂的耐热性。与未改性的环氧丙烯酸树脂相比,加入纳米SiO2能有效提高涂层的耐水煮、耐黄变、硬度、吸水率及耐盐水腐蚀的性能。更多还原

【Abstract】 The nano-silica modified acrylate resin pre-polymer was prepared with using acrylic resin as basic materials and adding nano-silica.The nano-silica modified acrylic resin was obtained by copolymerization of the pre-polymer and epoxy resins.The product was investigated and characterized by SEM,DSC,TG and property tests of the coating films.The results showed that the nano-silica uniformly dispersed in the copolymer and it indicated that the hydroxy groups of nano-silica took part in the copolymerization of epoxy acrylate resins.And the addition of nano-silica had improved the weatheability of the copolymer.The water boiling resistance,yellowing temperature,hardness,water absorption rate and saline corrosion resistance of the coating film had been enhanced effectively by adding the nano-silica compared with the unmodified epoxy acrylate resins.更多还原