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为了改善膜的附着力、稳定性及力学性能,采用自由基溶液聚合法制备了环氧苯丙树脂,并将此树脂与无机钛溶胶进行复配得到一种有机-无机杂化膜。考察了工艺条件、甲基丙烯酸缩水甘油酯用量对聚合物相对分子质量(简称分子量,下同)分布的影响,结果表明,以单体总质量14%的过氧化苯甲酰(BPO)为引发剂,反应温度90℃,甲基丙烯酸缩水甘油酯(GMA)用量为7.5%(以单体总质量计)时,制得的环氧苯丙树脂其Mn=5985、Mw=13 826及PDI=2.31。通过全反射红外光谱(ATR-FTIR)、热重分析(TG)、涂膜性能测试表明,成功地合成了有机-无机杂化材料,与环氧苯丙树脂膜相比,其热稳定性提高不明显但具有优良的涂膜性能。
In order to improve the adhesion, stability and mechanical properties of the films, the epoxy styrene-acrylic resin was prepared by free-radical solution polymerization and the organic-inorganic hybrid film was prepared by compounding the resin with the inorganic titanium sol. The effects of process conditions and the amount of glycidyl methacrylate on the molecular weight distribution of the polymer were investigated. The results showed that with the total monomer weight of 14%, benzoyl peroxide (BPO) Agent, the reaction temperature is 90 ° C, the amount of glycidyl methacrylate (GMA) is 7.5% (based on the total mass of monomer), the obtained epoxy styrene resin has Mn = 5985, Mw = 13 826 and PDI = 2.31. The results of ATR-FTIR, TG and coating film showed that the organic-inorganic hybrid materials were successfully synthesized and their thermal stability was improved compared with epoxy styrene-acrylic resin films Not obvious but with excellent coating performance.