光固化聚酯多元醇改性超支化甲基丙烯酸酯的合成及性能

光固化聚酯多元醇改性超支化甲基丙烯酸酯的合成及性能

8 functionality photocurable polyester polyol modified hyperbranched methacrylates of two types were prepared from trimellitic anhydride, glycidyl methacrylate, and 4 functionality polyester polyol of two types. The physical properties of photocurable polyester polyol modified hyperbranched methacrylate were investigated. Thermal stability obtained by using TGA showed that HBMA-2 (hyperbranched methacrylate-2) was superior to the HBMA-1 (hyperbranched methacrylate-1). Hardness, abrasion resistance and tensile strength of HBMA-2 showed that were also superior to the HBMA-1. Value of yellow index of HBMA-2 showed the higher.

以偏苯三酸酐、甲基丙烯酸缩水甘油酯和两种4官能度聚酯多元醇为原料，制备了两种8官能度光固化聚酯多元醇改性超支化甲基丙烯酸酯，研究了光固化聚酯多元醇改性超支化甲基丙烯酸酯的物理性能，通过TGA测定热稳定性能表明HBMA-2（超支化甲基丙烯酸酯-2）优于HBMA-1（超支化甲基丙烯酸酯-1），HBMA-2的硬度、耐磨性和拉伸强度均优于HBMA-1，HBMA-2的黄度指数值较高。

以偏苯三酸酐和甲基丙烯酸缩水甘油酯与两种4官能聚酯多元醇反应合成了两种8官能光固化聚酯多元醇改性超支化甲基丙烯酸酯，并对光固化膜的物理性能进行了研究。用热重分析仪（TGA）测量的UV固化膜的热稳定性优于HBMA-2（超支化甲基丙烯酸酯-2），优于HBMA-1（超支化甲基丙烯酸酯-1）。此外，HBMA-2在硬度、耐磨性、拉伸强度等方面均优于HBMA-1，耐候性测试也表明HBMA-2具有更高的黄色指数值。

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