为了结合自由基与阳离子两种光固化体系的优点，以解决光固化体系自由基氧气阻聚、阳离子湿气阻聚的问题。本研究将3-乙基-3-羟甲基氧杂环丁烷（TMPO）与4-甲基-1，2-环己二羧酸酐（MHHPA）进行醇解反应，得到含有甲基丙烯酸酯双键及羧基的中间体，再用中间体上的羧基通过羧基开环氧与甲基丙烯酸缩水甘油酯（GMA）反应，合成了一种同时含有甲基丙烯酸酯双键和氧杂环丁烷基团的自由基-阳离子混杂光固化单体，并通过实时红外光谱（RT-IR）、热重分析（TGA）等手段对其进行了固化性能、热性能、机械性能的研究，并将其与混合光固化体系进行了性能比较。研究结果表明：合成的自由基-阳离子混杂光固化单体拥有优良的固化性能、机械性能与热性能，且各方面性能均优于混合光固化体系。
In order to solve the shortcomings of free radical oxygen inhibition and cationic moisture inhibition in photocuring systems， 3-ethyl-3-hydroxymethyloxetane （TMPO） was subjected to alcoholysis reaction with 4-methyl-1，2-cyclohexanedicarboxylic anhydride （MHHPA） to obtain an intermediate containing methacrylate double bond and carboxyl group， and then the intermediate was reacted with glycidyl methacrylate （GMA） to synthesize a free radical-cationic hybrid photocuring monomer containing methacrylate double-bond and oxetane group. Its properties such as curing performance， thermal properties and mechanical properties were studied by real-time infrared spectroscopy （RT-IR） and thermogravimetric analysis （TGA）. It was compared with the performance of the mixed photocuring system.The results showed that the free radical-cation hybrid photocuring monomer synthesized had excellent curing performance， mechanical properties and thermal properties， and was superior to the mixed photocuring system.
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