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首页> 外文期刊>Journal of Applied Polymer Science >Thermal and mechanical properties of microwave- and heat-cured poly(methyl methacrylate) used as dental base material
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Thermal and mechanical properties of microwave- and heat-cured poly(methyl methacrylate) used as dental base material

机译：微波和热固化聚甲基丙烯酸甲酯作为牙科基材的热力学性能

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摘要

The thermal and mechanical properties of dental base materials cured by microwave and conventional heat methods were studied. The commercial dental base poly(methvl metacrylate) (PMMA) powder and liquid were mixed in a 3/1 ratio. They were polymerized by a peroxy catalyst at 63degreesC, then cured with a boiling water temperature and microwave radiation for periods of 5, 10, 15, 20, 25, 30, and 35 min for heat curing and 1, 2, 3, 5, and 7 min for microwave radiation. The microwave radiation outputs used were 500 and 700 W. The products of 5-min heat curing and 1-, 2-, and 7-min microwave curing were soluble in chloroform. All the others were partially soluble. The viscosity-average molecular weights of the soluble samples were about 1 x 10(6). The thermal properties of the polymer samples were studied by differential scanning calorimetry [References: 17]
机译：研究了通过微波和常规加热方法固化的牙科基材的热和机械性能。将市售的牙科用基聚甲基丙烯酸甲酯（PMMA）粉末和液体以3/1的比例混合。它们在63℃下通过过氧催化剂聚合，然后在沸水温度和微波辐射下固化5、10、15、20、25、30和35分钟以进行热固化，然后在1，2，3，5下固化。和7分钟的微波辐射。所用的微波辐射输出分别为500和700W。5分钟热固化和1、2和7分钟微波固化的产物可溶于氯仿。所有其他都部分溶解。可溶性样品的粘均分子量约为1 x 10（6）。通过差示扫描量热法研究了聚合物样品的热性能[参考文献：17]

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