纳米钼酸盐阻燃剂的制备及表征

Preparation and Characterization of Nanometre Salt Molybdate Smoldering Agent

采用熔盐法合成了阻燃剂纳米钼酸镁、钼酸钙、钼酸钡。利用X射线衍射测定了其晶体结构,通过热重及差热分析比较了碱土金属钼酸盐的阻燃效果。结果表明,钼酸钙热稳定性较差,钼酸镁的失重温度比钼酸钙高约10℃,比钼酸钡高50℃以上;钼酸镁在分解过程中整体属于放热,钼酸钙、钼酸钡属于吸热过程,钼酸镁、钼酸钡和钼酸钙的阻燃效果依次递增。

The smoldering agent nanometre mognesium molybdate, calcium molybdate and barium molyb- date are systhesised by flux method. The crystal structure are determined by X - ray diffraction, the flame reatrdant effect of alkaline earth molybdate are compared by thermal weight and differental thermal analy- sis. The result show, the heat stability of calcium molybdate is poor, the losstemperature of magnesium mo- lybdate is higher 10 ℃ than calicium molybdate, over 50℃ than calcium molybdate;the decomposition process of maghesium molybdate is exothermic process, the and barium molybdate is endothermic prcess, the smoldering lybdate and calcium molybdate is order decline. decomposition process of calcium molybdate effect of maghesium molybdate, barium mo-