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采用反相悬浮聚合法合成了3种聚丙烯酸系列吸水树脂:聚丙烯酸钠(PAA)、丙烯酸-丙烯酰胺共聚物(P(AA/AM))和丙烯酸-马来酸酐共聚物(P(AA/MA)).对3种树脂的吸水性、保水性、耐候性和耐电解质等性能进行测试比较.结果表明,P(AA/MA)的吸水性能最优异,10 min内吸蒸馏水量可达3578.4 g/g;在一定的温度或压力范围内,3种树脂均有良好的保水性能,在不同温度下储存均能保持各自的吸水性;P(AA/MA)的耐电解质性能较为突出,吸生理盐水量可达107.2 g/g,其综合性能最好.

参考文献

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