粉煤灰/聚丙烯酸钠高吸水复合材料的研制

Preparation for fly ash/sodium polyacrylate superabsorbent polymer composite material

粉煤灰能够吸水蓄水,并且从“植物→煤→粉煤灰”转化历程可见粉煤灰自身含有多种营养元素,对土壤有很好的改良效果。本研究首次以丙烯酸和粉煤灰为原料,采用溶液聚合法制备粉煤灰/聚丙烯酸钠高吸水复合材料,以使高吸水材料成本降低,环境相容性提高。实验表明,当温度为70℃,以丙烯酸单体为基准,中和度为100%,交联荆添加量为0．050%,引发剂添加量为0．250%,粉煤灰添加量为50%时,所合成的复合材料吸蒸馏水和自来水倍率最高,分别为443．6、192．2g/g。同时,红外光谱分析也能说明粉煤灰已经很好地复合到聚合物当中。

The fly ash can absorb a little water, and inherits various nutrient elements so it may improve quality of soil clearly for the transform course of ＂plant-coal-fly ash＂. Fly ash and acrylic acid were firstly used in preparation of fly ash/sodium polyacrylate super absorbent polymer （SAP） composite material by solution polymerization in order to reduce cost and improve environment compatibility. Experimental results indicate that the composite material absorbs distilled water and tap water 443.6,192.2g/g at 70℃ with the content of cross linker, initiator and fly ash 0. 050%,0. 250%,50% of the quality of monomer respectively, and neutralization 100%. Infrared spectrum also illuminates fly ash is compounded into polymer primely contemporary.