作　　者： ; ;

机构地区： 贵州大学

出　　处： 《中国农学通报》 2011年第7期284-289,共6页

摘　　要： 为了修复土壤墒值,缓解干旱对作物和林木的影响,制备一种含磷农用保水剂;笔者采用水溶液聚合法,创新性的加入磷尾矿粉,以N,N'-亚甲基双丙烯酰胺为交联剂,过硫酸铵为引发剂,丙烯酰胺和部分中和的丙烯酸为单体;经实验优化得到含磷农用保水剂的最优反应条件:聚合温度75℃,丙烯酸中和度60%,丙烯酸浓度15%,丙烯酸与丙烯酰胺质量比4:1,引发剂用量为单体质量的0.5%,交联剂用量为单体质量的0.02%,磷尾矿粉添加量10g。在上述条件下制备的保水剂吸蒸馏水量为621g/g,吸盐水量为52.71g/g;通过实验制备的含磷农用保水剂,除具有保水复墒作用外,还可以累计释放磷元素,在帮助作物生长的同时,缓解磷尾矿粉对环境造成的压力。 In order to repair soil moisture,remit the influence to crops and forest that was brought by drought,the writer planed to prepare a kind of phosphoric agricultural absorbent resin.The writer adopted aqueous solution polymerization,during the process added the phosphorus power,adopted N ,N ＇-methylene-bis- acrylamide as crosslinking agent,ammonium persulfate as initiator dosage,acrylamide（AM） and part-neutralised acrylic acid（AA） as raw material,during this preparation added some phosphorus power;After the system experiments,the writer obtained the optimum reaction condition： polymerization temperature was 75℃,the neutralization degree of acrylic acid was 60%,the concentration of acrylic acid was 15%,the ratio between acrylamide and acrylic acid was 4：1,the amount of initiator dosage was 0.5% ,the amount of crosslinker agent was 0.02%,the amount of phosphorus power was 10.Prepared the absorbent resin with such conditions,then found the kind of absorbent resin with the water absorption was 621 g/g and 52.71 g/g in distilled water and saline water.Through this experiment,phosphoric agricultural absorbent resin was prepared,it not only good for water retention,but also good for release phosphorus after a long run,which was do well in agriculture,even it was do well in environmental protection.

关 键 词： 保水剂 磷尾矿粉 吸水性 保水性 释磷性能

领　　域： [化学工程]