以水溶液聚合的方式研制出了PAMN保水剂,并研究了中和度、温度、压力、pH值对其吸水性能、保水性能的影响,从理论上初步解释了PAMN保水剂的吸水、保水机理.实验结果表明:PAMN保水剂的吸水倍比达1200倍以上,PAMN保水剂具有很强的保水能力,在常温相同条件下其蒸发量为普通水的1/8～1/6. PAMN water-retaining agent was prepared by polymerization in aqueous solution. The effects of neutralization degree, temperature, pressure and pH value on the water absorption and water retention properties of PAMN were studied. The mechanism of water absorption and water retention of PAMN water-retaining agent was preliminarily explained theoretically. The experimental results show that the water absorption ratio of PAMN super absorbent polymer is more than 1200 times, PAMN super absorbent polymer has a strong water retention capacity, its evaporation rate is 1 / 8-1 / 6 of ordinary water under the same conditions at room temperature.