一种新型保水剂的制备及对肥料吸附性能研究

Preparation and Fertilizers Adsorption Capacity of A New Type of Water Retaining Agent

以膨润土和丙烯酸为原料,N,N′-亚甲基双丙烯酰胺为交联剂,过硫酸钾为引发剂,在微波辐射下制备了一种新型保水剂,其吸蒸馏水倍率为890g/g,吸0.9%NaCl溶液倍率为95g/g,并用红外光谱、电镜扫描对产物进行了表征。同时,研究了几种肥料对该保水剂吸水倍率的影响及其对肥料的吸附规律。结果表明,在一定范围内,保水剂的吸水倍率随着肥料体积质量的增加而降低,保水剂对肥料的吸附量随体积质量的增大而增加。

A new type of water retaining agent was prepared by copolymerization under microwave radiation,using bentonite and acrylic acid as raw material,N,N′-methylene-bisacrylamide as a crosslinker,and potassium persulphate as initiator.The water absorbency in distilled water and normal saline was 890 g/g and 95 g/g.This superabsorbent was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy.The effects of fertilizers on water absorbent rate of superabsorbent resin and their adsorption were investigated.The results showed that the water absorbent ability decreased obviously along with the increase of concentrations of various fertilizers,and the amounts of absorbed fertilizers increased with the increase of concentrations of fertilizers.