KLPAAM复合高吸水树脂保水性能研究  

Water Retention Properties of KLPAAM Superabsorbents Composites

作　　者：谢建军[1] 何新建[1] 张绘营[1] 李晟[1] 吴义强[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004

出　　处：《湘潭大学自然科学学报》2011年第3期100-105,共6页Natural Science Journal of Xiangtan University

基　　金：国家林业公益性行业科研专项(201104004);湖南省自然科学重点基金资助项目(07JJ3109);国家留学回国人员基金项目

摘　　要：采用自制高岭土/木质素磺酸钠接枝丙烯酸-丙烯酰胺复合高吸水树脂(KLPAAM),研究了不同KLPAAM树脂用量、不同肥料溶液(单一与混合溶液)对不同土壤质地保水率、含水率的影响.自然蒸发条件下,KLPAAM复合高吸水树脂施用量为0.5%时,各种肥料溶液中泥土、泥土/河砂=1/1和河砂三种质地土壤保水率下降明显减慢,土壤保水性能提高,10%尿素、10%尿素/0.1%磷酸二氢钠混合溶液下降最慢,即保水效果最好,而0.5%氯化钾、0.1%磷酸二氢钠/0.5%氯化钾混合溶液下降最快,即保水效果最差.KLPAAM复合高吸水树脂更适合于含非电解质肥料溶液的砂质土壤中施用.Self-made kaolin/sodium lignosulfonate graft acrylic acid and acrylamide superabsorbent composite（KLPAAM） are used to measure the effect of the different using amount of KLPAAM resin,different fertilizer solutions（single or mixing salt solutions） on the water-retention ratios and the moisture contents in different characteristic soils.Under the natural evaporating condition,when the mass concentration of KLPAAM superabsorbent composite in different characteristic soils is 0.5%,the decreasing soil water retention ratios of three different characteristic soils such as soil,river sand and soil/river sand=1/1 are obviously slower and the water retention property is raised than that without KLPAAM resin.Among all tested fertilizer solutions,the decrease of the water retention ratios in different characteristic soils for 10% urea solution,and 10% urea/0.1% NaH2PO4 mixing solution is the slowest,that is,the water retention property is the best,while that for 0.5% KCl,0.1% NaH2PO4/0.5%KCl mixing resolution is the most fast,that is,the water retention property is the worst KLPAAM superabsorbent composite is still more fit for the sand-containing soil with the non-electrolyte fertilizer solutions.

关 键 词：复合高吸水树脂 木质素 丙烯酸 丙烯酰胺 保水性能 接枝共聚 

分 类 号：TQ028.14[化学工程]