聚丙烯酸钠农用高吸水树脂的辐射制备与性能测试  

THE PREPARATION OF SODIUM ACRYLATE HIGH WATER-ABSORBING RESIN FOR AGRICULTURE BY RADIATION POLYMERIZATION AND ITS PROPERTIES

作　　者：辜英杰[1] 邹伟权[2] 闫世平[1] 魏强[1] 郑家概[1] 牟德海[1] 

机构地区：[1]广东省测试分析研究所广东省化学危害应急检测技术重点实验室,广东广州510070 [2]华南农业大学广东省辐照技术开发中心,广东广州510640

出　　处：《核农学报》2005年第2期113-117,共5页Journal of Nuclear Agricultural Sciences

基　　金：广东省科技计划农业攻关项目 (2 0 0 2C2 0 80 6)

摘　　要：本文提出了一种特殊的丙烯酸 (钠 )水溶液辐射聚合方法制备高吸水树脂 :丙烯酸水溶液与有机溶剂形成稳定的O W乳化体系 ,将该乳化体系按常规方式进行辐射聚合。小试结果表明 ,该聚合方式具有工艺简单、生产成本低、利于规模化生产等优点 ,克服了单纯水溶液聚合反应热难以排除、干燥十分困难的缺点。在常温常压下 ,该树脂可吸蒸馏水 1 2 0 0ml g,吸自来水 5 60ml g,吸 0 9%NaCl水溶液 1 2 0ml g ;且吸液速度快 ,1min内可达饱和吸水量 ;压力及常温下常压且保水性能优良 ;完全能够满足农业抗旱保水的需要。A new method for preparation of high water-absorbing resin was described. The aqueous solution of sodium acrylate was dispersed in organic solvent to form an O/W emulsification system, which was then polymerized by γ-ray irradiation. The method was of simple process,of low production cost and easy for commercial production; and was proved to be feasible for prepariation of high water-absorbing resin by using existing 60 Co γ-ray radiation system.The capacity of the water-absorption and water-holding power of the resin under various conditions were determined,and the results showed that the water absorbed by the resin was 1200ml/g in distilled water,560ml/g in the tap water,120ml/g in the water with 0.9% NaCl. The water absorption of the resin was rapid with the saturated absorption in 1 min. The water-holding capability was excellent under pressure.

关 键 词：高吸水树脂 聚丙烯酸钠 性能测试 制备 NACL水溶液 农用 乳化体系 规模化生产 水溶液聚合 有机溶剂 聚合方法 辐射聚合 聚合方式 保水性能 抗旱保水 成本低 反应热 蒸馏水 自来水 吸水量 常温 常压 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]