一种可吸收数百倍，甚至于千倍于本身重量的水，且可保持吸水后不流动而呈膨胀状态的高分子。
A polymer that absorbs hundreds of times, or even thousands of times heavier than its own weight, and keeps water absorbing and expanding.
应用
application
Application
Application
1)医疗卫生：卫生巾，尿垫，尿裤，医用床垫，吸水纸，缓释性药物，膏，水袋等。
1) health: sanitary napkin pad, diaper, medical mattress, absorbent paper, sustained-release drug, cream, bag etc..
2)农业和园林：土壤保水，种子包衣，拌种育苗。
2) agricultural and Garden: soil water, seed, seed seedling.
3)工业：止水膨胀橡胶，吸水防污涂料，防结露涂料，防静电涂料，油田堵水及油水分离，光缆
3) industry: water expansion rubber water, antifouling coatings, antifogging coating, anti-static coating, water plugging and oil-water separation, optical cable
用阻胶带及缆膏，混凝土的养护等。
Use of tape and cable paste, the maintenance of concrete and so on.
4)食品工业用吸水剂，水果和蔬菜的保鲜剂。
4) water absorbent in food industry, fruit and vegetable preservative.
工艺流程
Technological process
Process flow
Process flow
目前商业生产的制程以共聚物化学法为主
At present, the process of commercial production is mainly based on copolymer chemistry.
流程：丙烯酸和氢氧化钠混合，在碱性环境下进行利用自由基引发剂聚合来生成聚丙烯酸钠（SAP）。
Process: mixture of acrylic acid and sodium hydroxide, and polymerization of sodium polyacrylate (SAP) in alkaline environment by polymerization of free radical initiator.
操作流程：中和流程、交联剂预混、聚合反应、后期处理
Operation process: neutralization process, crosslinking agent premixing, polymerization, post processing.
中和流程：将丙烯酸、氢氧化钠等原料进行中和，并控制温度不超过45℃。
Neutralization process: neutralize acrylic acid, sodium hydroxide and other raw materials, and control the temperature no more than 45 degrees.
交联剂预混：将中和液放入预混釜中，加入阻聚剂保持温度在38~45℃
Crosslinker premixed: put neutralization liquid into premixed kettle, add inhibitor to keep temperature at 38~45 C.
聚合反应工段：控制温度在40~42℃，加入引发剂。
Polymerization process: control temperature at 40~42 C, add initiator.
