低成本复合高吸水性树脂的工业化研究  

Study on the Industrialization of a Low Cost Superabsorbent Composite

作　　者：翟乃华[1,2] 王文波[1] 郑易安[1] 王爱勤[1] 

机构地区：[1]中国科学院兰州化学物理研究所,甘肃兰州730000 [2]中国科学院研究生院,北京100049

出　　处：《精细化工》2011年第8期818-821,共4页Fine Chemicals

基　　金：国家高技术研究发展计划(863计划)项目(2006AA03Z0454)~~

摘　　要：以丙烯酸为单体,凹凸棒黏土为复合组分,2,2-偶氮二异丁基脒二盐酸盐(V50)/过硫酸钾/抗坏血酸为引发剂,N,N′-亚甲基双丙烯酰胺为交联剂,采用水溶液自由基聚合法,在10 t反应釜内合成了速吸复合高吸水性树脂。结果表明,在w(单体)=42%(即单体质量占加入反应釜中所有物质质量的百分数)、引发温度50℃、w(发泡剂)=0.002%(以单体质量计)和w(交联剂)=0.12%(以单体质量计)的最优反应条件下,复合高吸水性树脂的吸水速率为43 s,2 kPa下吸生理盐水倍率为14.7 g/g。该工艺利用酸碱中和反应热及聚合反应热,可使胶体有效成分质量分数从42%提高到52%,降低了后续工段的蒸气耗量,与传统工艺相比,每生产1 t丙烯酸高吸水树脂总计可降低能耗达164万kJ。A fast swelling superabsorbent composite was prepared in the 10 t reactor by aqueous free-radical polymerization using acrylic acid（AA） as the monomer,attapulgite（APT） as the inorganic nano-scale composite,V50/potassium persulfate（KPS）/ascorbic acid as the initiator and N,N′-methylene-bis-acrylamide（MBA） as the crosslinking agent.The results indicate that the optimum reaction conditions were as follows：mass fraction of monomers of 42%,initiating temperature of 50 ℃,foaming agent mass fraction of 0.002% and MBA mass fraction of 0.12%.Under these optimum reaction conditions,the absorption rate is 43 s in distilled water and the absorption ratio is 14.7 g/g under 2 kPa in physiological saline.By using the heat originated from the acid and alkali neutral reaction and the polymerization reaction,the active ingredient of the superabsorbent was enhanced from 42% to 52%.Compared with traditional technology,this technology can reduce the vapor consumption and save energy of about 1 640 000 kJ/t（acrylic acid-based superabsorbent composite）.

关 键 词：高吸水性树脂 吸水速率 低工艺成本 工业化 丙烯酸系列化学品 

分 类 号：TQ225.131[化学工程—有机化工]