以甲基丙烯酸月桂酯(LMA)和丙烯酸(AA)为共聚单体,使用过硫酸铵(APS)和亚硫酸氢钠组成氧化还原引发体系,N,N-亚甲基双丙烯酰胺(BIS)为交联剂,碳酸钙(CaCO_3)为致孔剂,采用溶液聚合的方法,制备了多孔吸水树脂。利用热失重分析(TGA)、扫描电镜(SEM)对该树脂进行表征,发现LMA含量越多热稳定性越差,CaCO_3含量越多,孔洞结构越容易塌陷。当单体摩尔比为nLMA/nAA=1/16,nCaCO_3/nAA=1/2时的多孔树脂吸水倍率最大。 The redox initiator system, N, N-methylene bisacrylamide (BIS) was synthesized using lauryl methacrylate (LMA) and acrylic acid (AA) as comonomers with ammonium persulfate (APS) and sodium bisulfite. As a cross-linking agent, calcium carbonate (CaCO_3) as pore-forming agent, using the solution polymerization method to prepare a porous absorbent resin. The resin was characterized by thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). It was found that the more the LMA content was, the worse the thermal stability was. The more the content of CaCO 3 was, the easier the pore structure collapsed. When the molar ratio of monomer is nLMA / nAA = 1/16, the absorbency of porous resin with nCaCO_3 / nAA = 1/2 is the highest.