化学沉淀法合成甲基丙烯酸锌纳米晶粉体

Synthesis of Zinc Methacrylate Nanopowders by Precipitation Method

以甲基丙烯酸、氢氧化钠、氯化锌、氨水等为主要原料,采用化学沉淀法在室温下合成了晶粒尺寸只有几十纳米的甲基丙烯酸锌粉体(ZMA);以FTIR,XRD,NMR,TEM等分析方法对粉体进行了表征,确认了产物的结构及其所属晶系;将合成产物与美国产SR-634甲基丙烯酸锌进行了性能比较,合成产物的平均粒径为40.6 nm,接近于后者的31.4 nm;讨论了氯化锌溶液的滴加速率、ZMA浓度、搅拌速率等因素对合成的甲基丙烯酸锌粉体粒径的影响;得到最优化实验条件为:氯化锌溶液的滴加速率0.5 mL/m in,ZMA浓度4.2 mol/L,搅拌速率100 r/m in,在此条件下,甲基丙烯酸锌收率达80.4%。

Zinc methacrylate nanopowder with average particle size of 40. 6 nm was successfully designed and synthesized by precipitation method with methacrylic acid, sodium hydroxide and zinc chloride at room temperature . Its structure was characterized by FTIR, XRD, NMR and TEM, and its properties were compared with those of American SR -634 zinc methacrylate nanopowder. Various factors influencing the particle size of the methacrylate nanopowder were discussed, such as the feeding rate, stirring rate and solution concentration, and the best experimental conditions were obtained. Yield of zinc methacrylate was 80. 4%.