采用溶剂热法,在密闭容器内,以丙酮-水为分散介质,过硫酸钾为引发剂引发甲基丙烯酸甲酯(MM A)和苯乙烯(S t)共聚,制得了粒径约为31nm的均分散无皂纳米胶乳粒子。探讨了丙酮、引发剂用量、单体比和温度对粒子粒径、均分散性和乳液稳定性的影响。实验结果表明,随着丙酮的增加和MM A比例的升高,粒径减小,均分散性下降;随着温度的升高和引发剂浓度的增大,粒径先减小后增大,均分散性先下降后升高。 Solvent-heat method was used to copolymerize methyl methacrylate (MM A) and styrene (S t) in a closed vessel with acetone-water as dispersion medium and potassium persulfate as initiator, and the particle size was about 31nm Of homogenized soap-free nano-latex particles. The effects of acetone, initiator, monomer ratio and temperature on particle size, dispersibility and emulsion stability were discussed. The experimental results show that with the increase of acetone and the increase of MM A ratio, the particle size decreases and the average dispersibility decreases. With the increase of temperature and initiator concentration, the particle size first decreases and then increases, Dispersibility first decreased and then increased.