高固含量聚丙烯酸乳液的合成与应用  

The Synthesis of the Polyacrylic Emulsion with High Solid Content

作　　者：陈华 闵峰 CHEN Hua;MIN Feng(Buckman Laboratories(Shanghai)Chemicals Co.,Ltd.,Shanghai 201707,China)

机构地区：[1]巴克曼实验室化工(上海)有限公司,上海201707

出　　处：《皮革与化工》2024年第2期22-25,29,共5页Leather And Chemicals

摘　　要：探索合成固含量在50%以上的丙烯酸酯乳液,以甲基丙烯酸甲酯、丙烯酸乙酯、丙烯酸、苯乙烯、丙烯腈,丙烯酸丁酯、丙烯酸异辛酯等为混合单体,以K_(12)和S-90作为复合乳化剂,以过硫酸铵为引发剂制取聚丙烯酸酯乳液。通过改变预乳化的水量及控制条件、引发剂的用量、固含量的高低等条件进行多组实验,以探索各影响因素对乳液性能的影响,并筛选其最佳合成条件。实验还通过在乳液聚合完成之后,通过加入氧化还原体系引发剂,来处理乳液中的残留单体,筛选出各体系下氧化剂和还原剂的最佳用量比。实验发现采用还原剂FF6M和70%叔丁基过氧化氢氧化还原体系,当FF6M占乳液质量的比值约为0.2%,70%叔丁基过氧化氢占乳液质量的比值约为0.2%时,效果最佳。Acrylic adhesive with solid content over 50% was synthesized by using MMA,EA,AA,ST,AN,BA,2-Ethylhexyl acrylate as mixed monomers,K_(12) and S-90 as complex emulsifier,ammonium persulfate as initiator.By changing the amount of water and control conditions of pre-emulsification,the amount of initiator,the level of solid content and other conditions,the paper explored the influence of various factors on the properties of emulsion,and screened the best synthesis conditions.After the emulsion polymerization,the experiment also added redox system initiator to deal with the residual monomer of the acrylic emulsion,and screened out the best use ratio of oxidizing and reducing agents in the various systems.Taking FF6M and TBHP-70 oxidation and reduction system,the best results were obtained when the ratio of FF6M to the emulsion mass was about 0.2% and that of 70%tert-butylhydrogen peroxide was about 0.2%.

关 键 词：乳液聚合 聚丙烯酸酯乳液 氧化还原 

分 类 号：TQ433.436[化学工程]