鞋材用聚丙烯酸酯乳液及其醇溶性港宝的研制

Prepartion of Acrylate Emulsion and Alcohol-soluble Hard Pad for Shoes Material

为了适应环保和市场的要求,筛选出聚合物性能优良的醇溶性单体,采用预乳化乳液聚合法合成了鞋材用聚丙烯酸酯乳液,研制开发了新型鞋材醇溶性港宝胶片。讨论了醇溶性单体用量、引发剂加入工艺对乳液聚合物性能的影响,分析了填料种类对胶片性能的影响。通过DSC、GPC对乳液聚合物进行了表征。结果表明单体组成质量比为MMA∶EA∶MAA=45∶40∶15时,所得乳液聚合物能满足使用性能要求;种子引发剂加入量控制在单体量的0.3%,而总的引发剂用量在0.8%较适宜;以滑石粉作填料,可克服工作液增稠严重的缺陷,工作液的配比按胶乳∶滑石粉∶水质量比200∶80∶60能得到理想港宝胶片。

To meet the needs of environmental protection and marketing, alcohol-soluble monomer was screened out for the synthesis of acrylate emulsion by pre-emulsificationon emulsion polymerization, and alcohol-soluble pad for shoes material was then developed. The influence of monomer content and the additive method of initiator on the property of emulsion polymer was discussed, and the influence of the filler kind on the property of shoes pad was analysed. The structure of the polymer was characterized by means of instruments such as DSC and GPC. The results showed the optimum condition and technology were that MMA∶EA∶MAA=45∶40∶15, the content of total initiator was 0.8%, and the content of seed initiator was 0.3%, emulsion∶talcum powder∶water=200∶80∶60, and the defect of too sticky of working liquid could be overcame by using talcum powder as filling agent.