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以氢化松香(HR)作为增黏树脂,采用细乳液聚合法制备了HR/丙烯酸酯复合细乳液。探讨了乳化剂、HR等因素对该乳液及其胶膜性能的影响。结果表明:与常规乳液聚合相比,细乳液聚合制得的乳液粒径更小、粒径分布更窄、单体转化率更高、凝聚率更低、Zeta电位更高且体系更稳定;HR能有效改善PSA(压敏胶)的粘接性能,并且当w(HR)=5%时,PSA的初粘力(9#钢球)、180°剥离强度(11.2 N/25 mm)和持粘力(47 min)相对较好。
Hydrogenated rosin (HR) was used as tackifying resin to prepare HR / acrylate composite miniemulsion by miniemulsion polymerization. The effects of emulsifier, HR and other factors on the performance of the emulsion and its film were discussed. The results showed that the emulsion prepared by miniemulsion polymerization had smaller particle size, narrower particle size distribution, higher monomer conversion rate, lower aggregation rate, higher Zeta potential and more stable system than the conventional emulsion polymerization. HR Can effectively improve the bonding performance of PSA (PSA), and the initial tack (9 # ball), 180 ° peel strength (11.2 N / 25 mm) Viscosity (47 min) is relatively good.