含萜烯树脂丙烯酸酯乳液型压敏胶的制备与性能研究

以混合丙烯酸酯为共聚单体,萜烯树脂为增黏树脂,过硫酸钾(KPS)为引发剂,十二烷基硫酸钠(SDS)、烷基酚聚氧乙烯醚(OP-10)和十二烷基二苯醚二磺酸钠盐(2A1)为乳化剂,采用预乳化半连续乳液聚合法制备压敏胶(PSA)用丙烯酸酯乳液。研究结果表明:当m(OP-10)∶m(SDS)∶m(2A1)=16.5∶3.6∶7.9、w(KPS)=0.5%、单体滴加时间为3.5 h和反应温度为80～82℃时,含萜烯树脂PSA的综合性能相对最好,其初粘力(19#钢球)和剥离强度(5.8 N/25 mm)优于不含萜烯树脂PSA,但前者的持粘力(22 h)低于后者。

Study on preparation and properties of acrylate emulsion PSA with terpene resin

With mixed acrylate as comonomers,terpene resin as tackifying resin,potassium persulphate(KPS) as initiator,sodium dodecyl sulfate(SDS),alkylphenol ethoxylates(OP-10) and dodecyl-benzenesulfonic acid sodium salt(2A1) as emulsifiers,an acrylate emulsion for pressure-sensitive adhesive(PSA) was prepared by pre-emulsified semi-continuous emulsion polymerization.The research results showed that the PSA with terpene resin had reversely best combination property because the initial tack(19# ball) and peeling strength(5.8 N/25 mm) of PSA with terpene resin were better than those of PSA without terpene resin,but the former hold tack(22 h) was less than the latter hold tack when mass ratio of m(OP-10)∶m(SDS)∶m(2A1) was 16.5∶3.6∶7.9,mass fraction of KPS was 0.5%,monomers dropping time and reaction temperature were 3.5 h and 80-82 ℃ respectively.