核壳型醋丙乳液高速卷烟接嘴胶的合成

Synthesis of Core-shell Vinyl Acetate-acrylate Emulsion of the High-speed Cigarette Adhesives for Filter Tipping

以醋酸乙烯酯(VAC)为硬单体,丙烯酸丁酯(BA)和丙烯酸异辛酯(2-EHA)为软单体,丙烯酸(AA)为交联单体,聚乙烯醇1788为保护胶体,脂肪醇聚氧乙烯醚(AEO-9)和十二烷基硫酸钠(SDS)为乳化剂,过硫酸钾(K_2S_2O_8)为引发剂,合成了硬核软壳型醋丙乳液胶黏剂.设计了核壳胶粒结构,研究了软硬单体、保护胶体、复配乳化剂对胶黏剂初粘性、粘度、胶粒大小及分布的影响.结果表明:硬核软壳型醋丙乳液胶黏剂初粘性佳,粘度小,胶粒粒径分布窄,能满足打孔水松纸高速卷烟接嘴胶的要求.

With vinyl acetate（VAC）as the hard monomer,butyl acrylate（BA）and 2-Ethylhexyl acrylate（2-EHA）as the soft monomer,acrylic acid（AA）as the crosslinking monomer,polyvinyl alcohol（PVA-1788）as the protective colloid,alcohol polyoxyethylene ether（AEO-9）and sodium dodecyl sulfate（SDS）as the emulsifier,potassium persulfate（K2S2O8）as the initiator,hardcore soft shell emulsion was synthesized.The core-shell particle structure was designed.The effect of soft and hard monomer,protective colloid,emulsifiers on tack,viscosity and size and distribution of particles of adhesives were studied.The results have shown that the hardcore softshell vinyl acetate-acrylate emulsion adhesives have good tack,low viscosity and narrow distribution of particle size.It can meet the requirements of high-speed cigarette filter tipping for punching water-paper.