【摘要】 以苯乙烯、丙烯酰胺等为原料,采用乳液聚合工艺制备的阳离子共聚物型有机微粒,可在少量阳离子低分子表面活性剂的基础上,对松香/马来松香/松香甘油酯混合物起到良好的乳化与分散作用,所得胶料在助留剂用量为0.5%~0.7%范围内施胶效果良好,但自留着性有一定局限。有机微粒/阳离子聚酰胺多胺-环氧氯丙烷体系的阳离子微粒乳化中性分散松香胶具有低泡性及良好的自留着性能,在近中性条件下,所得胶料用量在0.5%~0.7%可获得良好的应用效果。更多还原

【Abstract】 Novel cationic copolymer based organic microparticle with excellent dispersing property,storage and organic crystal characteristic were synthesized under optimized experimental conditions principally according to emulsion polymerization mechanism.With low dosage of cationic low-molecular-weight surfactants,the synthetic organic microparticles can have excellent emulsifying and dispersing effect on the rosin/maleic anhydride-fortified-rosin/glycerin-rosin-ester admixture which is an efficient internal sizing agent in the dosage range of 0.5%～0.7% when retention agents are used together.To further improve the sizing efficiency of microparticle-emulsified cationic rosin size,emulsifying and dispersing effect of organic microparticles on rosin/maleic anhydride-fortified-rosin/glycerin-rosin-ester admixture was investigated and low-molecular-weight-surfactant-free system based on organic microparticles and polyaminoamide-epichlorohydrin was successfully established,and the resulting microparticle-emulsified cationic dispersed rosin size was proved to be effective in the dosage range of 0.5% to 0.7% with lower amount of alum and even without the retention aid agents. It should be noted that good emulsifying and dispersing effect was substantially more sensitive to the addition amount of organic microparticles,and the property of the size product can be strikingly improved and enhanced with the increasing amount of organic particles.The microparticle-emulsified cationic neutral dispersed rosin size was proved to be effective in neutral papermaking system with self-retention and low-foaming property.更多还原