无皂苯丙聚合物/AKD复合乳液的制备及施胶性能研究  

Preparation of a Soap-free Styrene Acrylate Copolymer and AKD Composite Emulsion as a Sizing Agent

作　　者：张勇[1] 李小瑞[1] 费贵强 王海花[1] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《中国造纸学报》2009年第2期60-63,共4页Transactions of China Pulp and Paper

基　　金：国家自然科学基金项目(5047304950673055)

摘　　要：研究了无皂苯丙聚合物的制备及其乳化AKD所得复合乳液的施胶性能,该复合乳液具有良好的分散性和稳定性。在采用阳离子淀粉和阳离子聚丙烯酰胺为双元助留剂、m(AKD)∶m(无皂苯丙聚合物)=4.6∶1、105℃下熟化10 min、无皂苯丙聚合物/AKD复合乳液用量为0.2%～0.3%时,无论对草木混合浆还是木浆进行浆内施胶,施胶效果都很好;采用碳酸钙作为填料,对无皂苯丙聚合物/AKD复合乳液的施胶效果影响甚微。A soap-free styrene and acrylates copolymer emulsion was prepared and used for emulsifying alkyl ketene dimmer （AKD）, this composite emulsion was used as the neutral sizing agent with the better sizing efficiency and storage stability. In the presence of cationic starch （CS） and cationic polyacrylamide （CPAM） as dual retention agent, when weight ratio of m （AKD）/m （soap-free styrene acrylate copolymeric emulsion） = 4.6/1, curing time 10 minutes at the temperature of 105℃, the better sizing degree can be achieved in the case of mixed straw and wood stock or wood stock with adding 0. 2% - 0. 3% of the composite emulsion based on the dried pulp, meanwhile this sizing agent of composite emulsion can effectively disperse the un-reacted AKD into water and this composite emulsion maintains stable condition. There is little effect on sizing efficiency when calcium carbonate is used as the filler and the composite emulsion is used as sizing agent.

关 键 词：无皂苯阿聚合物 分散性 稳定件 施胶效果 

分 类 号：TS727.5[轻工技术与工程—制浆造纸工程]