瞬间成皂法制备高抗水性AKD乳液

Preparation of High Water-Resistant AKD Emulsion by InstantPreparation Instant Soaping MethodSoaping Method

AKD中碱性施胶剂由于廉价、高效、提高纸张强度及耐久性等优点,一直是造纸行业广泛使用的抗水乳液。本研究采用“瞬间成皂法”制备自乳化型AKD中性施胶剂,研究了在不同反应温度、反应时间、固含量和乳化剂用量及剪切速率条件下对制备的AKD乳液稳定性及抗水性的影响。结果表明:当反应温度75℃、时间9 min、固含量10%、乳化剂用量5%、搅拌速率10,000 r/min时,乳液稳定性及施胶效果最好,Cobb值可以达到17.03 g/m^(2)。

AKD medium alkaline sizing agent has been widely used in the papermaking industry as a water-resistant emulsion thanks to its low cost,high efficiency,and ability to improve paper strength and durability.In this study,self-emulsifying AKD neutral sizing agent was prepared by instant soaping method.The effects of different reaction temperature,reaction time,solid content,emulsifier dosage and stirring rate on the stability and water resistance of the prepared emulsion were studied.The results showed that when the reaction temperature was 75℃,the reaction time was 9 min,the solid content was 10%,the amount of emulsifier was 5%,and the stirring rate was 10000 r/min,the emulsion stability and sizing effect were the best,and the Cobb value could reach 17.03 g/m^(2).