封闭型水性聚氨酯纸张表面增强剂的制备及应用  

Preparation and application of sealed waterborne polyurethane surface sizing agent

作　　者：赵艳娜[1] 刘雅俊[1] 杜经武[1] 张云飞[1] ZHAO Yan-na liu Ya-jun DU Jing-wu ZHANG Yun-fei(College of Chemistry and Chemical Engineering. Key Laboratory of Auxiliary Chemistry ＆ Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science Technology, Xi＇an 710021, China)

机构地区：[1]陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2017年第1期92-96,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅工业科技攻关计划项目(2016GY-146);陕西省重点实验室科研计划项目(2013SZS10-K02);陕西省大学生创新创业训练计划项目(1217);西安市科技局科技计划项目(CXY1513(4));陕西科技大学学术骨干培育计划项目(XSGP201211)

摘　　要：以甲乙酮肟为封闭剂,以二羟甲基丙酸为亲水性扩链剂制备了封闭型水性聚氨酯纸张表面施胶剂.利用红外光谱(IR)对水性聚氨酯进行结构表征,通过透射电子显微镜和动态激光光散射仪测定封闭前后乳胶粒子的粒径和形貌.考察了甲乙酮肟用量对施胶效果的影响,应用结果表明以质量分数为1.5%的封闭型水性聚氨酯乳液进行表面施胶,纸张施胶度达42.0s,抗张指数达到50.1N·m·g^(-1),耐折度达22次,烘干时间以12min为宜.A kind of blocked waterborne polyurethane was prepared using methyl ethyl ketoxime as blocked reagent and 2,2-Bis （hydroxymethyl） propionic acid as hydrophilic chain extender. The structure of polyurethane was charactered by FT-IR. The FT-IR confirmed that the -N=C=0 groups were blocked by methyl ethyl ketoxime. Moreover,the applied properties of the paper were measured as follows when the dosage of the sizing agent was 1. 5 % ： paper tensile strength was 50. 1 N ·m· g-1 ,the sizing value of paper was 37. 0 s and folding endurance was 22 times.

关 键 词：甲乙酮肟 表面施胶剂 水性聚氨酯 

分 类 号：TS727.5[轻工技术与工程—制浆造纸工程]