捏合机辅助干法制备氨基甲酸酯淀粉及其在高支毛纱上浆中的应用  

Dry preparation of carbamate starch assisted by kneader and its application in sizing of high count wool yarn

作　　者：李颖 耿亮[2] 程飞[1] 朱谱新[1] LI Ying;GENG Liang;CHENG Fei;ZHU Puxin(Textile Institute,Sichuan University,Chengdu,Sichuan 610065,China;Textile Engineering School,Chengdu Textile College,Chengdu,Sichuang 611731,China)

机构地区：[1]四川大学纺织研究所,四川成都610065 [2]成都纺织高等专科学校纺织工程学院,四川成都611731

出　　处：《毛纺科技》2021年第8期20-25,共6页Wool Textile Journal

基　　金：国家自然科学基金项目(51603134);四川大学研究生资助项目(2017KCSJ036)。

摘　　要：为了使用干法改性淀粉得到适用于高支毛纱上浆用的氨基甲酸酯淀粉浆料,针对烘箱法反应效率不够理想的问题,用尿素和玉米淀粉、加入氯化铵催化剂,利用捏合机制备了反应效率较高的氨基甲酸酯淀粉。对催化剂、反应温度、反应时间、尿素用量等进行了单因素分析,通过正交试验设计得出影响因素的主次顺序。通过红外光谱测试、扫描电镜和固体核磁碳谱分析,确定酯化反应的有效进行及改性前后淀粉结构变化。对高支澳毛单纱进行上浆,对浆纱前后纱线性能进行测试分析,得出较低取代度的氨基甲酸酯淀粉对于高支毛纱上浆是可行的。In order to obtain carbamate starch size suitable for high count yarn sizing by using dry modification,and to solve the problem of low reaction efficiency of oven method,carbamate starch with higher reaction efficiency was prepared by using urea and corn starch,ammonium chloride catalyst and kneading machine.The single factor analysis on catalyst,reaction temperature,reaction time and urea dosage was carried out,and the order of influencing factors was obtained through orthogonal experiment design.The effect of esterification reaction and the change of starch structure before and after modification were analyzed by infrared test,scanning electron microscope analysis and solid state 13 C NMR spectrum analysis.By sizing high count pure Australian wool single yarn and analyzing the yarn properties before and after sizing,it is concluded that carbamate starch with lower substitution degree is feasible for sizing high count wool yarn.

关 键 词：干法 氨基甲酸酯淀粉 捏合机 上浆 

分 类 号：TS190.3[轻工技术与工程—纺织化学与染整工程]