纤维素氨基甲酸酯溶液的流变性能  

Rheological behavior of cellulose carbamate solution

作　　者：哈丽丹.买买提 吾满江.艾力 

机构地区：[1]新疆大学化学化工学院,新疆乌鲁木齐830046 [2]中国科学院新疆理化研究所,新疆乌鲁木齐830011

出　　处：《纺织学报》2009年第1期1-4,共4页Journal of Textile Research

基　　金：科技部"西部开发"重大项目(2004BA901A22)

摘　　要：探讨纤维素氨基甲酸酯(CC)溶液的流变性能及其影响因素。结果表明:含氮量小于3.57%的CC氢氧化钠溶液,在所研究的CC浓度范围内表现为切力变稀型流体,非牛顿指数小于1,且随着CC溶液浓度的增加而减小;表观黏度随剪切速率的增加而降低,随CC溶液浓度的增加而呈指数关系上升,并得到了经验公式;结构黏度指数随CC溶液浓度的增加而缓慢增大,但当CC质量分数超过5.66%后呈非线性迅速增大,溶液流变性变差;纤维素氨基甲酸酯溶液纺前处理温度对其流变性能影响显著,当前处理温度高于15℃,溶液流变性能恶化,可观察到溶液呈凝胶状。The rheological behavior of cellulose carbamate solution and influencing factors were studied. The results showed that cellulose carbamate in sodium hydroxide solution whose nitrogen contents below 3.57 % exhibited shear thinning fluid and its non-Newtonian index less than 1 and these values decreased as the content of CC increased ;The index of apparent viscosity was increased as shearing rate increased , and appeared exponential hypotaxis, and experiential formula was obtained; The index of structural viscosity increased slowly as the content of CC increased, and appeared non-linearity increased as the content of CC increased, the rheological behavior became worse as the content of CC was over 5.66%; The pri-spinning temperature of the CC solmions had significant impact on the rheological behavior and it became worse when the temperature was 15 ℃ ; the rheological behavior of this solution also turned worse when it was in gel state.

关 键 词：纤维素氨基甲酸酯 溶液 流变性能 非牛顿指数 表观黏度 

分 类 号：TQ341.9[化学工程—化纤工业]