文献类型：期刊文献

中文题名：纤维素纳米晶须复合水性树脂体系的流变行为与性能

英文题名：Rheological Behavior and Properties of CNW Based Waterborne Resin Composite Dispersion

作者：吴国民[1,2,3,4,5] 刘贵锋[1,2,3,4,5] 陈健[1,2,3,4] 霍淑平[1,2,3,4] 孔振武[1,2,3,4,5]

第一作者：吴国民

机构：[1]中国林业科学研究院林产化学工业研究所;[2]江苏省生物质能源与材料重点实验室;[3]生物质化学利用国家工程实验室;[4]国家林业局林产化学工程重点开放性实验室;[5]中国林业科学研究院林业新技术研究所

年份：2015

卷号：45

期号：6

起止页码：1-6

中文期刊名：涂料工业

外文期刊名：Paint & Coatings Industry

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：林业公益性行业科研专项(201504603);国家自然科学基金(31100428)

语种：中文

中文关键词：纤维素纳米晶须;水性树脂;复合;流变特性

外文关键词：cellulose nanowhisker; waterborne resin; composite; rheological property

分类号：TQ637.81

摘要：利用纤维素纳米晶须(CNW)的水可分散性,分别将CNW水悬浮液均匀分散在水性环氧树脂基多元醇和水性萜烯基环氧树脂分散体中。以旋转流变法分析了CNW对水性树脂体系流变行为的影响,结果表明:复合体系的黏度都随CNW添加量的增加而增大。用粒径分析仪观察了CNW对复合体系的粒径及其分布的影响,加入CNW后分布曲线出现了CNW粒径峰,粒径峰面积的变化与CNW的加入量成正比。复合体系的原子力显微镜分析表明:CNW能均匀无序地分布在水性树脂体系中。复合产物的拉伸测试表明,复合涂膜的拉伸模量和拉伸强度都随着CNW添加量的增加而显著提高,断裂伸长率随CNW添加量的增加而下降。接触角测定表明,添加CNW可以提高复合涂膜表面的疏水性。
A cellulose nanowhisker （CNW） with good aqueous dispersibility was dispersed in waterborne polyol dispersion and waterborne epoxy resin dispersion to prepare a polymer nanocomposite. The effect of CNW on theological behavior of the waterborne resin dispersion was characterized by rotary rheometer. The result showed that the viscosity of the composite system increased with the increase of CNW dosage. The laser particle size analyzer was used to record the particle size distribution of the composite system, indicating that the addition of the CNW could enable a new particle peak in the particle size distribution curve, and the area of the new peak varied directly with the amount of CNW. The atomic force microscope analysis showed that CNW could be dispersed in the waterborne resin dispersions evenly and disorderly. The tensile test showed that Yong＇s modulus and tensile strength of the nanocomposite were reinforced by the addition of CNW. However, the elongation at break of the nanocomposite films decreased with the increase of CNW dosage. Meanwhile, the contact angle analysis showed that the addition of CNW could improve the hydrophobic property of the nanocomposite film.