纳米纤维素/聚酰亚胺气凝胶制备与性能研究  

Preparation and properties of nanocellulose/poly imide aerogels

作　　者：王子扬 杨雪[1] 刘玮[1] 刘丽芳[2] 马晓飞 张丽 WANG Ziyang;YANG Xue;LIU Wei;LIU Lifang;MA Xiaofei;ZHANG Li(College of Textile and Clothing,Shanghai University of Engineering Science,Shanghai 201620,China;College of Textile,Donghua University,Shanghai 201620,China;Anhui Sanbao Cotton Spinning Knitting Investment Co.,Ltd,Fuyang 236501,China)

机构地区：[1]上海工程技术大学纺织服装学院,上海201620 [2]东华大学纺织学院,上海201620 [3]安徽三宝棉纺针织投资有限公司,安徽阜阳236501

出　　处：《功能材料》2022年第8期8116-8121,共6页Journal of Functional Materials

基　　金：国家自然科学基金项目(51903152);上海市科学技术委员会科研计划项目(19YF1417900)。

摘　　要：纳米纤维素气凝胶由于其良好的生物相容性、可再生性、可降解性以及较高的孔隙率等优异性能,在建筑隔热领域有着十分广阔的应用前景。为了更好地提升纳米纤维素气凝胶的保温隔热性能和力学性能,引入聚酰亚胺,制备了一种具有规则孔隙结构的复合纳米纤维素气凝胶。通过SEM、导热系数测试仪、红外成像仪等测试方法对其结构和性能进行表征。结果表明,当CNF∶PI的质量比为1∶1时,复合气凝胶的结构规则,孔径较小,在15~18μm左右,密度低至0.0413 g/cm^(3),压缩强度可达0.33 MPa,导热系数低至0.03159 W/(m·K),具有最优异的综合性能。Due to their excellent biocompatibility,renewability,degradability and high porosity,nanocellulose aerogels have broad application prospects in the field of building insulation.In order to better enhance the thermal insulation and mechanical properties of nanocellulose aerogels,a composite nanocellulose aerogel with regular pore structure was prepared by introducing polyimide.The structure and properties of the composite aerogels were fully characterized by SEM,thermal conductivity tester and infrared imager and other testing meters.The results showed that when the mass ratio of CNF∶PI was 1∶1,the structure and pore size of the composite aerogels were the smallest,and the diameter of the composite aerogels was 15-18μm,the density is as low as 0.0413 g/cm^( 3),the compressive strength is up to 0.33 MPa,and the thermal conductivity is as low as 0.03159 W/(m·K),showing the most excellent comprehensive performance.

关 键 词：纳米纤维素 聚酰亚胺 气凝胶 力学性能 隔热性能 

分 类 号：TQ352[化学工程]