Thermal Insulation Properties of Microfibrillated Cellulose Aerogel  

作　　者：YANG Simin LUO Xinrong AN Yuying TU Lexi SHEN Hua 杨思敏;骆鑫荣;安昱盈;屠乐希;沈华(College of Textiles,Donghua University,Shanghai 201620,China;Chinatesta Textile Testing&Certification Services,Shaoxing 312071,China)

机构地区：[1]College of Textiles,Donghua University,Shanghai 201620,China [2]Chinatesta Textile Testing&Certification Services,Shaoxing 312071,China

出　　处：《Journal of Donghua University(English Edition)》2021年第2期106-113,共8页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.51903034);Fundamental Research Funds for the Central Universities,China(No.2232019D3-12)。

摘　　要：Microfibrillated cellulose(MFC)aerogels are bio-based materials with high thermal resistance.In this study,MFC aerogels and MFC-kapok composite aerogels were prepared.A series of experiments were carried out in a climate chamber to study the influence of MFC concentration,the temperature gradient,testing methods and introduction of kapok fibers on the thermal insulation properties of aerogels.The results suggested that the density of MFC aerogels was less than 10 mg/cm3 and the porosity was higher than 99%.Besides,the minimum thermal conductivity of MFC aerogels was 0.0357 W·m-1·K-1 observed at 0.8%MFC aerogels.The minimum thermal conductivity of MFC-kapok composite aerogels was 0.0382 W·m-1·K-1 when the ratio of MFC to kapok was 2∶6.

关 键 词：microfibrillated cellulose(MFC)aerogel FREEZE-DRYING thermal resistance KAPOK thermal conductivity 

分 类 号：TS102.1[轻工技术与工程—纺织工程]