间隔层纤维纸微观结构及热物理性质研究  

Study on the Microstructures and Thermophysical Properties of the Spacer Fibre Papers

作　　者：马晓勇 陈叔平[1] 张亚娟 于洋[3] 于海峰 王波 MA Xiaoyong;CHEN Shuping;ZHANG Yajuan;YU Yang;YU Haifeng;WANG Bo(School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou,Gansu Province,730050;School of Chemical Engineering,Lanzhou City University,Lanzhou,Gansu Province,730070;School of Energy and Power Engineering,Xian Jiaotong University,Xi’an,Shaanxi Province,710049)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]兰州城市学院化学工程学院,甘肃兰州730070 [3]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《中国造纸》2025年第3期60-69,共10页China Pulp & Paper

基　　金：甘肃省科技计划资助(22ZD6GA026)。

摘　　要：纤维纸因其材料轻质、厚度较小及低导热系数等优点,适用作多层绝热间隔层。本研究采用扫描电子显微镜、压汞法和瞬态平面热源法,探究了玻璃纤维纸、植物纤维纸和化学纤维纸的微观结构及热物理性能。结果表明,玻璃纤维和化学纤维表面光滑,横截面呈圆形状;植物纤维具有天然纹理,横截面为扁平状。各纤维纸的纤维直径存在显著差异,且玻璃纤维纸的纤维直径最小。3种纤维纸中,化学纤维纸的孔隙率最小(83.62%),植物纤维纸则拥有最大的总孔隙体积(7.174×10^(-3)m^(3)/kg),而玻璃纤维纸具有最大的总孔隙面积(3 889 m^(2)/kg)。在热物理性质方面,玻璃纤维纸的水平、垂向导热系数及比热容均最低,但热扩散系数则显著高于植物纤维纸和化学纤维纸。Fibre papers are appropriate for utilisation as multilayer insulation spacers due to their lightweight,thin,and low thermal conductivity prop-erties.The microstructures and thermophysical properties of glass-fibre paper,plant-fibre paper,and chemical-fibre paper were investigated experi-mentally using scanning electron microscopy,mercury intrusion porosimetry,and transient plane source methods.The results showed that the glass fi-bres and chemical fibres exhibited smooth surfaces and rounded cross-sections,whereas the plant fibres displayed natural textures and flat cross-sec-tions.Significant differences in fibre diameter were observed among the various types of fibre papers,with the glass-fibre paper possessing the smallest fibre diameters.Among of the three kinds of fibre papers,chemical-fibre paper exhibited the lowest porosity(83.62%),plant-fibre paper demonstra-teed the greatest total pore volume(7.174×10^(-3) m^(3)/kg),and glass-fibre paper showed the largest total pore area(3889 m^(2)/kg).In terms of thermo-physical properties,glass-fibre paper exhibited the lowest horizontal and vertical thermal conductivities,as well as specific heat capacity.However,the thermal diffusivity of glass-fiber paper was significantly higher than that of plant-fibre paper and chemical-fibre paper.

关 键 词：多层绝热 间隔层纤维纸 压汞法 瞬态平面热源法 

分 类 号：TS7[轻工技术与工程—制浆造纸工程] TB35[一般工业技术—材料科学与工程]