复合材料科学与工程Issue(7)：24-32,56,10.DOI:10.19936/j.cnki.2096-8000.20260728.004
超细玻璃纤维棉毡的形貌结构及导热系数研究
Study of morphological structure and thermal conductivity of ultra-fine glass fiber wool felts
摘要
Abstract
Scanning electron microscopy(SEM)and mercury intrusion porosimetry(MIP)were employed to de-termine the morphological structure parameters of the two types of ultra-fine glass fiber wool felts,the impact of tem-perature variations on the thermal conductivity of both wool felts was investigated using transient plane source(TPS)method.The findings reveal that the wool felt No.1 has a smaller average fiber diameter(3.36 μm),higher porosity(95.51%),larger total pore volume and area(0.013 2 m3/kg and 1 270 m2/kg,respectively);in contrast,the wool felt No.2 has a larger average fiber diameter(6.27 μm),with porosity,total pore volume,and total pore area of 93.61%,0.008 3 m3/kg,and 669 m2/kg,respectively.At a test temperature of 273.15 K,the average thermal con-ductivities of wool felts No.1 and No.2 are 0.025 7 W/(m·K)and 0.030 7 W/(m·K),respectively.As the test tem-perature increases,molecular thermal motion accelerates,resulting in an increasing trend in the thermal conductivity of both wool felts.At 393.15 K,the average thermal conductivities of wool felts No.1 and No.2 increase to 0.037 0 W/(m·K)and 0.043 3 W/(m·K),respectively.Additionally,due to its smaller fiber diameter,higher porosity,larger total pore volume and area,the wool felt No.1 consistently exhibits lower thermal conductivity and better thermal insu-lation performance than wool felt No.2.This study provides theoretical and data support for the application of ultra-fine glass fiber wool felts in engineering thermal insulation.关键词
超细玻璃纤维棉毡/扫描电子显微镜/压汞法/瞬态平面热源法/形貌结构/导热系数Key words
ultra-fine glass fiber wool felts/scanning electron microscope/mercury intrusion porosimetry/transient plane source method/morphological structure/thermal conductivity分类
通用工业技术引用本文复制引用
马晓勇,王世鹏,李刚,占浩,林小军,张亚娟,李杲..超细玻璃纤维棉毡的形貌结构及导热系数研究[J].复合材料科学与工程,2026,(7):24-32,56,10.基金项目
兰州工业学院"开物"团队支持计划(2025KW-01) （2025KW-01）
兰州城市学院博士科研基金项目(LZCU-BS2025-33) （LZCU-BS2025-33）
