不同预制体结构对低密度保温材料性能的影响  

Effects of different prefab structures on the properties of low-density thermal insulation materials

作　　者：白鸽 康媛媛 张永辉 代丽娜 井蕊璇 胡沛玮 BAI Ge;KANG Yuan-yuan;ZHANG Yong-hui;DAI Li-na;JING Rui-xuan;HU Pei-wei(Xi’an Chaoma Technology Co.,Ltd.,Xi’an 710025,China)

机构地区：[1]西安超码科技有限公司,西安710025

出　　处：《炭素》2022年第2期3-7,共5页Carbon

摘　　要：通过设计、制备三种不同结构类型的炭纤维预制体,利用化学气相沉积、表面涂层等工艺获得低密度保温材料制品,并对不同结构的制品进行体积密度、导热性能及力学性能的表征,结果表明,利用整体式Ⅱ结构炭纤维预制体获得的低密度保温材料制品的体积密度为0.33 g/cm3,导热系数为0.16 W/m·K(室温),平均拉伸强度为17.44 MPa,平均弯曲强度为16.30 MPa,综合性能表现最为优异。Through the design and preparation of carbon fiber preforms with three different structural types,low-density thermal insulation material products are obtained by chemical vapor deposition,surface coating and other processes,and the bulk density,thermal conductivity and mechanical properties of products with different structures are measured.The results show that the bulk density of the low-density thermal insulation material product obtained by using the monolithic II structure carbon fiber preform is 0.33 g/cm3,the thermal conductivity is 0.16 W/m·K(room temperature),and the average tensile strength is 17.44 MPa,the average bending strength is 16.30 MPa,and the comprehensive performance is the best.

关 键 词：炭纤维预制体 低密度保温材料 导热系数 

分 类 号：V257[一般工业技术—材料科学与工程]