结构参数对石英纤维针刺毡防隔热和力学性能的影响  

Effects of Structural Parameters on Thermal Insulation and Mechanical Properties of Quartz Fiber Needled Felt

作　　者：杨浩伟 师建军[2] 王伟[2] 罗丽娟[2] 郑振荣[1] YANG Haowei;SHI Jianjun;WANG Wei;LUO Lijuan;ZHENG Zhenrong(School of Textile Science and Engineering,Tiangong University,Tianjin 300387;Science and Technology on Advanced Functional Composite Laboratory,Aerospace Research Institute of Materials&Processing Technology,Beijing 100076)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京100076

出　　处：《宇航材料工艺》2024年第2期62-68,共7页Aerospace Materials & Technology

基　　金：国家自然科学基金(No.52003071);北京市科技新星计划(Z211100002121090)。

摘　　要：为开发具有良好防隔热和力学性能的高性能石英纤维毡,基于传热数学方程,预测了石英纤维毡的厚度对其隔热性能的影响规律;为提高纤维毡的力学性能,探究了在纤维毡中添加不同层数的石英纤维布对其力学性能的影响规律;此外还探讨了针刺密度对石英纤维毡隔热性能和力学性能的影响。结果表明:石英纤维毡传热模型与实验吻合度可达94.8%;石英纤维毡厚度提升2 mm,其隔热性能提高20℃左右;添加石英纤维布可以显著提高纤维毡断裂强力和撕破强力;针刺密度可以提升纤维毡力学性能,但针刺密度过大会破坏纤维毡结构,使其力学性能下降。In order to develop high-performance quartz fiber felt with good thermal insulation and mechanical properties,the effects of the thickness of quartz fiber felt on its thermal insulation performance were predicted based on the mathematical equation of heat transfer.To improve the mechanical properties of fiber felt,the influence of adding different layers of quartz fiber cloth to the fiber felt on its mechanical properties was investigated Additionally,the influence of needle-punched density on the thermal insulation and mechanical properties of quartz fiber felt was also discussed.The results show that the simulation temperature of quartz fiber felt has a good agreement with the experiment,with the calculation accuracy is up to 94.8%.The thermal insulation performance improves by about 20℃when the thickness of the quartz fiber felt is increased by 2 mm.Adding quartz fiber cloth significantly improves the breaking strength and tearing strength of fiber felt.However,excessive needle punched density reduces its mechanical properties and damage the structure of fiber felt.

关 键 词：石英纤维毡 结构参数 隔热性能 力学性能 数值模拟 

分 类 号：TQ343[化学工程—化纤工业]