SiO2/Al2O3/ZrO2@C/CCs复合材料的制备及隔热性能研究

何延彤, 王佳艳, 吴倩倩, 李坤明, 王明磊, 巨安奇

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塑料科技 ›› 2024, Vol. 52 ›› Issue (12) : 1-7. DOI: 10.15925/j.cnki.issn1005-3360.2024.12.001
理论与研究

SiO2/Al2O3/ZrO2@C/CCs复合材料的制备及隔热性能研究

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Preparation and Thermal Insulation Properties Study of SiO2/Al2O3/ZrO2@C/CCs Composites

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摘要

碳/碳复合材料(C/CCs)由于其质量轻、导热系数低、耐高温等优点,被认为是隔热应用中最有前途的材料之一。采用树脂浸渍的方式,将二氧化锆、纳米二氧化硅以及氧化铝作为功能性材料引入碳纤维毡/酚醛树脂复合材料中,制得具备优良隔热性能的二氧化硅/氧化铝/二氧化锆@碳/碳复合材料(SiO2/Al2O3/ZrO2@C/CCs),该材料在500 ℃条件下的热导率仅为0.135 W/(m·K)。探讨不同组分比例对隔热性能的影响,并对含不同金属氧化物的碳/碳复合材料表面形貌、力学性能和隔热性能进行对比分析。结果表明:较未加纳米无机材料的碳/碳复合材料,无机材料改性的复合材料隔热性能明显提升,热稳定性得到提高。当SiO2、Al2O3、ZrO2 3种无机材料协同作用时,提升效果最为明显,更利于复合材料在高温环境中的使用。

Abstract

For thermal insulation applications, carbon/carbon composites (C/CCs) are considered to be one of the most promising materials owing to their light weight, low thermal conductivity, and high temperature tolerance. In this paper, zirconium dioxide, nano-silica and alumina were introduced into carbon fiber felt/phenolic resin composites as functional materials by resin impregnation, and silica/alumina/zirconium dioxide@carbon/carbon composites (SiO2/Al2O3/ZrO2@C/CCs) with excellent thermal insulation properties were prepared. The thermal conductivity of SiO2/Al2O3/ZrO2@C/CCs at 500 ℃ is only 0.135 W/(m·K). The effects of different component ratios on thermal insulation properties were discussed, and the surface morphology, mechanical properties and thermal insulation properties of carbon/carbon composites containing different metal oxides were compared and analyzed. Compared with the carbon/carbon composites without nano-inorganic materials, the results show that not only the thermal insulation performance of the composites but also the thermal stability are extremely improved. Under the synergistic action of SiO2, Al2O3 and ZrO2, the improvement effect is the most obvious, which is more conducive to the utilization of the composites in high temperature environment.

关键词

碳/碳复合材料 / SiO2 / Al2O3 / ZrO2 / 隔热材料

Key words

Carbon/carbon composites / SiO2 / Al2O3 / ZrO2 / Thermal insulation materials

中图分类号

TB333

引用本文

导出引用
何延彤 , 王佳艳 , 吴倩倩 , . SiO2/Al2O3/ZrO2@C/CCs复合材料的制备及隔热性能研究. 塑料科技. 2024, 52(12): 1-7 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.12.001
HE Yan-tong, WANG Jia-yan, WU QIAN-qian, et al. Preparation and Thermal Insulation Properties Study of SiO2/Al2O3/ZrO2@C/CCs Composites[J]. Plastics Science and Technology. 2024, 52(12): 1-7 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.12.001

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基金

国家重点研发计划项目(2023YFB3711501)

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