Heat resistance investigation and mechanical properties of fabric coated with Al2O3 sol-gel

被引：4
作者：
Wei, Jianzheng [1 ]
Hou, Xue [1 ]
Tan, Huifeng [1 ]
Liu, Yuyan [1 ]
机构：
[1] Harbin Inst Technol, Sci & Technol Adv Composites Special Environm Lab, Harbin, Heilongjiang, Peoples R China
来源：
JOURNAL OF THE TEXTILE INSTITUTE | 2018年 / 109卷 / 01期
关键词：
Al2O3; aerogel; sol-gel; flexible fabric; ablation; uniaxial tension; THERMAL PROTECTION SYSTEM; FLIGHT TEST; DEPOSITION; AEROGEL; ALUMINA;
D O I：
10.1080/00405000.2017.1320780
中图分类号：
TB3 [工程材料学]; TS1 [纺织工业、染整工业];
学科分类号：
0805 ; 080502 ; 0821 ;
摘要：
The Inflatable Reentry and Descent Vehicle is a new kind of ballistic atmospheric entry vehicle which generates a piece of large aerodynamic drag area for deceleration when the resistance cone is deployed by gas-filling expansion. However, the aerothermal heating during planetary entry poses a significant challenge to a flexible fabric. In this paper, the para-aramid fabrics with three different sol-gelcoatings (i.e. Al2O3 sol coating, supercritical drying Al2O3 aerogel coating, and atmospheric pressure drying Al2O3 xerogel coating) were proposed for heat resistance analysis and strength analysis. The thermal and mechanical properties of flexible fabric materials were conducted by infrared spectrum analysis, thermogravimetric analysis, scanning electron microscopy analysis, 50s ablation and uniaxial tension testing. All the results indicate that fabric coated with the supercritical drying Al2O3 aerogel possesses high heat resistance and nearly 100% residues strengthen.
引用
收藏
页码：8 / 16
页数：9
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