| Preparation of MTMS modified glass fiber reinforced Al2O3–SiO2 aerogel composite for the laser irradiation protection |
| Jialei Shen1, Haiyan Liu1, Huihuang Ma1, Yao Chang2, Xiaodong Zhou3 |
1State Key Laboratory of Chemical Engineering, East China University of Science and Technology, No. 130, Meilong Road, Xuhui District, Shanghai, 200237, China
2Institute of Systems Engineering, Academy of Military Science of the People’s Liberation Army, Beijing, 100071, China
3Shanghai Engineering Research Center of Hierarchical Nanomaterials, East China University of Science and Technology, Shanghai, 200237, China |
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Received: March 1, 2023; Revised: August 17, 2023 Accepted: September 23, 2023. Published online: October 17, 2023. |
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| ABSTRACT |
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Due to the significant photothermal damage caused by lasers, there is a need to explore new materials that possess excellent insulation and laser protection properties. In this study, the in situ solution gel method was employed to fabricate a methyltrimethoxysilane (MTMS) modified composite of glass fiber (GF) reinforced Al2O3–SiO2 aerogel. The laser protection capability of aerogel composites with varying ratios of Al/Si was investigated, while the laser ablation behavior of the materials was characterized using FESEM and FT-IR. The results indicate that the composite aerogel material with an Al/Si molar ratio of 3:1 exhibits a high damage threshold temperature and can withstand continuous laser exposure (3500 W/cm2) for 59 s. These findings suggest that Al2O3–SiO2 aerogel composites hold promising potential for applications in laser protection. The pore structure of the aerogel in the region affected by scattering damage is disrupted and appears black, emitting intense visible light upon laser irradiation. In the central ablative melting area, it is evident that the glass fiber and aerogel have undergone complete ablation and melting. |
| Key words:
Al2O3–SiO2 aerogel · Laser irradiation · Glass fiber · Ablation behavior |
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