强激光与粒子束2026，Vol.38Issue(11)：42-50,9.DOI:10.11884/HPLPB202638.260112
可用于惯性约束聚变靶材的弹性硅基气凝胶研究
Study of elastic silicon-based aerogels for inertial confinement fusion targets
摘要
Abstract
[Background]In inertial confinement fusion research,the storage and rapid filling of deuterium-tritium fuel place stringent demands on target materials,which must simultaneously exhibit low density,high specific surface area,and strong hydrophobicity.[Purpose]To address these requirements,this work develops a superhydrophobic elastic aerogel through a controllable sol-gel system.[Methods]Methyltriethoxysilane(MTES)was used as the precursor and monohydroxyl-terminated polydimethylsiloxane(PDMS)as an organic reinforcing component,while a mixed solvent of isopropanol(IPA)and N,N-dimethylformamide(DMF)was employed,followed by ambient-pressure drying.[Results]By systematically monitoring the homogeneity of the precursor solution before condensation as functions of PDMS content and the solvent volume ratio VIPA/VDMF,a dissolution phase diagram within the IPA-DMF-PDMS ternary parameter space was established,revealing the governing factors for solution stability.For compositions located in the homogeneous region,the influence of solvent ratio on microstructure and macroscopic properties was further investigated.The results show that increasing VIPA/VDMF leads to a structural evolution of the aerogel framework from isotropic spherical particles to anisotropic,dumbbell-like interconnected networks,accompanied by the formation of hierarchical micron-macron pores.The resulting aerogels exhibit densities below 0.2 g/cm3,water contact angles exceeding 150°,and specific surface areas above 500 m2/g,with a theoretical DT adsorption capacity on the order of 10-2 mol/g,comparable to materials prepared via supercritical drying.Additionally,the materials display excellent elasticity,achieving complete recovery after 45%compressive strain and a maximum compressive strength of 88 kPa.[Conclusions]These results demonstrate that the developed aerogel possesses combined advantages of high surface area,superhydrophobicity,and mechanical resilience,providing a promising material strategy for low-density porous components in ICF target fabrication.关键词
惯性约束聚变/弹性硅基气凝胶/氘氚吸附/溶解相图/超疏水Key words
inertial confinement fusion/elastic silica-based aerogel/deuterium-tritium adsorption/solubility phase diagram/superhydrophobic分类
数理科学引用本文复制引用
邹佳琳,胡选泰,雷婷,朱家艺,毕于铁,任洪波..可用于惯性约束聚变靶材的弹性硅基气凝胶研究[J].强激光与粒子束,2026,38(11):42-50,9.基金项目
中国核动力研究院核反应堆技术国家重点实验室基金项目(SRJJ-0325-0301-01) （SRJJ-0325-0301-01）
特殊环境数字化制造设备技术创新中心项目(KF2025-01-01) （KF2025-01-01）
