Cement-based aerogel material with intrinsic anti-aging ability and stable optical performance and preparation method thereof

By using in-situ copolymerization and supercritical CO2 drying technology, anti-aging functional groups are chemically bonded to the cement-based aerogel network, solving the problems of light transmittance decay and compressive strength reduction in cement-based aerogel materials during aging. This achieves high light transmittance and long-term stability of the material, making it suitable for optical devices.

CN122145134APending Publication Date: 2026-06-05JIANGSU SOBUTE NEW MATERIALS CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU SOBUTE NEW MATERIALS CO LTD
Filing Date
2025-04-16
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Cement-based aerogel materials exhibit significant decreases in light transmittance and compressive strength after long-term exposure to the environment and aging. Furthermore, existing modification methods struggle to balance anti-aging properties with optical performance stability, failing to meet the high light transmittance and long-term stability requirements of optical devices.

Method used

By chemically bonding anti-aging functional groups into the cement-based aerogel network through in-situ copolymerization, the pore structure and optical properties are optimized. Ultraviolet absorption, anti-oxidation and hydrophobic monomers are introduced to form stable chemical bonds. Combined with supercritical CO2 drying technology, cement-based aerogel materials with both intrinsic anti-aging ability and stable optical properties are prepared.

Benefits of technology

Under composite aging conditions, the light transmittance decreases by less than 5%, the compressive strength remains stable, and the optical and mechanical properties of the material are significantly improved, meeting the requirements of high light transmittance and long-term stability for optical devices.

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Abstract

The application provides a cement-based aerogel material with intrinsic anti-aging ability and stable optical performance and a preparation method thereof, anti-aging functional groups are chemically bonded to the cement-based aerogel network through in-situ copolymerization, the pore structure and optical performance are optimized, and the synergistic improvement of anti-aging performance and optical stability is realized. The raw materials of the cement-based aerogel material include a matrix material and a functional monomer, the matrix material is composed of silicate cement and silica sol, wherein the cement accounts for 50-70wt%, and the silica sol accounts for 30-50wt%; the functional monomer includes ultraviolet absorbing monomer A, antioxidant monomer B and hydrophobic monomer C, and the total amount of the functional monomer ranges from 1wt% to 8wt%. The cement-based aerogel material obtained in the application has excellent physical performance (such as optical performance), greatly promotes the important application value and application potential of the material in the fields of optoelectronic devices, gas-sensitive sensors, space high-speed particle capture and electrochemical energy storage devices, thermal insulation and the like.
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