Ruirui Zhang , Junru Yao , Jinlong Lv , Tantan Liu , Yan Wang , Dongchuang Wu , Lei Zhang , Youyi Sun
{"title":"热处理硅胶气凝胶,增强机械性能,隔热,油水分离和自清洁","authors":"Ruirui Zhang , Junru Yao , Jinlong Lv , Tantan Liu , Yan Wang , Dongchuang Wu , Lei Zhang , Youyi Sun","doi":"10.1016/j.jnoncrysol.2025.123788","DOIUrl":null,"url":null,"abstract":"<div><div>Against the backdrop of the increasingly severe global energy crisis and environmental issues, coupled with the vigorous development of emerging fields such as flexible electronic devices and wearable equipment, multifunctional aerogel materials with mechanical flexibility have become a key research focus and challenge. Addressing the critical issues of high brittleness and poor mechanical properties in traditional silica aerogels, this work successfully developed a novel material with both excellent mechanical performance and multifunctional characteristics by thermally modifying silica aerogels derived from organosilicon sources. Using methyl triethoxysilane and dimethyl diethoxysilane as precursors, the aerogel prepared via the sol-gel method underwent heat treatment at 200°C, resulting in significantly enhanced neck fusion within its three-dimensional network skeleton. This led to a 57% increase in compressive strength to 166.2 kPa (at 80% strain) while maintaining good elasticity. The heat treatment also optimized the pore structure, enabling the material to retain 84% of its mass at 800°C and exhibit a low thermal conductivity of 0.0424 W·m⁻¹·K⁻¹. Infrared thermal imaging demonstrated that it could maintain a temperature difference of 148°C under heating at 200°C. Additionally, the aerogel exhibited superhydrophobicity (water contact angle<span><math><mo>></mo></math></span>144°) and superoleophilicity, with an adsorption capacity for various oils exceeding 15 times its own weight and stable performance over multiple cycles. Through innovative heat treatment processes, we achieved synergistic optimization of aerogel performance, providing a promising new multifunctional material for applications in building energy efficiency, environmental remediation, and flexible electronics.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"668 ","pages":"Article 123788"},"PeriodicalIF":3.5000,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Heat treatment of silica aerogel for enhanced mechanical properties, heat insulation, oil-water separation and self-cleaning\",\"authors\":\"Ruirui Zhang , Junru Yao , Jinlong Lv , Tantan Liu , Yan Wang , Dongchuang Wu , Lei Zhang , Youyi Sun\",\"doi\":\"10.1016/j.jnoncrysol.2025.123788\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Against the backdrop of the increasingly severe global energy crisis and environmental issues, coupled with the vigorous development of emerging fields such as flexible electronic devices and wearable equipment, multifunctional aerogel materials with mechanical flexibility have become a key research focus and challenge. Addressing the critical issues of high brittleness and poor mechanical properties in traditional silica aerogels, this work successfully developed a novel material with both excellent mechanical performance and multifunctional characteristics by thermally modifying silica aerogels derived from organosilicon sources. Using methyl triethoxysilane and dimethyl diethoxysilane as precursors, the aerogel prepared via the sol-gel method underwent heat treatment at 200°C, resulting in significantly enhanced neck fusion within its three-dimensional network skeleton. This led to a 57% increase in compressive strength to 166.2 kPa (at 80% strain) while maintaining good elasticity. The heat treatment also optimized the pore structure, enabling the material to retain 84% of its mass at 800°C and exhibit a low thermal conductivity of 0.0424 W·m⁻¹·K⁻¹. Infrared thermal imaging demonstrated that it could maintain a temperature difference of 148°C under heating at 200°C. Additionally, the aerogel exhibited superhydrophobicity (water contact angle<span><math><mo>></mo></math></span>144°) and superoleophilicity, with an adsorption capacity for various oils exceeding 15 times its own weight and stable performance over multiple cycles. Through innovative heat treatment processes, we achieved synergistic optimization of aerogel performance, providing a promising new multifunctional material for applications in building energy efficiency, environmental remediation, and flexible electronics.</div></div>\",\"PeriodicalId\":16461,\"journal\":{\"name\":\"Journal of Non-crystalline Solids\",\"volume\":\"668 \",\"pages\":\"Article 123788\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2025-09-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Non-crystalline Solids\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022309325004041\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Non-crystalline Solids","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022309325004041","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Heat treatment of silica aerogel for enhanced mechanical properties, heat insulation, oil-water separation and self-cleaning
Against the backdrop of the increasingly severe global energy crisis and environmental issues, coupled with the vigorous development of emerging fields such as flexible electronic devices and wearable equipment, multifunctional aerogel materials with mechanical flexibility have become a key research focus and challenge. Addressing the critical issues of high brittleness and poor mechanical properties in traditional silica aerogels, this work successfully developed a novel material with both excellent mechanical performance and multifunctional characteristics by thermally modifying silica aerogels derived from organosilicon sources. Using methyl triethoxysilane and dimethyl diethoxysilane as precursors, the aerogel prepared via the sol-gel method underwent heat treatment at 200°C, resulting in significantly enhanced neck fusion within its three-dimensional network skeleton. This led to a 57% increase in compressive strength to 166.2 kPa (at 80% strain) while maintaining good elasticity. The heat treatment also optimized the pore structure, enabling the material to retain 84% of its mass at 800°C and exhibit a low thermal conductivity of 0.0424 W·m⁻¹·K⁻¹. Infrared thermal imaging demonstrated that it could maintain a temperature difference of 148°C under heating at 200°C. Additionally, the aerogel exhibited superhydrophobicity (water contact angle144°) and superoleophilicity, with an adsorption capacity for various oils exceeding 15 times its own weight and stable performance over multiple cycles. Through innovative heat treatment processes, we achieved synergistic optimization of aerogel performance, providing a promising new multifunctional material for applications in building energy efficiency, environmental remediation, and flexible electronics.
期刊介绍:
The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid.
In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.