Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Silicon dioxide aerogel composite material as well as preparation method and application thereof
The invention discloses a silicon dioxide aerogel composite material as well as a preparation method and application thereof, and belongs to the technical field of aerogel materials. The preparation method comprises the following steps: adding fibers with different lengths into silica sol, uniformly mixing, adding a nanofiber dispersion, and uniformly mixing to obtain a prepolymer; and adjusting the pH value of the prepolymer to be alkaline, standing until gelation and aging, adding a surface modifier, standing for modification, drying, and cooling to obtain the silicon dioxide aerogel composite material. The aerogel has excellent mechanical properties, is not easy to crack under the action of external force, well maintains the integrity of the material, has good heat insulation property, can solve the problems of poor mechanical properties and easy collapse and cracking of the existing silicon dioxide aerogel, and has certain application prospects in the fields of building energy saving and industrial energy saving.
本发明公开了一种二氧化硅气凝胶复合材料及其制备方法和应用，属于气凝胶材料技术领域。通过在硅溶胶中加入不同长度的纤维混匀，再加入纳米纤维分散体混匀，得到预聚体；调节预聚体的pH值呈碱性，静置至凝胶化、老化，再加入表面改性剂静置改性，干燥后冷却，得到二氧化硅气凝胶复合材料。该气凝胶具有优异的力学性能，不易在外力作用下崩裂，较好地维持了材料的完整性，且该凝胶所具有的良好隔热性，能够解决现有二氧化硅气凝胶存在的机械性能差、易塌缩开裂的问题，在建筑节能和工业节能领域内有一定的应用前景。
Silicon dioxide aerogel composite material as well as preparation method and application thereof
The invention discloses a silicon dioxide aerogel composite material as well as a preparation method and application thereof, and belongs to the technical field of aerogel materials. The preparation method comprises the following steps: adding fibers with different lengths into silica sol, uniformly mixing, adding a nanofiber dispersion, and uniformly mixing to obtain a prepolymer; and adjusting the pH value of the prepolymer to be alkaline, standing until gelation and aging, adding a surface modifier, standing for modification, drying, and cooling to obtain the silicon dioxide aerogel composite material. The aerogel has excellent mechanical properties, is not easy to crack under the action of external force, well maintains the integrity of the material, has good heat insulation property, can solve the problems of poor mechanical properties and easy collapse and cracking of the existing silicon dioxide aerogel, and has certain application prospects in the fields of building energy saving and industrial energy saving.
本发明公开了一种二氧化硅气凝胶复合材料及其制备方法和应用，属于气凝胶材料技术领域。通过在硅溶胶中加入不同长度的纤维混匀，再加入纳米纤维分散体混匀，得到预聚体；调节预聚体的pH值呈碱性，静置至凝胶化、老化，再加入表面改性剂静置改性，干燥后冷却，得到二氧化硅气凝胶复合材料。该气凝胶具有优异的力学性能，不易在外力作用下崩裂，较好地维持了材料的完整性，且该凝胶所具有的良好隔热性，能够解决现有二氧化硅气凝胶存在的机械性能差、易塌缩开裂的问题，在建筑节能和工业节能领域内有一定的应用前景。
Silicon dioxide aerogel composite material as well as preparation method and application thereof
一种二氧化硅气凝胶复合材料及其制备方法和应用
ZHANG YANFENG (Autor:in) / XU TING (Autor:in) / KWAK IN-JU (Autor:in) / TANG ZEHUI (Autor:in) / ZHANG DOUDOU (Autor:in) / WANG GEN (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
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