Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wave-absorbing aerogel with toughened ceramic coating and preparation method thereof
The invention discloses wave-absorbing aerogel with a toughened ceramic coating and a preparation method of the wave-absorbing aerogel, and belongs to the technical field of thermal protection materials.The preparation method comprises the steps that short carbon fibers are subjected to surface activation and coated with a p-xylene polymer coating, and surface carbon fibers C are obtained; laying carbon fibers C between the quartz needled felt layers to obtain an aerogel needled preform A; paraffin is used for occupying the surface of the aerogel needling prefabricated body A, and an aerogel needling prefabricated body B is obtained; carrying out vacuum impregnation on alkaline silicon dioxide sol, and treating to obtain aerogel D; and uniformly coating the surface of the aerogel D with the ceramic slurry, and treating to obtain the wave-absorbing aerogel with the magnesium boroaluminate ceramic anti-scouring coating toughened by the Mg2B2O5 crystal whiskers. According to the invention, the thermal protection material with wave-absorbing stealth function and airflow scouring resistance can be prepared.
本发明公开了一种带有增韧陶瓷涂层的吸波气凝胶及其制备方法，属于热防护材料技术领域，通过将短切碳纤维进行表面活化，涂覆对二甲苯高分子镀层，得到表碳纤维C；再在石英针刺毡铺层间铺覆碳纤维C，得到气凝胶针刺预制体A；用石蜡对气凝胶针刺预制体A的表面进行占位，得到气凝胶针刺预制体B；通过真空浸渍碱性二氧化硅溶胶，处理后得到气凝胶D；将陶瓷浆料对气凝胶D表面进行均匀涂覆，处理后得到带有Mg2B2O5晶须增韧的硼铝酸镁陶瓷抗冲刷涂层的吸波气凝胶。本发明能够制备一种具有吸波隐身功能且抗气流冲刷的热防护材料。
Wave-absorbing aerogel with toughened ceramic coating and preparation method thereof
The invention discloses wave-absorbing aerogel with a toughened ceramic coating and a preparation method of the wave-absorbing aerogel, and belongs to the technical field of thermal protection materials.The preparation method comprises the steps that short carbon fibers are subjected to surface activation and coated with a p-xylene polymer coating, and surface carbon fibers C are obtained; laying carbon fibers C between the quartz needled felt layers to obtain an aerogel needled preform A; paraffin is used for occupying the surface of the aerogel needling prefabricated body A, and an aerogel needling prefabricated body B is obtained; carrying out vacuum impregnation on alkaline silicon dioxide sol, and treating to obtain aerogel D; and uniformly coating the surface of the aerogel D with the ceramic slurry, and treating to obtain the wave-absorbing aerogel with the magnesium boroaluminate ceramic anti-scouring coating toughened by the Mg2B2O5 crystal whiskers. According to the invention, the thermal protection material with wave-absorbing stealth function and airflow scouring resistance can be prepared.
本发明公开了一种带有增韧陶瓷涂层的吸波气凝胶及其制备方法，属于热防护材料技术领域，通过将短切碳纤维进行表面活化，涂覆对二甲苯高分子镀层，得到表碳纤维C；再在石英针刺毡铺层间铺覆碳纤维C，得到气凝胶针刺预制体A；用石蜡对气凝胶针刺预制体A的表面进行占位，得到气凝胶针刺预制体B；通过真空浸渍碱性二氧化硅溶胶，处理后得到气凝胶D；将陶瓷浆料对气凝胶D表面进行均匀涂覆，处理后得到带有Mg2B2O5晶须增韧的硼铝酸镁陶瓷抗冲刷涂层的吸波气凝胶。本发明能够制备一种具有吸波隐身功能且抗气流冲刷的热防护材料。
Wave-absorbing aerogel with toughened ceramic coating and preparation method thereof
一种带有增韧陶瓷涂层的吸波气凝胶及其制备方法
JI DAYONG (Autor:in) / LIU XIAOBO (Autor:in) / ZHANG BEIBEI (Autor:in) / SUN JINGJING (Autor:in) / AN XUAN (Autor:in) / LI WENJING (Autor:in) / ZHANG FAN (Autor:in) / SU LIJUN (Autor:in) / HUANG HONGYAN (Autor:in) / LEI CHAOSHUAI (Autor:in)
29.03.2024
Patent
Elektronische Ressource
Chinesisch
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