Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alumina fiber reinforced quartz ceramic-based composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and particularly relates to an alumina fiber reinforced quartz ceramic-based composite material and a preparation method thereof. Dipping alumina fibers into the aluminum-silicon-oxygen sol, and carrying out heat treatment to obtain an aluminum-silicon-oxygen coating; the alumina fibers are woven into a 2.5 D warp insertion and weft insertion structure woven body, the volume fraction of reinforcement fibers is 35-55%, and the thickness of the woven body is 3-20 mm; after the alumina fiber woven body is heated, silica sol is injected into a container to be fully impregnated into the 2.5 D warp insertion weft insertion structure alumina woven body with the transition interface layer, the silica sol is cured and dried, silica sol particles rapidly construct a gel three-dimensional network, and the alumina fiber woven body with the 2.5 D warp insertion weft insertion structure is obtained. After moisture is fully volatilized, obtaining an unsintered 2.5 D warp insertion weft insertion structure alumina fiber reinforced quartz ceramic-based composite material green body; then sintering in vacuum at the temperature of 800-1000 DEG C, and keeping the temperature for 30-120 minutes to obtain a semi-finished product of the alumina fiber reinforced quartz ceramic-based composite material with the 2.5 D warp insertion and weft insertion structure; and repeating the steps for 1-3 times, and when the weight increment of the composite material is less than or equal to 4%, obtaining a finished product of the alumina fiber reinforced quartz ceramic-based composite material with the 2.5 D warp insertion and weft insertion structure.
本发明属于复合材料技术领域，具体涉及一种氧化铝纤维增强石英陶瓷基复合材料及其制备方法；将氧化铝纤维浸渍到铝‑硅‑氧溶胶中，热处理得到铝‑硅‑氧涂层；氧化铝纤维织成2.5D衬经衬纬结构编织体，增强体纤维体积分数为35％～55％，编织体厚度为3mm～20mm；将氧化铝纤维编织体热处后，将硅溶胶注入容器内充分浸渍到带过渡界面层的2.5D衬经衬纬结构氧化铝编织体，对硅溶胶进行固化和干燥，硅溶胶粒子快速构建凝胶三维网络，待水分充分挥发后得到未烧结的2.5D衬经衬纬结构氧化铝纤维增强石英陶瓷基复合材料坯体；随后在800℃～1000℃真空下烧结，保温时间为30min～120min，得到2.5D衬经衬纬结构氧化铝纤维增强石英陶瓷基复合材料半成品；重复前述步骤1次～3次，当复合材料增重≤4％时，得到2.5D衬经衬纬结构氧化铝纤维增强石英陶瓷基复合材料成品。
Alumina fiber reinforced quartz ceramic-based composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and particularly relates to an alumina fiber reinforced quartz ceramic-based composite material and a preparation method thereof. Dipping alumina fibers into the aluminum-silicon-oxygen sol, and carrying out heat treatment to obtain an aluminum-silicon-oxygen coating; the alumina fibers are woven into a 2.5 D warp insertion and weft insertion structure woven body, the volume fraction of reinforcement fibers is 35-55%, and the thickness of the woven body is 3-20 mm; after the alumina fiber woven body is heated, silica sol is injected into a container to be fully impregnated into the 2.5 D warp insertion weft insertion structure alumina woven body with the transition interface layer, the silica sol is cured and dried, silica sol particles rapidly construct a gel three-dimensional network, and the alumina fiber woven body with the 2.5 D warp insertion weft insertion structure is obtained. After moisture is fully volatilized, obtaining an unsintered 2.5 D warp insertion weft insertion structure alumina fiber reinforced quartz ceramic-based composite material green body; then sintering in vacuum at the temperature of 800-1000 DEG C, and keeping the temperature for 30-120 minutes to obtain a semi-finished product of the alumina fiber reinforced quartz ceramic-based composite material with the 2.5 D warp insertion and weft insertion structure; and repeating the steps for 1-3 times, and when the weight increment of the composite material is less than or equal to 4%, obtaining a finished product of the alumina fiber reinforced quartz ceramic-based composite material with the 2.5 D warp insertion and weft insertion structure.
本发明属于复合材料技术领域，具体涉及一种氧化铝纤维增强石英陶瓷基复合材料及其制备方法；将氧化铝纤维浸渍到铝‑硅‑氧溶胶中，热处理得到铝‑硅‑氧涂层；氧化铝纤维织成2.5D衬经衬纬结构编织体，增强体纤维体积分数为35％～55％，编织体厚度为3mm～20mm；将氧化铝纤维编织体热处后，将硅溶胶注入容器内充分浸渍到带过渡界面层的2.5D衬经衬纬结构氧化铝编织体，对硅溶胶进行固化和干燥，硅溶胶粒子快速构建凝胶三维网络，待水分充分挥发后得到未烧结的2.5D衬经衬纬结构氧化铝纤维增强石英陶瓷基复合材料坯体；随后在800℃～1000℃真空下烧结，保温时间为30min～120min，得到2.5D衬经衬纬结构氧化铝纤维增强石英陶瓷基复合材料半成品；重复前述步骤1次～3次，当复合材料增重≤4％时，得到2.5D衬经衬纬结构氧化铝纤维增强石英陶瓷基复合材料成品。
Alumina fiber reinforced quartz ceramic-based composite material and preparation method thereof
一种氧化铝纤维增强石英陶瓷基复合材料及其制备方法
XU HUI (Autor:in) / MEN WEIWEI (Autor:in) / WU XIAO (Autor:in) / ZHANG SHUWEI (Autor:in) / ZHU SIYU (Autor:in)
15.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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