A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of composite material preparation, and particularly relates to a high-strength and high-toughness ultrahigh-temperature ceramic matrix composite material and a preparation method thereof. The preparation method comprises the following steps: alternately depositing two coatings on the surface of the carbon fiber material by adopting a chemical vapor deposition method to obtain the carbon fiber material with the multilayer CVD composite coating, wherein the two coatings are one of a pyrolytic carbon layer or a layered ceramic coating and an ultrahigh-temperature ceramic coating; adopting a phenolic resin/epoxy resin solution and ceramic powder to form ceramic slurry, coating the CVD composite coating carbon fiber material with the ceramic slurry, performing alternately staggered stacking and needling to obtain a stacked fiber felt, and after vacuum drying, performing warm-pressing curing and carbonization treatment, and obtaining a porous prefabricated body; and finally, carrying out densification treatment to obtain the ceramic-based composite material. The material has high strength, high fracture toughness, oxidation resistance, ablation resistance and corrosion resistance, and can be applied to high-temperature and ultrahigh-temperature structural materials, oxidation-resistant and corrosion-resistant materials and aerospace ablation-resistant materials.
本发明属于复合材料制备技术领域，具体涉及一种高强、高韧超高温陶瓷基复合材料及其制备方法。制备方法包括：在碳纤维材料的表面采用化学气相沉积方法交替沉积两类涂层获得多层CVD复合涂层的碳纤维材料；两类涂层为热解炭层或层状陶瓷涂层中的一种和超高温陶瓷涂层；采用酚醛树脂/环氧树脂溶液与陶瓷粉末组成陶瓷浆料涂覆在CVD复合涂层碳纤维材料上，并交替错位层叠、针刺获得层叠纤维毡，再经真空干燥后，进行温压固化、碳化处理后获得多孔预制体；最后进行增密处理获得陶瓷基复合材料，该材料具有高强度、高断裂韧性和抗氧化、抗烧蚀、抗腐蚀性能，可应用于高温、超高温结构材料，抗氧化抗腐蚀材料，航天耐烧蚀材料。
The invention belongs to the technical field of composite material preparation, and particularly relates to a high-strength and high-toughness ultrahigh-temperature ceramic matrix composite material and a preparation method thereof. The preparation method comprises the following steps: alternately depositing two coatings on the surface of the carbon fiber material by adopting a chemical vapor deposition method to obtain the carbon fiber material with the multilayer CVD composite coating, wherein the two coatings are one of a pyrolytic carbon layer or a layered ceramic coating and an ultrahigh-temperature ceramic coating; adopting a phenolic resin/epoxy resin solution and ceramic powder to form ceramic slurry, coating the CVD composite coating carbon fiber material with the ceramic slurry, performing alternately staggered stacking and needling to obtain a stacked fiber felt, and after vacuum drying, performing warm-pressing curing and carbonization treatment, and obtaining a porous prefabricated body; and finally, carrying out densification treatment to obtain the ceramic-based composite material. The material has high strength, high fracture toughness, oxidation resistance, ablation resistance and corrosion resistance, and can be applied to high-temperature and ultrahigh-temperature structural materials, oxidation-resistant and corrosion-resistant materials and aerospace ablation-resistant materials.
本发明属于复合材料制备技术领域，具体涉及一种高强、高韧超高温陶瓷基复合材料及其制备方法。制备方法包括：在碳纤维材料的表面采用化学气相沉积方法交替沉积两类涂层获得多层CVD复合涂层的碳纤维材料；两类涂层为热解炭层或层状陶瓷涂层中的一种和超高温陶瓷涂层；采用酚醛树脂/环氧树脂溶液与陶瓷粉末组成陶瓷浆料涂覆在CVD复合涂层碳纤维材料上，并交替错位层叠、针刺获得层叠纤维毡，再经真空干燥后，进行温压固化、碳化处理后获得多孔预制体；最后进行增密处理获得陶瓷基复合材料，该材料具有高强度、高断裂韧性和抗氧化、抗烧蚀、抗腐蚀性能，可应用于高温、超高温结构材料，抗氧化抗腐蚀材料，航天耐烧蚀材料。
High-toughness ultrahigh-temperature ceramic-based composite material and preparation method thereof
一种高强韧超高温陶瓷基复合材料及其制备方法
2022-02-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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