Carbon-silicon carbide nanofiber aerogel as well as preparation method and application thereof

• Main Authors: HUANG ZHULIN, HU XIAOYE, LI MING, ZHENG CHUNXUE, LI XINYANG, YU JIE
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2024
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SLAG; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF NATURAL STONE

The invention relates to carbon-coated silicon carbide nanofiber aerogel as well as a preparation method and application thereof, and belongs to the technical field of nanofiber aerogel. In order to solve the technical problems that in the prior art, silicon carbide nanofiber aerogel is poor in heat insulation and mechanical properties and cannot be considered at the same time, according to the carbon-coated silicon carbide nanofiber aerogel, plasma is adopted for cleaning graphite felt, and a layer of additional carbon source is coated outside graphite fibers, so that the carbon-coated silicon carbide nanofiber aerogel is obtained; and soaking the amorphous carbon-coated graphite in a mixed solution of tetraethyl orthosilicate, ethanol and deionized water, and calcining at a high temperature to prepare the amorphous carbon-coated graphite carbon partial sacrifice converted carbon-coated silicon carbide aerogel. The silicon carbide shell is resistant to oxidation and ablation, a large number of silicon carbid