Carbon fiber is generally prepared in an environment of up to 3,000 degrees, and its performance will decrease at about 1500 degrees in an oxygen-free environment. Therefore, carbon fibers leave us with a deep impression of high temperature resistance in most cases.
Although carbon fiber itself is resistant to high temperatures, it cannot be used directly as a material. Carbon fiber is often used as a reinforcing material to be combined with other matrix materials, such as ceramics, metal, carbon, rubber, resin, etc. As a common carbon fiber resin matrix composite product, carbon fiber tube also has the advantage of high temperature resistance?
Although carbon fiber has the advantages of light weight and high strength, since the resin itself is not a high-temperature resistant material, the high-temperature resistance performance advantages of resin-based carbon fiber composite materials are limited by the resin. Generally, the temperature that resin-based carbon fiber composite pipes can withstand is between 200°C and 300°C, but it is sufficient to meet general daily needs.
If you want to take advantage of the properties of carbon fiber and withstand higher temperatures, you must choose other high-temperature-resistant matrix composites. For example, carbon, metal, ceramics and other materials are composited, and each composite material has its suitable use environment and industry.
Carbon fiber composites based on ceramics can be used in the aerospace field with a temperature resistance of more than 2,000 degrees, but the high technology and cost make it difficult to realize industrial applications. At present, carbon-carbon composite materials are widely used as high-temperature resistant materials, which are carbon fiber reinforced carbon materials. The theoretical temperature resistance can reach 2,600 degrees Celsius. It is one of the very few high-end high-temperature resistant materials, but this material needs to be isolated from oxygen. Only in this way can its performance be brought into play, otherwise it will fail at only 400 degrees Celsius.
The temperature resistance of ordinary carbon fiber tubes can only reach about 100°C, and the high temperature resistance field of carbon fiber tubes is still being explored. At present, carbon fiber composite materials resistant to thousands of degrees Celsius are mostly used in the field of national defense as a confidential technology, and there are basically not many applications in the civilian field.