How high temperature can carbon fiber withstand
Carbon fiber itself has very high temperature resistance, and it can be said to be an extremely high temperature resistant material, but carbon fiber composite materials depend on the matrix material.
Yan F cone extracts raw materials from petroleum and coal. First, polyacrylonitrile is extracted, and then carbon fiber is extracted through polyacrylonitrile. The technical requirements here are very high, and the oxidation, carbonization and graphitization in the whole process are all It needs high temperature to complete, especially under the high temperature of several thousand degrees of stone quarrying, after removing the magazine, the carbon fiber tow is obtained, so the carbon fiber itself has extremely high temperature resistance, can withstand high temperature of 3000 ℃, and can maintain a good performance advantage .
Why are many carbon fiber products not resistant to high temperature?
As mentioned above, carbon fiber has good and high temperature resistance. In the production of carbon fiber products, it is not simply a material of carbon fiber. A matrix material is also required to complete the production of late fiber products. Carbon fiber products are resistant to high temperatures. Consider the high temperature resistance of the base material.
The fact that many carbon fiber products do not wrinkle and heat up is because carbon fiber composite materials are mostly carbon fiber + resin-based composite materials, and the content of late fiber tow in the composite material is about 40%-45%, so production The high temperature resistance of the finished carbon fiber products is related to the high temperature resistance of the resin. This is like the principle of wooden barrels. The high temperature resistance limit of resin has become the upper limit of high temperature resistance of carbon fiber products.
Under normal circumstances, the high temperature resistance of the resin matrix is about 180C. If it exceeds this temperature for a long time, it will cause the resin matrix to melt, which will affect the final performance of the product.
In addition, in order to further improve the high temperature resistance, the tree finger base will choose a matrix with higher high temperature resistance, that is, a special plastic. If you have a matrix material with higher performance advantages such as PEK and PPS, then the carbon fiber products produced will be resistant to The temperature can reach above 20YC. If higher temperature resistance is required, carbon-based or ceramic metal matrix should be selected. Such high temperature resistance can be better.
Post time: Jun-27-2022