Process for producing carbon fiber board
The world produces two types of carbon fibers. One is the PAN based carbon fiber, which is made from polyacrylonitrile and the other is an asphalt based carbon fiber, which is distilled from coal, petroleum and synthetic asphalt into bitumen, and then polymerized into fibers.On the strength of carbon fiber PAN based carbon fiber to Youding asphalt base, so overwhelming absolute in the production of carbon fiber in the world.
What is the production process of carbon fiber?For the production process of carbon fiber, when the PAN based carbon fiber is produced, the polyacrylonitrile fiber, which is called the parent fiber, is firstly prepared by polymerization and spinning process. These are then placed in an oxidizing furnace and oxidized at 200 to 300 degrees celsius. In addition, carbon fibers are also carbonized in the carbonization furnace at temperatures between 1000 and 2000 degrees celsius. In addition to the conventional type of fine carbon fiber, the PAN based carbon fiber also includes coarse fiber, known as the "tow man type carbon fiber", which costs less to produce the crude fiber.If you can not understand that there are other carbon fiber net professional look, introduce a carbon fiber network via Wuxi to see you, the above information and pictures very much, I often go to their website to learn.
Method for making carbon fiber sheet:1, first determine the thickness of the plate to be made2 calculate the required number of plies according to the thickness3, and then according to 0 degrees, 45 degrees, 90 degrees, -45 degrees in the order of stacking.4, and then molding it!Now carbon fiber board, in fact, many in the middle are entrained with some glass fiber cloth, of course, there are all carbon, a little more expensive!
Carbon fiber forming process:1, pressing method. This method is put into the carbon fiber prepreg resin has the metal mold, the pressure of excess glue overflow, then high temperature curing, stripping the finished products come out, this method is the most suitable for production of auto parts.2, hand paste layer method. The impregnated carbon fiber sheets are cut or laminated, or so that the sides of the layer are brushed with resin and then pressed to form. This method can be used arbitrarily to select the direction, size and thickness of fibers and is widely used. Note that the shape of the layer is smaller than the shape of the mold, so that the fiber will not bend when it is pressed in the mold.3 、 vacuum bag hot pressing method. Laminated on the mold hill and covered with heat-resistant film, applying pressure from the soft pocket to the laminate and curing in hot pressing.4, winding forming method. The carbon fiber monofilament is wound on the carbon fiber shaft, and is especially suitable for making cylindrical and hollow containers.5, pultrusion. The carbon fiber is fully infiltrated, and the resin and air are removed by extrusion, then solidified in the furnace. The method is simple and suitable for preparing rod shaped and tubular parts.
