Home> News> How to make carbon fiber sheet
August 20, 2019

How to make carbon fiber sheet

How to make Carbon Fiber Sheet

The first process is the spinning process. Acrylonitrile plastic powder is mixed with another plastic, and is reacted with a catalyst in a conventional suspension or solution polymerization process to form a polyacrylonitrile plastic. The plastic is then spun into fibers using one of several different methods. In one particular method, specific chemicals are pumped through tiny jets into a chemical bath where the plastic coagulates and solidifies into fibers.


The subsequent step is the stabilizing of the fiber. The stabilization process is done by heating the fiber in the air at 200-300°C for 30-120 minutes. Once the fibers are stabilized, we move into the carbonizing process, where they are heated to a temperature of about 1,000-3,000° C for several minutes in a furnace filled with a gas mixture that does not contain oxygen.This lack of oxygen prevents the fibers from burning in the very high temperatures.The gas pressure inside the furnace is kept higher than the outside air pressure and the points where the fibers enter and exit the furnace are sealed to prevent any oxygen from entering. The heating process removes the non-carbon atoms. As the non-carbon atoms are expelled, the remaining carbon atoms form tightly bonded carbon crystals that are aligned more or less parallel to the long axis of the fiber.

The last step is treating of the surface. The addition of oxygen atoms to the surface of the fiber provides better chemical bonding properties. Oxidation can be achieved by immersing the fibers in various gases, such as air, carbon dioxide or ozone, or multiple liquids, such as sodium hypochlorite or nitric acid. The fibers can also be coated electrolytically by making the fibers the positive terminal in a bath filled with various electrically conductive materials. The surface treatment process must be carefully controlled to avoid the formation of tiny surface defects, such as pits, which could cause fiber failure. After the fibers are treated, they`re ready for the final process, which is the resizing. Coating materials are chosen that are compatible with the adhesive used to form composite materials.(epoxy, polyester, nylon, urethane, and others.)
Share to:

LET'S GET IN TOUCH

Copyright © 2024 Shenzhen Feimoshi Technology Limited. (HOBBY CARBON CNC LTD.) All rights reserved. Privacy Policy

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

Send