What is Carbon Fiber and How Does It Work?

Custom carbon fibre tubes? Carbon fibre is made up of strands of fibres that are 5 to 10 microns in diameter and are made up of long, closely interlinked carbon atom chains in a tiny crystalline structure. These fibres are stiff, strong, and light, and they’re employed in a variety of ways to make high-performance building materials. Carbon fibre reinforcements are available in a wide range of weaves, braids, and other formats, including tow and unidirectional. Carbon fibre-reinforced composites in a variety of forms and fibre patterns are made by combining these with various resins. Want to buy a carbon fiber round tube? Check out roll wrapped carbon tubes.

What is Carbon Fiber and How Is It Made?

Step 1: Precursor

An organic polymer precursor is required to make carbon fibre. Heat and chemical agents are used to transform this raw material into carbon fibre.

A rayon precursor was used to create the first high-performance carbon fibre composites.

Approximately 90% of carbon fibre is currently manufactured from polyacrylonitrile, with the remaining 10% or so made from rayon or petroleum pitch.

Step 2: Manufacturing

Carbonization is the first step in the production of carbon fibre. The precursor polymer must have a high percentage of carbon atoms in order to produce high-quality carbon fibre. The technique will eliminate the majority of non-carbon atoms from the structure.

The precursor is drawn into long threads first. To prevent the material from burning, the fibres are heated to extremely high temperatures in an anaerobic gas mixture (without oxygen). Heat energises the fibres’ atomic structure, driving out the majority of non-carbon atoms.

Step 3: Procedure

The surface of the carbon fibres must be treated after carbonization to increase bondability with epoxies or other resins. The surface of the carbon fibres is carefully oxidised to promote chemical bonding qualities, while the surface is also roughened to improve mechanical bonding.

This oxidation can be performed in a variety of ways. Carbon fibre can be exposed to various gases, such as carbon dioxide or ozone, as well as liquids, such as nitric acid, or even electrolytic processing.

Step 4: Sizing

To preserve the carbon fibres during the weaving process, they must be sized, or coated, with a polymer before weaving. The size is chosen to ensure compatibility with the laminating resin. After that, the fibres are wrapped into bobbins, spun, and processed into a variety of weaves and other forms.