Let’s Learn about Charcoal Felt

 

At present, there are three main types of carbon felt in the world: polyacrylonitrile (PAN)-based carbon felt, viscose-based carbon felt, and asphalt-based carbon felt. The largest domestic production and consumption is polyacrylonitrile (PAN)-based carbon felt. Specifically, it is divided into PAN-based acrylic carbon felt, PAN-based raw fiber carbon felt, PAN-based preoxidized fiber carbon felt, and PAN-based carbon fiber carbon felt. The corresponding raw materials are PAN-based acrylic short fiber, PAN-based carbon fiber raw fiber short fiber, PAN-based carbon fiber preoxidized fiber short fiber, and PAN-based carbon fiber chopped wire.

 

 

The advantages of PAN-based acrylic carbon felt are low price, sufficient supply, many manufacturers, and transparent profits. The disadvantages are that the product has high ash content, general elasticity, general tension, general oxidation resistance, and general thermal insulation performance. The most obvious feature is that it falls off and pricks your hand when you touch it.

 

The advantages of this type of carbon felt are low ash content, good elasticity, good tension, good oxidation resistance, and good thermal insulation performance. The disadvantages are high price, low cost performance for mid- and low-end applications, small market share, fewer manufacturers than acrylic carbon felt, and scattered manufacturers, resulting in large differences in production costs such as freight and labor, and thus large price differences. Since the raw materials of PAN-based carbon fiber carbon felt are directly carbon fiber chopped strands, there is no need for pre-oxidation and carbonization in production, and only need to be needled into felt. However, due to the high elasticity and hardness of carbon fiber chopped strands, it is difficult to curl, and it is particularly easy to break the needle during needle punching.

 

At present, some domestic companies have made this type of carbon felt. It has not been used in large quantities on the market. The manufacturer is unknown and the price is unknown. The advantages that can be confirmed are lower ash content and better elasticity. The disadvantages that can be confirmed are that the fiber curl is not enough and the cohesion is insufficient. Although the tensile force of the single filament is good, the tensile force of the overall carbon felt is average. It uses the raw fiber produced by carbon fiber to needle-punch into felt, and then goes through the pre-oxidation and carbonization production process. It is a new product that has appeared in the market in recent years.

 

Its performance is close to that of pre-oxidized fiber carbon felt, and its price is slightly higher than that of acrylic carbon felt. The advantages are high cost performance, low price, low ash content, good elasticity, good tensile strength, good anti-oxidation performance, and good thermal insulation performance. The disadvantages are complex production process, low output of single production line, long time and high energy consumption.