The invention discloses a method for preparing a special product from a carbon
fiber. The method comprises the following steps that:
silica gel or rubber is used for preparing an air bag mandrel; because the air bag mandrel has certain
hardness, the carbon
fiber cloth
coating the outer surface is supported by the air bag mandrel, and the carbon
fiber cloth can be conveniently coated, and the coated carbon
fiber layer is uniform, flat and smooth, so that the
operating speed of a worker and the product quality are improved; because a nylon long bag is arranged in the air bag mandrel and forms an air passage in the air bag long bag, when an air source is connected with an air
nozzle of the nylon long bag to charge air in the nylon long bag, the nylon long bag is swelled and deformed under the protection of the air bag mandrel, so that the safety of the nylon long bag is ensured, and the nylon long bag is not infinitely swelled, the
coating of the carbon fiber is not affected due to the break of the nylon long bag; and because the carbon
fiber layer is pressurized by the air bag mandrel, the pressure is uniform, and because the air bag mandrel has the characteristics of
thermal expansion, when the air bag mandrel is swelled by heating, the carbon
fiber layer is pressurized for the second time, so that the carbon fiber product with uniform wall thickness and good strength is obtained.