Method for preparing special product from carbon fiber

Abstract

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.

Description

technical field [0001] The invention relates to a method for making products with carbon fibers, in particular to a method for making special-shaped products with carbon fibers. Background technique [0002] At present, carbon fiber is a fibrous carbon material. It is a new type of material with higher strength than steel, lower density than aluminum, more corrosion resistance than stainless steel, higher temperature resistance than heat-resistant steel, and conductivity like copper, with many valuable electrical, thermal and mechanical properties. . Carbon fiber-reinforced composite materials can be used as aircraft structural materials, electromagnetic shielding materials, artificial ligaments and other body substitute materials, as well as for the manufacture of rocket shells, motor ships, industrial robots, automotive leaf springs and drive shafts, etc. [0003] Carbon fiber is currently a newly developed material in the world. This material has the characteristics of ...

AI Technical Summary

Problems solved by technology

Due to the convenience of integral molding, the section of the nylon long bag used is consistent with the maximum section of the special-shaped shell. Therefore, when the product is covered with carbon fiber, the nylon long bag with a small section will be folded and covered with carbon fiber. Fiber, then inflated and heated to form; inflating is to make the nylon long bag swell and press the carbon fiber layer to obtain a carbon fiber shell product with no pores, good strength and density, and uniform wall thickness; due to the cross-section For small places, long nylon bags need to be folded and inflated, so the folded part will also inflate when inflated, so when the product is formed, the inner wall is not smooth and smooth, which not only affects the appearance, but also the wall thickness is not uniform, but also acts on the carbon fiber layer. The pressure on the top is not enough, it will affect the strength of the product, and it is easy to produce defective products

Due to the above reasons, when the nylon long bag is inflated, the air pressure it bears is also different, and it is easy to break at the corners of the product and places with large cross-sections, which affects the molding of the product

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