Continuous fiber impregnation system

Abstract

The invention discloses a continuous fiber impregnation system. The continuous fiber impregnation system is characterized by comprising a glue storing tank, a gradient draft tube, an impregnation tank, a recovery tank, a vacuum pump and a fiber spreading impregnation transmission system, wherein the lower part of the glue storing tank is communicated with the impregnation tank through the gradient draft tube, the recovery tank is arranged below the impregnation tank, the fiber spreading impregnation transmission system passes through the impregnation tank and arranged above the recovery tank, the bottom of the recovery tank is communicated with the glue storing tank through a return pipe, the glue storing tank is communicated with the vacuum pump through a vacuum tube, the glue storing tank, the gradient draft tube and the tank wall of the impregnation tank are all of a double-layer structure, and multiple segments of resistance wires are arranged in the middle part of the double-layer structure. According to the invention, a glue storage zone and an impregnation zone are separated and are connected through pipelines with temperature gradient, and a fiber positioning device, a spreading device, a glue controlling device and a tension force adjusting device are arranged; a redundant glue solution can be recycled. With the system provided by the invention, fibers can be fully impregnated, and the glue solution does not gel in advance.

Description

technical field [0001] The invention relates to a dipping system, in particular to a continuous fiber dipping system. Background technique [0002] Due to the high specific strength and specific modulus, excellent corrosion resistance and good fatigue resistance, fiber composite materials have been widely used in aerospace, construction, sporting goods and other fields. Fiber composites are formed by continuous fibers impregnated with resin and cured by hot pressing. During the infiltration process, the resin needs to be heated and melted, and then the fibers are infiltrated. Since the currently used fiber bundles are composed of multiple fibers, such as 12K carbon fiber contains 12,000 carbon fibers, in order to fully infiltrate the fibers, the resin needs to have a lower viscosity. Since the viscosity of the resin decreases with increasing temperature, the resin needs to be heated to a higher temperature. However, at higher temperatures, the resin will undergo a curing ...

AI Technical Summary

Problems solved by technology

Although this design completely separates the glue storage area from the dipping area, because the glue storage tank must have a lower temperature to prevent the resin glue from curing, the fluidity of the glue is poor, and it is impossible to pass through the 180°bent pipeline into the dipping tank

In order to ensure the dipping effect, the temperature of the dipping tank must be high, and the temperature difference with the glue storage tank is relatively large. After the glue in the glue storage tank enters the dipping tank, it takes a long time to reach the temperature balance, which seriously affects the dipping The stability of the glue temperature in the tank

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