Device for preparing impregnated yarn by one-step method

Abstract

The invention relates to the technical field of carbon fiber impregnation, in particular to a device for preparing impregnated yarn by a one-step method. The device comprises a constant-tension unwinding mechanism, a no-twist positioning mechanism, a fiber spreading mechanism, a yarn tension sensor, an impregnation mechanism, an extrusion and setting mechanism, a drying oven, a traction mechanism and a cutting mechanism. Yarn is released from a yarn drum through the constant-tension unwinding mechanism; the released yarn is spread into flaky yarn through the fiber spreading mechanism; then, the yarn enters the impregnation mechanism to be impregnated with resin; excessive resin is extruded from impregnated yarn and the yarn is set through the extrusion and setting mechanism; the set yarn is thermally cured through the drying oven to form rod-shaped yarn; the rod-shaped yarn is pulled by adopting the traction mechanism; the cutting mechanism is adopted to cut the cured yarn into segments; and the whole carbon fiber impregnation process is completed. The impregnation process is completed in one step, the efficiency is high, no air hole exists in the interior after curing, and the product quality is high.

Description

technical field [0001] The invention relates to the technical field of carbon fiber dipping, in particular to a one-step dipping yarn device. Background technique [0002] Dipping yarn is a cylindrical tow-like composite material made of fiber tows impregnated with liquid resin and cured. This material is generally used as a test sample to test its tensile properties. A standard dipped yarn The sample has a straight appearance, uniform dipping, no burr, no air hole, broken yarn, no hanging resin colloid, no fiber dislocation on the surface of the sample, the whole body is clustered, and the color is round and bright. [0003] At present, the process commonly used to make dipped yarn is vacuum infusion process. The resin used for dipped yarn is vacuum infusion resin. This kind of resin has low viscosity, long curing time, and contains volatile solvents. The impregnation prepared by vacuum infusion process Because the solvent cannot volatilize the yarn, there will be pores on...

AI Technical Summary

Problems solved by technology

[0003] At present, the process commonly used to make dipped yarn is vacuum infusion process. The resin used for dipped yarn is vacuum infusion resin. This kind of resin has low viscosity, long curing time, and contains volatile solvents. The impregnation prepared by vacuum infusion process Because the solvent cannot volatilize the yarn, there will be pores on the surface of the sample, and the vacuum infusion process cannot guarantee the curing of the dipped yarn under constant tension, so the finished product of the dipped yarn sample made by this process is poor, and the tensile test effect is poor. not ideal

Images