Washing device for carbon fiber precursor and washing method

Abstract

The invention discloses a washing device for a carbon fiber precursor. The washing device comprises a left spindle box, a right spindle box and a plurality of washing tanks, wherein the two ends of the washing tanks are respectively connected with the left spindle box and the right spindle box; the washing tanks are arrayed from top to bottom; pressing rollers are respectively arranged on the left spindle box and the right spindle box; the lower edges of the pressing rollers are all soaked in water in the corresponding washing tanks; a plurality of guide rollers for guiding the carbon fiber precursor to gradually pass through the washing tanks from bottom to top in an S shape are respectively arranged on the left spindle box and the right spindle box; each guide roller is in driving connection with the upstream adjacent pressing roller and the downstream adjacent pressing roller, so as to form a driving set; and driving devices one-to-one corresponding to the driving sets are respectively arranged on the left spindle box and the right spindle box. Through the speed difference of the driving sets, the carbon fiber precursor is pre-stretched in the washing process, the carbon fiber precursor is approximately compact, the solvent penetrating into the carbon fiber precursor can be extruded, and the washing effect can be promoted.

Description

technical field [0001] The invention relates to a carbon fiber precursor water washing device and a water washing method. Background technique [0002] Carbon fiber is a new fiber material with high strength and high modulus with a carbon content of more than 95%. Carbon fiber is "soft on the outside and rigid on the inside", lighter than metal aluminum, but stronger than steel, and has the characteristics of corrosion resistance and high modulus. It is an important material in national defense and civilian applications. It not only has the inherent intrinsic characteristics of carbon materials, but also has the softness and processability of textile fibers. It is a new generation of reinforcing fibers. Carbon fiber has many excellent properties, such as high axial strength and modulus, low density, high specific performance, no creep, ultra-high temperature resistance in non-oxidizing environment, good fatigue resistance, specific heat and electrical conductivity between n...

AI Technical Summary

Problems solved by technology

[0003] In the production process of carbon fiber, water washing is an important step. Too much washing water is not conducive to the reduction of production unit consumption, which greatly increases the production cost; too little water washing leads to excessive solvent residue after washing, not only It will make the fiber monofilaments prone to parallel filaments during processing, and the solvent remaining in the drying section will damage the fibers to a certain extent

[0004] The traditional carbon fiber washing device sets up a plurality of washing tanks arranged in sequence up and down, and guides the carbon fiber precursors through the water washing tanks in an "S" shape from bottom to top through guide rollers and pressure rollers to wash the carbon fiber precursors. , the washing effect is still unsatisfactory

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