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Method and device for preparing ultrathin carbon fiber bundle

A carbon fiber bundle, ultra-thin technology, applied in the field of preparation of ultra-thin carbon fiber bundles, can solve the problems of easy evaporation and shrinkage, hindering the development of carbon fiber products, etc., and achieve the effect of simple use, stable product quality, and online continuous and rapid production

Active Publication Date: 2015-06-10
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional carbon fiber production process, the carbon fiber is usually dried in a blast oven directly after the carbon fiber is sized. During this process, the water and liquid resin on the surface of the carbon fiber are easy to evaporate and shrink, resulting in the shrinkage of the filament width during the drying process of the carbon fiber. , this phenomenon seriously hinders the development of ultra-light or ultra-thin carbon fiber products

Method used

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  • Method and device for preparing ultrathin carbon fiber bundle
  • Method and device for preparing ultrathin carbon fiber bundle
  • Method and device for preparing ultrathin carbon fiber bundle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of preparation method of ultra-thin carbon fiber bundle of present embodiment, such as figure 1 Indicated by the arrows, including the following steps:

[0052] (1) After the carbon fiber bundle is unrolled, it is first sent into the sizing tank, and the carbon fiber bundle is subjected to sizing treatment through the pre-prepared fiber treatment agent;

[0053] (2) Send the carbon fiber bundle with slurry on the surface into the fiber opening and setting device, through the extrusion of the spreading roller in the fiber opening and setting device and the lubrication of the slurry, the carbon fiber bundle is evenly widened, and the unevenness in the carbon fiber bundle The fibers are also flattened; then the carbon fiber bundles are shaped by the hot rollers in the fiber opening and shaping device, so that the carbon fiber bundles maintain the widened filament width, and the moisture content of the carbon fiber bundles is less than 1%; the hot rollers shape the c...

Embodiment 2

[0076] Compared with Example 1, the carbon fiber bundle preparation method and equipment of this embodiment differ in that:

[0077] The formula used is Ct-1, that is, the water-based emulsion is TX-722-GJK, the ion-exchanged water is deionized water with a conductivity less than 1us / cm, and no penetrant is used.

[0078] The carbon fiber bundle obtained in this embodiment has an initial filament width of 4.5 mm, a winding filament width of 5.3 mm, and a filament bundle surface density of 150 g / m 2 , the moisture content of carbon fiber bundles is 0.83%, see Table 3 for details.

Embodiment 3

[0080] Compared with Example 1, the carbon fiber bundle preparation method and equipment of this embodiment differ in that:

[0081] In each spreading roller, the gap between the upper roller and the lower roller is 0.1mm;

[0082] The temperature of the heat roll was 175°C.

[0083] The carbon fiber bundle obtained in this embodiment has an initial filament width of 5.5 mm, a winding filament width of 8 mm, and a filament bundle surface density of 100 g / m 2 , the moisture content of carbon fiber bundles is 0.75%, see Table 3 for details.

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Abstract

The invention discloses a method and a device for preparing an ultrathin carbon fiber bundle. The method comprises the following steps: after starching a carbon fiber bundle, sequentially passing through yarn widening roller pairs and a hot roller of a splitting and sizing device to widen and size, putting the widened and sized carbon fiber bundle in a drying oven to dry, and obtaining a wound carbon fiber bundle, wherein the wound carbon fiber bundle keeps the widened width. The device comprises an unwinding roller, a starching tank, the splitting and sizing device, the drying oven and a winding roller, wherein the unwinding roller, the starching tank, the splitting and sizing device, the drying oven and the winding roller are sequentially arranged; multiple groups of yarn widening roller pairs, the hot roller and a horizontal regulating roller are sequentially arranged on the splitting and sizing device; a hydraulic lifting machine is arranged on each group of yarn widening roller pairs, each hydraulic lifting machine is fixed on a support, the two ends of the hot roller are fixedly connected with the support, and the two ends of a rotary shaft of the horizontal regulating roller are fixedly connected with the support; when the carbon fiber bundle is conveyed, the hot roller is fixed and does not rotate. According to the method and the device for preparing the ultrathin carbon fiber bundle, the ultra-thinning of the carbon fiber bundle and the online continuous fast production and the development of downstream ultra-light ultrathin products can be achieved.

Description

technical field [0001] The invention relates to the technical field of carbon fiber production, in particular to a method and equipment for preparing ultra-thin carbon fiber bundles. Background technique [0002] At present, the downstream application of carbon fiber is gradually popularized. At the same time, with the development of science and technology, carbon fiber products tend to develop in the direction of ultra-light, ultra-thin, and super-strong. [0003] The surface sizing and drying process of carbon fiber is a necessary process for carbon fiber production. After sizing, the water and resin on the surface of carbon fiber are liquid, and the liquid tends to shrink into small balls under the influence of surface tension. In the traditional carbon fiber production process, the carbon fiber is usually dried in a blast oven directly after the carbon fiber is sized. During this process, the water and liquid resin on the surface of the carbon fiber are easy to evaporate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B3/04D06B23/06D06B15/00D06M15/55D06M15/564D06M15/507D06M15/41D06M101/40
Inventor 谢怀玉宋威陈大华雷震陈涛袁建华张凡
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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