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A kind of carbon fiber composite ball and preparation method thereof

A carbon fiber and composite ball technology, applied in the field of carbon fiber composite ball and its preparation, can solve the problems of easy to drop sharp fibers, easy to form agglomerates, difficult to disperse, etc., achieve wide application space, suitable for large-scale continuous production, simple preparation process Effect

Inactive Publication Date: 2015-09-09
SICHUAN CHUANGYUE CARBON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a carbon fiber composite ball and its preparation method, which solves the technical difficulties in the prior art that the carbon fiber composite ball is difficult to disperse, easy to form agglomerates, easy to drop sharp fibers, and inconvenient to form.

Method used

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  • A kind of carbon fiber composite ball and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Fiber crushing and mixing: 100 parts of chopped carbon fiber with a length of 3mm, add 10 parts of asphalt powder with a softening point of 280°C, and 7 parts of polyvinyl alcohol fiber with a length of 3mm, crush and mix to obtain a fiber length of 0.06-1.5mm Mixture;

[0034] (2) Spheronization and granulation: take 100 parts of crushed mixture, add 10 parts of liquid binder with a concentration of 5%, spheronize and coat into balls, and sieve to obtain carbon fiber raw material balls with a diameter of 1.7-2.36 mm;

[0035] (3) Secondary spheronization: Take 100 parts of carbon fiber raw material balls and evenly spray 20 parts of thermosetting resin with a concentration of 15%. After the thermosetting resin is completely absorbed, add 5 parts of 200-mesh pitch powder and 10 parts of 200-mesh coke powder accordingly , spheronize and sieve excess powder to obtain carbon fiber secondary processing raw material balls;

[0036] (4) Curing: Curing in air atmosphere a...

Embodiment 2

[0042] (1) Fiber crushing and mixing: 100 parts of 10mm chopped carbon fiber, 10 parts of nitrile rubber powder, 7 parts of 10mm pre-oxidized fiber, crushed and mixed to obtain a crushed mixture with a fiber length of 0.08-2.7mm;

[0043] (2) Spheronization and granulation: take 100 parts of crushed mixture, add 20 parts of liquid binder with a concentration of 10%, spheronize and wrap into balls, and sieve to obtain carbon fiber raw material balls with a diameter of 2-3.35 mm;

[0044] (3) Secondary spheronization: Take 100 parts of carbon fiber raw material balls, evenly spray 45 parts of thermosetting resin with a concentration of 20%, after the thermosetting resin is completely absorbed, add 10 parts of 200 mesh pitch powder accordingly, and add 15 parts of carbon black, Spheronize and sieve excess powder;

[0045] (4) Curing: Curing in air atmosphere at 200°C for 4 hours;

[0046] (5) Carbonization: carbonization in nitrogen atmosphere at 800°C for 30 minutes;

[0047] ...

Embodiment 3

[0051] (1) Fiber crushing and mixing: 100 parts of chopped carbon fibers with a length of 10 mm, 2 parts of phenolic resin powder, 10 parts of polyvinyl alcohol fibers with a length of 3 mm, crushed and mixed to obtain a crushed mixture with a fiber length of 0.05-3 mm;

[0052] (2) Spheronization and granulation: take 100 parts of crushed mixture, add 10 parts of liquid binder with a concentration of 5%, spheronize and coat into balls, and sieve to obtain carbon fiber raw material balls with a diameter of 2.5-3.5 mm;

[0053] (3) Secondary spheronization: Take 10 parts of carbon fiber raw material balls and evenly spray 2 parts of thermosetting resin with a concentration of 5%. Mesh graphite powder, round and sieve excess powder.

[0054] (4) Curing: Curing in air atmosphere at 220°C for 2 hours;

[0055] (5) Carbonization: carbonization in nitrogen atmosphere at 800°C for 30 minutes;

[0056] (6) Graphitization: Graphitization in an argon atmosphere at 2200°C for 30 minute...

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Abstract

The invention discloses a carbon fiber composite ball and a preparation method thereof. The carbon fiber composite ball consists of a hard carbon fiber ball and a resin carbon layer covering the surface of the hard carbon fiber ball. The preparation method for the carbon fiber composite ball consists of the steps of fiber crushing and mixing; balling granulation; secondary balling granulation; solidification; carbonization and graphitization. The carbon fiber composite ball and the preparation method thereof have the characteristics that chopped carbon fibers or ground carbon fibers are sized, so that transportation and use are facilitated; due to high-carbon-fiber content balling, a well-developed porous structure is provided; the carbon fiber composite ball can be applied to the aspects of adsorption, heat preservation, a phase change energy storage carrier and the like; the field of application of the chopped carbon fibers is expanded; the preparation technology is relatively simple; and particularly compared with a hard carbon fiber heat preservation felt, the carbon fiber composite ball is suitable for large-scale continuous production.

Description

technical field [0001] The invention relates to a carbon fiber composite ball and a preparation method thereof. Background technique [0002] Carbon fiber has excellent mechanical properties, acid and alkali resistance, high temperature resistance and excellent friction properties, etc. At the same time, carbon fiber also has the disadvantages of surface inertness, low flexural and compressive strength, especially when chopped carbon fiber is used for downstream applications. It is easy to form agglomerates and cause uneven dispersion, and it is also easy to cause physical damage to operators and users due to its sharp fracture. Chopped and ground carbon fiber is more abundantly produced as a low-cost by-product as the carbon fiber industry is booming. [0003] For example, the insulation material of high-temperature industrial furnaces is directly filled with powdered carbon fiber, which has a large degree of freedom in shape, and can be supplemented according to consumpti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/83C04B35/622
Inventor 伍孝徐青罗松
Owner SICHUAN CHUANGYUE CARBON MATERIAL
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