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Preparation method of high-density carbon fiber plate

A carbon fiber plate, high -density technology, is used in the field of carbon fiber material, which can solve problems such as poor repairs of carbon/carbon composite materials, low peeling strength of high -density plate layer, and high cost of thermal field materials. The effect of high, short production cycle

Active Publication Date: 2017-02-22
XIAN KANGBEN MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cycle of the former is too long, and there are many uncontrollable factors in the deposition process of the CVD furnace, resulting in low product yield. Although the cycle of the latter is short, the high-density sheet produced has low interlayer peeling strength, is easy to delaminate, and has a short service life. Otherwise, the repairability of carbon / carbon composite materials is poor, and frequent replacement leads to high cost of thermal field materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the high-density carbon fiber plate of the present embodiment comprises the following steps:

[0023] Step 1. Lay the multi-layer carbon fiber mesh tire and the multi-layer carbon fiber fabric according to the method of layer-by-layer alternate layer laying to obtain a carbon fiber composite body, and then perform multiple acupuncture on the carbon fiber composite body to obtain a carbon fiber needle-punched carbon fiber composite body with a thickness of 16mm. The needle punching includes front needle punching and reverse needle punching, wherein the front needle punching refers to needle insertion from the upper surface of the carbon fiber composite body, and the reverse needle punching refers to needle insertion from the lower surface of the carbon fiber composite body;

[0024] In this embodiment, the preparation method of the carbon fiber mesh tire is as follows: cutting polyacrylonitrile-based carbon fiber filaments into chopped carbon fib...

Embodiment 2

[0034] The preparation method of the high-density carbon fiber plate of the present embodiment comprises the following steps:

[0035]Step 1. Lay the multi-layer carbon fiber net tire and the multi-layer carbon fiber fabric according to the method of layer-by-layer alternate laying to obtain a carbon fiber composite body, and then perform multiple acupuncture on the carbon fiber composite body to obtain a carbon fiber needle-punched carbon fiber composite body with a thickness of 15mm. The needle punching includes front needle punching and reverse needle punching, wherein the front needle punching refers to needle insertion from the upper surface of the carbon fiber composite body, and the reverse needle punching refers to needle insertion from the lower surface of the carbon fiber composite body;

[0036] In this embodiment, the preparation method of the carbon fiber mesh tire is as follows: cutting polyacrylonitrile-based carbon fiber filaments into chopped carbon fibers with...

Embodiment 3

[0046] The preparation method of the high-density carbon fiber plate of the present embodiment comprises the following steps:

[0047] Step 1. Lay the multi-layer carbon fiber mesh tire and multi-layer carbon fiber fabric according to the method of layer-by-layer alternate laying to obtain a carbon fiber composite body, and then perform acupuncture on the carbon fiber composite body several times to obtain carbon fiber with a thickness of 15mm-20mm. Acupuncture parts; the needling includes front needling and back needling, wherein front needling refers to inserting needles from the upper surface of the carbon fiber composite, and back needling refers to inserting needles from the lower surface of the carbon fiber composite;

[0048] In this embodiment, the preparation method of the carbon fiber mesh tire is as follows: cutting polyacrylonitrile-based carbon fiber filaments into chopped carbon fibers with a length of 70 mm, and processing them into a surface density of 50 g / m th...

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Abstract

The invention provides a preparation method of a high-density carbon fiber plate. The preparation method comprises the following steps: firstly, multi-layer carbon fiber web and multi-layer carbon fiber fabrics are alternately laid layer by layer, a carbon fiber composite is obtained, then the carbon fiber composite is subjected to repeated front needling and reverse needling, and a carbon fiber needled component is obtained; secondly, glue impregnation is performed, and prepreg is obtained; thirdly, a formed product is obtained through curing molding; fourthly, carbonization is performed, and the high-density carbon fiber plate with the density being 1.5-1.6 g / cm<3> is obtained. The preparation method has simple preparation process, short production cycle, high process controllability and high yield, and can be repeatedly used in the thermal field environment; the prepared high-density carbon fiber plate has the advantages of being high in density, not prone to layering and outstanding in overall product quality, and is a typical low-cost and high-performance thermal field material.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber materials, and in particular relates to a method for preparing high-density carbon fiber plates. Background technique [0002] As a key corrosion-resistant component in high-temperature-resistant equipment, carbon / carbon plates have the characteristics of strong acid and alkali resistance, high mechanical properties, and long replacement cycles, and can completely replace graphite and ceramic material components. It can be widely used in the field of chemical high temperature equipment. [0003] High-temperature-resistant, high-strength, high-density carbon fiber sheets are usually formed by carbonizing basic carbon fiber materials through needle punching, repeated deposition in CVD furnaces, or carbon fiber fabrics bonded layer by layer in vacuum dipping and then placed in a carbonization furnace. The production cycle of the former is too long, and there are many uncontrollable factors in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/84
CPCC04B35/806C04B35/83C04B2235/3826C04B2235/425C04B2235/428C04B2235/48C04B2235/77C04B2235/94
Inventor 侯建荣闵满仓于晓丽岳鸿飞赵景飞赵华民张勇
Owner XIAN KANGBEN MATERIAL