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Manufacturing method of high-performance thermal-insulating composite carbon fiber plate

A composite carbon fiber and manufacturing method technology, applied in the direction of textiles and papermaking, etc., can solve the problems of low carbon fiber hard felt, poor oxidation resistance, high binder content, etc., to achieve not easy to crack, good self-supporting performance, and low production cost Effect

Active Publication Date: 2017-06-30
辽宁奥亿达新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbon fiber hard felt produced by the dipping molding process has the disadvantages of high energy consumption, low strength between layers of carbon fiber hard felt, easy cracking, low service life, high binder content, and poor oxidation resistance.

Method used

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  • Manufacturing method of high-performance thermal-insulating composite carbon fiber plate
  • Manufacturing method of high-performance thermal-insulating composite carbon fiber plate
  • Manufacturing method of high-performance thermal-insulating composite carbon fiber plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] In the present embodiment, the manufacturing method of the high-performance composite carbon fiber insulation board is as follows:

[0071] 1) Prepare chopped carbon fibers; chop the pitch-based carbon fibers to obtain chopped carbon fibers with an average length of 40 mm;

[0072] 2) preparing ground carbon fibers; grinding the pitch-based carbon fibers to obtain ground carbon fibers with an average length of 100 μm;

[0073] 3) using a cyclone separator to fully mix the chopped carbon fiber and the ground carbon fiber according to the weight ratio of 60:40 to obtain the mixed carbon fiber;

[0074] 4) Mix the mixed carbon fiber with the organic binder phenolic resin and solvent ethanol in a weight ratio of 100:30:70 to obtain a carbon fiber mixture; put the carbon fiber mixture into a mesh bag, pass through a mesh with a mesh size of 30 μm After the initial filtration of the bag, use hot air at 50°C to blow directly into the mesh bag for 30 minutes to completely vola...

Embodiment 2

[0082] In order to increase the anti-airflow erosion and anti-oxidation properties of the composite carbon fiber insulation board 9, and further improve its service life; the composite carbon fiber insulation board 9 prepared in [Example 1] is subjected to surface treatment, and the specific steps of the surface treatment are as follows:

[0083] 1) The composite carbon fiber insulation board 9 is machined for surface polishing treatment to make the surface smooth;

[0084]2) Brush the adhesive agent on the upper and lower surfaces of the composite carbon fiber insulation board 9 after the polishing treatment, respectively, for 3 to 6 times to form the adhesive layer 10, and the adhesive agent can be conventionally used;

[0085] 3) Put the composite carbon fiber insulation board 9 coated with the adhesive layer 10 into a heating furnace, raise the temperature to 240° C. at a heating rate of 5° C. / min, keep the temperature at this temperature for 1 hour, and cure the adhesive l...

Embodiment 3

[0088] In the present embodiment, the manufacturing method of the high-performance composite carbon fiber insulation board is as follows:

[0089] 1) Prepare chopped carbon fibers; chop the pitch-based carbon fibers to obtain chopped carbon fibers with an average length of 80 mm;

[0090] 2) preparing ground carbon fibers; grinding the pitch-based carbon fibers to obtain ground carbon fibers with an average length of 180 μm;

[0091] 3) Using a cyclone separator to fully mix the chopped carbon fiber and the ground carbon fiber according to the weight ratio of 50:50 to obtain the mixed carbon fiber;

[0092] 4) Mix the mixed carbon fiber with the organic binder phenolic resin and solvent ethanol in a weight ratio of 100:55:75 to obtain a carbon fiber mixture; put the carbon fiber mixture into a mesh bag, pass through a mesh with a mesh size of 30 μm After the bag is pre-filtered, hot air at 60°C is blown directly into the mesh bag for 30 minutes to completely evaporate the sol...

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Abstract

The invention relates to a manufacturing method of a high-performance thermal-insulating composite carbon fiber plate. Mixed carbon fibers composed of chopped carbon fibers and milled carbon fibers are mixed with an organic binder and a solvent, the solvent is removed, composite carbon fibers coated with the organic binder on the surfaces are mixed with water and a dispersant to form carbon fiber mixed slurry, and a thermal-insulating composite carbon fiber plate prefabricated product is prepared through vacuum suction molding; the thermal-insulating composite carbon fiber plate prefabricated product is dewatered in a heat steam or hot air heating manner, and non-melting and non-dissolution treatment is completed; the finished product, namely, the thermal-insulating composite carbon fiber plate is obtained through carbonization or graphitization treatment. The prepared thermal-insulating composite carbon fiber plate has the characteristics of good thermal insulation, good oxidation resistance, small thermal capacity and high strength; a manufacturing process is simple, the cost is low, the shape and the size of the finished product are controllable, and the density is adjustable; the finished product has low probability of cracking, good self-supporting property and long service life; after surface treatment, the high-performance thermal-insulating composite carbon fiber plate can also has excellent oxidation resistance, and the service life can be further prolonged.

Description

technical field [0001] The invention relates to the technical field of manufacturing heat preservation boards for high-temperature furnaces, in particular to a method for manufacturing high-performance composite carbon fiber heat preservation boards. Background technique [0002] With the advancement of science and technology, military, national defense, solar energy, semiconductors, heat treatment and other fields are developing rapidly, and the development of these fields involves the use of thermal insulation materials; especially in recent years, the rapid development of solar energy and semiconductors, the demand for thermal insulation materials It is more prominent, and the requirements for thermal insulation materials are getting higher and higher, not only requiring energy saving and consumption reduction, but also requiring high oxidation resistance. These requirements are also continuously promoting the rapid development of the field of thermal insulation materials....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/528C04B35/52C04B35/622C04B35/634C04B41/85D21J3/00
CPCD21J3/00C04B35/522C04B35/528C04B35/622C04B35/63476C04B35/83C04B41/5001C04B41/85C04B2235/9607C04B2235/77
Inventor 陈惠龙郑淑云王红伟张作桢
Owner 辽宁奥亿达新材料股份有限公司
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