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Pitch-based carbon fiber non-woven felt insulation cylinder and manufacturing method thereof

A technology of pitch-based carbon fiber and a manufacturing method, applied in the field of thermal insulation materials, can solve the problems of high energy consumption and large thermal conductivity, and achieve the effects of good thermal insulation, good self-support and long service life

Active Publication Date: 2016-01-20
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

Needle felt hardened products have longitudinally stretched carbon fiber tows, so some carbon fibers are parallel to the direction of heat flow, so the thermal conductivity is relatively large, and the energy consumption is relatively large compared to two-dimensional structure insulation materials

Method used

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  • Pitch-based carbon fiber non-woven felt insulation cylinder and manufacturing method thereof
  • Pitch-based carbon fiber non-woven felt insulation cylinder and manufacturing method thereof
  • Pitch-based carbon fiber non-woven felt insulation cylinder and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0057] [Example 1] The manufacturing process of pitch carbon fiber non-woven felt insulation cylinder is as follows:

[0058] The pitch is spun to form a non-woven felt after being collected, then pre-oxidized, and then carbonized to obtain a pitch-based carbon fiber non-woven felt 4; under the rotation of the cylinder shaft 6, the pitch carbon fiber non-woven felt 4 is put into the organic Fully impregnated in the binder mixed solution pool 3 of binder+solvent, the organic binder is a phenolic resin, and the solvent is ethanol; the weight ratio of the binder mixed solution is phenolic resin:ethanol=40:60, then let The pitch-based carbon fiber non-woven felt 4 is squeezed out of excess binder through the extrusion roller 2, the pitch-based carbon fiber non-woven felt 4 is placed on the non-woven fabric, and the pitch-based carbon fiber non-woven felt 4 is tightly packed by the non-woven fabric. Winding on the inner mold 1, the molding is completed when the thickness reaches 12...

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Abstract

The invention relates to a pitch-based carbon fiber non-woven felt thermal insulation cylinder and a manufacturing method thereof. The pitch-based carbon fiber non-woven felt thermal insulation cylinder includes a pitch-based carbon fiber non-woven felt thermal insulation cylinder body, which is composed of pitch-based carbon fiber non-woven felt and organic binder. A cylindrical body that is mixed with a mixture of + solvent and then shaped, solidified, and carbonized / graphitized. Pitch-based carbon fiber non-woven felt is made from pitch by spinning, pre-oxidation and carbonization. Pitch-based carbon fiber non-woven felt, adhesive The weight ratio of binder and solvent is: 100:30~200:18~600; the inner and outer surfaces of the pitch-based carbon fiber non-woven felt insulation cylinder body are polished and then painted with a carbon material binder layer and pasted with graphite paper. / carbon fiber cloth. Compared with the existing technology, the beneficial effects of the present invention are: 1) good thermal insulation; 2) high density, high strength, and good self-supporting properties; 3) surface treatment, anti-oxidation, anti-airflow erosion, long service life Long; 4) The process is simple, the production cost is low, the product is not easy to crack and has good stability.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a pitch-based carbon fiber non-woven felt insulation cylinder used in crystal growth furnaces, crystal pulling devices, ceramic sintering furnaces, vacuum high-temperature heat treatment furnaces, and a manufacturing method thereof. Background technique [0002] At present, the carbon fiber heat insulation materials used in domestic vacuum high-temperature furnaces are divided into two categories: one is carbon fiber soft felt, and the other is carbon fiber hard felt. [0003] Carbon fiber soft felt insulation materials generally use soft carbon felt (needle-punched felt). This structure of heat insulation materials has disadvantages such as low strength, easy deformation, easy pulverization, poor heat insulation effect, and time-consuming and labor-intensive disassembly and installation. The carbon fiber hard felt heat insulation material overcomes the short...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B1/02B32B1/00
Inventor 陈惠龙郑淑云王红伟张作桢朴成军李里崔欣
Owner 辽宁奥亿达新材料股份有限公司
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