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Pitch-based carbon fiber nonwoven felt insulation board and manufacturing method thereof

A pitch-based carbon fiber and non-woven felt technology is applied in the field of thermal insulation materials, which can solve the problems of high energy consumption and high thermal conductivity, and achieve the effects of good thermal insulation, good self-support and long service life.

Active Publication Date: 2014-12-24
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 nonwoven felt insulation board and manufacturing method thereof
  • Pitch-based carbon fiber nonwoven felt insulation board and manufacturing method thereof
  • Pitch-based carbon fiber nonwoven felt insulation board and manufacturing method thereof

Examples

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Embodiment 1

[0063] [Example 1] The manufacturing process of pitch carbon fiber non-woven felt insulation board is as follows:

[0064] 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 1; under the rotation of the cylinder shaft 4, the pitch carbon fiber non-woven felt 1 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, and then The pitch-based carbon fiber non-woven felt 1 is squeezed out of the excess adhesive through the extrusion roller 2, and then the pitch-based carbon fiber non-woven felt 1 is cut according to the required size, and then laid flat on the lower mold 7 after stacking, and the molding is completed when the thickness reaches 70mm , and then the upper mold 5 is fixed on the ...

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Abstract

The invention relates to a pitch-based carbon fiber nonwoven felt insulation board and a manufacturing method of the pitch-based carbon fiber nonwoven felt insulation board. The pitch-based carbon fiber nonwoven felt insulation board comprises a pitch-based carbon fiber nonwoven felt insulation board main body which is a plate obtained by cutting, laminating, forming, curing, carbonizing / graphitizing pitch-based carbon fiber nonwoven felt after being mixed with a mixed liquid of an organic binder and a solvent, and the pitch-based carbon fiber nonwoven felt is obtained by carrying out spinning, preoxidation and carbonization on pitch. Carbon material binder layers and graphite paper / carbon fiber sheets are in sequence arranged on the main body and the lower surfaces of the pitch-based carbon fiber nonwoven felt insulation board from inside to outside, and a finished product is cured and carbonized. Compared with the prior art, the invention has the benefits that (1) thermal insulation and heat insulation properties are good; (2) the density is 0.1-0.4 g / cm<3>, the strength is high and the self-supporting property is good, (3) oxidation and air flow scouring are resisted because surface treatment is carried out to facilitate a long service life; (4) the process is simple, the production cost is low, the thickness can be decided once, and the product is not easy to crack and good in 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 thermal insulation board used in crystal growth furnaces, crystal pulling devices, ceramic sintering furnaces, vacuum high-temperature heat treatment furnaces and other 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 mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83
Inventor 郑淑云陈惠龙朴成军王红伟张作桢李里崔欣
Owner 辽宁奥亿达新材料股份有限公司
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