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Coating agent for thermally insulating material and laminate for thermally insulating material using the same

A technology of thermal insulation materials and coating agents, applied in the direction of coatings, layered products, fireproof coatings, etc., can solve problems such as low oxidation resistance and mechanical strength, insufficient surface smoothness and surface gloss, peeling, etc.

Active Publication Date: 2008-04-16
KUREHA KAGAKU KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the coating agents described in Document 2 and Document 3, the workability is not sufficient, and the surface smoothness and surface gloss of the coated surface of the coating layer for heat insulating materials obtained after firing are not sufficient.
In addition, in the coating for heat insulating materials obtained by firing such a coating agent, there are also the problems of peeling off of the coating for heat insulating materials described above, and the dust-proof property and oxidation resistance of the coating for heat insulating materials. The problem of low sex and mechanical strength
Furthermore, with regard to the coating agents described in Document 2 and Document 3, since the solvent of the coating agent is an organic liquid, there are also problems in terms of safety and sanitation in the working environment.

Method used

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  • Coating agent for thermally insulating material and laminate for thermally insulating material using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] 〔Preparation of carbonized molded body〕

[0137] With respect to 100 parts by mass of a pitch-based carbon fiber felt (manufactured by Kureha Chemical Industry Co., Ltd., "Kurekafelt F-110") with an average fiber length of 50 mm, a phenol resin-based impregnating solution (manufactured by Showa Polymer Co., Ltd., trade name " 44 parts by mass of シヨウノール BRS-3896") was laminated in six layers in a flat plate to obtain a laminate. Next, the laminate thus obtained was press-molded under conditions of a temperature of 150° C. and a pressure of 0.015 MPa to cure the resin. Then, the laminate obtained by curing the resin in this way was further subjected to graphitization treatment in vacuum at a temperature of 2000° C. for 1 hour to obtain a felt with a bulk density of 0.16 g / cm 3 flat carbon fiber felt laminate (carbonized molded body: thickness 48mm).

[0138] [Preparation of coating agent for thermal insulation materials]

[0139] Using 100 parts by mass of furan resin ...

Embodiment 2

[0144] Carry out in the same manner as the preparation sequence of the carbonized molded body in Example 1, and carry out graphitization treatment at 2000° C. so that its bulk density reaches 0.12 g / cm 3 , except using the thus prepared bulk density of 0.12 g / cm 3 The carbon fiber felt laminated body (carbonized molded body) to replace the bulk density prepared in Example 1 is 0.16g / cm 3 Except for the carbon fiber felt laminated body, the same procedure as in Example 1 was carried out to produce a laminated body for a heat insulating material and a sample used in each test. The surface of the coating layer for a heat insulating material laminated on the thus obtained laminate for a heat insulating material was smooth and glossy.

Embodiment 3

[0146] Carry out in the same manner as the preparation sequence of the carbonized molded body in Example 1, and carry out graphitization treatment at 2000° C. so that its bulk density reaches 0.4 g / cm 3 , except using the thus prepared bulk density of 0.4 g / cm 3 The carbon fiber felt that replaces the bulk density prepared in embodiment 1 is 0.16g / cm 3 Except for the carbon fiber felt laminated body, the same procedure as in Example 1 was carried out to prepare a laminated body for a heat insulating material and a sample used in each test. The surface of the coating layer for a heat insulating material laminated on the thus obtained laminate for a heat insulating material was smooth and glossy.

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Abstract

Provided are a coating agent for a thermally insulating material which can form a laminate for a thermally insulating material having a coating layer of a surface being smooth and lustrous, being excellent in the prevention of generation of a dust, exhibiting high mechanical strength as a laminate and which further exhibits excellent workability in a coating operation; and a carbonized laminate and a laminate for a thermally insulating material using the above coating agent. A coating agent for a thermally insulating material, which comprises (1) a carbonized material having a carbonization degree of 40 % or more, (2) a vein graphite, (3) a paste and (4) a liquid agent which dissolves the paste and disperses or dissolves the carbonized material; and a laminate which is formed by applying the above coating agent for a thermally insulating material on the surface of a carbonized formed article having a bulk density of 0.1 to 0.8 g / cm3, followed by carbonizing.

Description

technical field [0001] The present invention relates to a coating layer for a heat insulating material, a laminate for a heat insulating material, a coating agent for a heat insulating material, and a method for producing a coating agent for a heat insulating material. Background technique [0002] Carbon fiber-based molded insulation materials (laminates for insulation materials) formed by molding carbon fibers are widely used as vacuum furnaces and atmospheres for heat treatment of metals, sintering of fine ceramics, and pulling of various crystals. Insulation materials for high temperature furnaces such as furnaces. As a method of manufacturing such laminates for heat insulating materials, in order to improve heat insulating properties, prevent carbon fiber powder from scattering, and prevent penetration of gas generated by sintered metal, etc., carbonization molding of carbon fiber mats exposed to high temperatures has been used conventionally. Methods of attaching surf...

Claims

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Application Information

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IPC IPC(8): C09D5/18B32B7/02B32B9/00C09D7/12F16L59/02
CPCC09D5/18C09D171/14
Inventor 游佐胜弘涩谷幸广
Owner KUREHA KAGAKU KOGYO KK
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