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Moisture-proof treatment method for fiber thermal insulation material

A technology of moisture-proof treatment and heat-insulating materials, applied in the direction of coating, etc., can solve the problem that it is difficult to form a uniform and continuous coating, and achieve the effect of scientific and reasonable moisture-proof treatment method, small influence of overall thickness, and high bonding strength

Pending Publication Date: 2021-10-22
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high porosity, it is difficult to form a uniform and continuous coating. In addition, in order to achieve good heat insulation and wave transmission performance, the fiber insulation material has a higher porosity and requires more stringent protection.

Method used

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  • Moisture-proof treatment method for fiber thermal insulation material
  • Moisture-proof treatment method for fiber thermal insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a moisture-proof treatment method for fiber heat insulation materials, including the following steps:

[0029] Mix organically modified aluminum sol, silica micropowder and ethanol with a mass ratio of 1:0.03:0.3 for 0.5 h to obtain a uniform first coating, wherein the silica micropowder includes 1000 mesh silica micropowder and 2000 mesh bismuth Silica powder;

[0030] Coat the above-mentioned first coating with a thickness of 20 μm on the surface of the fiber heat insulation material, and heat it at 80°C for 1 hour to cure it;

[0031] Stirring and mixing high-temperature-resistant silicone resin, silicon dioxide, and ethanol with a mass ratio of 1:0.003:0.5 for 0.5 hours to obtain a uniform second coating;

[0032] Coating the above-mentioned second coating with a thickness of 5 μm on the surface of the cured first coating, heating at 120° C. for 0.5 h to cure.

[0033] This embodiment also provides a fiber heat insulation material treated ...

Embodiment 2

[0035] This embodiment provides a moisture-proof treatment method for fiber heat insulation materials, including the following steps:

[0036]Mix organically modified aluminum sol, silica micropowder and isopropanol with a mass ratio of 1:0.2:0.8 for 2 hours to obtain a uniform first coating, wherein the silica micropowder includes 1000-mesh silica micropowder, 1500-mesh Silica fine powder and 2000 mesh silica fine powder;

[0037] Coat the above-mentioned first coating with a thickness of 35 μm on the surface of the fiber heat insulation material, and heat it at 120° C. for 1.5 hours to cure it;

[0038] Stirring and mixing high-temperature-resistant silicone resin, titanium dioxide, and ethanol with a mass ratio of 1:0.05:1 for 1 hour to obtain a uniform second coating;

[0039] Coat the surface of the cured first coating with the above-mentioned second coating with a thickness of 10 μm, and heat at 140° C. for 1.5 h to cure.

[0040] This embodiment also provides a fiber ...

Embodiment 3

[0042] This embodiment provides a moisture-proof treatment method for fiber heat insulation materials, including the following steps:

[0043] Mix organically modified aluminum sol, alumina micropowder and n-butanol with a mass ratio of 1:0.1:0.5 for 1 hour to obtain a uniform first coating, wherein silica micropowder includes 1500 mesh silica micropowder and 2000 mesh Silica powder;

[0044] Coat the above-mentioned first coating with a thickness of 50 μm on the surface of the fiber heat insulation material, and heat it at 100°C for 2 hours to cure it;

[0045] Stir and mix high temperature resistant silicone resin, organic color essence, and isopropanol with a mass ratio of 1:0.03:2 for 1 hour to obtain a uniform second coating;

[0046] Coat the surface of the cured first paint with the above-mentioned second paint with a thickness of 20 μm, and heat at 130° C. for 1 hour to cure it.

[0047] This embodiment also provides a fiber heat insulation material treated by the ab...

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Abstract

The invention discloses a moisture-proof treatment method for a fiber thermal insulation material. The method comprises the following steps: coating the surface of the fiber thermal insulation material with a first coating containing organic silicon modified sol, wherein the organic silicon modified sol is organic silicon modified aluminum sol and / or organic silicon modified silica sol; and after the first coating is heated and cured, coating the surface of the first coating with a second coating containing organic silicon resin, and making the second coating heated and cured. According to the moisture-proof treatment method, the coating which is uniform in structure, smooth in surface and compact can be prepared on the surface of the fiber thermal insulation material, the waterproof performance is good, and the dielectric property is not affected.

Description

technical field [0001] The invention belongs to the field of heat insulation materials, and in particular relates to a moisture-proof treatment method for fiber heat insulation materials. Background technique [0002] Fiber insulation materials are made by mixing inorganic ceramic fibers (such as quartz fibers, aluminum borosilicate fibers, alumina fibers, etc.) High porosity, due to capillary action, makes the fiber insulation material very easy to absorb water, which seriously affects its heat insulation performance and dielectric performance. Therefore, it is generally necessary to carry out moisture-proof treatment on the fiber heat insulation material during preparation. [0003] In recent years, with the development of the aerospace field, the requirements for material properties are getting higher and higher. For example, in radome, antenna window, etc., it is necessary to develop materials with both wave-transmitting and heat-insulating functions. High-porosity fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/89C09D1/00C09D7/61C09D183/04
CPCC04B41/52C04B41/89C04B41/009C09D1/00C09D7/61C09D183/04C08K2003/2241C08K3/36C08K3/22C04B35/80C04B41/50C04B41/46C04B41/4535C04B41/495
Inventor 孙成功周长灵刘玉建程洪浩张斌闫诊张晔高春洁刘娟赵帅
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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