High temperature resistant overall hydrophobic insulation material and preparation method thereof

A hydrophobic thermal insulation material and high temperature resistant technology, applied in the field of thermal insulation materials, can solve the problems of low mechanical strength, unsatisfactory hydrophobic effect, and failure of hydrophobic effect of calcium silicate thermal insulation materials, achieve excellent product competitiveness, overcome hydrophobicity and other problems. The effect of poor water performance and improved hydrophobicity

Active Publication Date: 2015-10-28
ZHEJIANG ASKER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Calcium silicate insulation products produced by the above method have low mechanical strength, high density, and unsatisfactory hydrophobic effect. They can only be used below 200°C. The water repellent will decompose and denature when the temperature exceeds the temperature, thus making the hydrophobic effect invalid. During the installation process, the product usage rate is low, the installation is not compact, and the insulation effect is not good.

Method used

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  • High temperature resistant overall hydrophobic insulation material and preparation method thereof
  • High temperature resistant overall hydrophobic insulation material and preparation method thereof
  • High temperature resistant overall hydrophobic insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Take 15 parts by mass of diatomite, 10 parts by mass of limestone emulsion, 48 parts by mass of water, 0.6 parts by mass of reinforcing fiber and 0.3 parts by mass of wood pulp and mix to obtain the first mixed solution; the temperature of the first mixed solution is at 97°C , steam heating under the pressure of 1.0MPa, gel reaction for 6h, and obtain a gel product after discharging; take 5 parts by mass of diatomaceous earth and 4 parts by mass of methyltriethoxysilane, stir and mix in a mixer for 2h, After stirring and mixing, a uniform second mixed liquid is obtained; the second mixed liquid and the gel product are stirred and mixed for 1 hour, and after stirring and mixed, a uniform third mixed liquid is obtained. Then the third mixed hydraulic pressure was made into a green body, which was autoclaved in an autoclave at 150° C. and 0.5 MPa for 8 hours. After the autoclaving was completed, the green body was dried and a sample was prepared to obtain a product.

[006...

Embodiment 2

[0071] Take 16 parts by mass of diatomite, 12 parts by mass of limestone emulsion, 45 parts by mass of water, 0.5 parts by mass of reinforcing fiber and 0.2 parts by mass of wood pulp and mix to obtain the first mixed solution; the temperature of the first mixed solution is at 95°C , steam heating under the pressure of 0.7MPa, gel reaction for 6h, and obtain a gel product after discharging; take 4 mass parts of diatomaceous earth and 4 mass parts of methyltriethoxysilane, stir and mix in a mixer for 2h, After stirring and mixing, a uniform second mixed liquid is obtained; the second mixed liquid and the gel product are stirred and mixed for 1 hour, and after stirring and mixed, a uniform third mixed liquid is obtained. Then the third mixed hydraulic pressure was made into a green body, which was autoclaved in an autoclave at 150° C. and 0.5 MPa for 8 hours. After the autoclaving was completed, the green body was dried and a sample was prepared to obtain a product.

[0072] Get...

Embodiment 3

[0078]Take 17 parts by mass of diatomite, 11 parts by mass of limestone emulsion, 46 parts by mass of water, 0.56 parts by mass of reinforcing fiber and 0.25 parts by mass of wood pulp to obtain the first mixed solution; the temperature of the first mixed solution is at 96°C , steam heating under the pressure of 0.8MPa, gel reaction for 6h, and obtain a gel product after discharging; take 4 mass parts of diatomaceous earth and 4 mass parts of methyltriethoxysilane, stir and mix in a mixer for 2h, After stirring and mixing, a uniform second mixed liquid is obtained; the second mixed liquid and the gel product are stirred and mixed for 1 hour, and after stirring and mixed, a uniform third mixed liquid is obtained. Then the third mixed hydraulic pressure was made into a green body, which was autoclaved in an autoclave at 150° C. and 0.5 MPa for 8 hours. After the autoclaving was completed, the green body was dried and a sample was prepared to obtain a product.

[0079] Get 8 mass...

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Abstract

The present invention discloses a high temperature resistant overally hydrophobic insulation material and a preparation method thereof. The material overcomes the disadvantage of hydrophilicity of the existing insulation materials, has good hydrophobic effect, can be used normally at 450 DEG C and still maintain good hydrophobic properties, so that the insulation material has huge economic and social benefits. An optimum formula is selected before preparation; gelation is conducted according to the optimum formula, and then a hydrophobic agent by means of a carrier is incorporated into the insulation material, so as to achieve internal hydrophobization; then pressing, autoclaving and drying are carried out to obtain the insulation material; and a coating liquid is applied on the surface of the insulation material; after curing UV and coating liquid curing, a hydrophobic film is attached to the surface of the insulation material, thereby obtaining the high temperature overall hydrophobic insulation material. The process comprises the specific steps of: 1, material preparation; 2, gelation; 3, compacting and moulding; 4, steam autoclaving treatment; 5, posttreatment; 6, sol; and 7, film coating.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a high-temperature resistant integral hydrophobic thermal insulation material and a preparation method thereof. Background technique [0002] The maximum service temperature of tobermolite type calcium silicate is 650℃, and the bulk density is 220Kg / m 3 with 170Kg / m 3 Two models are prepared and produced by static method, and the process flow is as follows: [0003] 1. Ingredients: CaO / SiO 2 Add quantitative diatomite and digested limestone, emulsified silicone oil, wood pulp, reinforcing fiber, etc. according to a certain molar ratio and water-solid ratio. CaO / SiO 2 The molar ratio is controlled at 0.76-0.83. [0004] 2. Gel reaction: heat under steam with a pressure of 0.7-1.0Mpa, control the temperature at 90-100°C, and keep warm for 5-8 hours. [0005] 3. Pressing: The slurry is pressed into shape under a certain pressure press. [0006] 4. Steaming: Steamin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B41/65
Inventor 裘益奇裘茂法雷泉兴
Owner ZHEJIANG ASKER TECH
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