A kind of high temperature resistant monolithic hydrophobic thermal insulation material and its preparation method

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

Active Publication Date: 2018-06-01
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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  • A kind of high temperature resistant monolithic hydrophobic thermal insulation material and its preparation method
  • A kind of high temperature resistant monolithic hydrophobic thermal insulation material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Mix 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 fibers and 0.3 parts by mass of wood pulp to obtain a 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 a gel product is obtained after discharging; take 5 parts by mass of diatomite and 4 parts by mass of methyltriethoxysilane, stir and mix in a mixer for 2h, After stirring and mixing, a uniform second mixed solution is obtained; the second mixed solution and the gel product are stirred and mixed for 1 hour, and a uniform third mixed solution is obtained after stirring and mixing. Then, the third mixed hydraulic pressure is used to make a green body, which is autoclaved in an autoclave at 150° C. and 0.5 MPa for 8 hours. After the autoclave is completed, the green body is dried and samples are prepared to obtain a product.

[0065] Take 8...

Embodiment 2

[0071] Mix 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 fibers and 0.2 parts by mass of wood pulp to obtain a first mixed solution; set the temperature of the first mixed solution at 95°C , steam heating under a pressure of 0.7MPa, gel reaction for 6h, and a gel product is obtained after discharging; take 4 parts by mass of diatomite and 4 parts by mass of methyltriethoxysilane, stir and mix in a mixer for 2h, After stirring and mixing, a uniform second mixed solution is obtained; the second mixed solution and the gel product are stirred and mixed for 1 hour, and a uniform third mixed solution is obtained after stirring and mixing. Then, the third mixed hydraulic pressure is used to make a green body, which is autoclaved in an autoclave at 150° C. and 0.5 MPa for 8 hours. After the autoclave is completed, the green body is dried and samples are prepared to obtain a product.

[0072] Take 8 pa...

Embodiment 3

[0078]Mix 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 fibers and 0.25 parts by mass of wood pulp to obtain a first mixed solution; set the temperature of the first mixed solution at 96°C , steam heating under a pressure of 0.8MPa, gel reaction for 6h, and a gel product is obtained after discharging; take 4 parts by mass of diatomite and 4 parts by mass of methyltriethoxysilane, stir and mix in a mixer for 2h, After stirring and mixing, a uniform second mixed solution is obtained; the second mixed solution and the gel product are stirred and mixed for 1 hour, and a uniform third mixed solution is obtained after stirring and mixing. Then, the third mixed hydraulic pressure is used to make a green body, which is autoclaved in an autoclave at 150° C. and 0.5 MPa for 8 hours. After the autoclave is completed, the green body is dried and samples are prepared to obtain a product.

[0079] Take 8 p...

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Abstract

The invention discloses a high-temperature-resistant integral hydrophobic thermal insulation material and a preparation method thereof. The thermal insulation material overcomes the hydrophilic disadvantage of existing thermal insulation materials, has good hydrophobic effect, can be used normally at 450°C and still maintains a good temperature. Hydrophobic properties and other advantages make this thermal insulation material have huge economic and social benefits. Screen the best formula before preparation, gel under the best formula, and then use the carrier to mix the water-repellent agent into the insulation material to achieve internal hydrophobicity; then obtain the insulation material after pressing, autoclaving and drying operations, The coating liquid is applied on the surface of the thermal insulation material, and the coating liquid is cured after ultraviolet curing, and a hydrophobic film is attached to the surface of the thermal insulation material, thereby obtaining a high-temperature resistant integral hydrophobic thermal insulation material. The specific process steps are: 1. Ingredients; 2. Gel; 3. Internal hydrophobization; 3. Press molding; 4. Autoclave treatment; 5. Post-treatment; 6. Sol; 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 highest temperature of tobermullite calcium silicate is 650℃, and the bulk density is 220Kg / m 3 with 170Kg / m 3 Two types of models are prepared and produced by static method. The process flow is as follows: [0003] 1. Ingredients: CaO / SiO 2 Add quantitative diatomite and digested limestone, emulsified silicone oil, wood pulp, reinforcing fibers, 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: heating under the steam of 0.7-1.0Mpa pressure, the temperature is controlled at 90-100 ℃, and the temperature is kept for 5-8 hours. [0005] 3. Pressing: Pressing the slurry under a certain pressure press. [0006] 4. Steam curing: st...

Claims

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Application Information

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Patent Type & Authority Patents(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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