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A kind of heat insulation coating and preparation method thereof

A technology of thermal insulation coatings and thermal insulation fillers, applied in the direction of coatings, etc., can solve the problems of easy shedding of hydrophobic and oleophobic groups, limitation of reactivity, and inappropriate modification of thermal insulation coatings, etc., to improve reactivity and preparation cycle. The effect of short, excellent adhesion

Active Publication Date: 2021-03-09
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modification methods of the above two patents are hydrophobic modification in the liquid phase at room temperature. The disadvantage is that the reaction is carried out at room temperature, and the reactivity is limited. Modifications in thermal barrier coatings

Method used

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  • A kind of heat insulation coating and preparation method thereof
  • A kind of heat insulation coating and preparation method thereof
  • A kind of heat insulation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Proportion:

[0044] Glass cenospheres 200g

[0045] Tridecafluorooctyltriethoxysilane 20g

[0046] The preparation process of amphiphobic packing is as follows:

[0047] 1. Weigh 200g of glass hollow microspheres, place them in a container, heat up to 100-120°C in an oven, keep warm for 2-3 hours, remove the water vapor adsorbed on the surface of the hollow microspheres, and then raise the temperature to 5-10°C / min. 300℃, keep warm for 4~5h;

[0048] 2. Weigh 20g of tridecafluorooctyltriethoxysilane and place it in a boiling drier with a reflux device at the top. Adjust the temperature of the hot air to 150°C. After the temperature is stable, pour it into the above-mentioned heated glass hollow micro Beads are discharged after 4 hours of reaction in the boiling dryer, and the filler with surface amphiphobic properties is obtained.

[0049] The amphiphobic filler obtained in this example is added to the KH-HP-RTV room temperature vulcanizing silicone rubber system t...

Embodiment 2

[0057] Proportion:

[0058] Silica hollow microspheres 500g

[0059] Heptadecafluorodecyltriethoxysilane 75g

[0060] The preparation process of amphiphobic packing is as follows:

[0061] 1. Weigh 500g of silica hollow microspheres, place them in a container, heat up to 100-120°C in an oven, keep warm for 2-3 hours, remove the water vapor adsorbed on the surface of the hollow microspheres, and then increase the temperature at a rate of 5-10°C / min Raise the temperature to 400°C and keep it warm for 4-5 hours;

[0062] 2. Weigh 75g of decafluorodecyltriethoxysilane and place it in a boiling drier with a reflux device at the top, adjust the temperature of the hot gas to 180°C, and pour the above-mentioned heated silica from the feeding port after the temperature is stable The hollow microspheres are discharged after 4 hours of reaction in the boiling dryer, and the thermal insulation filler with surface amphiphobic properties is obtained.

[0063] The amphiphobic filler obta...

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Abstract

The invention proposes a heat-insulating coating and a preparation method thereof, which include a heat-insulating resin system and an amphiphobic heat-insulating filler, and the amount of the amphiphobic heat-insulating filler is 10 to 30% of the mass of the resin in the resin system; The thermal filler is composed of hollow microspheres with amphiphobic characteristic groups grafted on the surface, and the amphiphobic characteristic groups are obtained by grafting reaction of hollow microspheres with vaporized fluorine-containing silane in a floating state. The invention adopts the thermal insulation filler grafted with amphiphobic groups capable of high temperature resistance, so that the thermal insulation coating has hydrophobic and oleophobic properties. Compared with the existing thermal insulation coating technology, the maintenance and use of the thermal insulation coating are improved. sex.

Description

technical field [0001] The invention relates to a heat-insulating coating and a preparation method thereof, belonging to the technical field of functional composite materials. Background technique [0002] Various high-temperature components such as kilns, boilers, and pipelines emit a large amount of heat during work. On the one hand, the energy consumption of the equipment itself is increased, and on the other hand, the ambient temperature is also increased to affect the normal operation of other equipment or cause harm to the operator. damage. Due to its high temperature resistance, good heat insulation effect and simple construction process, the heat insulation coating can be used as an external heat insulation material for various high temperature components, which can reduce equipment energy consumption and avoid damage to other equipment and operators caused by high temperature . [0003] Conventional thermal insulation coatings include high-temperature resistant in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04
Inventor 简文政孙景景权成高翠雪王彤王军辉周玉贵
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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