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A kind of amphiphobic filler, application and preparation method

An amphiphobic and heat-insulating coating technology, which can be applied to coatings and other directions, can solve the problems of easy shedding of hydrophobic and oleophobic groups, limited reactivity, and inappropriate modification of heat-insulating coatings, so as to improve reactivity and shorten the preparation period. , The effect of improving maintainability and usability

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 amphiphobic filler, application and preparation method
  • A kind of amphiphobic filler, application and preparation method
  • A kind of amphiphobic filler, application and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Proportion:

[0035] Glass cenospheres 200g

[0036] Tridecafluorooctyltriethoxysilane 20g

[0037] The preparation process of amphiphobic packing is as follows:

[0038] 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 at a rate of 5-10°C / min to 300℃, keep warm for 4~5h;

[0039] 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.

[0040] The amphiphobic filler obtained in this example is added to the KH-HP-RTV room temperature vulcanizing silicone rub...

Embodiment 2

[0049] Proportion:

[0050] Silica hollow microspheres 500g

[0051] Heptadecafluorodecyltriethoxysilane 75g

[0052] The preparation process of amphiphobic packing is as follows:

[0053] 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;

[0054] 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.

[0055] The amphiphobic filler obta...

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Abstract

The invention provides amphiphobic filler, application and a preparation method. The amphiphobic filler is composed of hollow microspheres with amphiphobic groups grafted on the surfaces, wherein theamphiphobic groups are obtained by allowing hollow microspheres to be in grafting reaction with gasified fluorine-containing silane in a floating state. The surface amphiphobic filler is prepared by means of high-temperature activation treatment, airflow-assisted dispersion and gaseous-phase contact reaction, reaction activity is improved in a heating condition, gaseous-phase state increases reactant contact area, and obtaining of filler with better surface amphiphobic performance is facilitated.

Description

technical field [0001] The invention relates to an amphoteric filler, its application and a preparation method, and belongs 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 resist...

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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