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Silica airgel filled open-cell foam glass particles and manufacturing method thereof

A technology of open-cell foam and glass particles, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problems of restricting the use effect of excellent thermal insulation materials and filling materials, poor thermal insulation effect, etc., to solve the problem of thermal insulation The effect of poor effect, good thermal insulation performance and low production cost

Active Publication Date: 2021-02-23
芽米科技(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, with the further research and development of the application of granular foam glass, it is found that when granular foam glass is used as heat insulation material, the thermal insulation effect is not good, which greatly limits its use as an excellent heat insulation material and filling material. How to prepare foam glass particles with excellent performance has become an urgent problem to be solved in the production of foam glass particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Mix 90kg of waste glass powder, 3kg of heavy calcium carbonate powder, 0.5kg of coarse borax, and 0.5kg of zinc white, then use a ball mill to grind it into 100-200 meshes, add 3kg of 1-2mm polystyrene foam particles, and then fully stir , spray 20-30kg of atomized water and stir evenly, put the mixture into a vibrator, and vibrate to make raw meal balls with spherical particles with a particle size of 15-30mm; put the raw meal balls into the muffle furnace, and automatically The room temperature is raised to 110°C at a heating rate of 3-5°C / min and kept for 1 hour, and the moisture is dried; the heating rate is raised to 400°C at a rate of 5-10°C / min, and the temperature is kept at 30-40min; Raise to 800-950°C, keep warm for 20-30min; then cool down to 600°C at a cooling rate of 10-20°C / min, keep warm for 20-30min; then cool down to room temperature at a cooling rate of 1-2°C / min. Open-cell cellular glass particles;

[0017] 3) Mix 50kg of ethyl orthosilicate with ...

Embodiment 2

[0019] 1) Mix 90kg of waste glass powder, 3kg of heavy calcium carbonate powder, 0.5kg of coarse borax, and 0.5kg of zinc white, then use a ball mill to grind it into 100-200 meshes, add 3kg of 1-2mm polystyrene foam particles, and then fully stir , spray 20 to 30 kg of atomized water and stir evenly, put the mixture into a vibrator, and vibrate to make raw balls of spherical particles with a particle diameter of 15 to 30 mm; the preparation process of the open-cell foam glass particles is the same as in Example 1;

[0020] 3) Mix 80kg of tetraethyl orthosilicate with 106kg of ethanol and 35kg of water, then add hydrochloric acid to adjust the pH to 3-4, and hydrolyze at 50°C for 20-30 minutes to obtain a sol; add diluted ammonia to adjust the pH of the sol to 6.0-8.0, Immediately the sol was mixed with open-cell foam glass particles, and the process was the same as in Example 1.

Embodiment 3

[0022] 1) Mix 90kg of waste glass powder, 5kg of heavy calcium carbonate powder, 0.5kg of coarse borax, and 0.5kg of zinc white, then use a ball mill to grind it into 100-200 meshes, add 5kg of 1-2mm polystyrene foam particles, and stir thoroughly , spray 20 to 30 kg of atomized water and stir evenly, put the mixture into a vibrator, and vibrate to make raw balls of spherical particles with a particle diameter of 15 to 30 mm; the preparation process of the open-cell foam glass particles is the same as in Example 1;

[0023] 3) Mix 50kg of ethyl orthosilicate with 65kg of ethanol and 21kg of water, then add hydrochloric acid to adjust the pH to 3-4, hydrolyze at 50°C for 20-30min to obtain a sol; add diluted ammonia to adjust the pH of the sol to 6.0-8.0, Immediately the sol was mixed with open-cell foam glass particles, and the process was the same as in Example 1.

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Abstract

The invention relates to a silica aerogel-filled open-cell foam glass particle and a manufacturing method thereof. The manufacturing method comprises grinding waste glass, heavy calcium carbonate, crude borax and a small amount of zinc white as raw materials, adding plastic foam particles into the raw materials and carrying out granulation under control of a heating rate and a sintering temperature, adding tetraethoxysilane into an ethanol aqueous solution, adjusting pH to 3-4 so that a sol solution is obtained, adding ammonium hydroxide into the sol solution to adjust pH to 6-8, mixing the sol and the open-cell foam glass particles so that the sol forms gel in the porous foam glass, and carrying out aging, modification and drying to obtain the silica aerogel-filled open-cell foam glass particles. The method utilizes a large amount of solid waste glass and natural stone raw materials, realizes a low production cost and realizes foam glass gap filling with silica aerogel. The silica aerogel-filled open-cell foam glass particle has the advantages of low density, high strength and low thermal conductivity.

Description

technical field [0001] The invention relates to open-cell foam glass and a preparation method thereof, and in particular provides a silicon airgel-filled open-cell foam glass particle and a production method thereof, belonging to the technical field of building heat insulation material production. Background technique [0002] Granular foam glass is a new type of environmentally friendly thermal insulation material developed from foam glass. It is mainly used as thermal insulation materials and sound-absorbing materials. Japan Chemical Products Industry Co., Ltd. No. 63-65617 has introduced a method for manufacturing glass foam particles. In the process, glass powder and inorganic foaming agent are consolidated and granulated by a binder. After granulation, the granules are sized and coated. Anti-sticking agent, fired and foamed in a rotary kiln. [0003] Guo Hongwei discloses CN201010550152.0, a preparation method of foam glass particles. First, the glass ball is ground t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C11/00C03B19/10C03B19/08C04B14/24C04B20/10
CPCC03B19/108C03C11/007C04B14/24C04B20/1066
Inventor 赵洪凯肖力光胡洪亮丁锐
Owner 芽米科技(广州)有限公司
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