Ceramic foam sound absorption and noise reduction plate and preparation process thereof

Abstract

A ceramic foam sound absorption and noise reduction plate and a preparation process thereof. The ceramic foam sound absorption and noise reduction plate comprises by weight 90-96.8% of diatomite, 2-5% of bentonite, 1-4.8% of waste glass powder and 0.2-0.5% of carboxymethyl cellulose. The preparation process includes the steps of: preparing a slurry, conducting ball milling, adding water for ball milling into a slurry with water content of about 35%, and sieving through a screening for standby; preparing a ceramic blank: soaking fine pore sponge in a sodium hydroxide solution by using an organic foam impregnation method, cleaning and drying for standby; pressing the fine pore sponge to expel the air, immersing the sponge in a pre prepared ceramic slurry, excluding excessive slurry by kneading and rolling methods, drying, and sintering in a kiln when moisture drops to 3-4%; and sintering by rising the temperature to 1150 DEG C according to a sintering temperature control curve degrees, then naturally cooling and discharging from the kiln. The ceramic foam sound absorption and noise reduction plate has good sound absorption and noise reduction performance, and can adapt to harsh environment and adsorb and store the moisture in the air in high humidity, and has disinfection function, not only can remove the odor but also can effectively kill harmful bacteria such as Escherichia coli.

Description

technical field [0001] The invention relates to a foam ceramic sound-absorbing and noise-reducing board and a preparation process thereof, in particular to a manufacturing technology of a foam porous ceramic sound-absorbing and noise-reducing board prepared by compounding diatomite and bentonite materials. Background technique [0002] As we all know, sound originates from the vibration of objects, which causes the vibration of adjacent air to form sound waves, and propagates around in the air medium. When the sound is transmitted to the surface of the component material, part of the sound energy is reflected, part of it penetrates the material, and part of the sound energy is converted into heat energy due to the vibration of the component material or the friction with the surrounding medium when the sound propagates in it, and the sound energy is lost. , that is, it is usually said that sound is absorbed by the material. [0003] Materials and structures are usually di...

AI Technical Summary

Problems solved by technology

Due to the different levels of emphasis on environmental quality by various enterprises, the noise pollution in many production workshops has not been well controlled. There are many reasons for this situation, among which the sound-absorbing and noise-reducing materials or facilities are not cost-effective, and the construction is not convenient enough. important factors and reasons

[0008] At present, in the interior decoration process, many units and individuals choose environmentally friendly diatom mud materials. Although it has many advantages, it cannot be used in high-humidity and moisture environments.

Therefore, textile workshops with high humidity are not suitable for selection