CN214246407U - Prefabricated member with micropore ceramsite and sound absorption plate thereof - Google Patents

Abstract

The utility model discloses a prefabricated member with micropore ceramsite and a sound absorption plate thereof, wherein the prefabricated member is formed by mixing, curing and molding the ceramsite and a gelatinizing agent, and micropores are arranged in the ceramsite; the gelatinizer is inorganic material such as cement, lime and the like, or organic material such as epoxy resin, polyurethane and the like, and is mixed with ceramsite, fixed and molded. The sound absorption plate is formed by cutting a prefabricated part, and the ceramic grains are damaged on a cutting surface to expose wall-broken micropores, so that the sound absorption plate has a sound absorption effect. The utility model discloses a make haydite glaze destroyed and expose inside microporous structure, reach the sound absorption purpose, be applicable to the building acoustics engineering.

Description

Prefabricated member with micropore ceramsite and sound absorption plate thereof

Technical Field

The utility model relates to a sound absorbing material, in particular to acoustic baffle with micropore haydite structure belongs to building acoustic material technical field for it makes an uproar to absorb sound.

Background

Acoustic environments are an important component of building environments. In a building, people need to have a quiet environment and a clear sound. The acoustic effect in the room is very big with the acoustic characteristic relation of the building material on top, wall, ground, when indoor use concrete, gypsum board, glass, metal sheet, stone material, ceramic tile etc. closely knit stereophonic sound reflective material in a large number, because the reverberation stack effect of sound reflection, can cause indoor sound noisy moreover, contain the confusion.

It is an effective measure to install a sound-absorbing decorative panel indoors, and generally, the sound-absorbing decorative panel is made of a sound-absorbing material having a certain sound-absorbing coefficient. The sound absorption material is made of sound absorption coefficients, wherein the material with the sound absorption coefficient NRC smaller than 0.2 is a reflecting material, the material with the NRC larger than 0.2 is considered as the sound absorption material, and the sound absorption coefficients represent the sound absorption capacity of the sound absorption material. The traditional sound absorption materials generally comprise mineral wool boards, wood wool boards, glass fiber cotton, rock wool, microporous sponge, polyester fiber boards, perforated metal boards, perforated wood boards and the like. However, the disadvantages of these mineral fiber sound absorbers are: the material has poor strength, poor aesthetic property, fiber dust and the like, and is easy to deform, crack or peel after long-term use.

The ceramic particle fired by argil (or municipal sludge and other wastes) is a granular material with a large number of micropores naturally formed inside in the manufacturing process. The abundant micropores in the ceramsite have good sound absorption effect. However, when the firing of the ceramsite is completed, the outer surface of the ceramsite is skinned to form glaze, so that the microporous structure is enclosed by the dense thin skin and cannot be contacted with sound waves, and the ceramsite cannot absorb sound. For a long time, ceramsite is mostly adopted as filling aggregate or laminated filter material, and no construction sound absorption is carried out by utilizing a microporous structure in the ceramsite. Even though the ceramsite is used as the sound absorption plate, the sound absorption is only carried out by utilizing gaps among the ceramsite as the aggregate, but the sound absorption efficiency is low, and a large number of gaps formed by stacking the ceramsite are required for sound absorption.

Disclosure of Invention

Therefore, the utility model provides a prefab and acoustic baffle with micropore haydite, the prefab is with micropore haydite as the aggregate, through solidifying the shaping with gelatinizing agent mixture, the acoustic baffle is the prefab through cutting into the board, makes it expose the inside micropore of haydite and have the sound absorption on the cutting surface.

The utility model adopts the following technical scheme:

a prefabricated member with microporous ceramsite is formed by mixing, curing and molding the ceramsite and a gelling agent, wherein the ceramsite is dispersed in the gelling agent; the outside of the ceramsite is provided with a closed shell, and the inside of the ceramsite is provided with micropores; the gelling agent is portland cement, aluminate cement, sulphoaluminate cement, lime, gypsum, epoxy resin, polyurethane, polypropylene, polyester or polyether.

Furthermore, the ceramsite is a granular ceramic material formed by firing pottery clay.

Further, the micropores are in a shape of single pores and/or reticular pores.

The microporous ceramsite sound absorption plate is formed by cutting the prefabricated member with the microporous ceramsite, and wall-broken micropores are formed on a cutting surface.

Furthermore, the wall-broken micropores are formed by destroying the ceramsite.

Further, the sound absorption board is provided with the wall-breaking micropores at least on one board surface.

The utility model discloses an innovation point lies in, utilizes the inside a large amount of microporous structure characteristics of haydite, regards it as micropore sound absorbing material. The gelling agent is used as a carrier, so that the ceramsite is uniformly dispersed in the carrier and is solidified and molded, the shell of the ceramsite at the cutting surface is damaged by a cutting method to expose the internal microporous structure, and the surface exposed with the internal microporous structure is used as a sound absorption surface to achieve the sound absorption effect. The ceramsite is mixed with gelling agents such as cement, has certain strength, can be made into decorative boards applied to indoor and outdoor walls, roofs or floors, and meanwhile, the ceramsite material has the characteristics of environmental protection, no toxicity (no TVOC and formaldehyde release in detection results), good weather resistance, good water resistance, corrosion resistance, non-combustibility (the combustion performance of the detection results reaches A1 level), durability, stable performance and the like, and is suitable for building acoustic engineering. In addition, the ceramsite is light in weight and is a good weight-reducing material.

Drawings

FIG. 1 is a schematic structural diagram of a prefabricated member with microporous ceramsite provided by an embodiment;

FIG. 2 is a schematic view of the inside mesh pores of the ceramsite provided by the embodiment;

FIG. 3 is a schematic view of the shape of the ceramsite outer body provided by the embodiment;

FIG. 4 is a schematic structural view of a microporous ceramsite sound-absorbing board provided by the embodiment.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples. It should be understood by those skilled in the art that the following examples are not intended to limit the present invention, and all equivalent substitutions and modifications made within the spirit of the present invention should be considered as falling within the protection scope of the present invention.

As shown in figure 1, the utility model provides a prefabricated member with micropore haydite is by haydite 1 and gelatinizer 2 mixed solidification shaping, and wherein haydite 1 is as the aggregate, and gelatinizer 2 is as the shaping carrier, and haydite 1 disperses in gelatinizer 2. After solidification and forming, only part of the ceramsite 1 is seen on the surface of the prefabricated part, and most of the ceramsite 1 is buried in the gelling agent. The prefabricated member can be formed by adopting a mould, and the specific shape can be designed at will according to the requirement.

The ceramsite 1 is a granular ceramic material formed by firing pottery clay, and is provided with a closed shell 11 and micropores 12 in the shell, wherein the structure of the micropores can be in various forms, some are single holes, some are reticular holes, and figure 2 shows the reticular holes. Because of the sealing function of the outer shell 11, the micropores 12 are sealed inside, so that the micropores 12 inside the ceramsite can not be exposed outside.

The shape of the external body of the ceramsite 1 is not limited, and the ceramsite can be in a regular shape such as a spherical shape, an ellipsoidal shape and the like or any irregular shape which is naturally formed in the sintering process, as shown in fig. 3.

The gelling agent 2 is a solidification type material which can be mixed with the ceramsite 1 and can enable the ceramsite to be uniformly dispersed in the solidification type material, and the solidification type material and the ceramsite 1 are molded and solidified together and have certain strength. Optional gellant 2 materials are mainly: inorganic materials such as portland cement, aluminate cement, sulphoaluminate cement, lime, gypsum, etc., or organic materials such as epoxy resin, polyurethane, polypropylene, polyester, polyether, etc.

In the prefabricated member, the weight mixing ratio of the ceramsite 1 to the gelatinizing agent 2 is about (40-90%): (10% -60%), can make the shaping effect better, the intensity is better.

Furthermore, the microporous ceramsite 1 and the gelling agent 2 are both flame-retardant materials and non-toxic materials.

The utility model simultaneously provides a micropore haydite acoustic baffle is formed through the cutting by above-mentioned prefab. As shown in fig. 4, the sheet is cut from the preform of fig. 1 along the a-cut plane. When the prefabricated member is cut, the cutter destroys the encountered ceramsite 1 on a cutting path, so that micropores inside the ceramsite become wall-broken micropores 13. The wall-broken micropores 13 are internal micropore structures exposed after the shell on the surface of the ceramsite 1 is broken, and the existence of the wall-broken micropores 13 enables the plate to have a sound absorption effect on the cut surface.

Practice proves that the larger the area ratio of the wall-breaking micropores 3 on the surface of the plate is, the better the area ratio is, but a certain forming strength also needs to be ensured, so that the area ratio of the wall-breaking micropores is about 70-90% optionally. The area ratio of the wall-broken micropores refers to: the ratio of the area of the wall-breaking micropores 13 to the total area of the cutting board surface is also called surface porosity.

Furthermore, the sound absorption plate has a sound absorption function only by at least arranging the wall-breaking micropores 13 on one panel surface.

The following are several examples of the component proportion of the sound-absorbing board and the obtained technical effects (the following percentages are weight ratios):

example 1

The material components are as follows: 60 percent of ceramsite (with the grain diameter of 1-10mm), 39.9 percent of silicate concrete (525#), and 0.1 percent of cement additive (one or a combination of a plurality of polymeric polyol, polyether alcohol amine, triethanolamine, diethylene glycol, triisopropanolamine and ethylene glycol).

Cutting the formed plate: the width is 1000mm multiplied by 500mm and the thickness is 15 mm.

Area ratio of wall-broken micropores: 70 percent.

Sound absorption coefficient: NRC is 0.79; compressive strength: 4 MPa; breaking strength: 3 MPa; fire resistance in combustion: grade A is non-combustible.

Example 2

The material components are as follows: 70 percent of ceramsite (with the grain diameter of 15-20mm), 49.9 percent of aluminate concrete (425#), and 0.1 percent of cement additive (one or a combination of a plurality of polymeric polyol, polyether alcohol amine, triethanolamine, diethylene glycol, triisopropanolamine and ethylene glycol).

Cutting the formed plate: the breadth is 600mm multiplied by 600mm and the thickness is 16 mm.

Area ratio of wall-broken micropores: 80 percent.

Sound absorption coefficient: NRC ═ 0.84; compressive strength: 5 MPa; breaking strength: 4 MPa; fire resistance in combustion: grade A is non-combustible.

Example 3

The material components are as follows: 80% of ceramsite (with the particle size of 1-10mm), 19% of epoxy resin and 1% of auxiliary additive (any coagulant aid which does not react with the ceramsite and the epoxy resin and helps solidification can be used).

Cutting into plates: the breadth is 1000mm multiplied by 1000mm and the thickness is 20 mm.

Area ratio of wall-broken micropores: 90 percent.

Sound absorption coefficient: NRC ═ 0.78; compressive strength: 6 MPa; breaking strength: 4 MPa; fire resistance in combustion: grade A is non-combustible.

The following table shows the sound absorption coefficient of the plate under different sound frequencies, and a large number of tests prove that the sound absorption coefficient NRC is still larger than 0.3 under very high frequencies, and the sound absorption effect is very strong.

Claims (2)

1. A micropore ceramsite acoustic baffle is characterized in that: is formed by cutting a ceramsite prefabricated part, and wall-broken micropores of the ceramsite are arranged on a cutting surface;

the ceramic prefabricated part is a solidified forming part taking ceramic as aggregate and cement as gelling agent;

the outside of the ceramsite is provided with a closed shell, and the inside of the ceramsite is provided with micropores;

the cement is one of portland cement, aluminate cement and sulphoaluminate cement.

2. The microporous ceramsite acoustic panel according to claim 1, wherein: the sound absorption board is provided with the wall-breaking micropores at least on one board surface.

Images