阅读说明：本技术 一种复合板材 (Composite board ) 是由 张国涛 杨景琪 邓仕豪 江峰 彭双阳 陈林 于 2020-05-25 设计创作，主要内容包括：本发明涉及建材领域,具体为一种复合板材。此种复合板材包括发泡陶瓷板和与之粘接复合的混凝土板,上述混凝土板中含有轻质多孔材料颗粒。和现有技术相比,本发明提供的复合板材在厚度≤100mm的条件下的空气隔声量就可以达到45dB,这远远优于现有无机墙体板材。(The invention relates to the field of building materials, in particular to a composite board. The composite board comprises a foamed ceramic board and a concrete board bonded with the foamed ceramic board, wherein the concrete board contains lightweight porous material particles. Compared with the prior art, the air sound insulation quantity of the composite board provided by the invention can reach 45dB under the condition that the thickness is less than or equal to 100mm, which is far superior to the existing inorganic wall board.)

1. A composite board comprises a foamed ceramic board and a concrete board bonded and compounded with the foamed ceramic board, and is characterized in that the concrete board contains lightweight porous material particles.

2. A composite sheet material according to claim 1, wherein the particles of the lightweight, porous material have a particle size of 50mm or less.

3. A composite panel as set forth in claim 1, wherein said foamed ceramic panels include a first foamed ceramic panel and a second foamed ceramic panel, said concrete panel being located between said first foamed ceramic panel and said second foamed ceramic panel.

4. A composite panel according to claim 1, wherein the concrete panel is a lightweight aerated concrete panel.

5. A composite sheet material as set forth in claim 3, wherein said first cellular ceramic plate and said second cellular ceramic plate have different cell sizes and densities.

6. A composite board as set forth in claim 3, wherein the compressive strength difference between the first foamed ceramic plate, the second foamed ceramic plate and the concrete slab is less than or equal to 0.5 Mpa.

7. A composite board as claimed in claim 4, wherein the lightweight cellular material particles are at least one of expanded ceramic, perlite and polyphenyl particles.

8. A composite board as claimed in claim 7, wherein the lightweight porous material particles are open or semi-open cell foamed ceramic particles.

9. A composite panel according to claim 8, wherein the density of the foamed ceramic particles is less than or equal to the density of the aerated concrete panel.

10. A composite sheet material according to claim 9, wherein the foamed ceramic particles have a particle size of 10mm to 30 mm.

Technical Field

The invention relates to the field of building materials, in particular to a composite board.

Background

The foamed ceramic is a ceramic material with closed pores, has the characteristic of light weight and heat preservation, and is commonly used as a heat preservation material of a wall body. At present, the process for industrially producing the foamed ceramics is mature day by day, and specifically, a high-temperature foaming agent is added into a ceramic production raw material, a blank body is obtained after high-temperature firing, and then cutting and polishing are carried out to obtain a foamed ceramic product. The commonly used high-temperature foaming agent comprises silicon carbide, carbon powder, ferric oxide and the like, and most of the foaming agents applied in the current industrial production are silicon carbide powder or polishing slag containing silicon carbide.

The foamed ceramic can expand rapidly in the sintering process, and the cracking problem caused by stress concentration is easy to occur in the cooling process; when the process is changed (such as formulation, sintering process, powder particle ratio, etc.), a large amount of waste products may be generated, and in addition, a large amount of waste residues are generated in the blank processing of the foamed ceramics. At present, waste products and waste residues of the foamed ceramics are mostly treated and buried or recycled as raw materials for producing the foamed ceramics. A large amount of land resources are occupied for landfill, and the sintered foamed ceramics are difficult to weather; when the waste foamed ceramic material is recycled as a raw foamed ceramic material, the waste foamed ceramic material is ground into fine powder and then recycled as a raw material, which increases the corresponding processing difficulty. Therefore, how to simply and efficiently utilize the foamed ceramic waste becomes the key point of research and development in the industry.

The plate-shaped section bar is a common building material, and can be a single material or a composite multi-layer material. The plates made of cement as the main material are the most common and the main wall material at present. The sound insulation performance is an important index of the board, most of the materials with better sound insulation performance are organic materials at present, and the fireproof performance is poorer, and the board made of inorganic materials has better fireproof performance but general sound insulation performance. Therefore, how to obtain a composite board with good sound insulation performance becomes an important development direction in the field. The sound insulation performance of the material can be improved by bonding and compounding the foamed ceramic plate and the concrete plate mainly made of cement, but the improvement effect is general. This is because the pores in the foamed ceramic plate are mainly closed pores (if there are many through pores, the strength of the material cannot be secured), and the concrete plate is mainly free of pores or mainly has through open pores. The two materials are compounded, although the sound waves are transmitted in the two materials with different characteristics to some extent, the loss rate is general, if a better sound insulation effect is to be achieved, the thickness of the plate needs to be more than 150mm, otherwise, the air sound insulation quantity is difficult to achieve 45 dB.

Disclosure of Invention

In view of the technical problems set forth in the background art, the present invention provides a composite board that can have good sound insulation performance under a thin condition.

A composite board comprises a foamed ceramic plate and a concrete plate bonded and compounded with the foamed ceramic plate, wherein the concrete plate contains lightweight porous material particles. The lightweight porous material particles are arranged in the concrete board, and when sound waves pass through the concrete board, the lightweight porous material can well absorb the sound waves, so that a good sound insulation effect is achieved. Meanwhile, the foamed ceramic plate with the closed air holes has different characteristics from the concrete plate, so that the energy loss of the sound wave is increased when the sound wave passes through.

Preferably, in the above composite board, the particle size of the lightweight porous material particles is less than or equal to 50 mm. The particle size of the lightweight porous material cannot exceed the thickness of the concrete plate, and the thickness of the concrete plate is usually set at 50mm, so the particle size of the lightweight porous material particles is preferably set at 50mm at the maximum. In addition, the light porous material has the main function that after sound waves enter the concrete plate, the air holes in the porous material can absorb a large amount of sound wave energy due to the change of material properties, so that the sound insulation effect is achieved.

Preferably, in the above composite board, the foamed ceramic plates include a first foamed ceramic plate and a second foamed ceramic plate, and the concrete slab is located between the first foamed ceramic plate and the second foamed ceramic plate.

Preferably, in the above composite panel, the concrete panel is a lightweight aerated concrete panel.

Preferably, in the above composite board, the first foamed ceramic plate and the second foamed ceramic plate have different pore diameters and densities.

Preferably, in the composite board, the compressive strength difference between the first foamed ceramic plate and the second foamed ceramic plate and the concrete slab is less than or equal to 0.5 Mpa.

Preferably, in the above composite board, the lightweight porous material particles are at least one of foamed ceramics, perlite and polyphenyl particles.

Preferably, in the above composite sheet, the lightweight porous material particles are open-pore or semi-open-pore foamed ceramic particles.

Preferably, in the composite board, the density of the foamed ceramic particles is less than or equal to that of the aerated concrete.

Preferably, in the above composite sheet, the particle diameter of the foamed ceramic particles is 10mm to 30 mm.

Compared with the prior art, the air sound insulation quantity of the composite board provided by the invention can reach 45dB under the condition that the thickness is less than or equal to 100mm, which is far superior to the existing inorganic wall board.

Drawings

Fig. 1 is a cross-sectional view of a composite board provided in example 1 of the present invention.

Fig. 2 is a cross-sectional view of a composite board provided in embodiment 2 of the present invention.

The reference numbers illustrate: 1-foamed ceramic plate; 2-concrete slab; 11-first foamed ceramic plate; 12-a second foamed ceramic plate; 3-lightweight porous material particles.

Detailed Description

The invention is described in detail below with reference to the figures and the detailed description.