Grade-A fireproof light high-sound-insulation building board

Abstract

The invention belongs to the technical field of building boards, and provides an A-grade fireproof light-weight high-sound-insulation building board which comprises a first laminate, a damping layer and a second laminate, the first laminate, the damping layer and the second laminate are sequentially connected in a bonding mode, the damping layer is made of polyurethane and a flame retardant, and the flame retardant is added into the polyurethane in a high-density low-foaming manufacturing process; the first laminate and the second laminate are inorganic homogeneous building boards with different materials and densities, a flame retardant is added into polyurethane in a high-density low-foaming manufacturing process to form a raw material for manufacturing the damping layer, so that the damping layer of the building board has elasticity, flame retardance and viscosity; and the plates made of different materials are selected as the first layer plate and the second layer plate, the performance advantages of various plates can be fully utilized, performance complementation is achieved, and therefore the comprehensive performance of the whole building plate is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of building boards, in particular to an A-grade fireproof, lightweight and highly sound-insulating building board. Background Art

[0002] With the increasing requirements for sound insulation and noise reduction performance in civil buildings, especially in the context of the slowdown in the growth of new buildings in my country, it has become an urgent need to improve the sound insulation performance of existing buildings. In order to meet this demand, it is necessary to improve the sound insulation effect of existing building walls or floors without significantly increasing the building load. Therefore, the development of efficient and lightweight sound insulation material products and their application in actual projects is not only an inevitable trend, but also contains huge market potential.

[0003] There are many types of sound insulation materials on the market, mainly including single-layer homogeneous panels and multi-layer composite panels. Common single-layer homogeneous panels include gypsum boards, cement pressure boards, glass magnesium boards and rock boards. Multi-layer composite panels mostly use keels as support structures, and are filled with rock wool or fiber materials to form composite panels. Some also have a damping layer made of rubber or other elastic materials attached to the interlayer of the keel support.

[0004] The main drawback of a single-layer homogeneous board is the lack of a damping layer, which results in its airborne sound insulation performance being limited by the mass law. The resonant frequency in the low-frequency band and the matching effect in the high-frequency band will greatly affect its sound insulation performance, resulting in poor overall sound insulation performance. On the other hand, for multi-layer composite boards supported by keels and filled with rock wool or fiber materials in their interlayers, since the keel itself does not have a damping effect, if the materials of the boards on both sides are similar, their resonant frequencies and matching effect occurrence frequencies will tend to be consistent, which will also lead to a significant attenuation of the sound insulation performance in the low-frequency and high-frequency bands. In addition, at the same weight, the thickness and impact resistance of such multi-layer composite boards are significantly inferior to those of single-layer homogeneous boards. Although there is a multi-layer composite board with a damping layer made of rubber or other elastic materials pasted in the interlayer of the keel support, which improves its airborne sound insulation performance to a certain extent and enables it to surpass a single-layer homogeneous board with the same surface density, these damping layer materials are mostly non-A-class fireproof materials such as rubber, adhesives or non-A-class fireproof polyurethane elastomers, so their fire resistance performance cannot meet the requirements of A-class fireproof indicators.

[0005] To this end, those skilled in the art have proposed a Class A fireproof, lightweight, high sound insulation building board to solve the problems raised by the background art. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a Class A fireproof, lightweight and high sound insulation building board to solve the problems in the background technology.

[0007] A Class A fireproof, lightweight, high sound insulation building board comprises a first layer, a damping layer and a second layer, wherein the first layer, the damping layer and the second layer are bonded and connected in sequence, wherein the damping layer material is polyurethane and a flame retardant, and the flame retardant is added to the polyurethane in a high-density low-foaming manufacturing process.

[0008] Preferably, the first layer board is an inorganic homogeneous building board, and the thickness of the first layer board is 5 mm to 8 mm.

[0009] Preferably, the thickness of the damping layer is 3 mm to 5 mm;

[0010] Preferably, the second layer board is an inorganic homogeneous building board, and the thickness of the second layer board is 5 mm to 8 mm.

[0011] Preferably, the first layer and the second layer are inorganic homogeneous building boards of different materials and densities.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention forms the raw material for manufacturing the damping layer by adding a flame retardant to polyurethane in the high-density low-foaming manufacturing process, so that the damping layer of the building board has elasticity, flame retardancy and viscosity, thereby improving the sound insulation performance, fire resistance and environmental protection performance of the building board.

[0014] 2. The present invention can make full use of the performance advantages of various boards by selecting boards of different materials as the first and second layers, realize performance complementarity, and thus improve the overall performance of the building board. Secondly, by selecting boards of different materials as the first and second layers, it can better adapt to different building environments and uses, and improve the durability and service life of the building board. Finally, boards of different densities have different sound conduction and reflection capabilities. By reasonably matching boards of different densities as the first and second layers, the sound insulation effect can be optimized and the propagation and interference of noise can be reduced.

[0015] 3. Compared with the traditional keel composite board, the thickness of the damping layer of the building material of the present invention is much smaller than the thickness of the keel in the traditional keel composite board, and by optimizing the sound insulation performance of the first and second layer boards, the structural thickness of the building board is reduced under the condition of the same sound insulation performance, thereby enhancing the application potential in the fields of board construction and so on, showing a broader market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] In the figure:

[0018] 1. Layer 1; 2. Damping layer; 3. Layer 2. DETAILED DESCRIPTION

[0019] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] Example

[0021] refer to Figure 1 The present invention provides a Class A fireproof, lightweight, high sound insulation building board, comprising a layer 1, a damping layer 2, and a layer 3. The layer 1, the damping layer 2, and the layer 3 are bonded together in sequence. The damping layer 2 is made of polyurethane and a flame retardant. The flame retardant is added to the polyurethane in a high-density, low-foaming manufacturing process. The flame retardant grade of the damping layer 2 can be improved by adding the flame retardant.

[0022] Layer 1 is an inorganic homogeneous building board.

[0023] The thickness of layer 1 is 5 mm to 8 mm.

[0024] The thickness of the damping layer 2 is 3 mm to 5 mm;

[0025] Layer 2 3 is an inorganic homogeneous building board.

[0026] The thickness of the layer 2 3 is 5 mm to 8 mm.

[0027] Layer 1 and layer 2 3 are inorganic homogeneous building boards of different materials and densities. Layer 1 and layer 2 3 include but are not limited to homogeneous boards, gypsum boards, calcium silicate boards and cement fiber boards. Inorganic homogeneous building boards have good fireproof, moisture-proof, sound-proof and heat-insulating properties, which improve the sound insulation and fireproof properties of the building boards. When actually manufacturing building boards, layer 1 and layer 2 3 use inorganic homogeneous building boards of different materials and densities. Different inorganic homogeneous building boards have different physical and chemical properties. For example, gypsum board has good fireproof performance and sound insulation effect, while calcium silicate board has excellent moisture-proof and heat-insulating performance. By selecting boards of different materials as layer 1 and layer 2 3, the performance advantages of various boards can be fully utilized to achieve performance complementarity, thereby improving the overall comprehensive performance of the building board. Secondly, by selecting boards of different materials as layer 1 and layer 2 3, it can better adapt to different building environments and uses, and improve the durability and service life of the building board. Finally, boards of different densities have different sound conduction and reflection capabilities. By reasonably matching boards of different densities as layer 1 and layer 2 3, the sound insulation effect can be optimized and the propagation and interference of noise can be reduced.

[0028] From the above, it can be seen that the raw material for manufacturing the damping layer 2 is formed by adding flame retardants to polyurethane in the high-density low-foaming manufacturing process, so that the damping layer 2 of the building board has elasticity, flame retardancy and viscosity. The damping layer 2 has good elasticity and can play a role in buffering and shock absorption under the action of external forces such as earthquakes, thereby protecting the stability and safety of the building structure and further improving the stability of the building board. The elastic performance of the damping layer 2 can effectively absorb and isolate sound, thereby improving the sound insulation performance of the building board. Compared with the traditional keel composite board, the thickness of the damping layer of the building material is much smaller than the thickness of the keel in the traditional keel composite board. Under the optimization of the sound insulation performance of the layer one and the layer two, the structural thickness of the building board is reduced under the condition of the same sound insulation performance, thereby enhancing the application potential in the fields of board construction and so on, showing a broader market prospect.

[0029] The damping layer 2 has flame retardant properties, which complement the fireproof properties of the layer 1 and the layer 2 3, and together improve the fireproof grade of the building board, making it reach the Class A fireproof standard. This feature greatly enhances the safety and stability of the building board in a fire.

[0030] The damping layer 2 is sticky, and the stickiness of the damping layer 2 can be used to directly bond and install the layer 1 and the layer 2 3 to the two sides of the damping layer 2 without using a large amount of additional glue. This not only simplifies the production process of building boards and improves production efficiency, but also significantly reduces the amount of glue used, thereby reducing the negative impact of building boards on the environment during production and use, and improving their environmental performance.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A Class A fireproof, lightweight and highly sound-insulating building board, characterized by: The invention comprises a first layer (1), a damping layer (2) and a second layer (3), wherein the first layer (1), the damping layer (2) and the second layer (3) are bonded and connected in sequence, wherein the damping layer (2) is made of polyurethane and a flame retardant, and the flame retardant is added to the polyurethane in a high-density low-foaming manufacturing process.

2. A Class A fireproof, lightweight, high sound insulation building board as claimed in claim 1, characterized in that: The layer board one (1) is an inorganic homogeneous building board, and the thickness of the layer board one (1) is 5mm to 8mm.

3. A Class A fireproof, lightweight, high sound insulation building board as claimed in claim 1, characterized in that: The thickness of the damping layer (2) is 3 mm to 5 mm.

4. A Class A fireproof, lightweight, high sound insulation building board as claimed in claim 1, characterized in that: The second layer board (3) is an inorganic homogeneous building board, and the thickness of the second layer board (3) is 5mm to 8mm.

5. A Class A fireproof, lightweight, high sound insulation building board as claimed in claim 1, characterized in that: The first layer (1) and the second layer (3) are inorganic homogeneous building boards with different materials and densities.

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