Formaldehyde-removing flame-retardant sound-absorbing multifunctional composite board
By using a composite structure consisting of a base layer, a fine material layer, a single-layer veneer, a sound-absorbing layer, and a flame-retardant layer, combined with inorganic adhesives and photocatalysts, the problems of flammability and poor sound absorption performance of traditional boards are solved, achieving flame-retardant and sound-absorbing effects, degrading formaldehyde, and improving indoor environmental quality.
Patent Information
- Application Number
- CN202520131874.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Traditional wood-based panels are flammable and release toxic gases when in a fire, and have poor sound absorption properties. Long-term exposure to formaldehyde pollution is harmful to human health, and indoor noise pollution seriously affects the quality of life.
It adopts a composite structure consisting of a base layer, a fine material layer, a single-layer veneer, a sound-absorbing layer, a flame-retardant layer, and a decorative layer. Combined with inorganic adhesives and photocatalysts, it achieves flame-retardant and sound-absorbing functions through the connection between layers and the catalytic degradation of formaldehyde.
A composite board with good flame retardant and sound absorption properties is provided. It has a stable structure, can effectively degrade formaldehyde, and improve the quality of life.
Smart Images
Figure CN223824389U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of functional building materials, and more specifically, it relates to a formaldehyde-removing, flame-retardant, and sound-absorbing multifunctional composite board. Background Technology
[0002] With the rapid development of my country's economy and the improvement of people's living standards, indoor environmental pollution has received increasing attention. Formaldehyde, as one of the main components of indoor air pollution, is mainly released from furniture, wood-based panels, and paints. Long-term exposure to formaldehyde-polluted environments can cause serious harm to human health.
[0003] Furthermore, traditional wood-based panels are easily combustible in the event of a fire, releasing toxic gases that can harm human health. In addition, indoor noise pollution severely impacts people's quality of life, and existing wood-based panels perform poorly in terms of sound absorption.
[0004] This invention aims to provide a new type of board material for indoor environments that integrates multiple functions such as flame retardancy and sound absorption, which helps to improve the quality of indoor environment and enhance people's quality of life. Summary of the Invention
[0005] This application provides a formaldehyde-removing, flame-retardant, and sound-absorbing multifunctional composite board, which has both flame-retardant and sound-absorbing functions, and the board has a stable structure and excellent mechanical properties.
[0006] The flame-retardant and sound-absorbing multifunctional composite panel provided in this application adopts the following technical solution:
[0007] A flame-retardant and sound-absorbing multifunctional composite board includes a base layer, fine particleboard layers disposed on both sides of the base layer, a veneer layer disposed on the side of the fine particleboard layers away from the base layer, a sound-absorbing layer disposed on the side of the veneer layers away from the fine particleboard layers, a flame-retardant layer disposed on the side of the sound-absorbing layers away from the veneer layers, and a decorative layer disposed on the side of the flame-retardant layer away from the sound-absorbing layers; both the base layer and the fine particleboard layers are particleboard layers, the base layer being a coarse particleboard layer and the fine particleboard layers being a fine particleboard layer; the composite board layers are connected by an adhesive layer.
[0008] Furthermore, the sound-absorbing layer is a polyester fiber layer.
[0009] Furthermore, the thickness ratio of the base layer, the fine material layer, and the single-layer veneer is (8-10):(1-2):(0.8-1).
[0010] Furthermore, the thickness ratio of the base layer to the polyester fiber layer is (8-10):(15-20).
[0011] Furthermore, the density of the base layer is 1000-1200 kg / m³. 3 .
[0012] Furthermore, the density of the fine material layer is 800-1000 kg / m³. 3 .
[0013] Furthermore, the density of the single-layer veneer is 600-800 kg / m³. 3 .
[0014] Furthermore, the density of the polyester fiber layer is 900-1100 kg / m³. 3 .
[0015] Furthermore, the wood shavings of the base layer are 2-3 cm long and 1-3 mm in diameter; the fine layer has a wood shaving mesh count of 20-30 and a thickness of 1-2 mm.
[0016] Furthermore, the thickness of the base layer is 8-10 mm, the thickness of the fine material layer is 1-2 mm, the thickness of the single-layer board is 15-20 mm, the thickness of the polyester fiber layer is 15-20 mm, and the thickness of the flame retardant layer is 2-3 mm.
[0017] The adhesive layer in this application can use inorganic adhesives, such as silicate cement and magnesium cement, which are common inorganic adhesives and are existing materials. This not only further improves the flame retardancy of the composite board but is also environmentally friendly, producing a formaldehyde-free board that fundamentally eliminates formaldehyde production.
[0018] The finishing layer of this application uses decorative paper. In specific applications, a photocatalyst can be impregnated on the decorative paper without affecting the performance of this application itself. The photocatalyst on the decorative paper generates electron-hole pairs under light irradiation. The electrons and holes participate in reduction and oxidation reactions respectively, generating hydroxyl radicals with strong oxidizing properties. The hydroxyl radicals oxidize formaldehyde molecules, ultimately converting them into harmless carbon dioxide and water.
[0019] The base layer and fine layer of this application are made of wood shavings mixed with inorganic adhesives, which is a conventional technology in the field. In addition, as needed, catalysts such as platinum (Pt), palladium (Pd), ruthenium (Ru), gold (Au) and other non-photocatalysts can be added during the mixing of wood shavings and inorganic adhesives. The introduction of catalysts will not affect the performance of the board material of this application. Moreover, the catalyst can break down the rich pore structure of the wood shavings and degrade the adsorbed formaldehyde into non-toxic and harmless substances.
[0020] It should be noted that the base layer mentioned in this application is a coarse particleboard layer and the fine particleboard layer is a fine particleboard layer. The terms "coarse" and "fine" refer to a comparative relationship between the two particleboard layers. That is, "coarse" in the coarse particleboard layer means that its shavings are coarser than those in the fine particleboard layer, and "fine" in the fine particleboard layer means that its shavings are finer than those in the coarse particleboard layer.
[0021] In summary, this application has the following beneficial effects:
[0022] 1. This application adopts the setting of flame-retardant layer and sound-absorbing layer, so that the composite board has both good flame-retardant performance and sound absorption performance. In addition, this application sets fine material layer and single board layer between the base layer and the sound-absorbing layer in sequence. The fine material layer is cell flower and the base layer is coarse wood shavings, which makes the compatibility between the layers better, and thus makes the base layer, fine material layer and single board layer stably connected, so that the composite board also has good structural stability.
[0023] 2. This application further optimizes the thickness and density of the base layer, fine material layer, single-layer board layer and sound-absorbing layer, so that the sound-absorbing layer has sufficient thickness to achieve good sound absorption performance, and the board as a whole has better structural stability. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the composite plate structure in the embodiments of this application.
[0025] Explanation of reference numerals in the attached diagram: 1. Base layer; 2. Fine material layer; 3. Veneer layer; 4. Sound-absorbing layer; 5. Flame-retardant layer; 6. Finishing layer; 7. Adhesive layer. Detailed Implementation
[0026] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0027] Example
[0028] like Figure 1 As shown, this embodiment provides a flame-retardant and sound-absorbing multifunctional composite board, including a base layer 1, a fine material layer 2, a single-layer veneer layer 3, a sound-absorbing layer 4, a flame-retardant layer 5, and a decorative layer 6. The fine material layer 2 is located on both sides of the base layer 1, the single-layer veneer layer 3 is located on the side of the fine material layer 2 away from the base layer 1, the sound-absorbing layer 4 is located on the side of the single-layer veneer layer 3 away from the fine material layer 2, the flame-retardant layer 5 is located on the side of the sound-absorbing layer 4 away from the single-layer veneer layer 3, and the decorative layer 6 is located on the side of the flame-retardant layer 5 away from the sound-absorbing layer 4. The layers are connected by an adhesive layer 7 with a thickness of 0.2-0.5 mm.
[0029] Specifically, base layer 1 is a particleboard layer, specifically a coarse particleboard layer. The particleboard particles in base layer 1 are 2–3 cm long and 1–3 mm in diameter. The thickness of base layer 1 is 8–10 mm, and its density is 1000–1200 kg / m³. 3 .
[0030] Fine particle layer 2 is also a particleboard layer, and it is a fine particleboard layer. The particle size of fine particle layer 2 is 20-30 mesh, the thickness of fine particle layer 2 is 1-2 mm, and the density of fine particle layer 2 is 800-1000 kg / m³. 3 .
[0031] Veneer layer 3 is a wood veneer with a thickness of 0.8–1 mm and a density of 600–1000 kg / m³. 3 It can be eucalyptus or birch.
[0032] The sound-absorbing layer 4 is a polyester fiber layer with a thickness of 15-20 mm and a density of 900-1100 kg / m³. 3 It has a certain sound absorption function, which can improve the sound absorption effect of the composite board.
[0033] The flame retardant layer 5 is 2-3 mm thick and is an inorganic layer, such as thin magnesium oxide board or calcium silicate board.
[0034] The finishing layer 6 can be decorative paper, and as needed, a photocatalyst can be impregnated on the decorative paper. Under light irradiation, the photocatalyst will degrade the formaldehyde adsorbed on the surface.
[0035] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A flame-retardant and sound-absorbing multifunctional composite board, characterized in that, The composite board includes a base layer (1), a fine particleboard layer (2) disposed on both sides of the base layer (1), a veneer layer (3) disposed on the side of the fine particleboard layer (2) away from the base layer (1), a sound-absorbing layer (4) disposed on the side of the veneer layer (3) away from the fine particleboard layer (2), a flame-retardant layer (5) disposed on the side of the sound-absorbing layer (4) away from the veneer layer (3), and a decorative layer (6) disposed on the side of the flame-retardant layer (5) away from the sound-absorbing layer (4); the base layer (1) and the fine particleboard layer (2) are both particleboard layers, the base layer (1) is a coarse particleboard layer, and the fine particleboard layer (2) is a fine particleboard layer; the composite board layers are connected by an adhesive layer (7).
2. The flame-retardant and sound-absorbing multifunctional composite board according to claim 1, characterized in that, The sound-absorbing layer (4) is a polyester fiber layer.
3. The flame-retardant and sound-absorbing multifunctional composite board according to claim 2, characterized in that, The thickness ratio of the base layer (1), the fine material layer (2), and the single-layer board (3) is (8-10):(1-2):(0.8-1).
4. The flame-retardant and sound-absorbing multifunctional composite board according to claim 3, characterized in that, The thickness ratio of the base layer (1) to the polyester fiber layer is (8-10):(15-20).
5. The flame-retardant and sound-absorbing multifunctional composite board according to claim 4, characterized in that, The density of the base layer (1) is 1000-1200 kg / m³. 3 .
6. The flame-retardant and sound-absorbing multifunctional composite board according to claim 4, characterized in that, The density of the fine material layer (2) is 800-1000 kg / m³. 3 .
7. The flame-retardant and sound-absorbing multifunctional composite board according to claim 4, characterized in that, The density of the single-layer veneer (3) is 600-800 kg / m³. 3 .
8. The flame-retardant and sound-absorbing multifunctional composite board according to claim 4, characterized in that, The density of the polyester fiber layer is 900-1100 kg / m³. 3 .
9. A flame-retardant and sound-absorbing multifunctional composite board according to claim 4, characterized in that, The shavings of the base layer (1) are 2-3 cm long and 1-3 mm in diameter; the shavings of the fine layer (2) are 20-30 mesh and 1-2 mm thick.
10. A flame-retardant and sound-absorbing multifunctional composite board according to claim 4, characterized in that, The thickness of the base layer (1) is 8-10 mm, the thickness of the fine material layer (2) is 1-2 mm, the thickness of the single-layer board layer (3) is 15-20 mm, the thickness of the polyester fiber layer is 15-20 mm, and the thickness of the flame retardant layer (5) is 2-3 mm.