Wood veneer wall construction method based on novel composite board, composite board and preparation method

Abstract

The present invention discloses a wood veneer wall construction method based on a novel composite board, a composite board, and a preparation method, which belongs to the technical field of wood veneer wall construction. The method comprises the following steps: first, building a skeleton outside a wall, the skeleton being close to the wall, and fixing the skeleton to the wall; second, preparing a wood veneer wall composite board, the wood veneer wall composite board comprising a high-strength aerogel integrated insulation board and a surface wood veneer layer; third, spraying concrete on the wall between the skeletons to form a concrete layer; and fourth, installing the wood veneer wall composite board on the wall, with the side of the wood veneer wall composite board without the surface wood veneer layer being attached to the concrete layer, thereby achieving fixed installation of the wood veneer wall composite board. Through the above-mentioned method, the present invention has the following advantages: (1) safety: good flame retardant effect; (2) energy saving: good thermal insulation effect; (3) comfort: high-efficiency sound insulation can be achieved; (4) health: mildew-proof effect; (5) environmental protection: low carbon and zero formaldehyde.

Description

Technical Field

[0001] The present invention relates to the technical field of wood facing wall construction, and in particular to a wood facing wall construction method based on a novel composite board, the composite board and a preparation method thereof. Background Art

[0002] Thermal insulation materials (such as polyurethane foam boards and rock wool boards) are used to reduce heat transfer between buildings and the outside world, playing a key role in maintaining a comfortable indoor temperature. They also typically offer fire, moisture, and sound insulation properties, improving the overall performance and durability of buildings. They also have a long service life, making them an essential material in modern architecture.

[0003] The insulation material installation process generally involves building the framework, installing the insulation material, and securing it. For example, CN108708482B discloses a method for constructing a magnetic gypsum board partition wall. The method involves first building the framework using multiple through-core keels and light steel keels. Then, inner gypsum boards with square openings are installed on the sides of the framework. Magnets are then secured to a wooden frame. Finally, the wooden frame is placed in the square openings, and the frame and outer gypsum boards are secured.

[0004] However, in the prior art, since it is difficult for thermal insulation materials to simultaneously achieve good thermal insulation effect, good flame retardancy, good sound insulation, mildew resistance, high strength and light weight, their application areas are limited.

[0005] Based on this, the present invention designs a wood veneer wall construction method based on a new composite board, a composite board and a preparation method to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a construction method of a wood veneer wall based on a novel composite board, a composite board and a preparation method thereof.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The construction method of the wood veneer wall based on the new composite board includes the following steps:

[0009] Step 1: Build a frame outside the wall, close to the wall, and fix the frame to the wall;

[0010] Step 2: Prepare a wood veneer wall composite board, wherein the wood veneer wall composite board includes a high-strength aerogel integrated insulation board and a surface wood veneer layer; the preparation method of the wood veneer wall composite board is as follows:

[0011] Step 1: Epoxy resin-modified fly ash, cellulose nanocrystals, and nano-titanium dioxide are dispersed in a solvent, 2 / 3 of polydimethylsiloxane is added dropwise, the solvent is removed, and microwave treatment is performed for 14 to 22 minutes (power 800 to 900W); the mixture is then frozen at -5 to 0°C for 1 to 2 hours, and then seaweed fiber, silicon-oxygen carbon aerogel, and the remaining polydimethylsiloxane are added, and microwave treatment is continued for 10 to 15 minutes.

[0012] Step 2: pouring the obtained material into a mold and pressing it under high temperature of 115-120° C. and high pressure of 4-5.5 MPa to obtain a high-strength aerogel integrated insulation board;

[0013] Step 3: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying;

[0014] Step 3: Spray concrete on the wall between the frames to form a concrete layer;

[0015] Step 4: Install the wood veneer wall composite panel on the wall, and adhere the side of the wood veneer wall composite panel without the surface wood veneer layer to the concrete layer to achieve fixed installation of the wood veneer wall composite panel.

[0016] Furthermore, in step 1, the solvent is acetone; and the flame retardant is prepared by mixing tris(2-chloroethyl)phosphate and ammonium polyphosphate in a ratio of 1 to 2:1.

[0017] Furthermore, in step 1, the preparation method of the epoxy resin modified fly ash is: after calcining the fly ash, adding 3-5% epoxy resin and 1.9-3.2% sodium bicarbonate, stirring and modifying at 89-95° C. for 2-3 hours.

[0018] Furthermore, step 3 is specifically as follows: before covering the surface wood veneer layer, a vacuum machine is first used to suck out the gas and moisture in the high-strength aerogel integrated insulation board, and then glue is applied to the inner surface of the surface wood veneer layer. After that, the surface wood veneer layer is adhered to the surface of the high-strength aerogel integrated insulation board, and the bubbles and excess glue are discharged by rolling. After drying, a wood veneer wall composite board is obtained.

[0019] In order to better achieve the purpose of the present invention, the present invention also provides a wood veneer wall composite panel, which includes a high-strength aerogel integrated insulation board and a surface wood veneer layer;

[0020] The high-strength aerogel integrated insulation board comprises the following raw materials in percentage by weight: 30-32% epoxy resin modified fly ash, 28-30% silicon oxygen carbon aerogel, 11-13% polydimethylsiloxane, 6-10% seaweed fiber, 8-12% cellulose nanocrystals, 4-7% nano titanium dioxide, and the balance is flame retardant.

[0021] Furthermore, the epoxy resin is a polyphenol glycidyl ether epoxy resin.

[0022] In order to better achieve the purpose of the present invention, the present invention also provides a method for preparing a wood veneer wall composite board, comprising the following steps:

[0023] Step 1: Epoxy resin-modified fly ash, cellulose nanocrystals, and nano-titanium dioxide are dispersed in a solvent, 2 / 3 of polydimethylsiloxane is added dropwise, the solvent is removed, and microwave treatment is performed for 14 to 22 minutes (power 800 to 900W); the mixture is then frozen at -5 to 0°C for 1 to 2 hours, and then seaweed fiber, silicon-oxygen carbon aerogel, and the remaining polydimethylsiloxane are added, and microwave treatment is continued for 10 to 15 minutes.

[0024] Step 2: pouring the obtained material into a mold and pressing it under high temperature of 115-120° C. and high pressure of 4-5.5 MPa to obtain a high-strength aerogel integrated insulation board;

[0025] Step 3: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying.

[0026] Furthermore, the solvent is acetone; and the flame retardant is prepared by mixing tris(2-chloroethyl)phosphate and ammonium polyphosphate in a ratio of 1 to 2:1.

[0027] Furthermore, the preparation method of the epoxy resin modified fly ash is: after calcining the fly ash, adding 3-5% epoxy resin and 1.9-3.2% sodium bicarbonate, stirring and modifying at 89-95° C. for 2-3 hours.

[0028] In order to better achieve the purpose of the present invention, the present invention also provides a wood veneer wall composite board prepared according to the preparation method.

[0029] Compared with the prior art, the present invention has the following advantages: (1) safety: good flame retardant effect; (2) energy saving: good thermal insulation effect; (3) comfort: high-efficiency sound insulation; (4) health: mildew-proof effect; (5) environmental protection: low carbon and zero formaldehyde. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1: In some embodiments, a method for constructing a wood veneer wall based on a novel composite board comprises the following steps:

[0032] Step 1: Build a frame outside the wall, close to the wall, and fix the frame to the wall;

[0033] Step 2: Prepare a wood veneer wall composite board, which includes a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is:

[0034] Step 1: Weigh the raw materials: 30% epoxy resin-modified fly ash, 30% silicon oxygen carbon aerogel, 11% polydimethylsiloxane (PDMS), 10% seaweed fiber, 8% cellulose nanocrystals, 7% nano-titanium dioxide, and the balance is flame retardant; the flame retardant is a mixture of tris (2-chloroethyl) phosphate and ammonium polyphosphate in a ratio of 1:1; the epoxy resin is a polyphenol type glycidyl ether epoxy resin;

[0035] The preparation method of the silicon-oxygen-carbon aerogel is referenced from: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation properties.

[0036] The preparation method of the epoxy resin modified fly ash is as follows: after calcining the fly ash, 3% of epoxy resin and 3.2% of sodium bicarbonate are added, and the mixture is stirred and modified at 89° C. for 3 hours.

[0037] Step 2: Epoxy resin-modified fly ash, cellulose nanocrystals, and nano-titanium dioxide were dispersed in acetone, and 2 / 3 of polydimethylsiloxane was added dropwise while stirring. The acetone was then removed and the mixture was microwaved for 14 minutes (power 800W). The mixture was then frozen at 0°C for 1 hour, and then seaweed fiber, silicon-oxycarbon aerogel, and the remaining polydimethylsiloxane were added and microwaved for another 15 minutes.

[0038] Step 3: pouring the obtained material into a mold and pressing it under the conditions of high temperature of 115°C and high pressure of 5.5MPa to obtain a high-strength aerogel integrated insulation board;

[0039] Step 4: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying;

[0040] Step 3: Spray concrete on the wall between the frames to form a concrete layer;

[0041] Step 4: Install the wood veneer wall composite panel on the wall, and adhere the side of the wood veneer wall composite panel without the surface wood veneer layer to the concrete layer to achieve fixed installation of the wood veneer wall composite panel.

[0042] Example 2: In some embodiments, a method for constructing a wood veneer wall based on a novel composite board comprises the following steps:

[0043] Step 1: Build a frame outside the wall, close to the wall, and fix the frame to the wall;

[0044] Step 2: Prepare a wood veneer wall composite board, which includes a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is:

[0045] Step 1: Weigh the raw materials: 32% epoxy resin modified fly ash, 28% silicon oxygen carbon aerogel, 13% polydimethylsiloxane (PDMS), 6% seaweed fiber, 12% cellulose nanocrystals, 4% nano-titanium dioxide, and the balance is flame retardant; the flame retardant is a mixture of tris (2-chloroethyl) phosphate and ammonium polyphosphate in a ratio of 2:1; the epoxy resin is a polyphenol type glycidyl ether epoxy resin;

[0046] The preparation method of the silicon-oxygen-carbon aerogel is referenced from: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation properties.

[0047] The preparation method of the epoxy resin modified fly ash is as follows: after calcining the fly ash, 5% of epoxy resin and 1.9% of sodium bicarbonate are added, and the mixture is stirred at 95° C. for modification for 2 hours.

[0048] Step 2: Epoxy resin-modified fly ash, cellulose nanocrystals, and nano-titanium dioxide were dispersed in acetone. Two-thirds of polydimethylsiloxane was added dropwise while stirring. The acetone was then removed and the mixture was microwaved for 22 minutes (900 W). The mixture was then frozen at -5°C for 2 hours, and then the seaweed fiber, silicon-oxygen carbon aerogel, and the remaining polydimethylsiloxane were added. The microwave treatment was continued for 10 minutes.

[0049] Step 3: pouring the obtained material into a mold and pressing it under the conditions of high temperature of 120°C and high pressure of 4MPa to obtain a high-strength aerogel integrated insulation board;

[0050] Step 4: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying;

[0051] Step 3: Spray concrete on the wall between the frames to form a concrete layer;

[0052] Step 4: Install the wood veneer wall composite panel on the wall, and adhere the side of the wood veneer wall composite panel without the surface wood veneer layer to the concrete layer to achieve fixed installation of the wood veneer wall composite panel.

[0053] Example 3: In some embodiments, a method for constructing a wood veneer wall based on a novel composite board comprises the following steps:

[0054] Step 1: Build a frame outside the wall, close to the wall, and fix the frame to the wall;

[0055] Step 2: Prepare a wood veneer wall composite board, which includes a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is:

[0056] Step 1: Weigh the raw materials: 31.2% epoxy resin modified fly ash, 29.8% silicon oxygen carbon aerogel, 12.5% polydimethylsiloxane (PDMS), 7.3% seaweed fiber, 10.5% cellulose nanocrystals, 6.3% nano-titanium dioxide, and the balance is flame retardant; the flame retardant is a mixture of tris (2-chloroethyl) phosphate and ammonium polyphosphate in a ratio of 1:1; the epoxy resin is a polyphenol type glycidyl ether epoxy resin;

[0057] The preparation method of the silicon-oxygen-carbon aerogel is referenced from: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation properties.

[0058] The preparation method of the epoxy resin modified fly ash is as follows: after calcining the fly ash, 2% of epoxy resin and 2.4% of sodium bicarbonate are added, and the mixture is stirred and modified at 92° C. for 2.5 hours.

[0059] Step 2: Epoxy resin-modified fly ash, cellulose nanocrystals, and nano-titanium dioxide were dispersed in acetone. Two-thirds of polydimethylsiloxane was added dropwise while stirring. The acetone was then removed and the mixture was microwaved for 20 minutes (850W power). The mixture was then frozen at -3°C for 1.6 hours, and then seaweed fiber, silicon-oxygen carbon aerogel, and the remaining polydimethylsiloxane were added. The microwave treatment was continued for 12 minutes.

[0060] Step 3: pouring the obtained material into a mold and pressing it under high temperature of 118°C and high pressure of 5MPa to obtain a high-strength aerogel integrated insulation board;

[0061] Step 4: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying;

[0062] Step 3: Spray concrete on the wall between the frames to form a concrete layer;

[0063] Step 4: Install the wood veneer wall composite panel on the wall, and adhere the side of the wood veneer wall composite panel without the surface wood veneer layer to the concrete layer to achieve fixed installation of the wood veneer wall composite panel.

[0064] The present invention uses epoxy resin modified fly ash as the main base material and uses silicon oxygen carbon aerogel to replace part of the base material, thereby reducing the quality of the plate while using fly ash waste.

[0065] Comparative Example 1

[0066] In some embodiments, a method for constructing a wood veneer wall based on a novel composite panel comprises the following steps:

[0067] Step 1: Build a frame outside the wall, close to the wall, and fix the frame to the wall;

[0068] Step 2: Prepare a wood veneer wall composite board, which includes a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is:

[0069] Step 1: Weigh the raw materials: 31.2% epoxy resin modified fly ash, 29.8% silicon oxygen carbon aerogel, 12.5% polydimethylsiloxane (PDMS), 7.3% seaweed fiber, 10.5% cellulose nanocrystals, 6.3% nano-titanium dioxide, and the balance is flame retardant; the flame retardant is a mixture of tris (2-chloroethyl) phosphate and ammonium polyphosphate in a ratio of 1:1; the epoxy resin is a polyphenol type glycidyl ether epoxy resin;

[0070] The preparation method of the silicon-oxygen-carbon aerogel is referenced from: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation properties.

[0071] The preparation method of the epoxy resin modified fly ash is as follows: after calcining the fly ash, 2% of epoxy resin and 2.4% of sodium bicarbonate are added, and the mixture is stirred and modified at 92° C. for 2.5 hours.

[0072] Step 2: Mix all the ingredients directly and microwave for 32 min (power 850W);

[0073] Step 3: pouring the obtained material into a mold and pressing it under high temperature of 118°C and high pressure of 5MPa to obtain a high-strength aerogel integrated insulation board;

[0074] Step 4: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying;

[0075] Step 3: Spray concrete on the wall between the frames to form a concrete layer;

[0076] Step 4: Install the wood veneer wall composite panel on the wall, and adhere the side of the wood veneer wall composite panel without the surface wood veneer layer to the concrete layer to achieve fixed installation of the wood veneer wall composite panel.

[0077] Experimental Example The thermal insulation performance, flame retardancy, sound insulation performance, mildew resistance, strength and other effects of the high-strength aerogel integrated insulation board prepared in Example 1 and Comparative Example 1 were tested.

[0078] project Example 1 Comparative Example 1 standard UL94 / level V-0 V-1 GB / T 2408-2021 Thermal conductivity w / (m·k) 0.02 0.06 GB / T 32981-2016 Compressive strength (MPa) 20.3 19.9 GB / T 5072-2023 Noise Reduction Coefficient (NRC) 0.94 0.90 GB / T 6731-2023 Mildew resistance level Level 0 Level 0 LY / T 2230-2013

[0079] The present invention disperses epoxy resin-modified fly ash, cellulose nanocrystals and nano-titanium dioxide in a solvent, drops 2 / 3 of polydimethylsiloxane, and performs microwave treatment to achieve grafting modification between the materials. Subsequently, a freezing treatment is beneficial to fixing the network structure of the materials. Alginate fiber, silicon-oxycarbon aerogel and the remaining polydimethylsiloxane are then added to fill the network structure, enriching the network structure while achieving a reinforcing effect.

[0080] It can be seen that the present invention has the following technical effects:

[0081] (1) Safety: good flame retardant effect;

[0082] (2) Energy saving: good thermal insulation effect;

[0083] (3) Comfort: can achieve efficient sound insulation;

[0084] (4) Health: has anti-mildew effect;

[0085] (5) Environmental protection: low carbon and zero formaldehyde.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A construction method for a wood veneer wall based on a novel composite board, characterized in that: The following steps are involved: Step 1: Build a frame outside the wall, close to the wall, and fix the frame to the wall; Step 2: Prepare a wood veneer wall composite board, wherein the wood veneer wall composite board includes a high-strength aerogel integrated insulation board and a surface wood veneer layer; the preparation method of the wood veneer wall composite board is as follows: Step 1: Epoxy resin-modified fly ash, cellulose nanocrystals, and nano-titanium dioxide are dispersed in a solvent, 2 / 3 of polydimethylsiloxane is added dropwise, the solvent is removed, and microwave treatment is performed for 14-22 minutes. The mixture is then frozen at -5-0°C for 1-2 hours, and then seaweed fiber, silicon-oxygen carbon aerogel, and the remaining polydimethylsiloxane are added, followed by microwave treatment for another 10-15 minutes. Step 2: pouring the obtained material into a mold and pressing it under high temperature of 115-120°C and high pressure of 4-5.5 MPa to obtain a high-strength aerogel integrated insulation board; Step 3: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying; Step 3: Spray concrete on the wall between the frames to form a concrete layer; Step 4: Install the wood veneer wall composite panel on the wall, and adhere the side of the wood veneer wall composite panel without the surface wood veneer layer to the concrete layer to achieve fixed installation of the wood veneer wall composite panel.

2. The method for constructing a wood veneer wall based on a novel composite board according to claim 1, characterized in that: In step 1, acetone is used as the solvent.

3. The method for constructing a wood veneer wall based on a novel composite board according to claim 2, characterized in that: In step 1, the preparation method of the epoxy resin modified fly ash is: after calcining the fly ash, adding 3-5% epoxy resin and 1.9-3.2% sodium bicarbonate, stirring and modifying at 89-95° C. for 2-3 hours.

4. The method for constructing a wood veneer wall based on a novel composite board according to claim 3, characterized in that: Step 3 is specifically as follows: before covering the surface wood veneer layer, a vacuum machine is first used to suck out the gas and moisture in the high-strength aerogel integrated insulation board, and then glue is applied to the inner surface of the surface wood veneer layer. After that, the surface wood veneer layer is adhered to the surface of the high-strength aerogel integrated insulation board, and the bubbles and excess glue are discharged by rolling. After drying, the wood veneer wall composite board is obtained.

5. A wood facing wall composite board used in the wood facing wall construction method according to claim 4, characterized in that: The wood veneer wall composite panel includes a high-strength aerogel integrated insulation board and a surface wood veneer layer; The high-strength aerogel integrated insulation board includes the following raw materials in percentage by weight: 30-32% epoxy resin modified fly ash, 28-30% silicon oxygen carbon aerogel, 11-13% polydimethylsiloxane, 6-10% seaweed fiber, 8-12% cellulose nanocrystals, 4-7% nano titanium dioxide, and the balance is flame retardant; the flame retardant is prepared by mixing tris (2-chloroethyl) phosphate and ammonium polyphosphate in a ratio of 1-2.

6. The wood veneer wall composite panel according to claim 3, characterized in that: The epoxy resin is a polyphenol glycidyl ether epoxy resin.

7. A method for preparing a wood veneer wall composite board according to claim 6, characterized in that: The following steps are involved: Step 1: Epoxy resin-modified fly ash, cellulose nanocrystals, and nano-titanium dioxide are dispersed in a solvent, 2 / 3 of polydimethylsiloxane is added dropwise, the solvent is removed, and microwave treatment is performed for 14-22 minutes. The mixture is then frozen at -5-0°C for 1-2 hours, and then seaweed fiber, silicon-oxygen carbon aerogel, and the remaining polydimethylsiloxane are added, followed by microwave treatment for another 10-15 minutes. Step 2: pouring the obtained material into a mold and pressing it under high temperature of 115-120°C and high pressure of 4-5.5 MPa to obtain a high-strength aerogel integrated insulation board; Step 3: Adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and obtain the wood veneer wall composite board after drying.

8. The method for preparing a wood veneer wall composite board according to claim 7, characterized in that: The solvent is acetone; the flame retardant is prepared by mixing tris (2-chloroethyl) phosphate and ammonium polyphosphate in a ratio of 1 to 2:

1.

9. The method for preparing a wood veneer wall composite board according to claim 8, characterized in that: The preparation method of the epoxy resin modified fly ash comprises the following steps: calcining the fly ash, adding 3-5% epoxy resin and 1.9-3.2% sodium bicarbonate, and performing a modification treatment at 89-95° C. with stirring for 2-3 hours.

10. A wood veneer wall composite board prepared according to the preparation method according to claim 9.