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

Abstract

The invention discloses a wood veneer wall construction method based on a novel composite board, the composite board and a preparation method, and belongs to the technical field of wood veneer wall construction.The method comprises the steps that firstly, a framework is built on the outer side of a wall body, the framework is tightly attached to the wall body, and the framework and the wall body are fixed; secondly, a wood veneer wall composite board is prepared, wherein the wood veneer wall composite board comprises a high-strength aerogel integrated heat preservation board and a surface wood veneer layer; thirdly, concrete is sprayed on the wall body between the frameworks, and a concrete layer is formed; and fourthly, the wood veneer wall composite board is installed on the wall body, the face, without the surface wood veneer layer, of the wood veneer wall composite board is attached to the concrete layer, and fixed installation of the wood veneer wall composite board is achieved. In this way, the flame-retardant cable material has the following advantages that (1) the flame-retardant cable material is safe and good in flame-retardant effect; (2) the energy-saving property: the heat preservation effect is good; (3) comfort: efficient sound insulation can be realized; (4) health property: a mildew-proof effect is achieved; and (5) environmental protection: low carbon and zero formaldehyde.

Description

Technical Field

[0001] The 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, a composite board and a preparation method thereof. Background Art

[0002] Thermal insulation materials (polyurethane foam boards, rock wool boards, etc.) are used to reduce heat transfer inside and outside buildings, and play a key role in maintaining a comfortable indoor temperature. At the same time, they usually have certain fireproof, moisture-proof, and sound-proof properties, which can improve the overall performance and durability of the building, and have a long service life. They are one of the indispensable and important materials in modern buildings.

[0003] The construction process of thermal insulation materials generally includes: building a framework, installing thermal insulation materials, fixing, etc. For example, CN108708482B discloses a magnetic gypsum board partition wall construction method. First, a plurality of through-core keels and light steel keels are used to build a framework; then the inner gypsum board with a square opening is installed on the side of the framework; then the magnet is fixed in the wooden frame; finally, the wooden frame is placed in the square opening, and the square frame and the outer gypsum board are fixed.

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

[0005] Based on this, the present invention designs a wood facing wall construction method based on a novel 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 wood facing wall construction method 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 facing 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 comprises 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 900 W); then, the mixture is placed in a freezer at -5 to 0°C for 1 to 2 hours, seaweed fiber, silicon-oxygen carbon aerogel and the remaining amount of 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 and molding it under high temperature of 115-120° C. and high pressure of 4-5.5 MPa to obtain a molded 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 a mixture of tri(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, add 3-5% epoxy resin and 1.9-3.2% sodium bicarbonate, and stir and modify it at 89-95° C. for 2-3 hours.

[0018] Furthermore, step 3 is specifically as follows: before covering the surface wood veneer layer, first use a vacuum machine to suck out the gas and moisture in the high-strength aerogel integrated insulation board, then apply glue on the inner surface of the surface wood veneer layer, and then adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and use a roller pressing method to discharge the bubbles and excess glue, and obtain the wood veneer wall composite board after drying.

[0019] In order to better achieve the purpose of the present invention, the present invention also provides a wood veneer wall composite board, the wood veneer wall composite board comprises 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 900 W); then, the mixture is placed in a freezer at -5 to 0°C for 1 to 2 hours, seaweed fiber, silicon-oxygen carbon aerogel and the remaining amount of 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 and molding it under high temperature of 115-120° C. and high pressure of 4-5.5 MPa to obtain a molded 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; the flame retardant is a mixture of tri(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, add 3-5% epoxy resin and 1.9-3.2% sodium bicarbonate, and stir and modify 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 beneficial effects: (1) Safety: good flame retardant effect; (2) Energy saving: good thermal insulation effect; (3) Comfort: efficient sound insulation; (4) Health: mildew-proof effect; (5) Environmental protection: low carbon and zero formaldehyde. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination 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 creative work are within the scope of protection of the present invention.

[0031] Embodiment 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, wherein the wood veneer wall composite board comprises a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is as follows:

[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 tri (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 referred to: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation.

[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: Disperse epoxy resin modified fly ash, cellulose nanocrystals and nano-titanium dioxide in acetone, add 2 / 3 of polydimethylsiloxane dropwise while stirring, remove the acetone, and then microwave for 14 minutes (power 800W); then place it in a freezer at 0°C for 1 hour, take it out and add seaweed fiber, silicon oxygen carbon aerogel and the remaining polydimethylsiloxane, and continue microwave treatment for 15 minutes;

[0038] Step 3: pouring the obtained material into a mold, and pressing and molding it under the conditions of high temperature of 115°C and high pressure of 5.5MPa to obtain a molded 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] Embodiment 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, wherein the wood veneer wall composite board comprises a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is as follows:

[0045] Step 1: weigh the raw materials: 32% of epoxy resin modified fly ash, 28% of silicon oxygen carbon aerogel, 13% of polydimethylsiloxane (PDMS), 6% of seaweed fiber, 12% of cellulose nanocrystals, 4% of nano titanium dioxide, and the balance is flame retardant; the flame retardant is a mixture of tri (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 referred to: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation.

[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 and modified at 95° C. for 2 hours.

[0048] Step 2: Disperse epoxy resin modified fly ash, cellulose nanocrystals and nano-titanium dioxide in acetone, add 2 / 3 of polydimethylsiloxane while stirring, remove the acetone, and then microwave for 22 minutes (power 900W); then freeze at -5°C for 2 hours, take out and add seaweed fiber, silicon oxygen carbon aerogel and the remaining polydimethylsiloxane, and continue microwave treatment for 10 minutes;

[0049] Step 3: pouring the obtained material into a mold, and pressing and molding it under the conditions of high temperature of 120°C and high pressure of 4MPa to obtain a molded 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] Embodiment 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, wherein the wood veneer wall composite board comprises a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is as follows:

[0056] Step 1: weigh the raw materials: 31.2% of epoxy resin modified fly ash, 29.8% of silicon oxygen carbon aerogel, 12.5% ​​of polydimethylsiloxane (PDMS), 7.3% of seaweed fiber, 10.5% of cellulose nanocrystals, 6.3% of nano titanium dioxide, and the balance is flame retardant; the flame retardant is a mixture of tri (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 referred to: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation.

[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 modified treatment is carried out at 92° C. with stirring for 2.5 hours.

[0059] Step 2: Disperse epoxy resin modified fly ash, cellulose nanocrystals and nano-titanium dioxide in acetone, add 2 / 3 of polydimethylsiloxane while stirring, remove the acetone, and then microwave for 20 minutes (power 850W); then freeze at -3°C for 1.6 hours, take out and add seaweed fiber, silicon oxygen carbon aerogel and the remaining polydimethylsiloxane, and continue microwave treatment for 12 minutes;

[0060] Step 3: pouring the obtained material into a mold, and pressing and molding it under the conditions of high temperature of 118°C and high pressure of 5MPa to obtain a molded 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, wherein the wood veneer wall composite board comprises a high-strength aerogel integrated insulation board and a surface wood veneer layer; the specific preparation method is as follows:

[0069] Step 1: weigh the raw materials: 31.2% of epoxy resin modified fly ash, 29.8% of silicon oxygen carbon aerogel, 12.5% ​​of polydimethylsiloxane (PDMS), 7.3% of seaweed fiber, 10.5% of cellulose nanocrystals, 6.3% of nano titanium dioxide, and the balance is flame retardant; the flame retardant is a mixture of tri (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 referred to: Zhu Wenxia et al. Preparation of lightweight and high-strength silicon-oxygen-carbon aerogel and its high-temperature thermal insulation.

[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 modified treatment is carried out at 92° C. with stirring for 2.5 hours.

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

[0073] Step 3: pouring the obtained material into a mold, and pressing and molding it under the conditions of high temperature of 118°C and high pressure of 5MPa to obtain a molded 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 Examples The thermal insulation performance, flame retardancy, sound insulation performance, mildew resistance, strength and other effects of the high-strength aerogel integrated thermal insulation board prepared in Example 1 and Comparative Example 1 were tested.

[0078] project Example 1 Comparative Example 1 standard UL94 / Grade 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 realizes grafting modification between the materials after microwave treatment. Then, freezing treatment is beneficial to fix the network structure of the materials, and then seaweed fiber, silicon oxygen carbon aerogel and the remaining polydimethylsiloxane are added to fill the network structure, thereby enriching the network result and having 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) Healthiness: 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 the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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 embodiments of the present invention.

Claims

1. A wood facing wall construction method 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 comprises 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: Disperse epoxy resin modified fly ash, cellulose nanocrystals and nano-titanium dioxide in a solvent, add 2 / 3 of polydimethylsiloxane, remove the solvent, and then microwave for 14-22 minutes; then place in a freezer at -5-0°C for 1-2 hours, take out and add seaweed fiber, silicon-oxygen carbon aerogel and the remaining polydimethylsiloxane, and continue microwave treatment for 10-15 minutes; Step 2: pouring the obtained material into a mold, and pressing and molding it under the conditions of high temperature of 115-120°C and high pressure of 4-5.5MPa to obtain a molded 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 facing wall based on a novel composite board according to claim 1, characterized in that: In step 1, acetone is used as the solvent; and the flame retardant is prepared by mixing tri(2-chloroethyl) phosphate and ammonium polyphosphate in a ratio of 1 to 2:

1.

3. The method for constructing a wood facing 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 facing wall based on a novel composite board according to claim 3 is characterized in that: Step 3 is specifically as follows: before covering the surface wood veneer layer, first use a vacuum machine to suck out the gas and moisture in the high-strength aerogel integrated insulation board, then apply glue on the inner surface of the surface wood veneer layer, and then adhere the surface wood veneer layer to the surface of the high-strength aerogel integrated insulation board, and use a roller pressing method to discharge the bubbles and excess glue, and obtain the wood veneer wall composite board after drying.

5. A wood facing wall composite board used in the wood facing wall construction method according to claim 4, characterized in that: The wood facing wall composite board comprises a high-strength aerogel integrated insulation board and a surface wood facing layer; 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.

6. The wood veneer wall composite panel according to claim 3, characterized in that: The epoxy resin is a polyphenol type 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: Disperse epoxy resin modified fly ash, cellulose nanocrystals and nano-titanium dioxide in a solvent, add 2 / 3 of polydimethylsiloxane, remove the solvent, and then microwave for 14-22 minutes; then place in a freezer at -5-0°C for 1-2 hours, take out and add seaweed fiber, silicon-oxygen carbon aerogel and the remaining polydimethylsiloxane, and continue microwave treatment for 10-15 minutes; Step 2: pouring the obtained material into a mold, and pressing and molding it under the conditions of high temperature of 115-120°C and high pressure of 4-5.5MPa to obtain a molded 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 the wood veneer wall composite board according to claim 7, characterized in that: The solvent is acetone; the flame retardant is prepared by mixing tri(2-chloroethyl)phosphate and ammonium polyphosphate in a ratio of 1 to 2:

1.

9. The method for preparing the wood veneer wall composite board according to claim 8, characterized in that: The preparation method of the epoxy resin modified fly ash is as follows: after calcining the fly ash, 3-5% of epoxy resin and 1.9-3.2% of sodium bicarbonate are added, and the modified treatment is carried out 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.