Antibacterial and fireproof composite ecological board and preparation method thereof

Abstract

The invention provides an antibacterial and fireproof composite ecological board and a preparation method thereof. The composite ecological plate provided by the invention comprises a base plate layer and an antibacterial coating coated on the surface of the base plate layer, the base plate layer is formed by curing a base plate layer raw material, the base plate layer raw material comprises an inorganic cementing material, and the inorganic cementing material is a magnesium cementing material or a Portland cement cementing material. The components and the structure of the board are optimally designed, so that the board not only is fireproof, heat-insulating and environment-friendly, but also can effectively inhibit and remove bacteria, and a healthier and safer living environment is provided for human beings (or animals).

Description

Technical Field

[0001] The invention belongs to the field of new materials and new processes, and in particular relates to an antibacterial and fireproof composite ecological board and a preparation method thereof. Background Art

[0002] In social life, boards are widely used, whether in daily homes or in the decoration of hotels, companies, factories, etc. A large number of boards are used. However, most decorative boards are made of wood materials that are not fireproof and contain volatile organic compounds such as formaldehyde. For example, the common high-density board (also known as fiberboard) in the market is made of wood fiber or other plant fiber as raw materials. After slicing, steaming, fiber separation, drying, urea-formaldehyde resin or other adhesives are applied, and then hot-pressed to make artificial boards. Although the high-density board is characterized by high density and high strength, and is suitable for processing and decoration, adhesives such as urea-formaldehyde resin contain organic volatiles such as formaldehyde, which are not good for health. There are also energy-saving and heat-insulating light-density boards that are lighter than ordinary boards. They are made by combining inorganic adhesives with foamed polystyrene particles (or boards). They are used in applications such as exterior wall insulation, interior wall insulation, and ventilation ducts. There is no noticeable effect of such boards on human health when used outdoors; but if used indoors, because the polystyrene in such boards contains volatile organic compounds such as benzene and xylene, these substances will volatilize organic compounds over time, endangering human health without knowing it.

[0003] As human health awareness improves and health concepts continue to penetrate into people's lives, higher requirements are placed on various types of boards, whether it is density boards and floor tiles used for decoration, or thermal insulation and decorative integrated boards used for energy saving and heat preservation. They must not only have high strength and good toughness in mechanical properties, but also have fireproof and environmentally friendly functions, and further, they must be beneficial to the survival and health of people or animals. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an antibacterial and fireproof composite ecological board and a preparation method thereof. The composite ecological board provided by the present invention is not only fireproof, heat-insulating and environmentally friendly, but also can effectively inhibit bacteria and sterilize, providing a healthier and safer living environment for humans (or animals).

[0005] The present invention provides an antibacterial and fireproof composite ecological board, comprising a substrate layer and an antibacterial coating coated on the surface of the substrate layer;

[0006] The substrate layer is made by solidifying a substrate layer raw material, wherein the substrate layer raw material includes an inorganic gelling material, and the inorganic gelling material is a magnesium gelling material or a silicate cement gelling material.

[0007] Preferably, the magnesium gelling material is magnesium oxychloride gelling material, magnesium oxysulfide gelling material or magnesium phosphate gelling material.

[0008] Preferably, the raw material components of the magnesium oxychloride gelling material include light-burned magnesium oxide, magnesium chloride, a magnesia modifier, a waterproofing agent, an auxiliary filling material and water; and the auxiliary filling material includes sawdust.

[0009] Preferably, the raw material components of the magnesium oxysulfide gelling material include light-burned magnesium oxide, magnesium sulfate, a magnesium oxysulfide modifier, a waterproofing agent, auxiliary materials and water; and the auxiliary materials include a foaming agent.

[0010] Preferably, the raw material components of the silicate cementitious material include cement, silica fume, reinforcing admixture, waterproofing agent, blending agent and water.

[0011] Preferably, the substrate layer raw material further includes an organic adhesive, and the organic adhesive includes one or more of latex powder, cellulose, rice, glutinous rice, egg white, starch and maltodextrin.

[0012] Preferably, the substrate layer raw material further includes plant-based foaming material, and the plant-based foaming material is embedded in the substrate layer in the form of particles or plates.

[0013] Preferably, the plant-based foaming material contains inorganic refractory materials, and the inorganic refractory materials include one or more of magnesium oxide, rare earth, titanium dioxide, medical stone, zeolite, perlite, graphite, silica fume and light calcium.

[0014] Preferably, the antibacterial coating comprises one or more of silver, rare earth, titanium dioxide and magnesium oxide.

[0015] The present invention provides a method for preparing the antibacterial and fireproof composite ecological board described in the above technical solution, comprising the following steps:

[0016] A substrate layer is prepared, and an antibacterial coating is coated on the surface of the substrate layer to obtain an antibacterial and fireproof composite ecological board.

[0017] Compared with the prior art, the present invention provides an antibacterial and fireproof composite ecological board and a preparation method thereof. The composite ecological board provided by the present invention includes a substrate layer and an antibacterial coating coated on the surface of the substrate layer; the substrate layer is made by solidifying a substrate layer raw material, and the substrate layer raw material includes an inorganic gelling material, and the inorganic gelling material is a magnesium gelling material or a silicate cement gelling material. The present invention optimizes the composition and structure of the board material to make it not only fireproof, heat-insulating, and environmentally friendly, but also effectively inhibit and sterilize bacteria, providing a healthier and safer living environment for humans (or animals). DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only 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.

[0019] The present invention provides an antibacterial and fireproof composite ecological board, comprising a substrate layer and an antibacterial coating coated on the surface of the substrate layer;

[0020] The substrate layer is made by solidifying a substrate layer raw material, wherein the substrate layer raw material includes an inorganic gelling material, and the inorganic gelling material is a magnesium gelling material or a silicate cement gelling material.

[0021] In the composite ecological board provided by the present invention, in the raw materials of the substrate layer, the magnesium gelling material is preferably magnesium oxychloride gelling material, magnesium oxysulfide gelling material or magnesium phosphate gelling material.

[0022] In the composite ecological board provided by the present invention, in the raw material of the substrate layer, the raw material components of the magnesium oxychloride gelling material preferably include light-burned magnesium oxide, magnesium chloride, magnesia modifier, waterproofing agent, auxiliary filling material and water; wherein the mesh number of the light-burned magnesium oxide is preferably 180-200 meshes; the auxiliary filling material preferably includes sawdust. In the present invention, based on the content of the light-burned magnesium oxide in the raw material as 100 parts by weight, the content of the magnesium chloride in the raw material is preferably 50-80 parts by weight, more preferably 50 parts by weight; the content of the magnesia modifier in the raw material is preferably 0.5-3 parts by weight, more preferably 0.5 parts by weight; the content of the waterproofing agent in the raw material is preferably 0.8-3 parts by weight, more preferably 0.8-1 parts by weight; the content of the auxiliary filling material in the raw material is preferably 20-50 parts by weight, more preferably 20-30 parts by weight; the content of the water in the raw material is preferably 50-80 parts by weight, more preferably 50-60 parts by weight.

[0023] In the composite ecological board provided by the present invention, in the raw material of the substrate layer, the raw material components of the magnesium oxysulfide gelling material preferably include light-burned magnesium oxide, magnesium sulfate, magnesium oxysulfide modifier, waterproofing agent, auxiliary materials and water; wherein the mesh number of the light-burned magnesium oxide is preferably 180-200 meshes; the auxiliary materials preferably include a foaming agent. In the present invention, based on the content of the light-burned magnesium oxide in the raw material as 100 parts by weight, the content of magnesium sulfate in the raw material is preferably 50-80 parts by weight, more preferably 50 parts by weight; the content of the magnesium oxysulfide modifier in the raw material is preferably 0.5-2 parts by weight, more preferably 0.8 parts by weight; the content of the waterproofing agent in the raw material is preferably 0.8-3 parts by weight, more preferably 1.5 parts by weight; the content of the auxiliary materials in the raw material is preferably 0.5-3 parts by weight, more preferably 0.5 parts by weight; the content of the water in the raw material is preferably 50-80 parts by weight, more preferably 60 parts by weight.

[0024] In the composite ecological board provided by the present invention, in the raw materials of the substrate layer, the raw material components of the silicate cementitious material preferably include cement, silica fume, reinforcing admixture, waterproofing agent, and conditioning agent; wherein the cement is preferably P.O42.5, P.O52.5 or high-strength cement; the reinforcing admixture is preferably a mixture of rubber powder, cellulose and starch, and the mass ratio of the rubber powder, cellulose and starch is preferably 1:(0.5~2):(0.5~2), more preferably 1:1:1; the waterproofing agent is preferably silicone or waterproof emulsion. In the present invention, based on 150 parts by weight of the cement in the raw material, the content of the silica fume in the raw material is preferably 5 to 15 parts by weight, more preferably 10 parts by weight; the content of the reinforcing admixture in the raw material is preferably 1 to 5 parts by weight, more preferably 3 parts by weight; the content of the waterproofing agent in the raw material is preferably 0.5 to 2 parts by weight, more preferably 0.5 parts by weight; the content of the blending agent in the raw material is preferably 0.6 to 2 parts by weight, more preferably 1 part by weight; the content of water in the raw material is preferably 55 to 85 parts by weight, more preferably 76 parts by weight.

[0025] In the composite ecological board provided by the present invention, in the raw materials of the substrate layer, the adhesive component is mainly the inorganic gelling material that is natural, environmentally friendly and fireproof, preferably supplemented with a certain amount of natural and environmentally friendly organic adhesive, and the organic adhesive preferably includes one or more of latex powder, cellulose, rice, glutinous rice, egg white, starch and maltodextrin. In the present invention, the amount of the organic adhesive preferably accounts for 0-5wt% of the dry weight of the inorganic gelling material, and more preferably 0-2wt%.

[0026] In the composite ecological board provided by the present invention, the raw materials of the substrate layer preferably also include plant-based foaming materials, and the plant-based foaming materials are embedded in the substrate layer in the form of particles or plates. In the present invention, the plant-based foaming material is a material made of natural plant materials as the main raw materials, and is foamed by heating and pressurizing a foaming device, and has the functions of heat preservation, heat insulation, filling and density reduction. In the present invention, the natural plants for preparing the plant-based foaming material can be farmland straw (rice, wheat, sorghum, etc.), and (or) various fallen leaves, branches, roots, and (or) different medicinal materials and flowers with different fragrances can be added as needed. In the present invention, in order to increase the non-combustibility of the plant-based foaming material, a certain ratio of inorganic refractory materials can be added, and the inorganic refractory materials preferably include one or more of magnesium oxide, rare earth, titanium dioxide, medical stone, zeolite, perlite, graphite, silica fume and light calcium; the particle size of the inorganic refractory material is preferably 600 mesh to 200,000 mesh.

[0027] In the composite ecological board provided by the present invention, the components of the antibacterial coating preferably include one or more of silver, rare earth, titanium dioxide and magnesium oxide; wherein the particle size of the silver is preferably 1-100 nm, more preferably 20 nm; the particle size of the rare earth is preferably 180-500 mesh, more preferably 200 mesh; the particle size of the titanium dioxide is preferably 200-1000 mesh, more preferably 400 mesh; the particle size of the magnesium oxide is preferably 20-100 nm, more preferably 50 nm.

[0028] In the composite ecological board provided by the present invention, the mass of the antibacterial coating preferably accounts for 0.1 to 5 wt % of the dry weight of the inorganic gelling material in the substrate layer, and more preferably 0.2 to 2.5 wt %.

[0029] The present invention also provides a method for preparing the antibacterial and fireproof composite ecological board described in the above technical solution, which is characterized by comprising the following steps:

[0030] A substrate layer is prepared, and an antibacterial coating is coated on the surface of the substrate layer to obtain an antibacterial and fireproof composite ecological board.

[0031] In the specific implementation cases provided by the present invention, four specific categories of antibacterial and fireproof composite ecological boards and their corresponding preparation methods are provided. The four specific categories of antibacterial and fireproof composite ecological boards are: high-density antibacterial and fireproof composite ecological boards, magnesium homogeneous board-type antibacterial and fireproof composite ecological boards, cement-based homogeneous board-type antibacterial and fireproof composite ecological boards, and coated antibacterial and fireproof composite ecological boards. The specific introduction is as follows:

[0032] (1) High-density antibacterial and fire-resistant composite ecological board:

[0033] The board is prepared from the following raw materials: magnesium oxide, magnesium chloride, water, sawdust, modifier, waterproofing agent, rare earth and titanium dioxide, and the mass ratio of magnesium oxide, magnesium chloride, water, sawdust, modifier, waterproofing agent, rare earth and titanium dioxide is 100:(50-80):(50-80):(30-50):(0.5-3):(0.8-3):(0.5-2):(0.5-2).

[0034] The production process includes:

[0035] ① Magnesium chloride is mixed with water to obtain a brine solution with a Baume degree of 21 to 28 degrees;

[0036] ② Stir and mix magnesium oxide and brine, then add modifier, waterproofing agent and sawdust to mix into a uniform slurry;

[0037] ③ Mix rare earth and titanium dioxide separately and spray them on the outermost layer of the plate when preparing for production;

[0038] ④ Use the equipment to apply the release agent on the template, first put a layer of slurry, then a layer of non-woven fabric, then a layer of mesh cloth, then pour the mixed slurry, flatten it with a roller, then put a layer of mesh cloth and non-woven fabric, then spray the prepared rare earth and titanium dioxide evenly on it, flatten it with a roller, finally put it in the curing room for curing, shape and demould, and obtain a high-density antibacterial and fireproof composite ecological board.

[0039] (2) Magnesium homogeneous board type antibacterial and fireproof composite ecological board:

[0040] The board is prepared from the following raw materials: magnesium oxide, magnesium sulfate, water, plant-based foaming particles, modifier, waterproofing agent, foaming agent and nano silver. The usage ratio of magnesium oxide, magnesium sulfate, water, plant-based foaming particles, modifier, waterproofing agent, foaming agent and nano silver is preferably 100kg: (50-80)kg: (50-80)kg: (0.5-1)L: (0.5-2)kg: (0.8-3)kg: (0.5-3)kg: (0.5-2)kg.

[0041] Its production process:

[0042] ① Magnesium sulfate is mixed with water to obtain a magnesium sulfate solution with a Baume degree of 23 to 32 degrees;

[0043] ② The foaming agent is diluted with water to form a foaming solution, and a foaming device is used to produce water-based foam;

[0044] ③Prepare nanosilver and spray it on the outermost layer of the board during production;

[0045] ④ Stir and mix the magnesium oxide and magnesium sulfate solutions, then add the modifier and waterproofing agent, then add the plant-based foaming particles for premixing, and then add the water-based foam produced by the foaming device into the slurry and mix evenly;

[0046] ⑤ Use box-type equipment to apply the release agent on the inside of the box, and pour the stirred slurry into the box. Use a vibration pump to vibrate the slurry in the box to make it denser, solidify it into shape, and demold it;

[0047] ⑥ A layer of nano silver antibacterial layer is sprayed on the surface of the demoulded board to obtain a magnesium homogeneous board-type antibacterial and fireproof composite ecological board.

[0048] (3) Cement-based homogeneous board type antibacterial and fireproof composite ecological board:

[0049] The board is prepared from the following raw materials: cement, water, reinforcing admixture, plant-based foaming particles, waterproofing agent, blending agent, silica fume and nano-magnesium oxide, wherein the usage ratio of the cement, water, reinforcing admixture, plant-based foaming particles, waterproofing agent, blending agent, silica fume and nano-magnesium oxide is 150kg: (55-85)kg: (1.5-7.5)kg: (0.8-1.8)L: (0.5-2)kg: (0.6-2)kg: (5-15)kg: (0.5-2)kg.

[0050] Its production process:

[0051] ① First, mix cement, water, reinforcing admixture, silica fume and waterproofing agent into composite slurry;

[0052] ② Prepare the prepared plant-based foaming particles;

[0053] ③ Prepare nano magnesium oxide and spray it on the outermost layer of the board when preparing for production;

[0054] ④Stir the composite slurry and the plant-based foaming particles;

[0055] ⑤Use box-type equipment to apply the release agent on the inside of the box, and pour the slurry stirred in step ④ into the box, and use a vibration pump to vibrate the slurry in the box to make it denser, solidify it into shape, and demold it;

[0056] ⑥ A layer of nano magnesium oxide is bonded to the surface of the demoulded board to obtain a cement-based homogeneous board-type antibacterial and fireproof composite ecological board.

[0057] (4) Coated antibacterial and fireproof composite ecological board:

[0058] The board is prepared from the following raw materials: magnesium oxide, magnesium chloride, water, plant-based foam board, sawdust, modifier, waterproofing agent, rare earth and titanium dioxide, and the dosage ratio of magnesium oxide, magnesium chloride, water, plant-based foam board, sawdust, modifier, waterproofing agent, rare earth and titanium dioxide is 100kg: (50-80)kg: (50-80)kg: (0.5-1.5)L: (20-50)kg: (0.5-3)kg: (0.8-3)kg: (0.5-2)kg: (0.5-2)kg.

[0059] Its production process:

[0060] ① Magnesium chloride is mixed with water to obtain a brine solution with a Baume degree of 21 to 28 degrees;

[0061] ② Stir and mix magnesium oxide and brine, then add modifier, waterproofing agent and sawdust to mix into a uniform slurry;

[0062] ③ Use equipment to make plant-based foamed particles into plant-based foamed boards in advance for later use;

[0063] ④ Mix rare earth and titanium dioxide separately and spray or apply them to the outermost layer of the plate when preparing for production;

[0064] ⑤ Take the plant-based foam board as the core layer, first spread a layer of slurry on the surface of the foam board, then spread a layer of glass fiber cloth (mesh cloth), spread another layer of slurry after extracting the slurry, then wrap it with a layer of glass fiber cloth, and then spread a layer of slurry, and finally spray or apply the pre-mixed rare earth and titanium dioxide as the surface layer on the slurry, solidify and shape, and obtain a coated antibacterial and fireproof composite ecological board.

[0065] The present invention optimizes the composition and structure of the board material so that it is not only fireproof, heat-insulating and environmentally friendly, but also can effectively inhibit and remove bacteria, thereby providing a healthier and safer living environment for humans (or animals).

[0066] For the purpose of greater clarity, the invention is described in detail through the following examples.

[0067] Example 1

[0068] High-density antibacterial and fireproof composite ecological board

[0069] The board is prepared from the following raw materials in parts by weight: 100 kg of magnesium oxide, 50 kg of magnesium chloride, 60 kg of water, 30 kg of sawdust, 0.5 kg of magnesia modifier, 1 kg of waterproofing agent, 1 kg of rare earth, and 0.5 kg of titanium dioxide; wherein the magnesium oxide is 200 meshes, the magnesium chloride can be in the form of halogen flakes, the sawdust is 20-100 meshes, the rare earth is 200 meshes, and the titanium dioxide is 400 meshes.

[0070] Its production process:

[0071] ① Magnesium chloride is mixed with water to obtain a brine solution with a Baume degree of 23 degrees;

[0072] ② Stir and mix magnesium oxide and brine, then add magnesia modifier, waterproofing agent and sawdust to form a uniform slurry;

[0073] ③ Mix rare earth and titanium dioxide separately and spray them on the outermost layer of the plate when preparing for production;

[0074] ④ Use the equipment to apply the release agent on the template, first put a layer of slurry, then a layer of non-woven fabric, then a layer of mesh cloth, then pour the mixed slurry, flatten it with a roller, then put a layer of mesh cloth and non-woven fabric, then spray the prepared rare earth and titanium dioxide evenly on it, flatten it with a roller, finally put it in the curing room for curing, shape and demould, and obtain a high-density antibacterial and fireproof composite ecological board.

[0075] Composite ecological board performance evaluation:

[0076]

[0077] Example 2

[0078] Magnesium homogeneous board type antibacterial fireproof composite ecological board

[0079] The board is prepared from the following raw materials in parts by weight: 100 kg of magnesium oxide, 50 kg of magnesium sulfate, 60 kg of water, 0.7 L of plant-based foaming particles, 0.8 kg of magnesium oxysulfide modifier, 1.5 kg of waterproofing agent, 0.5 kg of foaming agent, and 1 kg of nanosilver; wherein the magnesium oxide is 200 mesh and the nanosilver is 20 nm.

[0080] Its production process:

[0081] ① Magnesium sulfate is mixed with water to obtain a magnesium sulfate solution with a Baume degree of 28 degrees;

[0082] ② The foaming agent is diluted with water at a ratio of 1:60 to form a foaming solution, and a foaming device is used to produce water-based foam;

[0083] ③Prepare nanosilver separately and spray it on the outermost layer of the board during production;

[0084] ④ Stir and mix the magnesium oxide and magnesium sulfate solution, then add the magnesium oxysulfide modifier and waterproofing agent, then add the plant-based foaming particles for premixing, and then add the water-based foam produced by the foaming device into the slurry and mix evenly;

[0085] ⑤ Use box-type equipment to apply the release agent on the inside of the box, and pour the stirred slurry into the box. Use a vibration pump to vibrate the slurry in the box to make it denser, solidify it into shape, and demold it;

[0086] ⑥ A layer of nano silver antibacterial layer is sprayed on the surface of the demoulded board to obtain a magnesium homogeneous board-type antibacterial and fireproof composite ecological board.

[0087] Composite ecological board performance evaluation:

[0088]

[0089] Example 3

[0090] Cement-based homogeneous board type antibacterial and fireproof composite ecological board

[0091] The board is prepared from the following raw materials in parts by weight: 150 kg of cement, 76 kg of water, 3 kg of reinforcing admixture, 1.3 L of plant-based foamed particles, 0.5 kg of waterproofing agent, 1 kg of blending agent, 10 kg of silica fume, and 1 kg of nano-magnesium oxide; wherein the cement is PO 42.5, the reinforcing admixture is a mixture of rubber powder, cellulose, and starch (the mass ratio of the three is 1:1:1), the waterproofing agent is an organic silicon waterproofing agent, and the nano-magnesium oxide is 50 nm.

[0092] Its production process:

[0093] ① First, mix cement, water, reinforcing admixture, silica fume and waterproofing agent into composite slurry;

[0094] ② Prepare the prepared plant-based foaming particles;

[0095] ③ Prepare nano magnesium oxide and spray it on the outermost layer of the board when preparing for production;

[0096] ④Stir the composite slurry and the plant-based foaming particles;

[0097] ⑤Use box-type equipment to apply the release agent on the inside of the box, and pour the slurry stirred in step ④ into the box, and use a vibration pump to vibrate the slurry in the box to make it denser, solidify it into shape, and demold it;

[0098] ⑥ A layer of nano magnesium oxide is bonded to the surface of the demoulded board to obtain a cement-based homogeneous board-type antibacterial and fireproof composite ecological board.

[0099] Composite ecological board performance evaluation:

[0100]

[0101] Example 4

[0102] Antibacterial and fireproof composite ecological board

[0103] The board is prepared from the following raw materials in parts by weight: 100 kg of magnesium oxide, 50 kg of magnesium chloride, 50 kg of water, 1 L of plant-based foam board, 20 kg of sawdust, 0.5 kg of magnesia modifier, 0.8 kg of waterproofing agent, 1 kg of rare earth, and 0.5 kg of titanium dioxide; wherein the magnesium oxide is 200 mesh, the magnesium chloride can be in the form of halogen flakes, the sawdust is 20-100 mesh, the rare earth is 200 mesh, and the titanium dioxide is 400 mesh.

[0104] Its production process:

[0105] ① Magnesium chloride is mixed with water to obtain a brine solution with a Baume degree of 23 degrees;

[0106] ② Stir and mix magnesium oxide and brine, then add magnesia modifier, waterproofing agent and sawdust to form a uniform slurry;

[0107] ③ Use equipment to make plant-based foamed particles into plant-based foamed boards in advance for later use;

[0108] ④ Mix rare earth and titanium dioxide separately and spray them on the outermost layer of the plate when preparing for production;

[0109] ⑤ Take the plant-based foam board as the core layer, first spread a layer of slurry on the surface of the foam board, then spread a layer of glass fiber cloth (mesh cloth), spread another layer of slurry after extracting the slurry, then wrap it with a layer of glass fiber cloth, and then spread a layer of slurry, and finally spray the pre-mixed rare earth and titanium dioxide as the surface layer on the slurry, solidify and shape, and obtain a coated antibacterial and fireproof composite ecological board.

[0110] Composite ecological board performance evaluation:

[0111]

[0112] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An antibacterial and fireproof composite ecological board, characterized in that: It comprises a substrate layer and an antibacterial coating coated on the surface of the substrate layer; The substrate layer is made by solidifying a substrate layer raw material, wherein the substrate layer raw material includes an inorganic gelling material, and the inorganic gelling material is a magnesium gelling material or a silicate cement gelling material.

2. The composite ecological board according to claim 1, characterized in that: The magnesium gelling material is magnesium oxychloride gelling material, magnesium oxysulfide gelling material or magnesium phosphate gelling material.

3. The composite ecological board according to claim 2, characterized in that: The raw material components of the magnesium oxychloride gelling material include light-burned magnesium oxide, magnesium chloride, a magnesia modifier, a waterproofing agent, an auxiliary filling material and water; the auxiliary filling material includes sawdust.

4. The composite ecological board according to claim 2, characterized in that: The raw material components of the magnesium oxysulfide gelling material include light-burned magnesium oxide, magnesium sulfate, a magnesium oxysulfide modifier, a waterproofing agent, auxiliary materials and water; the auxiliary materials include a foaming agent.

5. The composite ecological board according to claim 1, characterized in that: The raw material components of the silicate cement gelling material include cement, silica fume, reinforcing admixture, waterproofing agent, blending agent and water.

6. The composite ecological board according to claim 1, characterized in that: The substrate layer raw material also includes an organic adhesive, and the organic adhesive includes one or more of latex powder, cellulose, rice, glutinous rice, egg white, starch and maltodextrin.

7. The composite ecological board according to claim 1, characterized in that: The substrate layer raw material also includes plant-based foaming material, and the plant-based foaming material is embedded in the substrate layer in the form of particles or plates.

8. The composite ecological board according to claim 7, characterized in that: The plant-based foaming material contains inorganic refractory materials, and the inorganic refractory materials include one or more of magnesium oxide, rare earth, titanium dioxide, medical stone, zeolite, perlite, graphite, silica fume and light calcium.

9. The composite ecological board according to claim 1, characterized in that: The components of the antibacterial coating include one or more of silver, rare earth, titanium dioxide and magnesium oxide.

10. A method for preparing the antibacterial and fireproof composite ecological board according to any one of claims 1 to 9, characterized in that: The process includes: A substrate layer is prepared, and an antibacterial coating is coated on the surface of the substrate layer to obtain an antibacterial and fireproof composite ecological board.

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