Antibacterial formaldehyde-absorbing and carbon-fixing indoor board and preparation method thereof

Abstract

The present invention provides an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material, which is prepared from raw materials including the following components: 30 to 50 parts by weight of cementitious material; 10 to 30 parts by weight of industrial waste residue; 5 to 10 parts by weight of calcium oxide; 5 to 10 parts by weight of fly ash; 5 to 20 parts by weight of sepiolite powder; 1 to 10 parts by weight of mugwort leaves; and 5 to 10 parts by weight of water. Compared with the prior art, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material provided by the present invention uses specific components at specific contents to achieve better overall interaction. The resulting antibacterial formaldehyde-absorbing and carbon-fixing indoor board material not only meets the strength requirements of use, but can also seal a large amount of carbon dioxide. At the same time, solid waste materials and mugwort leaves are added to the product raw materials, which can achieve secondary utilization of resources and also make the board material have antibacterial effects, which is in line with the direction of sustainable development.

Description

Technical Field

[0001] The present invention relates to the technical field of green building materials, and more particularly to an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material and a preparation method thereof. Background Art

[0002] Against the backdrop of global warming, most industrial activities release carbon dioxide. Excessive carbon dioxide emissions have become a burden on the planet and an obstacle to sustainable development. Energy conservation and emission reduction have long been a national and societal priority, with various industries accelerating their development towards green and low-carbon development.

[0003] More than 90% of modern people's social activities take place indoors. The stimulation of indoor aldehyde pollutants and the harm of various bacteria to human health will have a huge impact on human health over time. Therefore, the demand for multifunctional indoor panels is increasing.

[0004] At present, the panels that occupy most of the building materials market have single functions and can no longer meet people's growing material needs. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material and a preparation method thereof. The antibacterial formaldehyde-absorbing and carbon-fixing indoor board material provided by the present invention has strength that meets the use requirements and can seal a large amount of carbon dioxide. At the same time, solid waste materials and mugwort leaves are added to the product raw materials, which can realize the secondary utilization of resources and also make the board material have antibacterial effect, which is in line with the direction of sustainable development.

[0006] The present invention provides an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material, which is prepared from raw materials including the following components:

[0007] 30 to 50 parts by weight of gelling material;

[0008] 10 to 30 parts by weight of industrial waste residue;

[0009] 5 to 10 parts by weight of calcium oxide;

[0010] 5 to 10 parts by weight of fly ash;

[0011] 5 to 20 parts by weight of sepiolite powder;

[0012] 1 to 10 parts by weight of Artemisia argyi leaves;

[0013] 5 to 10 parts by weight of water.

[0014] Preferably, the gelling material is selected from one or more of monocalcium silicate, dicalcium silicate, γ-type dicalcium silicate, β-type dicalcium silicate and tricalcium disilicate;

[0015] The fineness of the gelling material is 150-250 meshes.

[0016] Preferably, the industrial waste slag is selected from one or more of steel slag, carbide slag, furnace slag and water slag;

[0017] The discharge particle size of the industrial waste slag is 0.07mm to 0.80mm.

[0018] Preferably, the fineness of the calcium oxide is 250-300 mesh.

[0019] Preferably, the fly ash satisfies the condition that the residue on a 40 μm to 45 μm square hole sieve is no more than 25%.

[0020] Preferably, the sepiolite powder has a size of 300-325 mesh.

[0021] The present invention also provides a method for preparing the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material described in the above technical solution, comprising the following steps:

[0022] a) mixing a cementitious material, industrial waste residue, calcium oxide, fly ash, sepiolite powder and mugwort leaves to prepare a dry material; then adding water to the dry material to prepare a wet material; and then pressing the wet material to obtain a sheet;

[0023] b) carbonizing the plate prepared in step a) to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor plate.

[0024] Preferably, the mixing method for preparing the dry material in step a) is stirring, and the stirring time is 5 minutes to 15 minutes;

[0025] The mixing method for preparing the wet material is stirring, and the stirring time is 5 minutes to 15 minutes.

[0026] Preferably, the pressure of the compression molding in step a) is 20 MPa to 50 MPa.

[0027] Preferably, the carbonization conditions in step b) are: the concentration of carbon dioxide used is 30% to 100%, the carbonization time is 5 hours to 10 hours, the carbonization pressure is 0.1 MPa to 1.5 MPa, and the carbonization temperature is 25° C. to 35° C.

[0028] The present invention provides an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material, which is prepared from raw materials including the following components: 30 to 50 parts by weight of cementitious material; 10 to 30 parts by weight of industrial waste residue; 5 to 10 parts by weight of calcium oxide; 5 to 10 parts by weight of fly ash; 5 to 20 parts by weight of sepiolite powder; 1 to 10 parts by weight of mugwort leaves; and 5 to 10 parts by weight of water. Compared with the prior art, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material provided by the present invention uses specific components at specific contents to achieve better overall interaction. The resulting antibacterial formaldehyde-absorbing and carbon-fixing indoor board material not only meets the strength requirements of use, but can also seal a large amount of carbon dioxide. At the same time, solid waste materials and mugwort leaves are added to the product raw materials, which can achieve secondary utilization of resources and also make the board material have antibacterial effects, which is in line with the direction of sustainable development.

[0029] In addition, the preparation method provided by the present invention has a simple process, mild conditions, and is easy to control, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A bar chart comparing the result data of compressive strength, flexural strength, formaldehyde absorption rate and sterilization rate of the products provided in Examples 1 to 4 and Comparative Examples 1 to 2. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0032] The present invention provides an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material, which is prepared from raw materials including the following components:

[0033] 30 to 50 parts by weight of gelling material;

[0034] 10 to 30 parts by weight of industrial waste residue;

[0035] 5 to 10 parts by weight of calcium oxide;

[0036] 5 to 10 parts by weight of fly ash;

[0037] 5 to 20 parts by weight of sepiolite powder;

[0038] 1 to 10 parts by weight of Artemisia argyi leaves;

[0039] 5 to 10 parts by weight of water.

[0040] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material is prepared from raw materials including cementitious material, industrial waste residue, calcium oxide, fly ash, sepiolite powder, mugwort leaves and water, preferably prepared from cementitious material, industrial waste residue, calcium oxide, fly ash, sepiolite powder, mugwort leaves and water.

[0041] In the present invention, the cementitious material is preferably selected from one or more of monocalcium silicate, dicalcium silicate, gamma-dicalcium silicate, beta-dicalcium silicate, and tricalcium disilicate, with gamma-dicalcium silicate being more preferred. The present invention has no particular limitation on the source of the cementitious material, and commercially available products known to those skilled in the art may be used.

[0042] In the present invention, the fineness of the gelling material is preferably 150-250 mesh, more preferably 200 mesh.

[0043] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material comprises 30 to 50 parts by weight of a gelling material, preferably 50 parts by weight.

[0044] In the present invention, the industrial waste slag is preferably selected from one or more of steel slag, carbide slag, furnace slag, and water slag, and is more preferably steel slag. In a preferred embodiment of the present invention, the steel slag can be electric furnace slag, open-hearth furnace slag, or converter slag, all of which are well known to those skilled in the art, and has a free calcium oxide content of between 1% and 2%. The present invention has no particular limitation on the source of the industrial waste slag.

[0045] In the present invention, the particle size of the industrial waste slag is preferably 0.07 mm to 0.80 mm, more preferably 0.07 mm to 0.075 mm.

[0046] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material comprises 10 to 30 parts by weight of industrial waste residue, preferably 10 parts by weight.

[0047] In the present invention, the fineness of the calcium oxide is preferably 250-300 mesh, more preferably 300 mesh. The present invention has no particular limitation on the source of the calcium oxide, and commercially available products known to those skilled in the art can be used.

[0048] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material comprises 5 to 10 parts by weight of calcium oxide.

[0049] In the present invention, the fly ash preferably satisfies the condition that the residue on a 40-45 μm square mesh sieve is no more than 25%, and more preferably satisfies the condition that the residue on a 45 μm square mesh sieve is no more than 25%. The present invention has no particular limitation on the source of the fly ash, and commercially available products known to those skilled in the art can be used.

[0050] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material comprises 5 to 10 parts by weight of fly ash.

[0051] In the present invention, the sepiolite powder is preferably 300-325 mesh, more preferably 300-320 mesh. The present invention has no particular limitation on the source of the sepiolite powder, and commercially available products known to those skilled in the art can be used.

[0052] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material comprises 5 to 20 parts by weight of sepiolite powder, preferably 10 to 20 parts by weight.

[0053] The present invention has no particular limitation on the source of the Artemisia argyi leaves, and commercially available products known to those skilled in the art can be used.

[0054] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material comprises 1 to 10 parts by weight of Artemisia argyi leaves, preferably 10 parts by weight.

[0055] In the present invention, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material comprises 5 to 10 parts by weight of water, preferably 5 parts by weight.

[0056] The antibacterial formaldehyde-absorbing and carbon-fixing indoor board material provided by the present invention adopts specific components in specific contents to achieve better overall interaction. The obtained antibacterial formaldehyde-absorbing and carbon-fixing indoor board material has the characteristics of high antibacterial and high flexural and compressive strength. At the same time, the raw materials of the board material prepared by the present invention adopt solid waste, and a large amount of carbon dioxide can be absorbed during the preparation process, which is in line with the green and sustainable development environment under the national background.

[0057] The present invention also provides a method for preparing the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material described in the above technical solution, comprising the following steps:

[0058] a) mixing a cementitious material, industrial waste residue, calcium oxide, fly ash, sepiolite powder and mugwort leaves to prepare a dry material; then adding water to the dry material to prepare a wet material; and then pressing the wet material to obtain a sheet;

[0059] b) carbonizing the plate prepared in step a) to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor plate.

[0060] The invention first mixes gelling material, industrial waste residue, calcium oxide, fly ash, sepiolite powder and mugwort leaves to prepare dry material; then adds water to the dry material to prepare wet material; and then presses the wet material to obtain a plate.

[0061] In the present invention, the gelling material, industrial waste residue, calcium oxide, fly ash, sepiolite powder, mugwort leaves and water are the same as those in the above technical solution, and are not described in detail here.

[0062] In the present invention, the mixing method for preparing the dry material is preferably stirring, and the stirring time is preferably 5 minutes to 15 minutes, more preferably 10 minutes.

[0063] In the present invention, the mixing method for preparing the wet material is preferably stirring, and the stirring time is preferably 5 minutes to 15 minutes, more preferably 10 minutes.

[0064] In the present invention, the pressure of the press molding is preferably 20 MPa to 50 MPa, more preferably 30 MPa.

[0065] After obtaining the plate, the present invention carbonizes the prepared plate to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor plate.

[0066] In the present invention, the carbonization is preferably performed using a carbonization device well known to those skilled in the art, such as a carbonization box.

[0067] In the present invention, the carbonization conditions are preferably: the concentration of carbon dioxide used is 30% to 100%, the carbonization time is 5h to 10h, the carbonization pressure is 0.1MPa to 1.5MPa, and the carbonization temperature is 25°C to 35°C;

[0068] More preferably, the concentration of carbon dioxide used is 30%, the carbonization time is 8 hours, the carbonization pressure is 0.1 MPa, and the carbonization temperature is 25°C.

[0069] In the present invention, the carbonization preferably further comprises:

[0070] After polishing, antibacterial formaldehyde-absorbing and carbon-fixing indoor panels are obtained.

[0071] The preparation method provided by the present invention has simple process, mild conditions, easy control, and broad application prospects.

[0072] The present invention provides an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material and a preparation method thereof, which has the following beneficial effects:

[0073] (1) The plate prepared by the present invention will absorb a large amount of carbon dioxide during the preparation process, which meets the development needs of national policies.

[0074] (2) The raw materials for board preparation contain solid waste, which can realize the resource utilization of solid waste and meet the national sustainable development requirements.

[0075] (3) The addition of mugwort leaves makes the board not only able to stabilize emotions and relax the body and mind when used indoors, but also has a certain antibacterial effect. The antibacterial rate against anthrax bacteria that can cause sepsis in humans is 13%.

[0076] (4) Adding sepiolite powder to the board raw materials can adsorb indoor formaldehyde.

[0077] The present invention provides an antibacterial formaldehyde-absorbing and carbon-fixing indoor board material, which is prepared from raw materials including the following components: 30 to 50 parts by weight of cementitious material; 10 to 30 parts by weight of industrial waste residue; 5 to 10 parts by weight of calcium oxide; 5 to 10 parts by weight of fly ash; 5 to 20 parts by weight of sepiolite powder; 1 to 10 parts by weight of mugwort leaves; and 5 to 10 parts by weight of water. Compared with the prior art, the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material provided by the present invention uses specific components in specific amounts to achieve better overall interaction. The obtained antibacterial formaldehyde-absorbing and carbon-fixing indoor board material not only meets the strength requirements of use, but also can seal a large amount of carbon dioxide during the preparation process. At the same time, solid waste materials and mugwort leaves are added to the product raw materials, which can achieve secondary utilization of resources and also make the board material have antibacterial effect, which is in line with the direction of sustainable development.

[0078] In addition, the preparation method provided by the present invention has a simple process, mild conditions, and is easy to control, and has broad application prospects.

[0079] In order to further illustrate the present invention, the following examples are provided for detailed description. The raw materials used in the following examples and comparative examples of the present invention are all commercially available.

[0080] Example 1

[0081] (1) Raw material formula: It is made from the following components by weight: 50 parts of gamma-type dicalcium silicate, 10 parts of steel slag, 5 parts of calcium oxide, 5 parts of fly ash, 10 parts of sepiolite powder, 10 parts of mugwort leaves, and 5 parts of water.

[0082] Among them, the fineness of the cementitious material is 200 mesh, the fineness of the calcium oxide is 300 mesh, the particle size of the steel slag discharge is 0.07 mm, the fly ash meets the conditions that the residue on the 45μm square hole sieve is no more than 25%, and the sepiolite powder is 300 mesh.

[0083] (2) The preparation method comprises the following steps:

[0084] The cementitious material, steel slag, calcium oxide, fly ash, sepiolite powder and mugwort leaves were stirred for 10 minutes to prepare a dry material; the dry material was then added with water and stirred for 10 minutes to prepare a wet material; and the wet material was then pressed and formed at a pressure of 30 MPa to obtain a board;

[0085] The prepared board is immediately placed in a carbonization box for carbonization. The carbonization conditions are: a carbon dioxide concentration of 30% gas, a carbonization time of 8 hours, a carbonization pressure of 0.1 MPa, and a carbonization temperature of 25°C. After carbonization, it is polished to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor board.

[0086] After testing, the indoor board prepared in this embodiment achieved the following performance: compressive strength of 75.4 MPa, flexural strength of 12.4 MPa, formaldehyde absorption effect of 36% within 2 days, and anthrax resistance rate of 13%.

[0087] Example 2

[0088] (1) Raw material formula: It is made from the following components by weight: 50 parts of gamma-type dicalcium silicate, 10 parts of steel slag, 5 parts of calcium oxide, 5 parts of fly ash, 15 parts of sepiolite powder, 10 parts of mugwort leaves, and 5 parts of water.

[0089] Among them, the fineness of the cementitious material is 200 mesh, the fineness of the calcium oxide is 300 mesh, the particle size of the steel slag discharge is 0.07 mm, the fly ash meets the conditions that the residue on the 45μm square hole sieve is no more than 25%, and the sepiolite powder is 300 mesh.

[0090] (2) The preparation method comprises the following steps:

[0091] The cementitious material, steel slag, calcium oxide, fly ash, sepiolite powder and mugwort leaves were stirred for 10 minutes to prepare a dry material; the dry material was then added with water and stirred for 10 minutes to prepare a wet material; and the wet material was then pressed and formed at a pressure of 30 MPa to obtain a board;

[0092] The prepared board is immediately placed in a carbonization box for carbonization. The carbonization conditions are: a carbon dioxide concentration of 30% gas, a carbonization time of 8 hours, a carbonization pressure of 0.1 MPa, and a carbonization temperature of 25°C. After carbonization, it is polished to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor board.

[0093] After testing, the indoor board prepared in this embodiment achieved the following performance: compressive strength of 82 MPa, flexural strength of 14.8 MPa, formaldehyde absorption effect of 30% within 2 days, and anthrax resistance rate of 12.9%.

[0094] Example 3

[0095] (1) Raw material formula: It is made from the following components by weight: 50 parts of gamma-type dicalcium silicate, 10 parts of steel slag, 10 parts of calcium oxide, 10 parts of fly ash, 10 parts of sepiolite powder, 10 parts of mugwort leaves, and 5 parts of water.

[0096] Among them, the fineness of the cementitious material is 200 mesh, the fineness of calcium oxide is 300 mesh, the particle size of the steel slag is 0.075mm, the fly ash meets the conditions that the residue on the 45μm square hole sieve is no more than 25%, and the sepiolite powder is 320 mesh.

[0097] (2) The preparation method comprises the following steps:

[0098] The cementitious material, steel slag, calcium oxide, fly ash, sepiolite powder and mugwort leaves were stirred for 10 minutes to prepare a dry material; the dry material was then added with water and stirred for 10 minutes to prepare a wet material; and the wet material was then pressed and formed at a pressure of 30 MPa to obtain a board;

[0099] The prepared board is immediately placed in a carbonization box for carbonization. The carbonization conditions are: a carbon dioxide concentration of 30% gas, a carbonization time of 8 hours, a carbonization pressure of 0.1 MPa, and a carbonization temperature of 25°C. After carbonization, it is polished to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor board.

[0100] After testing, the indoor board prepared in this embodiment achieved the following performance: compressive strength of 68.2 MPa, flexural strength of 11.2 MPa, formaldehyde absorption effect of 35% within 2 days, and anthrax resistance rate of 11.8%.

[0101] Example 4

[0102] (1) Raw material formula: It is made from the following components by weight: 50 parts of gamma-type dicalcium silicate, 10 parts of steel slag, 10 parts of calcium oxide, 10 parts of fly ash, 20 parts of sepiolite powder, 10 parts of mugwort leaves, and 5 parts of water.

[0103] Among them, the fineness of the cementitious material is 200 mesh, the fineness of calcium oxide is 300 mesh, the particle size of the steel slag is 0.075mm, the fly ash meets the conditions that the residue on the 45μm square hole sieve is no more than 25%, and the sepiolite powder is 320 mesh.

[0104] (2) The preparation method comprises the following steps:

[0105] The cementitious material, steel slag, calcium oxide, fly ash, sepiolite powder and mugwort leaves were stirred for 10 minutes to prepare a dry material; the dry material was then added with water and stirred for 10 minutes to prepare a wet material; and the wet material was then pressed and formed at a pressure of 30 MPa to obtain a board;

[0106] The prepared board is immediately placed in a carbonization box for carbonization. The carbonization conditions are: a carbon dioxide concentration of 30% gas, a carbonization time of 8 hours, a carbonization pressure of 0.1 MPa, and a carbonization temperature of 25°C. After carbonization, it is polished to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor board.

[0107] After testing, the indoor board prepared in this embodiment achieved the following performance: compressive strength of 78.4 MPa, flexural strength of 13.4 MPa, formaldehyde absorption effect of 20% within 2 days, and anthrax resistance rate of 12.8%.

[0108] Comparative Example 1

[0109] (1) Raw material formula: It is made from the following components by weight: 50 parts of gamma-type dicalcium silicate, 10 parts of steel slag, 5 parts of calcium oxide, 5 parts of fly ash, 10 parts of mugwort leaves, and 5 parts of water.

[0110] Among them, the fineness of the cementitious material is 200 mesh, the fineness of the calcium oxide is 300 mesh, the particle size of the steel slag discharge is 0.075mm, and the fly ash meets the conditions that the residue on the sieve using a 45μm square hole sieve is no more than 25%.

[0111] (2) The preparation method comprises the following steps:

[0112] The cementitious material, steel slag, calcium oxide, fly ash, sepiolite powder and mugwort leaves were stirred for 10 minutes to prepare a dry material; the dry material was then added with water and stirred for 10 minutes to prepare a wet material; and the wet material was then pressed and formed at a pressure of 30 MPa to obtain a board;

[0113] The prepared board is immediately placed in a carbonization box for carbonization. The carbonization conditions are: a carbon dioxide concentration of 30% gas, a carbonization time of 8 hours, a carbonization pressure of 0.1 MPa, and a carbonization temperature of 25°C. After carbonization, it is polished to obtain an indoor board.

[0114] After testing, the indoor board prepared in this comparative example achieved the following performance: compressive strength 70.4 MPa, flexural strength 11.5 MPa, formaldehyde absorption effect within 2 days of 2%, and anthrax resistance rate of 12.8%.

[0115] Comparative Example 2

[0116] (1) Raw material formula: It is made from the following components by weight: 50 parts of gamma-type dicalcium silicate, 10 parts of steel slag, 5 parts of calcium oxide, 5 parts of fly ash, 15 parts of sepiolite powder, and 5 parts of water.

[0117] Among them, the fineness of the cementitious material is 200 mesh, the fineness of calcium oxide is 300 mesh, the particle size of the steel slag is 0.075mm, the fly ash meets the conditions that the residue on the 45μm square hole sieve is no more than 25%, and the sepiolite powder is 320 mesh.

[0118] (2) The preparation method comprises the following steps:

[0119] The cementitious material, steel slag, calcium oxide, fly ash, sepiolite powder and mugwort leaves were stirred for 10 minutes to prepare a dry material; the dry material was then added with water and stirred for 10 minutes to prepare a wet material; and the wet material was then pressed and formed at a pressure of 30 MPa to obtain a board;

[0120] The prepared board is immediately placed in a carbonization box for carbonization. The carbonization conditions are: a carbon dioxide concentration of 30% gas, a carbonization time of 8 hours, a carbonization pressure of 0.1 MPa, and a carbonization temperature of 25°C. After carbonization, it is polished to obtain an indoor board.

[0121] According to the test, the indoor board prepared in this comparative example achieved the following performances: compressive strength of 81.4 MPa, flexural strength of 14.5 MPa, formaldehyde absorption effect of 29.7% within 2 days, and anti-anthrax Bacillus rate of 0%.

[0122] The results of the product compressive strength, flexural strength, formaldehyde absorption rate and sterilization rate provided in Examples 1 to 4 and Comparative Examples 1 to 2 are compared in the bar chart. Figure 1 shown.

[0123] From the above embodiments and comparative examples, it can be seen that the indoor board material provided according to the present invention has high compressive and flexural strength and has formaldehyde-absorbing and antibacterial effects. The addition of sepiolite will increase the carbonization degree of the cementitious material, and the final effect is the enhancement of compressive strength. The addition of too much sepiolite will have a negative effect on the carbonization strength. The addition of an appropriate amount of calcium oxide is beneficial to improving the compressive strength of the board material. Moreover, based on the above embodiments, the addition of mugwort leaves will not affect the carbonization strength, and the floating range can be ignored within the error range. In addition, increasing the content of mugwort leaves will improve the antibacterial effect of the board material.

[0124] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. An antibacterial formaldehyde-absorbing and carbon-fixing indoor board material, characterized in that: Prepared from the following raw materials: 30 to 50 parts by weight of gelling material; 10 to 30 parts by weight of industrial waste residue; 5 to 10 parts by weight of calcium oxide; 5 to 10 parts by weight of fly ash; 5 to 20 parts by weight of sepiolite powder; 1 to 10 parts by weight of Artemisia argyi leaves; 5 to 10 parts by weight of water; The industrial waste slag is selected from steel slag; The discharge particle size of the industrial waste slag is 0.07mm to 0.075mm; The fly ash meets the condition that the residue on a 45 μm square hole sieve is no more than 25%; The gelling material is selected from gamma-type dicalcium silicate; The sepiolite powder has a size of 300-325 meshes.

2. The antibacterial formaldehyde-absorbing and carbon-fixing indoor board material according to claim 1, characterized in that: The fineness of the gelling material is 150-250 meshes.

3. The antibacterial formaldehyde-absorbing and carbon-fixing indoor board material according to claim 1, characterized in that: The fineness of the calcium oxide is 250-300 meshes.

4. A method for preparing the antibacterial formaldehyde-absorbing and carbon-fixing indoor board material according to any one of claims 1 to 3, characterized in that: The following steps are involved: a) mixing a cementitious material, industrial waste residue, calcium oxide, fly ash, sepiolite powder and mugwort leaves to prepare a dry material; then adding water to the dry material to prepare a wet material; and then pressing the wet material to obtain a sheet; b) carbonizing the plate prepared in step a) to obtain an antibacterial formaldehyde-absorbing and carbon-fixing indoor plate.

5. The preparation method according to claim 4, characterized in that The mixing method for preparing the dry material in step a) is stirring, and the stirring time is 5 minutes to 15 minutes; The mixing method for preparing the wet material is stirring, and the stirring time is 5 minutes to 15 minutes.

6. The preparation method according to claim 4, characterized in that The pressure of the compression molding in step a) is 20 MPa to 50 MPa.

7. The preparation method according to claim 4, characterized in that The carbonization conditions in step b) are as follows: the concentration of carbon dioxide used is 30% to 100%, the carbonization time is 5h to 10h, the carbonization pressure is 0.1MPa to 1.5MPa, and the carbonization temperature is 25°C to 35°C.

Images