A wood and stone material

Abstract

The present invention provides a wood-stone material, relating to the technical field of wood-stone materials. The wood-stone material comprises stone powder and wood powder, and also comprises the following components in parts by weight: 15 to 25 parts of a flame retardant and 2 to 2.5 parts of a foaming agent; the flame retardant comprises a shell layer and a core layer, the shell layer mainly comprising an organic flame retardant and a degradable resin, and the core layer mainly comprising an aerosol fire extinguishing agent; the preparation method comprises the following steps: S1. preparing raw materials; S2. mixing and batching; S3. extrusion; S4. molding and cooling; S5. cutting and trimming; and S6. testing. The flame retardant shell layer and core layer of the present invention are each made of different flame retardant / fire extinguishing ingredients, which not only provides excellent fireproofing and flame retardancy in daily use, but also provides varying degrees of fireproofing and fire extinguishing effects at different stages of a fire. The flame retardant applied to the wood-stone material can effectively improve the fireproofing and flame retardancy of the wood-stone material.

Description

[0001] This application is a divisional application of the invention application with an application date of June 6, 2024, Chinese application number 202410727210.4, and invention name “Fire-retardant wood and stone materials and their preparation method”. Technical Field

[0002] The present invention relates to the technical field of wood and stone materials, and in particular to a wood and stone material. Background Art

[0003] Wood-stone materials are composite materials made from stone powder (usually calcium carbonate) and wood fiber / wood powder, supplemented with polymers such as polyvinyl chloride (PVC), and processing aids. Stone powder accounts for the largest proportion of the raw material system, resulting in a natural, environmentally friendly, formaldehyde-free material with excellent moisture resistance and strong impact resistance.

[0004] Since wood and stone materials have the above-mentioned excellent properties, they can be used to make door panels or door frames. When wood and stone materials are used in the home field, such as as raw materials for door panels or door frames, there are high requirements for their fire retardant properties, so that they can reduce the possibility of fire in daily use and when a fire accident unfortunately occurs, they can maximize fire retardancy and even play a certain fire extinguishing role.

[0005] The existing technology usually directly adds flame retardant additives to the wood and stone material system to improve its fire retardant properties. The flame retardant additives are usually inorganic additives such as magnesium hydroxide or aluminum hydroxide. However, in actual production and use, the addition of the above additives has limited effect on improving the flame retardancy of wood and stone materials. Therefore, a wood and stone material with better fire retardancy is needed to improve its daily fire safety performance when used in home areas such as door panels or door frames, as well as its flame retardant / fire extinguishing performance in the event of a fire accident. Summary of the Invention

[0006] (1) Technical problems solved

[0007] In view of the shortcomings of the existing technology, the present invention provides a wood and stone material, which solves the technical problems that the existing wood and stone materials have poor fire resistance and flame retardancy in daily use and poor flame retardant and fire extinguishing performance when encountering fire accidents.

[0008] (2) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] The fireproof and flame-retardant wood and stone material includes the following components in parts by weight: 100-120 parts of stone powder, 50-80 parts of wood powder, 30-50 parts of polyvinyl chloride, 15-25 parts of flame retardant, 10-20 parts of calcium powder, 2-2.5 parts of foaming agent, 10-15 parts of foaming regulator, 5-7 parts of stabilizer, 2-5 parts of anti-impact agent, 0.6-1.5 parts of stearic acid and 0.4-0.6 parts of oxidized polyethylene wax; the flame retardant includes a shell layer and a core layer, the main components of the shell layer are organic flame retardant and degradable resin, and the main component of the core layer is an aerosol fire extinguishing agent.

[0011] Preferably, the mass ratio of the shell layer to the core layer is (1-1.5):1.

[0012] Preferably, the mass of the organic flame retardant is 20-30% of the mass of the degradable resin.

[0013] Preferably, the main component of the core layer further includes carbon fiber reinforcement, the aerosol fire extinguishing agent is dispersed in the skeleton of the carbon fiber reinforcement, and the mass ratio of the aerosol fire extinguishing agent to the carbon fiber reinforcement is 1:(2-2.4).

[0014] Preferably, the organic flame retardant is a phosphorus-based flame retardant or a nitrogen-based flame retardant; and the degradable resin is a mixture of one or more of polylactic acid, polyacrylic acid or polybutylene terephthalate adipate.

[0015] Preferably, the foaming agent comprises: 50-65% of sodium lauryl sulfate, 20-35% of sodium polyoxyethylene fatty alcohol ether sulfate, and 10-20% of polyoxyethylene fatty acid ester.

[0016] Preferably, the foaming regulator is any one of ZB-530, K-400, and JINHASS foaming regulators.

[0017] Preferably, the stabilizer is an organotin stabilizer or a calcium zinc stabilizer.

[0018] Preferably, the impact-resistant agent is chlorinated polyethylene or acrylic copolymer.

[0019] The preparation method of the fire-retardant wood-stone material specifically comprises the following steps:

[0020] S1. Raw material preparation: Weigh 100-120 parts of stone powder, 50-80 parts of wood flour, 30-50 parts of polyvinyl chloride, 15-25 parts of flame retardant, 10-20 parts of calcium powder, 2-2.5 parts of foaming agent, 10-15 parts of foaming regulator, 5-7 parts of stabilizer, 2-5 parts of anti-impact agent, 0.6-1.5 parts of stearic acid and 0.4-0.6 parts of oxidized polyethylene wax;

[0021] S2. Mixing and batching: The stone powder, wood flour, polyvinyl chloride, and calcium powder are first mixed, and then the foaming agent and foaming regulator are added and mixed;

[0022] S3 extrusion: The mixture is placed in an extruder, and after the mixture is melted and blended uniformly, a flame retardant, a stabilizer, an impact agent, stearic acid and polyethylene oxide are added, and the mixture is uniformly blended and extruded;

[0023] S4. Molding and cooling: The extruded mixture is cooled and vacuum-set through a mold;

[0024] S5. Cutting and trimming: Cut and trim the molded products according to production requirements;

[0025] S6. Inspection: Carry out quality inspection on the products, check their size, appearance and performance, and produce and put them into storage after they pass the inspection.

[0026] (3) Beneficial effects

[0027] The present invention provides a wood-stone material. Compared with the prior art, it has the following beneficial effects:

[0028] 1. The flame retardant used in the present invention has a shell-core structure. The shell layer and the core layer are respectively selected from different flame retardant / fire extinguishing components. Not only can it play an excellent fire-retardant role in daily use, but it can also play a different degree of fire-retardant and fire-extinguishing role at different stages of a fire. The specific principle of flame retardant and fire extinguishing is as follows: due to the addition of the flame retardant of the present invention, the ignition point of the wood and stone materials is greatly increased, and the organic flame retardant in the shell layer can play an excellent flame retardant effect, thus significantly improving the daily fire resistance. When a fire just starts, the organic flame retardant in the shell layer first plays a flame retardant role. At this stage, the fire may be prevented, or the flame retardant effect of the organic flame retardant may delay the fire, buying more time for rescue of trapped people. When the fire continues to cause the surrounding temperature to rise rapidly, the degradable resin begins to decompose, exposing the aerosol fire extinguishing agent material in the core layer. After absorbing heat, a combustion reaction occurs, releasing effective flame retardant substances and taking effect, further retardant and even extinguishing the fire. Therefore, the application of this flame retardant to wood and stone materials can effectively improve the fire-retardant properties of wood and stone materials.

[0029] 2. The main components of the flame retardant shell structure of the present invention are organic flame retardants and degradable resins. On the one hand, the compatibility between organic substances is better, which can improve the stability of the flame retardant itself. On the other hand, compared with conventional inorganic flame retardants such as magnesium hydroxide and aluminum hydroxide, the flame retardant of the present invention has better dispersibility in wood and stone materials, which can make the performance of the prepared wood and stone materials more stable and the fire retardant time can be extended. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] The embodiments of the present application provide a stone material and a preparation method thereof, thereby solving the problem that existing wood and stone materials have poor fire retardancy in daily use and poor flame retardancy in the event of a fire accident. The prepared wood and stone material has excellent fire retardancy.

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with specific implementation methods.

[0033] The raw materials of the present invention were purchased from cooperative manufacturers.

[0034] Example 1:

[0035] A fireproof and flame-retardant wood-stone material comprising the following components in parts by weight: 100 parts of stone powder, 50 parts of wood powder, 30 parts of polyvinyl chloride, 15 parts of a flame retardant, 10 parts of calcium powder, 2 parts of a foaming agent, 10 parts of a ZB-530 foaming regulator, 5 parts of an organotin stabilizer, 2 parts of chlorinated polyethylene, 0.6 parts of stearic acid, and 0.4 parts of an oxidized polyethylene wax;

[0036] The flame retardant comprises a shell layer and a core layer in a mass ratio of 1:1;

[0037] The main components of the shell are phosphorus flame retardant and polylactic acid, and the mass of the phosphorus flame retardant is 20% of the mass of the polylactic acid;

[0038] The main components of the core layer are aerosol fire extinguishing agent and carbon fiber reinforcement in a mass ratio of 1:2, and the aerosol fire extinguishing agent is dispersed in the skeleton of the carbon fiber reinforcement.

[0039] The foaming agent comprises: 50% of sodium lauryl sulfate, 35% of fatty alcohol polyoxyethylene ether sodium sulfate, and 15% of polyoxyethylene fatty acid ester.

[0040] The preparation method of the fire-retardant wood-stone material specifically comprises the following steps:

[0041] S1. Raw material preparation: Weigh the above raw materials in parts by weight;

[0042] S2 mixing and ingredients: the stone powder, wood flour, polyvinyl chloride, calcium powder first mixed, and then add the foaming agent and ZB-530 foaming regulator and then mix;

[0043] S3 extrusion: The mixture is placed in an extruder, and after the mixture is melted and blended uniformly, a flame retardant, an organotin stabilizer, chlorinated polyethylene, stearic acid and polyethylene oxide are added, and the mixture is uniformly blended and extruded;

[0044] S4. Molding and cooling: The extruded mixture is cooled and vacuum-set through a mold;

[0045] S5. Cutting and trimming: Cut and trim the molded products according to production requirements;

[0046] S6. Inspection: Carry out quality inspection on the products, check their size, appearance and performance, and produce and put them into storage after they pass the inspection.

[0047] Example 2:

[0048] A fireproof and flame-retardant wood-stone material comprising the following components in parts by weight: 110 parts of stone powder, 65 parts of wood powder, 40 parts of polyvinyl chloride, 20 parts of a flame retardant, 15 parts of calcium powder, 2.25 parts of a foaming agent, 12.5 parts of a K-400 foaming regulator, 6 parts of a calcium-zinc stabilizer, 3.5 parts of chlorinated polyethylene, 1.1 parts of stearic acid, and 0.5 parts of an oxidized polyethylene wax;

[0049] The flame retardant comprises a shell layer and a core layer in a mass ratio of 1.25:1;

[0050] The main components of the shell are nitrogen flame retardant and polyacrylic acid, and the mass of the nitrogen flame retardant is 25% of the mass of the polyacrylic acid;

[0051] The main components of the core layer are aerosol fire extinguishing agent and carbon fiber reinforcement with a mass ratio of 1:2.2, and the aerosol fire extinguishing agent is dispersed in the skeleton of the carbon fiber reinforcement.

[0052] The foaming agent comprises: 58% of sodium lauryl sulfate, 26% of fatty alcohol polyoxyethylene ether sodium sulfate, and 16% of polyoxyethylene fatty acid ester.

[0053] The preparation method of the fire-retardant wood-stone material specifically comprises the following steps:

[0054] S1. Raw material preparation: Weigh the above raw materials in parts by weight;

[0055] S2 mixing and ingredients: the stone powder, wood flour, polyvinyl chloride, calcium powder first mixed, and then add the foaming agent and K-400 foaming regulator and then mix;

[0056] S3 extrusion: The mixture is placed in an extruder, and after the mixture is melted and blended uniformly, a flame retardant, a calcium zinc stabilizer, chlorinated polyethylene, stearic acid and polyethylene oxide are added, and the mixture is uniformly blended and extruded;

[0057] S4. Molding and cooling: The extruded mixture is cooled and vacuum-set through a mold;

[0058] S5. Cutting and trimming: Cut and trim the molded products according to production requirements;

[0059] S6. Inspection: Carry out quality inspection on the products, check their size, appearance and performance, and produce and put them into storage after they pass the inspection.

[0060] Example 3

[0061] The fireproof and flame-retardant wood-stone material comprises the following components in parts by weight: 120 parts of stone powder, 80 parts of wood powder, 50 parts of polyvinyl chloride, 25 parts of flame retardant, 20 parts of calcium powder, 5 parts of foaming agent, 15 parts of JINHASS foaming regulator, 7 parts of calcium zinc stabilizer, 5 parts of acrylic copolymer, 1.5 parts of stearic acid and 0.6 parts of oxidized polyethylene wax;

[0062] The flame retardant comprises a shell layer and a core layer in a mass ratio of 1.5:1;

[0063] The main components of the shell are phosphorus flame retardant and polybutylene terephthalate adipate, and the mass of the phosphorus flame retardant is 30% of the mass of the polybutylene terephthalate adipate;

[0064] The main components of the core layer are aerosol fire extinguishing agent and carbon fiber reinforcement with a mass ratio of 1:2.4, and the aerosol fire extinguishing agent is dispersed in the skeleton of the carbon fiber reinforcement.

[0065] The foaming agent comprises: 65% of sodium lauryl sulfate, 20% of fatty alcohol polyoxyethylene ether sodium sulfate, and 15% of polyoxyethylene fatty acid ester.

[0066] The preparation method of the fire-retardant wood-stone material specifically comprises the following steps:

[0067] S1. Raw material preparation: Weigh the above raw materials in parts by weight;

[0068] S2. Mixing and batching: The stone powder, wood flour, polyvinyl chloride, and calcium powder are first mixed, and then the foaming agent and foaming regulator are added and mixed;

[0069] S3 extrusion: The mixture is placed in an extruder, and after the mixture is melted and blended uniformly, a flame retardant, a stabilizer, an impact agent, stearic acid and polyethylene oxide are added, and the mixture is uniformly blended and extruded;

[0070] S4. Molding and cooling: The extruded mixture is cooled and vacuum-set through a mold;

[0071] S5. Cutting and trimming: Cut and trim the molded products according to production requirements;

[0072] S6. Inspection: Carry out quality inspection on the products, check their size, appearance and performance, and produce and put them into storage after they pass the inspection.

[0073] Comparative Example 1 is different from Example 2 in that:

[0074] The flame retardant used is magnesium hydroxide.

[0075] Comparative Example 2 is different from Example 2 in that:

[0076] The flame retardant used is a nitrogen-based flame retardant.

[0077] Comparative Example 3 is different from Example 2 in that:

[0078] The flame retardant used is aerogel fire extinguishing agent.

[0079] Comparative Example 4 is different from Example 2 in that:

[0080] The flame retardant used is a mixture of a nitrogen-based flame retardant and an aerogel fire extinguishing agent in a mass ratio of 1.25:1.

[0081] Comparative Example 5 is different from Example 2 in that:

[0082] When preparing the wood-stone material, the stone powder, wood powder, polyvinyl chloride and calcium powder are first mixed evenly, and then the foaming agent, K-400 foaming regulator, flame retardant, calcium zinc stabilizer, chlorinated polyethylene, stearic acid and oxidized polyethylene are added and mixed again; after the mixture is evenly blended, the mixture is put into the extruder for extrusion.

[0083] Comparative Example 6 differs from Example 2 in that:

[0084] When preparing the wood-stone material, stone powder, wood powder, polyvinyl chloride, calcium powder, foaming agent, K-400 foaming regulator, flame retardant, calcium zinc stabilizer, chlorinated polyethylene, stearic acid and oxidized polyethylene are all added and mixed together; after blending evenly, the mixture is put into an extruder for extrusion.

[0085] Comparative Example 7 is different from Example 2 in that:

[0086] The mass ratio of the shell to the core is 0.8:1.

[0087] Comparative Example 8 is different from Example 2 in that:

[0088] The mass ratio of the shell to the core is 1.7:1.

[0089] Comparative Example 9 is different from Example 2 in that:

[0090] The mass of the nitrogen-based flame retardant is 15% of the mass of the polyacrylic acid.

[0091] Comparative Example 10 differs from Example 2 in that:

[0092] The mass of the nitrogen-based flame retardant is 35% of the mass of the polyacrylic acid.

[0093] Comparative Example 11 is different from Example 2 in that:

[0094] The mass ratio of aerosol fire extinguishing agent to carbon fiber reinforcement is 1:1.7.

[0095] Comparative Example 12 differs from Example 2 in that:

[0096] The mass ratio of aerosol fire extinguishing agent to carbon fiber reinforcement is 1:2.7.

[0097] Comparative Example 13 is different from Example 2 in that:

[0098] Foaming agent includes: 100% sodium lauryl sulfate.

[0099] Comparative Example 14 differs from Example 2 in that:

[0100] The foaming agent includes: 100% sodium fatty alcohol polyoxyethylene ether sulfate.

[0101] Comparative Example 15 differs from Example 2 in that:

[0102] The foaming agent comprises: 58% of sodium lauryl sulfate and 42% of sodium fatty alcohol polyoxyethylene ether sulfate.

[0103] Comparative Example 16 differs from Example 2 in that:

[0104] The sodium lauryl sulfate in the foaming agent was replaced with sodium dodecylbenzenesulfonate.

[0105] Comparative Example 17 differs from Example 2 in that:

[0106] The sodium fatty alcohol polyoxyethylene ether sulfate was replaced with fatty alcohol polyoxyethylene ether phosphate.

[0107] Comparative Example 18 differs from Example 2 in that:

[0108] The foaming agent comprises: 45% of sodium lauryl sulfate, 30% of fatty alcohol polyoxyethylene ether sodium sulfate, and 25% of polyoxyethylene fatty acid ester.

[0109] Comparative Example 19 differs from Example 2 in that:

[0110] The foaming agent comprises: 65% of sodium lauryl sulfate, 15% of fatty alcohol polyoxyethylene ether sodium sulfate, and 20% of polyoxyethylene fatty acid ester.

[0111] Performance testing

[0112] 1. Flame retardant performance test

[0113] The flame retardant properties of the wood and stone materials prepared in Examples 1-3 and Comparative Examples 1-12 were tested and characterized using heat release rate and oxygen index. The test data are recorded in Table 1 below.

[0114] Table 1 - Flame retardant performance test data of Examples 1-3 and Comparative Examples 1-12

[0115]

[0116]

[0117] From the data in Table 1, we can see that:

[0118] (1) It can be seen from the experimental data of Examples 1-3 and Comparative Examples 1-4 that the use of inorganic flame retardants or organic flame retardants alone or the combination of the shell nitrogen-based flame retardant of the present invention and the core aerogel fire extinguishing agent cannot achieve the fire retardant effect that can be achieved by the flame retardant prepared into a core-shell double-layer structure of the present invention;

[0119] (2) The experimental data of Examples 1-3 and Comparative Examples 5-6 show that in the process of preparing wood and stone materials, the order of adding raw materials and the blending method will affect the fire retardant properties of the product. The addition order of the present invention is more conducive to producing products with higher flame retardancy.

[0120] (3) The experimental data of Examples 1-3 and Comparative Examples 7-8 show that the mass ratio of the core layer to the shell layer affects the flame retardant effect of the flame retardant. Therefore, the mass ratio of the two layers should be controlled within a reasonable range to obtain a flame retardant with better flame retardant performance, thereby preparing a wood-stone material with better flame retardant performance.

[0121] (4) From the experimental data of Examples 1-3 and Comparative Examples 9-10, it can be seen that the addition ratio of the main components of the shell layer, nitrogen-based flame retardant, to polyacrylic acid will affect the flame retardant effect of the flame retardant. The possible reason is that if the polyacrylic acid is added too much, it will affect its decomposition rate, thereby affecting the exposure rate of the core layer. If the nitrogen-based flame retardant is added too little, it will also affect the flame retardant effect when the fire just occurs. If the polyacrylic acid is added too little, the core layer will be exposed too quickly, which will also affect the flame retardant stability and long-lasting flame retardancy of the flame retardant.

[0122] (5) It can be seen from the experimental data of Examples 1-3 and Comparative Examples 11-12 that the addition ratio of the aerosol fire extinguishing agent, the main component of the core layer, to the carbon fiber reinforcement will affect the flame retardant effect of the flame retardant. The possible reason is that excessive addition of the aerosol fire extinguishing agent will affect the flame retardant performance, while too little addition will lead to insufficient flame retardant effect. Therefore, it is necessary to control the mass ratio of the aerosol fire extinguishing agent to the carbon fiber reinforcement within an appropriate range.

[0123] 2. Mechanical properties testing

[0124] The wood-stone materials prepared in Examples 1-3 and Comparative Examples 13-19 were subjected to mechanical property testing, characterized by tensile strength and impact strength, and the test data are recorded in Table 2 below.

[0125] Table 2 - Mechanical properties test data of Examples 1-3 and Comparative Examples 13-19

[0126] Sample Tensile strength (MPa) <![CDATA[Impact strength (kJ / m 2 )]]> Example 1 45.3 19.5 Example 2 46.5 21.8 Example 3 44.8 20.2 Comparative Example 13 34.5 13.4 Comparative Example 14 32.9 13.0 Comparative Example 15 37.4 15.1 Comparative Example 16 36.7 14.0 Comparative Example 17 38.4 16.3 Comparative Example 18 41.8 17.4 Comparative Example 19 42.1 17.9

[0127] From the data in Table 2, we can see that:

[0128] (1) The experimental data of Examples 1-3 and Comparative Examples 13-17 show that the components of the foaming agent used in the present invention have a synergistic effect. Randomly replacing or using any one of the components alone cannot achieve the technical effect that can be achieved by the composite foaming agent of the present invention, that is, improving the compatibility and dispersion uniformity between the raw materials, thereby improving the mechanical properties of the prepared wood and stone materials;

[0129] (2) From the experimental data of Examples 1-3 and Comparative Examples 18-19, it can be seen that the addition amount of each component of the foaming agent used in the present invention needs to be controlled within a reasonable range to maximize the role of the foaming agent and achieve the enhancement effect.

[0130] In summary, compared with the existing technology, the present invention has the following beneficial effects:

[0131] 1. The flame retardant used in the present invention has a shell-core structure. The shell and core layers are respectively selected from different flame retardant / fire extinguishing components. It can not only play an excellent fire-retardant role in daily use, but also play a different degree of fire-retardant and fire-extinguishing role at different stages of a fire. The specific principle of fire extinguishing is as follows: due to the addition of the flame retardant of the present invention, the ignition point of the wood and stone materials is greatly increased, and the organic flame retardant in the shell layer can play an excellent flame retardant effect, thus significantly improving the daily fire protection performance; when the fire just starts, the organic flame retardant in the shell layer first plays a flame retardant role. At this stage, the fire may be prevented, or the flame retardant effect of the organic flame retardant may delay the fire, buying more rescue time for trapped people; when the fire continues to occur and the surrounding temperature rises rapidly, the degradable resin begins to decompose, exposing the aerosol fire extinguishing agent material in the core layer, and after absorbing heat, a combustion reaction occurs to release effective flame retardant substances and take effect, further retardant or even extinguish the fire. Therefore, the application of this flame retardant to wood and stone materials can effectively improve the fire-retardant properties of wood and stone materials.

[0132] 2. The main components of the flame retardant shell structure of the present invention are organic flame retardants and degradable resins. On the one hand, the compatibility between organic substances is better, which can improve the stability of the flame retardant itself. On the other hand, compared with conventional inorganic flame retardants such as magnesium hydroxide and aluminum hydroxide, the flame retardant of the present invention has better dispersibility in wood and stone materials, which can make the performance of the prepared wood and stone materials more stable and the fire retardant time can be extended.

[0133] 3. The mass ratio between the core layer and the shell layer, the mass ratio between the main components of the core layer, and the mass ratio between the main components of the shell layer of the present invention must be controlled within a reasonable range to fully exert the flame retardant properties of the flame retardant, thereby ensuring that the flame retardant properties of the wood and stone materials are effectively improved.

[0134] 4. The foaming agent components of the present invention have a synergistic effect, which can improve the compatibility of the wood-stone material system and the dispersion uniformity between the raw materials, thereby improving the strength and other mechanical properties of the prepared products.

[0135] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0136] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A wood and stone material, characterized in that: The invention comprises 100-120 parts of stone powder, 50-80 parts of wood powder, 30-50 parts of polyvinyl chloride, 15-25 parts of flame retardant, 10-20 parts of calcium powder, 2-2.5 parts of foaming agent, 10-15 parts of foaming regulator, 5-7 parts of stabilizer, 2-5 parts of anti-impact agent, 0.6-1.5 parts of stearic acid and 0.4-0.6 parts of oxidized polyethylene wax; the flame retardant comprises a shell layer and a core layer, the main components of the shell layer are organic flame retardant and degradable resin, and the main component of the core layer is aerosol fire extinguishing agent; the mass ratio of the shell layer to the core layer is (1-1.5):1; the mass of the organic flame retardant is 20-30% of the mass of the degradable resin; the organic flame retardant is a phosphorus-based flame retardant or a nitrogen-based flame retardant; The degradable resin is a mixture of one or more of polylactic acid, polyacrylic acid or polybutylene terephthalate adipate; the foaming agent includes: 50-65% of sodium lauryl sulfate, 20-35% of fatty alcohol polyoxyethylene ether sodium sulfate, and 10-20% of polyoxyethylene fatty acid ester; the main component of the core layer also includes carbon fiber reinforcement, the aerosol fire extinguishing agent is dispersed in the skeleton of the carbon fiber reinforcement, and the mass ratio of the aerosol fire extinguishing agent to the carbon fiber reinforcement is 1:(2-2.4); the foaming regulator is any one of ZB-530, K-400, and JINHASS foaming regulator.

2. The wood-stone material according to claim 1, characterized in that: The stabilizer is an organic tin stabilizer or a calcium zinc stabilizer.

3. The wood-stone material according to claim 1, characterized in that: The anti-impact agent is chlorinated polyethylene or acrylic copolymer.

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