Antiskid water-resistant plastic-wood floor material and its preparation method

Abstract

The application relates to the field of floor materials, in particular to a slip-resistant water-resistant plastic-wood floor material and a preparation method thereof. The slip-resistant water-resistant plastic-wood floor material comprises a core layer and a surface layer structure, and the core layer raw material comprises high-density polyethylene, wood fiber, a compatilizer, a coupling agent, solid fillers and a combined reinforcing agent. The plastic-wood floor material prepared by the application has excellent slip-resistant durability in actual application, the surface texture can still maintain good slip-resistant effect after long-term tread friction, is not easy to embed dirt and is convenient to clean; the water-resistant and anti-permeability performance is prominent, water absorption expansion, mold degradation and interlayer peeling do not occur under temperature and humidity alternation and long-term humid environment; the size stability is obviously improved, the expansion and deformation are small under the working conditions of large temperature difference or direct sunlight, and warping is not easy to occur; meanwhile, the foot feeling is comfortable, the environmental adaptability is strong, and the slip-resistant, water-resistant and structure-stable plastic-wood floor material is suitable for indoor and outdoor humid places with high requirements on slip resistance, water resistance and structure stability.

Description

Technical Field

[0001] This application relates to the field of flooring materials, and in particular to a non-slip, water-resistant plastic wood flooring material and its preparation method. Background Technology

[0002] In areas frequently exposed to water, such as kitchens, bathrooms, balconies, and around swimming pools, the anti-slip and water-resistant properties of flooring materials are crucial. Traditional flooring methods, while waterproof, result in slippery surfaces after contact with water, posing significant safety hazards. Furthermore, their hard texture and cold feel make them uncomfortable to walk on. Solid wood flooring offers a natural feel, but its high hydrophilicity makes it prone to moisture absorption, swelling, warping, and even mold and rot. Even with preservative treatments, it's difficult to completely resist water erosion, and its smooth surface provides insufficient slip resistance. Engineered wood flooring, still based on wood fibers, has a high rate of water expansion, limiting its long-term water resistance reliability. To overcome these shortcomings, wood-plastic composites, combining the waterproof properties of plastics with the natural texture of wood, are increasingly being used in these applications.

[0003] Wood-plastic composite (WPC) flooring is primarily made from recycled plastics and wood fibers through high-temperature compounding and extrusion. The hydrophobic plastic matrix encapsulates the wood fibers, blocking direct contact between moisture and the fibers from a material system perspective. Some high-end products also utilize co-extrusion technology to form a dense polymer protective layer on the surface, further isolating moisture penetration. Regarding anti-slip design, existing technologies mainly construct surface textures through physical shaping, such as using embossing rollers to create deep wood-like textures, regular grooves, stripes, or densely packed anti-slip protrusions, thereby increasing surface roughness and the coefficient of friction. Additionally, some technologies add hard fillers such as quartz sand and ceramic particles to the surface coating to form an anti-slip granular layer. These measures, to a certain extent, meet the needs of use in humid environments, leading to the widespread adoption of anti-slip and water-resistant WPC flooring in semi-outdoor areas such as courtyards, boardwalks, and terraces.

[0004] However, existing anti-slip and water-resistant wood-plastic composite (WPC) flooring still has many shortcomings in long-term use. These shortcomings are mainly reflected in insufficient anti-slip durability. The surface embossing and grooves wear down and become dull under long-term foot traffic and wind and sand erosion, and the anti-slip performance decreases significantly over time. Moreover, deeper grooves are prone to trapping dirt and growing moss, forming a slippery layer when wet, making cleaning difficult. Long-term water resistance reliability is also flawed. Under temperature and humidity changes or thermal cycles, the slight expansion and contraction difference at the interface between the plastic matrix and wood powder can create microcracks. Moisture can penetrate along these microchannels, causing internal fiber mold growth and degradation, leading to a decrease in mechanical strength and dimensional changes. Furthermore, it is difficult to balance anti-slip function with user experience. The added anti-slip particles have insufficient interfacial bonding and are prone to detachment, resulting in a rapid loss of anti-slip effect and affecting flatness. Therefore, there is an urgent need to develop a new type of WPC flooring material with more durable anti-slip performance, more reliable water resistance and impermeability, higher dimensional stability, strong environmental adaptability, and structural stability. Summary of the Invention

[0005] To address the aforementioned issues, the applicant has provided the following technical solutions:

[0006] A non-slip and water-resistant wood-plastic flooring material, comprising a core layer and a surface layer structure.

[0007] In a preferred embodiment, the thickness of the core layer is 18~24mm.

[0008] In a preferred embodiment, the thickness of the core layer is 20~22mm.

[0009] In a preferred embodiment, the thickness of the surface layer is 1~2mm.

[0010] In a preferred embodiment, the thickness of the surface layer is 1~1.5mm.

[0011] In a preferred embodiment, the core layer raw material comprises, by weight, 30-42 parts high-density polyethylene, 50-65 parts wood fiber, 5-8 parts compatibilizer, 1-3 parts coupling agent, 1-2 parts lubricant, 0.2-0.3 parts antioxidant, 0.2-0.4 parts light stabilizer, 15-25 parts solid filler, and 4.5-9 parts combined reinforcing agent.

[0012] In a preferred embodiment, the high-density polyethylene is DMDA-8008, manufactured by PetroChina Dushanzi Petrochemical.

[0013] In a preferred embodiment, the mass ratio of the high-density polyethylene, solid filler, and combined reinforcing agent is (3.5~4):(1.8~2.2):(0.5~0.8).

[0014] In a preferred embodiment, the mass ratio of the high-density polyethylene, solid filler, and combined reinforcing agent is (3.8~4):(1.8~2):(0.6~0.8).

[0015] In a preferred embodiment, the wood fiber powder is at least one of poplar wood fiber powder, rice husk powder, bamboo powder, and peanut shell powder.

[0016] In a preferred embodiment, the wood fiber powder is poplar wood fiber powder or rice husk powder.

[0017] In a preferred embodiment, the wood fiber powder is poplar wood fiber powder.

[0018] In a preferred embodiment, the average mesh size of the poplar fiber powder is 100-400 mesh.

[0019] In a preferred embodiment, the average mesh size of the poplar fiber powder is 100-200 mesh.

[0020] In a preferred embodiment, the compatibilizer is polyethylene grafted with maleic anhydride or POE grafted with maleic anhydride.

[0021] In a preferred embodiment, the compatibilizer is polyethylene grafted with maleic anhydride.

[0022] In a preferred embodiment, the coupling agent is at least one selected from γ-aminopropyltriethoxysilane, vinyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-(2,3-epoxypropoxy)propyltrimethoxysilane, and vinyltris(2-methoxyethoxy)silane.

[0023] In a preferred embodiment, the coupling agent is γ-aminopropyltriethoxysilane or γ-methacryloyloxypropyltrimethoxysilane.

[0024] In a preferred embodiment, the coupling agent is γ-aminopropyltriethoxysilane.

[0025] In a preferred embodiment, the lubricant is at least one selected from ethylene bis-stearamide, oxidized polyethylene wax, pentaerythritol tetrastearate, and zinc stearate.

[0026] In a preferred embodiment, the lubricant is ethylene bis-stearamide or oxidized polyethylene wax.

[0027] In a preferred embodiment, the lubricant is ethylene bis-stearamide.

[0028] In a preferred embodiment, the antioxidant is at least one of antioxidant 1010, antioxidant 1076, antioxidant 168, and antioxidant 246.

[0029] In a preferred embodiment, the antioxidant is a combination of antioxidant 1010 and antioxidant 1076.

[0030] In a preferred embodiment, the mass ratio of antioxidant 1010 to antioxidant 1076 is (2~4):(0.5~1).

[0031] In a preferred embodiment, the mass ratio of antioxidant 1010 to antioxidant 1076 is (2~3):(0.7~0.9).

[0032] In a preferred embodiment, the light stabilizer is at least one of UV-326, UV-327, UV-320, and UV-770.

[0033] In a preferred embodiment, the light stabilizer is UV-326 or UV-320.

[0034] In a preferred embodiment, the light stabilizer is UV-326.

[0035] In a preferred embodiment, the solid filler is a combination of short-cut basalt fibers, wollastonite powder, and active magnesium oxide.

[0036] In a preferred embodiment, the mass ratio of the short-cut basalt fiber, wollastonite powder, active magnesium oxide and ultrafine calcium carbonate is (3~5):(5~8):(3~4):(4~6).

[0037] In a preferred embodiment, the mass ratio of the short-cut basalt fiber, wollastonite powder, active magnesium oxide, and ultrafine calcium carbonate is (3~4):(6~7):(3~3.5):(5~5.5).

[0038] In a preferred embodiment, the average length of the chopped basalt fibers is 3-6 mm and the average diameter is 10-15 μm.

[0039] In a preferred embodiment, the average length of the chopped basalt fibers is 3-5 mm and the average diameter is 11-13 μm.

[0040] In a preferred embodiment, the average particle size of the wollastonite powder is 1~3μm.

[0041] In a preferred embodiment, the average particle size of the wollastonite powder is 1~2μm.

[0042] In a preferred embodiment, the specific surface area of ​​the active magnesium oxide is 60~70 m² / g.

[0043] In a preferred embodiment, the specific surface area of ​​the active magnesium oxide is 65~70 m² / g.

[0044] In a preferred embodiment, the average particle size of the ultrafine calcium carbonate is 100~200nm.

[0045] In a preferred embodiment, the average particle size of the ultrafine calcium carbonate is 100~150nm.

[0046] The solid filler combination added in this application forms a three-dimensional skeleton in the matrix, effectively suppressing the linear expansion and contraction of the material when the temperature changes. It fills the micro-gaps between fibers with needle-like structure, improves the density of the matrix, and produces moderate expansion with micro-hydration reaction, actively sealing the micro-cracks caused by the difference in expansion and contraction at the interface between plastic and wood flour. Ultrafine carbonic acid further densifies the matrix. Under the combined action, a multi-level filling and densification reinforcement effect is formed, which endows the material with excellent structural stability and long-term water resistance reliability from the core matrix level.

[0047] In a preferred embodiment, the combined reinforcing agent is a combination of disproportionated rosinate potassium soap, polycarbodiimide, and epoxy fatty acid methyl ester.

[0048] In a preferred embodiment, the mass ratio of the disproportionated rosinate potassium soap, polycarbodiimide and epoxy fatty acid methyl ester is (2~4):(1.5~3):(1~2).

[0049] In a preferred embodiment, the mass ratio of the disproportionated rosinate potassium soap, polycarbodiimide, and epoxy fatty acid methyl ester is (2~3):(1.5~2):(1~1.5).

[0050] In the added composite reinforcing agent, disproportionated rosinate potassium soap is first adsorbed onto the surface of wood fibers to form a hydrophobic interfacial film. Polycarbodiimide then undergoes a cross-linking reaction with the surface active groups of wood fibers, locking the hydrophobic film into a dense polymer protective layer. This fundamentally blocks the channels for water to penetrate along the fiber interface. Meanwhile, the epoxy groups of epoxy fatty acid methyl ester form chemical bonds with the hydroxyl groups on the surface of wood fibers, and its aliphatic long chains physically entangle with the polyethylene matrix, creating a robust link between the wood and plastic phases. This collectively improves the material's impermeability and interfacial bonding strength, providing a system prerequisite for improving the overall performance.

[0051] In a preferred embodiment, the surface material comprises, by weight, 85-95 parts of high-density polyethylene, 3-5 parts of compatibilizer, 2-4 parts of wear-resistant additive, 0.5-1 parts of light stabilizer, and 3-5 parts of pigment.

[0052] In a preferred embodiment, the high-density polyethylene, compatibilizer, and light stabilizer in the surface layer material are the same as those in the core layer material.

[0053] In a preferred embodiment, the wear-resistant additive is a silicone masterbatch.

[0054] In a preferred embodiment, the pigment is at least one of iron-based inorganic pigments.

[0055] A method for preparing the above-mentioned anti-slip and water-resistant plastic wood flooring material specifically includes the following steps: S1: High-density polyethylene, wood fiber, compatibilizer, coupling agent, lubricant, antioxidant and light stabilizer are added to a high-speed mixer and mixed. Then, a combined reinforcing agent is slowly and uniformly added and mixed. Finally, solid filler is added and mixed at high speed after cooling, and the material is discharged to obtain a core layer premix; S2: The core layer premix is ​​fed into a co-rotating twin-screw extruder for melt blending and granulation, and then granulated to obtain core layer granules; S3: The surface material is added to a high-speed mixer and mixed. Then, it is fed into a co-rotating twin-screw extruder for granulation and then granulated to obtain surface layer granules. Then, a conical twin-screw co-extrusion unit is used. The core layer granules are added to the main extruder and the surface granules are added to the co-extruder to extrude and obtain a slab. When the surface temperature of the slab is 80~100℃, the embossing roller is used for embossing treatment. Then, it is vacuum cooled and shaped, and cut according to specifications to obtain the final product.

[0056] The preferred embodiment of the preparation method of the anti-slip and water-resistant plastic wood flooring material specifically includes the following steps: S1: High-density polyethylene, wood fiber, compatibilizer, coupling agent, lubricant, antioxidant and light stabilizer are added to a high-speed mixer and mixed at 600-800 rpm for 3-5 minutes at 25-30℃. Then, the combined reinforcing agent is slowly and evenly added, the temperature is raised to 60-70℃, and mixing is continued for 8-10 minutes. Finally, the temperature is lowered to 25-30℃, solid filler is added, and mixing is carried out at 1000-1200 rpm for 3-5 minutes. The material is then discharged to obtain the core layer premix; S2: The core layer premix is ​​fed into a co-rotating twin-screw extruder for melt blending and granulation. The feeding section is 150-160℃, the plasticizing section is 165-175℃, the metering section is 175-180℃, and the die head is 1... S3: The surface material is added to a high-speed mixer and mixed at 600-800 rpm for 5-8 minutes. It is then fed into a co-rotating twin-screw extruder for granulation. The feeding section is at 145-155℃, the plasticizing section at 160-170℃, the metering section at 170-175℃, and the die head at 165-170℃. The screw speed is 50-70 rpm. The surface material is then granulated. After that, a conical twin-screw co-extrusion unit is used. The core material is added to the main extruder, and the surface material is added to the co-extruder. The main extruder is at 155-185℃, and the co-extruder is at 150-175℃ to produce a slab. When the surface temperature of the slab is 80-100℃, the embossing roller is used for embossing. After vacuum cooling and shaping, it is cut according to specifications.

[0057] Beneficial effects of the application plan:

[0058] 1. The wood-plastic composite flooring material obtained in this application exhibits excellent anti-slip durability in practical applications. The surface texture can still maintain a good anti-slip effect after long-term foot traffic and friction. It is not easy to trap dirt and is easy to clean. It has outstanding water resistance and impermeability. It does not absorb water and swell, mold and degrade, or peel off between layers under alternating temperature and humidity and long-term humid environments. Its dimensional stability is significantly improved. It has little expansion and contraction deformation and is not easy to warp under conditions with large temperature differences or direct sunlight. At the same time, it is comfortable underfoot and has strong environmental adaptability. It is suitable for indoor and outdoor humid places with high requirements for anti-slip, water resistance and structural stability.

[0059] 2. The solid filler combination added in this application forms a three-dimensional skeleton in the matrix, effectively suppressing the linear expansion and contraction of the material when the temperature changes. It fills the micro gaps between the fibers with its needle-like structure, improving the density of the matrix. It also produces moderate expansion with the micro-hydration reaction, actively sealing the micro-cracks caused by the difference in expansion and contraction at the interface between the plastic and the wood flour. The matrix is ​​further compacted with ultrafine carbonic acid. Under the combined action, a multi-level filling and densification reinforcement effect is formed, which endows the material with excellent structural stability and long-term water resistance reliability from the core matrix level.

[0060] 3. In the combined reinforcing agent added in this application, disproportionated rosin acid potassium soap is first adsorbed onto the surface of wood fiber to form a hydrophobic interface film. Polycarbodiimide then undergoes a cross-linking reaction with the active groups on the surface of wood fiber, locking the hydrophobic film into a dense polymer protective layer, fundamentally blocking the channels for water to penetrate along the fiber interface. Meanwhile, the epoxy groups of epoxy fatty acid methyl ester form chemical bonds with the hydroxyl groups on the surface of wood fiber, and its aliphatic long chains physically entangle with the polyethylene matrix, building a robust link between the wood and plastic phases, jointly improving the material's impermeability and interfacial bonding strength, and providing a system prerequisite for improving the overall performance. Attached Figure Description

[0061] Figure 1 This is a photograph of the anti-slip and water-resistant wood-plastic flooring material prepared in Example 1 of this application.

[0062] Figure 2 This is a comparison chart of the UV exposure test results of the anti-slip and water-resistant wood-plastic flooring material prepared in Example 1 of this application; where left: original sample from the same batch before testing, right: sample after 2000h testing. Detailed Implementation

[0063] Preparation Example

[0064] Wood fiber: Dry 200-mesh poplar fiber powder at 105℃ until the moisture content is ≤2wt%, then pass it through a 200-mesh sieve for later use.

[0065] Combined reinforcing agent: Add disproportionated rosinate potassium soap, polycarbodiimide and epoxy fatty acid methyl ester to a mixing tank at a mass ratio of 2.8:2:1.2, and stir at 30°C and 200 rpm until a homogeneous viscous mixture is formed, and set aside.

[0066] Polycarbodiimide, industrial grade, Jiangsu Bost Chemical Co., Ltd., China.

[0067] Specific raw material source: High-density polyethylene is DMDA-8008, produced by PetroChina Dushanzi Petrochemical.

[0068] The polyethylene grafted with maleic anhydride is Arkema 18302N, from Arkema, France.

[0069] The silicone masterbatch is MB50-010, manufactured by Dow Corning, USA.

[0070] Example 1

[0071] A non-slip and water-resistant wood-plastic flooring material includes a core layer and a surface layer; the core layer has a thickness of 22 mm and the surface layer has a thickness of 1.5 mm.

[0072] The core layer raw materials, by weight, include: 40 parts high-density polyethylene, 60 parts wood fiber, 6.8 parts compatibilizer, 1.8 parts coupling agent, 1.3 parts lubricant, 0.3 parts antioxidant, 0.2 parts light stabilizer, 20 parts solid filler, and 7.8 parts composite reinforcing agent.

[0073] The wood fiber powder was prepared using the example scheme.

[0074] The compatibilizer is polyethylene grafted with maleic anhydride Arkema 18302N; the coupling agent is γ-aminopropyltriethoxysilane; the lubricant is ethylene bis-stearamide; and the light stabilizer is UV-326.

[0075] The antioxidant is a combination of antioxidant 1010 and antioxidant 1076 in a mass ratio of 2.5:0.8.

[0076] The solid filler is a combination of short-cut basalt fibers, wollastonite powder and active magnesium oxide, with a mass ratio of 3.5:6.8:3.2:5.5.

[0077] The average length of the short-cut basalt fibers is 4 mm, and the average diameter is 12 μm.

[0078] The average particle size of wollastonite powder is 2 μm; the specific surface area of ​​active magnesium oxide is 68 m² / g; and the average particle size of ultrafine calcium carbonate is 100 nm.

[0079] The combined reinforcing agent was prepared using the example formulation.

[0080] The surface material, by weight, includes: 90 parts high-density polyethylene, 4.5 parts compatibilizer, 3 parts wear-resistant additive, 0.6 parts light stabilizer, and 4.2 parts pigment.

[0081] The high-density polyethylene, compatibilizer, and light stabilizer used in the surface layer are the same as those used in the core layer.

[0082] The wear-resistant additive is silicone masterbatch MB50-010; the pigment is iron oxide black.

[0083] A method for preparing the above-mentioned anti-slip and water-resistant plastic wood flooring material specifically includes the following steps: S1: High-density polyethylene, wood fiber, compatibilizer, coupling agent, lubricant, antioxidant, and light stabilizer are added to a high-speed mixer and mixed at 30°C and 600 rpm for 5 minutes. Then, a combined reinforcing agent is slowly and uniformly added, the temperature is raised to 70°C, and mixing continues for 10 minutes. Finally, the temperature is lowered to 30°C, solid filler is added, and mixing is carried out at 1000 rpm for 5 minutes. The material is then discharged to obtain a core layer premix; S2: The core layer premix is ​​fed into a co-rotating twin-screw extruder for melt blending and granulation. The feeding section is 160°C, the plasticizing section is 175°C, and the metering section is 180°C. S1: The core layer granules are granulated at 175°C and 80 rpm. S2: The surface layer material is added to a high-speed mixer and mixed at 800 rpm for 6 minutes. It is then fed into a co-rotating twin-screw extruder for granulation. The feeding section is 150°C, the plasticizing section is 165°C, the metering section is 170°C, the die head is 165°C, and the screw speed is 60 rpm. The surface layer granules are granulated. Then, a conical twin-screw co-extrusion unit is used. The core layer granules are added to the main extruder, and the surface layer granules are added to the co-extruder. The main extruder is 175°C and the co-extruder is 165°C to produce a slab. When the surface temperature of the slab is 100°C, the embossing roller is used for embossing. After vacuum cooling and shaping, it is cut according to specifications.

[0084] The actual sample of the anti-slip and water-resistant plastic wood flooring material obtained in this embodiment is shown below. Figure 1 As shown.

[0085] Example 2

[0086] The difference between the anti-slip and water-resistant plastic wood flooring material and Example 1 is that the core layer raw materials, by weight, include: 36 parts high-density polyethylene, 55 parts wood fiber, 6.2 parts compatibilizer, 1.8 parts coupling agent, 1.3 parts lubricant, 0.3 parts antioxidant, 0.2 parts light stabilizer, 18 parts solid filler, and 6.2 parts combined reinforcing agent.

[0087] Example 3

[0088] The difference between the anti-slip and water-resistant plastic wood flooring material and Example 1 is that the mass ratio of chopped basalt fiber, wollastonite powder, active magnesium oxide and ultrafine calcium carbonate is 4.5:6.2:3.8:5.

[0089] Comparative Example 1

[0090] The difference between the anti-slip and water-resistant plastic wood flooring material and Example 1 is that the core layer raw materials, by weight, include: 50 parts high-density polyethylene, 60 parts wood fiber, 6.8 parts compatibilizer, 1.8 parts coupling agent, 1.3 parts lubricant, 0.3 parts antioxidant, 0.2 parts light stabilizer, 22 parts solid filler, and 3.2 parts combined reinforcing agent.

[0091] Comparative Example 2

[0092] The difference between the anti-slip and water-resistant wood-plastic flooring material and Example 1 is that the core layer raw materials, by weight, include: 40 parts high-density polyethylene, 60 parts wood fiber, 6.8 parts compatibilizer, 1.8 parts coupling agent, 1.3 parts lubricant, 0.3 parts antioxidant, 0.2 parts light stabilizer, 12.5 parts solid filler, and 18 parts composite reinforcing agent.

[0093] Comparative Example 3

[0094] The difference between the anti-slip and water-resistant plastic wood flooring material and Example 1 is that: combined reinforcing agent: disproportionated rosin acid potassium soap, polycarbodiimide and epoxy fatty acid methyl ester are added to a mixing tank at a mass ratio of 4:0.5:1.5 and stirred at 30°C and 200 rpm until a homogeneous viscous mixture is formed, and then set aside.

[0095] Comparative Example 4

[0096] The difference between the anti-slip and water-resistant plastic wood flooring material and Example 1 is that: combined reinforcing agent: disproportionated rosin acid potassium soap, polycarbodiimide and epoxy fatty acid methyl ester are added to a mixing tank at a mass ratio of 2:3.5:0.5 and stirred at 30°C and 200 rpm until a homogeneous viscous mixture is formed, and then set aside.

[0097] Comparative Example 5

[0098] The difference between the anti-slip and water-resistant wood-plastic flooring material and Example 1 is that the solid filler is a combination of short-cut basalt fiber, wollastonite powder and active magnesium oxide, with a mass ratio of 1.5:9:1:7.5.

[0099] Comparative Example 6

[0100] The difference between the anti-slip and water-resistant wood-plastic flooring material and Example 1 is that the solid filler is a combination of short-cut basalt fiber, wollastonite powder and active magnesium oxide in a mass ratio of 7:8:2:2.

[0101] Performance Evaluation

[0102] 1. Static bending strength: The test references GB / T 17657-2013:4.7. The average of 10 test results is recorded in Table 1.

[0103] 2. Water absorption rate: The test shall be conducted in accordance with GB / T 24508-2020:6.5.6. The average of 10 test results shall be recorded in Table 1.

[0104] 3. Resistance to thermal cycling: The test references GB / T 24508-2020:6.5.19. The result is the change rate of length dimension. The average of 10 test results is recorded in Table 1.

[0105] 4. Freeze-thaw resistance: The test is conducted in accordance with GB / T 24508-2020:6.5.20. The result is the static bending strength retention rate. The average of 10 test results is recorded in Table 1.

[0106] 5. Ultraviolet Exposure: Tested according to ISO 4892-3-2016, lamp = UVA-340, irradiance = 0.76W / (m²). 2 (nm), wavelength 340nm, UV lamp exposure for 8h, blackboard temperature 60±3℃, condensation for 4h, blackboard temperature 50±3℃, test period 2000h, color difference (ΔE) measured with a colorimeter, average of 10 test results recorded in Table 1, where the test comparison of Example 1 is as follows. Figure 2 As shown.

[0107] 6. Drop test at room temperature: The test is performed according to GB / T 24508-2020:6.5.4. The result is the diameter of the indentation. The average of 10 test results is recorded in Table 1.

[0108] 7. Abrasion resistance: The test references GB / T 17657-2013:4.44. The result is taken as the g / 100r value. The average of 10 test results is recorded in Table 1.

[0109] 8. Creep recovery: The test shall be conducted in accordance with GB / T 24508-2020:6.5.13. The result shall be the percentage value of creep recovery rate. The average value of 10 test results shall be recorded in Table 1.

[0110] Table 1 Performance Evaluation Table 1

[0111]

[0112] Table 2 Performance Evaluation Table 2

[0113]

[0114] Test Result Analysis: The results in Tables 1 and 2 show that Examples 1-3 of this application, based on the corresponding technical solutions defined in this application, achieved superior performance compared to Comparative Examples 1-6. The technical solutions adopted in Examples 1-3 form a three-dimensional skeleton in the matrix, effectively suppressing the linear expansion and contraction of the material during temperature changes. The needle-like structure fills the microscopic gaps between fibers, increasing the matrix density. Moderate expansion occurs due to micro-hydration reaction, actively sealing microcracks at the plastic-wood flour interface caused by expansion and contraction differences. Furthermore, the combined reinforcing agent fundamentally blocks the channels for moisture penetration along the fiber interface. The epoxy groups of the epoxy fatty acid methyl ester form chemical bonds with the hydroxyl groups on the wood fiber surface, while its aliphatic long chains physically entangle with the polyethylene matrix, constructing a robust link between the wood and plastic phases, jointly improving the material's impermeability and interfacial bonding strength. Comparative Examples 1-6, however, employed different solutions than those specified in this application, resulting in a significant decrease in the effectiveness of their raw materials within the wood-plastic composite material system. Consequently, the performance of the final product was inferior to that of Examples 1-3.

[0115] The above are merely preferred embodiments and comparative examples of the technical solutions of this application. It should be noted that for those skilled in the art, any improvements and substitutions made with the same ideas without departing from the principles described in this application should also be considered within the scope of protection of this application.

Claims

1. A non-slip, water-resistant wood-plastic flooring material, characterized by the following: Including the core layer and surface structure; The core layer raw materials, by weight, include: 30-42 parts high-density polyethylene, 50-65 parts wood fiber, 5-8 parts compatibilizer, 1-3 parts coupling agent, 1-2 parts lubricant, 0.2-0.3 parts antioxidant, 0.2-0.4 parts light stabilizer, 15-25 parts solid filler, and 4.5-9 parts composite reinforcing agent; The solid filler is a combination of short-cut basalt fiber, wollastonite powder and active magnesium oxide, with a mass ratio of (3~5):(5~8):(3~4):(4~6). The combined reinforcing agent is a combination of disproportionated rosinate potassium soap, polycarbodiimide and epoxy fatty acid methyl ester, in a mass ratio of (2~4):(1.5~3):(1~2).

2. The anti-slip and water-resistant plastic wood flooring material according to claim 1, characterized in that: the wood fiber powder is at least one of poplar fiber powder, rice husk powder, bamboo powder and peanut shell powder.

3. The anti-slip and water-resistant wood-plastic flooring material according to claim 2, characterized in that: The compatibilizer is polyethylene grafted with maleic anhydride or POE grafted with maleic anhydride.

4. The anti-slip and water-resistant wood-plastic flooring material according to claim 3, characterized in that: the coupling agent is at least one selected from γ-aminopropyltriethoxysilane, vinyltrimethoxysilane, γ-methacryloyloxypropyltrimethoxysilane, γ-(2,3-epoxypropoxy)propyltrimethoxysilane and vinyltris(2-methoxyethoxy)silane.

5. The anti-slip and water-resistant wood-plastic flooring material according to claim 4, characterized in that: the lubricant is at least one of ethylene bis-stearamide, oxidized polyethylene wax, pentaerythritol tetrastearate and zinc stearate.

6. The anti-slip and water-resistant wood-plastic flooring material according to claim 5, characterized in that: The average length of the short-cut basalt fibers is 3-6 mm, and the average diameter is 10-15 μm.

7. The anti-slip and water-resistant wood-plastic flooring material according to claim 6, characterized in that: The average particle size of the wollastonite powder is 1~3μm.

8. The anti-slip and water-resistant wood-plastic flooring material according to claim 7, characterized in that the average particle size of the ultrafine calcium carbonate is 100~200nm.

9. The anti-slip and water-resistant wood-plastic flooring material according to claim 8, characterized in that: The surface material comprises, by weight, 85-95 parts of high-density polyethylene, 3-5 parts of compatibilizer, 2-4 parts of wear-resistant additive, 0.5-1 parts of light stabilizer, and 3-5 parts of pigment.

10. A method for preparing the anti-slip and water-resistant wood-plastic flooring material according to any one of claims 1 to 9, characterized in that: Specifically, the process includes the following steps: S1: High-density polyethylene, wood fiber, compatibilizer, coupling agent, lubricant, antioxidant, and light stabilizer are added to a high-speed mixer and mixed. Then, a combined reinforcing agent is slowly and evenly added and mixed. Finally, solid fillers are added and mixed at high speed after cooling. The resulting material is the core layer premix. S2: The core layer premix is ​​fed into a co-rotating twin-screw extruder for melt blending and granulation. The resulting material is then cut into core layer granules. S3: The surface material is added to a high-speed mixer and mixed. The surface material is then fed into a co-rotating twin-screw extruder for granulation. The resulting material is then cut into surface granules. Subsequently, a conical twin-screw co-extrusion unit is used. The core layer granules are added to the main extruder, and the surface granules are added to the co-extruder. The slab is extruded to obtain a blank. When the surface temperature of the blank is 80~100℃, the blank is embossed by an embossing roller. After vacuum cooling and shaping, the blank is cut to specifications.

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