Mildew-proof and flame-retardant wood-plastic composite decorative wallboard and preparation method thereof

Abstract

The invention discloses a mould-proof and flame-retardant wood-plastic composite decorative wallboard which comprises the following components in percentage by weight: 10-40% of mixed powder, 1-10% of high-density polyethylene (HDPE), 1-5% of a mould inhibitor, 1-5% of a reinforcing agent and 1-5% of a stabilizing agent. The high-density polyethylene (HDPE) accounts for 10-40% of the total weight, the flame retardant accounts for 1-10% of the total weight, the mixed powder accounts for 30-75% of the total weight, the mould inhibitor accounts for 1-5% of the total weight, the reinforcing agent accounts for 1-5% of the total weight, the reinforcing agent accounts for 1-5% of the total weight, and the stabilizing agent accounts for 1-5% of the total weight. The reinforcing agent accounts for 1-5% of the total weight, and the stabilizer accounts for 1-5% of the total weight. According to the wood-plastic composite decorative wall board, the mildew preventive and the flame retardant are added, growth of mildew can be effectively inhibited, the wood-plastic composite decorative wall board has good flame retardant performance, and the safety and durability of products are improved.

Description

Technical Field

[0001] The invention relates to the technical field of wood-plastic composite materials, in particular to a mildew-proof and flame-retardant wood-plastic composite decorative wallboard and a preparation method thereof. Background Art

[0002] Wood Plastic Composite Decorative Wall Panel is a decorative material made of wood powder and plastic (usually polyethylene or polypropylene) and other additives. It combines the advantages of wood and plastic, with the natural beauty of wood and the durability, waterproofness and weather resistance of plastic. Wood Plastic Composite Decorative Wall Panel is often used for indoor and outdoor wall decoration. Wood Plastic Composite Material can simulate the texture and feel of wood, giving people a natural and warm feeling. It provides a variety of color and surface treatment options to meet different decorative styles and personal preferences. Wood Plastic Composite Decorative Wall Panel has the durability and weather resistance of plastic, can resist corrosion, moisture, insects and ultraviolet rays, is not easy to deform, crack or fade, and has a long service life. Wood Plastic Composite Material has good waterproof performance and will not absorb water and swell or get damp, so it is suitable for humid environments and areas that require waterproof functions, such as bathrooms, kitchens and terraces. Wood Plastic Composite Decorative Wall Panel uses renewable wood powder as raw material, while reducing the demand for natural wood. It can also be recycled, reducing the impact on the environment and conforming to the principle of sustainable development.

[0003] The overall production process of the existing wood-plastic composite decorative wallboard is complicated, and the products produced have poor mildew and flame retardant effects. Here, we propose a mildew-proof and flame-retardant wood-plastic composite decorative wallboard and a preparation method thereof. Summary of the invention

[0004] The present invention solves the above technical deficiencies and adopts a modified technical solution, a mildew-proof and flame-retardant wood-plastic composite decorative wallboard, comprising mixed powder, high-density polyethylene (HDPE), flame retardant, mildew-proof agent, reinforcing agent and stabilizer, wherein the high-density polyethylene (HDPE) accounts for 10-40% of the total weight, the flame retardant accounts for 1-10% of the total weight, the mixed powder accounts for 30-75% of the total weight, the mildew-proof agent accounts for 1-5% of the total weight, the reinforcing agent accounts for 1-5% of the total weight, and the stabilizer accounts for 1-5% of the total weight.

[0005] As a further preferred embodiment of the present invention, the raw materials of the mixed powder include 5-30 parts of plant fiber, 8-30 parts of rice husk powder, 12-30 parts of particleboard waste, 4-8 parts of plastic waste, 6-15 parts of activated calcium carbonate, 10-20 parts of silicon dioxide powder, 2-8 parts of montmorillonite powder, and 6-10 parts of calcium stearate.

[0006] As a further preferred embodiment of the present invention, the flame retardant component includes 10-20 parts of melamine, 10-20 parts of phenolic resin, 10-20 parts of cyclic phosphate, 8-16 parts of nano aluminum silicate, 8-16 parts of nano aluminum oxide, and 5-15 parts of halogen-free flame retardant.

[0007] As a further preferred embodiment of the present invention, the antifungal agent is a silver ion antibacterial agent, the reinforcing agent is nanocellulose, and the stabilizer is an epoxy resin stabilizer.

[0008] As a further preferred embodiment of the present invention, the density of the high-density polyethylene (HDPE) is 0.941-0.965 g / cm 3 , melt index: 0.1-50g / 10min, tensile strength: 20-40MPa, flexural modulus: 900-1500MPa, heat deformation temperature: 120-130℃.

[0009] As a further preferred embodiment of the present invention, the method comprises the following steps:

[0010] S1. Mix 50% of the mixed powder and 30% of high-density polyethylene (HDPE) together, and use a blender or mixer to mix until a uniform mixture is obtained;

[0011] S2. Add 5% of the flame retardant to the mixture, add 5% of the mildew inhibitor to the mixture, add 5% of the reinforcing agent, add 5% of the stabilizer, and continue to stir the mixture to ensure that all ingredients are evenly dispersed and there is no obvious particulate matter;

[0012] S3, pouring the mixture into a mold, placing the mold into an extruder, heating and extruding the mixture to form the shape of the wallboard;

[0013] S4. After cooling and curing, take out the mildew-proof and flame-retardant wood-plastic composite decorative wallboard and perform necessary trimming and processing.

[0014] As a further preferred embodiment of the present invention, in step S2, the stirring temperature is controlled at 120-180°C, and the stirring speed is controlled at 320r / min-420r / min.

[0015] As a further preferred embodiment of the present invention, in step S3, the temperature of the extruder feed zone is set between 50-70°C to ensure smooth feeding and preheating of the material; the temperature of the extruder head is set between 180-220°C to ensure sufficient melting and extrusion of the material.

[0016] Beneficial Effects

[0017] The mildew-proof and flame-retardant properties of the present invention: the wood-plastic composite decorative wallboard is added with mildew-proof agent and flame retardant, which can effectively inhibit the growth of mildew, and has good flame-retardant properties, thereby improving the safety and durability of the product.

[0018] Optimization of material composition: By adjusting the ingredients of the mixed powder and using raw materials such as plant fiber, rice husk powder, and particleboard waste, the sustainability and environmental friendliness of the material are increased.

[0019] Stability and strength optimization: By adding reinforcing agents and stabilizers, the stability and strength of the wood-plastic composite decorative wall panels are improved, the risk of deformation and breakage is reduced, and the service life is extended.

[0020] Extrusion process optimization: Extrusion process control in the preparation method, including the control of stirring temperature and stirring speed, extruder feed zone temperature and extruder head temperature, helps to ensure uniform melting and extrusion of materials, and improves product quality and consistency. By optimizing the material formula and preparation process, the wood-plastic composite decorative wallboard has a variety of excellent properties such as mildew resistance, flame retardancy, weather resistance, and water resistance, and is suitable for various indoor and outdoor decoration applications, providing more choices and possibilities. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The invention provides a technical solution: a mildew-proof and flame-retardant wood-plastic composite decorative wallboard, comprising mixed powder, high-density polyethylene (HDPE), flame retardant, mildew-proof agent, reinforcing agent and stabilizer, wherein the high-density polyethylene (HDPE) accounts for 10-40% of the total weight, the flame retardant accounts for 1-10% of the total weight, the mixed powder accounts for 30-75% of the total weight, the mildew-proof agent accounts for 1-5% of the total weight, the reinforcing agent accounts for 1-5% of the total weight, and the stabilizer accounts for 1-5% of the total weight.

[0023] The raw materials of the mixed powder include 5-30 parts of plant fiber, 8-30 parts of rice husk powder, 12-30 parts of particle board waste, 4-8 parts of plastic waste, 6-15 parts of activated calcium carbonate, 10-20 parts of silicon dioxide powder, 2-8 parts of montmorillonite powder and 6-10 parts of calcium stearate.

[0024] The flame retardant ingredients include 10-20 parts of melamine, 10-20 parts of phenolic resin, 10-20 parts of cyclic phosphate, 8-16 parts of nano aluminum silicate, 8-16 parts of nano aluminum oxide, and 5-15 parts of halogen-free flame retardant.

[0025] The mildew preventer is a silver ion antibacterial agent, the reinforcing agent is nanocellulose, and the stabilizer is an epoxy resin stabilizer.

[0026] High-density polyethylene (HDPE) density: 0.941-0.965g / cm 3 , melt index: 0.1-50g / 10min, tensile strength: 20-40MPa, flexural modulus: 900-1500MPa, heat deformation temperature: 120-130℃.

[0027] The following steps are included:

[0028] S1. Mix 50% of the mixed powder and 30% of high-density polyethylene (HDPE) together, and use a blender or mixer to mix until a uniform mixture is obtained;

[0029] S2. Add 5% of the flame retardant to the mixture, add 5% of the mildew inhibitor to the mixture, add 5% of the reinforcing agent, add 5% of the stabilizer, and continue to stir the mixture to ensure that all ingredients are evenly dispersed and there is no obvious particulate matter;

[0030] S3, pouring the mixture into a mold, placing the mold into an extruder, heating and extruding the mixture to form the shape of the wallboard;

[0031] S4. After cooling and curing, take out the mildew-proof and flame-retardant wood-plastic composite decorative wallboard and perform necessary trimming and processing.

[0032] In step S2, the stirring temperature is controlled at 120-180°C, and the stirring speed is controlled at 320r / min-420r / min.

[0033] In step S3, the temperature of the extruder feed zone is set between 50-70°C to ensure smooth feeding and preheating of the material; the temperature of the extruder head is set between 180-220°C to ensure sufficient melting and extrusion of the material.

[0034] Embodiment 1

[0035] A mildew-proof and flame-retardant wood-plastic composite decorative wallboard comprises mixed powder, high-density polyethylene (HDPE), flame retardant, mildew-proof agent, reinforcing agent and stabilizer, wherein the high-density polyethylene (HDPE) accounts for 50% of the total weight, the flame retardant accounts for 5% of the total weight, the mixed powder accounts for 30% of the total weight, the mildew-proof agent accounts for 5% of the total weight, the reinforcing agent accounts for 5% of the total weight, and the stabilizer accounts for 5% of the total weight.

[0036] The raw materials of the mixed powder include 30 parts of plant fiber, 30 parts of rice husk powder, 30 parts of particleboard waste, 8 parts of plastic waste, 15 parts of activated calcium carbonate, 20 parts of silica powder, 8 parts of montmorillonite powder, and 10 parts of calcium stearate. The flame retardant ingredients include 20 parts of melamine, 20 parts of phenolic resin, 20 parts of cyclic phosphate, 16 parts of nano-aluminum silicate, 16 parts of nano-aluminum oxide, and 15 parts of halogen-free flame retardant. The mildew inhibitor is a silver ion antibacterial agent, the reinforcing agent is nanocellulose, and the stabilizer is an epoxy resin stabilizer. High-density polyethylene (HDPE) density: 0.965g / cm 3 , melt index: 50g / 10min, tensile strength: 40MPa, flexural modulus: 1500MPa, heat deformation temperature: 130℃. The method comprises the following steps: mixing 50% of mixed powder and 30% of high-density polyethylene (HDPE) together, and mixing them by using a stirrer or a mixer until a uniform mixture is obtained; S2, adding 5% of a flame retardant to the mixture, adding 5% of a mildew inhibitor to the mixture, adding 5% of a reinforcing agent, adding 5% of a stabilizer, and continuing to stir the mixture to ensure that all ingredients are evenly dispersed and there is no obvious granular matter; in step S2, the stirring temperature is controlled at 180°C, and the stirring speed is controlled at 420r / min; S3, pouring the mixture into a mold, placing the mold into an extruder, heating and extruding the mixture to form the shape of a wallboard; in step S3, the temperature of the extruder feed zone is set between 70°C to ensure smooth feeding and preheating of the material; the temperature of the extrusion head is set between 220°C to ensure full melting and extrusion of the material; S4, after cooling and curing, the mildew-proof and flame-retardant wood-plastic composite decorative wallboard is taken out, and necessary trimming and processing are performed.

[0037] Embodiment 2

[0038] A mildew-proof and flame-retardant wood-plastic composite decorative wallboard comprises mixed powder, high-density polyethylene (HDPE), flame retardant, mildew-proof agent, reinforcing agent and stabilizer, wherein the high-density polyethylene (HDPE) accounts for 20% of the total weight, the flame retardant accounts for 10% of the total weight, the mixed powder accounts for 55% of the total weight, the mildew-proof agent accounts for 5% of the total weight, the reinforcing agent accounts for 5% of the total weight, and the stabilizer accounts for 5% of the total weight.

[0039] The raw materials of the mixed powder include 22 parts of plant fiber, 22 parts of rice husk powder, 20 parts of particleboard waste, 6 parts of plastic waste, 8 parts of activated calcium carbonate, 15 parts of silica powder, 6 parts of montmorillonite powder, and 8 parts of calcium stearate. The flame retardant ingredients include 15 parts of melamine, 15 parts of phenolic resin, 15 parts of cyclic phosphate, 12 parts of nano-aluminum silicate, 12 parts of nano-aluminum oxide, and 10 parts of halogen-free flame retardant. The mildew inhibitor is a silver ion antibacterial agent, the reinforcing agent is nanocellulose, and the stabilizer is an epoxy resin stabilizer. High-density polyethylene (HDPE) density: 0.941g / cm 3, melt index: 0.1g / 10min, tensile strength: 20MPa, flexural modulus: 900MPa, heat deformation temperature: 120℃.

[0040] The following steps are included:

[0041] S1. Mix 55% of the mixed powder and 20% of high-density polyethylene (HDPE) together. A blender or mixer can be used to mix until a uniform mixture is obtained; S2. Add 10% of the flame retardant to the mixture, add 5% of the mildew inhibitor to the mixture, add 5% of the reinforcing agent, add 5% of the stabilizer, and continue to stir the mixture to ensure that all ingredients are evenly dispersed and there is no obvious granular material; in step S2, the stirring temperature is controlled at 120°C, and the stirring speed is controlled at 320r / min. S3. Pour the mixture into a mold, put the mold into an extruder, heat and extrude the mixture to form the shape of a wallboard; in step S3, the temperature of the extruder feed zone: set between 50°C to ensure smooth feeding and preheating of the material; the extrusion head temperature: set between 180°C to ensure sufficient melting and extrusion of the material, S4. After cooling and curing, take out the mildew-proof and flame-retardant wood-plastic composite decorative wallboard and perform necessary trimming and processing.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mildew-proof and flame-retardant wood-plastic composite decorative wallboard, characterized in that: The invention comprises mixed powder, high-density polyethylene (HDPE), flame retardant, mildewproof agent, reinforcing agent and stabilizer, wherein the high-density polyethylene (HDPE) accounts for 10-40% of the total weight, the flame retardant accounts for 1-10% of the total weight, the mixed powder accounts for 30-75% of the total weight, the mildewproof agent accounts for 1-5% of the total weight, the reinforcing agent accounts for 1-5% of the total weight, and the stabilizer accounts for 1-5% of the total weight.

2. The mildew-proof and flame-retardant wood-plastic composite decorative wallboard according to claim 1, characterized in that: The raw materials of the mixed powder include 5-30 parts of plant fiber, 8-30 parts of rice husk powder, 12-30 parts of particle board waste, 4-8 parts of plastic waste, 6-15 parts of active calcium carbonate, 10-20 parts of silicon dioxide powder, 2-8 parts of montmorillonite powder and 6-10 parts of calcium stearate.

3. The mildew-proof and flame-retardant wood-plastic composite decorative wallboard according to claim 1, characterized in that: The flame retardant component includes 10-20 parts of melamine, 10-20 parts of phenolic resin, 10-20 parts of cyclic phosphate, 8-16 parts of nano aluminum silicate, 8-16 parts of nano aluminum oxide, and 5-15 parts of halogen-free flame retardant.

4. The mildew-proof and flame-retardant wood-plastic composite decorative wallboard according to claim 1, characterized in that: The mildew preventer is a silver ion antibacterial agent, the reinforcing agent is nanocellulose, and the stabilizer is an epoxy resin stabilizer.

5. The mildew-proof and flame-retardant wood-plastic composite decorative wallboard according to claim 1, characterized in that: The high-density polyethylene (HDPE) density: 0.941-0.965 g / cm 3 , melt index: 0.1-50g / 10min, tensile strength: 20-40MPa, flexural modulus: 900-1500MPa, heat deformation temperature: 120-130℃.

6. The method for preparing a mildew-proof and flame-retardant wood-plastic composite decorative wallboard according to claim 1, characterized in that: The following steps are included: S1. Mix 50% of the mixed powder and 30% of high-density polyethylene (HDPE) together, and use a blender or mixer to mix until a uniform mixture is obtained; S2. Add 5% of the flame retardant to the mixture, add 5% of the mildew inhibitor to the mixture, add 5% of the reinforcing agent, add 5% of the stabilizer, and continue to stir the mixture to ensure that all ingredients are evenly dispersed and there is no obvious particulate matter; S3, pouring the mixture into a mold, placing the mold into an extruder, heating and extruding the mixture to form the shape of the wallboard; S4. After cooling and curing, take out the mildew-proof and flame-retardant wood-plastic composite decorative wallboard and perform necessary trimming and processing.

7. The method for preparing a mildew-proof and flame-retardant wood-plastic composite decorative wallboard according to claim 6, characterized in that: In step S2, the stirring temperature is controlled at 120-180°C, and the stirring speed is controlled at 320r / min-420r / min.

8. The method for preparing a mildew-proof and flame-retardant wood-plastic composite decorative wallboard according to claim 6, characterized in that: In step S3, the temperature of the extruder feed zone is set between 50-70°C to ensure smooth feeding and preheating of the material; the temperature of the extruder head is set between 180-220°C to ensure sufficient melting and extrusion of the material.