CN113214670A - Plastic-wood board and preparation method thereof - Google Patents
Plastic-wood board and preparation method thereof Download PDFInfo
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- CN113214670A CN113214670A CN202110539360.9A CN202110539360A CN113214670A CN 113214670 A CN113214670 A CN 113214670A CN 202110539360 A CN202110539360 A CN 202110539360A CN 113214670 A CN113214670 A CN 113214670A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K2003/265—Calcium, strontium or barium carbonate
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- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a plastic-wood board, which comprises the following raw materials in parts by weight: 100-200 parts of wood powder, 30-50 parts of calcium carbonate powder, 25-40 parts of kaolin powder, 1-2 parts of graphene, 4-6 parts of an aluminate coupling agent, 20-50 parts of maleic anhydride grafted plastic particles, 20-50 parts of plastic particles, 0.45-0.7 part of calcium stearate, 0.25-0.3 part of an antioxidant, 0.1-0.5 part of polyethylene glycol and the balance of water; the preparation method comprises the following steps: screening wood powder and calcium carbonate powder, preparing coupling agent modified wood powder, preparing active calcium carbonate powder, preparing modified plastic particles, mixing the materials, heating and shaping to obtain a plastic-wood board; the invention has the beneficial effects that: the plastic-wood board prepared by the invention has the advantages of easy cutting and opening, strong compression resistance, bending resistance and impact resistance, water resistance, corrosion resistance, good weather resistance, no formaldehyde, good flame retardance and recyclability.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a plastic-wood board and a preparation method thereof.
Background
The plastic wood material, also called wood-plastic composite material, can be understood as a board or a section bar which is mainly made of plastics (recovered waste plastics such as polypropylene (pp), Polyethylene (PE), Polyethylene (PV) and the like) as raw materials, is mixed into a new wood material by adding waste plant fibers such as wood powder, rice hulls, straws and the like, and is subjected to plastic processing technologies such as extrusion, mould pressing, injection molding and the like, so that the produced board or section bar is mainly used in industries such as building materials, furniture, logistics packaging and the like The contradiction of wood supply shortage is a low-carbon, green, recyclable and ecological plastic-wood material with great development prospect;
at the present stage, the traditional wood-plastic composite material and the finished product thereof are not developed well, on one hand, when the composite material bears stronger pressure or impact force, the composite material still has the condition of deformation and damage and has poorer compressive strength and bending strength, on the other hand, the composite material is subjected to long-term sun and rain or stronger corrosion outside, the stability of the wood-plastic composite material is seriously influenced, the condition of poor external connection fixation is easy to occur, and the weather resistance is insufficient.
Disclosure of Invention
The invention aims to provide a plastic-wood board and a preparation method thereof, and the plastic-wood board has the advantages of easy cutting and hole opening, strong compression resistance, bending resistance and impact resistance, water resistance, corrosion resistance, good weather resistance, no formaldehyde, good flame retardance and recyclability.
In order to achieve the purpose, the invention adopts the following technical scheme:
the plastic-wood board comprises the following raw materials in parts by weight: 100-200 parts of wood powder, 30-50 parts of calcium carbonate powder, 25-40 parts of kaolin powder, 1-2 parts of graphene, 4-6 parts of an aluminate coupling agent, 20-50 parts of maleic anhydride grafted plastic particles, 20-50 parts of plastic particles, 0.45-0.7 part of calcium stearate, 0.25-0.3 part of an antioxidant, 0.1-0.5 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 100 parts of wood powder, 30 parts of calcium carbonate powder, 25 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 20 parts of maleic anhydride grafted plastic particles, 20 parts of plastic particles, 0.45 part of calcium stearate, 0.25 part of an antioxidant, 0.1 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 200 parts of wood powder, 50 parts of calcium carbonate powder, 40 parts of kaolin powder, 2 parts of graphene, 6 parts of an aluminate coupling agent, 50 parts of maleic anhydride grafted plastic particles, 50 parts of plastic particles, 0.7 part of calcium stearate, 0.3 part of an antioxidant, 0.5 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 150 parts of wood powder, 45 parts of calcium carbonate powder, 35 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 45 parts of maleic anhydride grafted plastic particles, 45 parts of plastic particles, 0.7 part of calcium stearate, 0.3 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 120 parts of wood powder, 30 parts of calcium carbonate powder, 25 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 40 parts of maleic anhydride grafted plastic particles, 40 parts of plastic particles, 0.6 part of calcium stearate, 0.28 part of an antioxidant, 0.3 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 180 parts of wood powder, 48 parts of calcium carbonate powder, 38 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 48 parts of maleic anhydride grafted plastic particles, 48 parts of plastic particles, 0.65 part of calcium stearate, 0.28 part of an antioxidant, 0.5 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 100 parts of wood powder, 32 parts of calcium carbonate powder, 28 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 35 parts of maleic anhydride grafted plastic particles, 35 parts of plastic particles, 0.45 part of calcium stearate, 0.25 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 140 parts of wood powder, 38 parts of calcium carbonate powder, 28 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 45 parts of maleic anhydride grafted plastic particles, 45 parts of plastic particles, 0.35 part of calcium stearate, 0.25 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
Preferably, the plastic-wood board comprises the following raw materials in parts by weight: 160 parts of wood powder, 40 parts of calcium carbonate powder, 35 parts of kaolin powder, 2 parts of graphene, 6 parts of an aluminate coupling agent, 46 parts of maleic anhydride grafted plastic particles, 46 parts of plastic particles, 0.65 part of calcium stearate, 0.3 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
The invention also provides a preparation method of the plastic-wood board, which comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 40-100 meshes and the calcium carbonate powder with the average particle size of 200-400 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying the wood flour at 100 ℃ for 2-4 h, adding the wood flour into a container with a heating stirrer, stirring, adding the corresponding parts by weight of aluminate coupling agent at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 80-90 ℃, adding polyethylene glycol, reacting for 30-60 min, filtering, drying the filtrate at 60-70 ℃ for 5-9 h, grinding, and screening to obtain active calcium carbonate powder with the particle size of 200-400 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 5-10 min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 150-200 ℃, and controlling the temperature of a die head to be 180-240 ℃ to obtain modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 180-200 ℃, controlling the temperature of a die head to be 190-210 ℃, and sizing through a flat die to obtain the plastic-wood board.
The invention has the beneficial effects that: the board prepared by the invention has the physical properties similar to those of a common board, is easy to drill, cut and nail, has smooth and flat surface and high hardness, maintains the rigidity of the board, has good toughness, cannot deform after being pressed by high strength, resists bending, compression and impact; the waterproof and anti-corrosion paint has good weather resistance, does not deform, delaminate and expand due to sun and rain, does not contain formaldehyde, has good flame retardance, and can be recycled; when the building board is used as a building board, the building board is easy to demould, does not need to be brushed with a demoulding agent, does not absorb water during grouting, has good maintenance effect, smooth demoulding, does not need secondary plastering, can be widely developed and used in expressways, pipe gallery projects and high-rise buildings, and effectively solves the problems of low work efficiency and high loss of the traditional common board.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below.
Example 1
The plastic-wood board comprises the following raw materials in parts by weight: 100 parts of wood powder, 30 parts of calcium carbonate powder, 25 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 20 parts of maleic anhydride grafted plastic particles, 20 parts of plastic particles, 0.45 part of calcium stearate, 0.25 part of an antioxidant, 0.1 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average grain size of 100 meshes and the calcium carbonate powder with the average grain size of 400 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying wood flour at 100 ℃ for 2h, adding the wood flour into a container with a heating stirrer, stirring, adding an aluminate coupling agent in a corresponding weight part under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 90 ℃, adding polyethylene glycol, reacting for 40min, filtering, drying the filtrate at 60 ℃ for 6h, grinding and screening to obtain active calcium carbonate powder with the particle size of 400 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 5min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 150 ℃, controlling the temperature of a die head to be 180 ℃, and obtaining modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 180 ℃, controlling the temperature of a die head to be 190 ℃, and sizing through a flat die to obtain the plastic-wood board.
Example 2
The plastic-wood board comprises the following raw materials in parts by weight: 200 parts of wood powder, 50 parts of calcium carbonate powder, 40 parts of kaolin powder, 2 parts of graphene, 6 parts of an aluminate coupling agent, 50 parts of maleic anhydride grafted plastic particles, 50 parts of plastic particles, 0.7 part of calcium stearate, 0.3 part of an antioxidant, 0.5 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 60 meshes and the calcium carbonate powder with the average particle size of 200 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying wood flour at 100 ℃ for 4h, adding the wood flour into a container with a heating stirrer, stirring, adding an aluminate coupling agent in a corresponding weight part under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 80 ℃, adding polyethylene glycol, reacting for 60min, filtering, drying the filtrate at 70 ℃ for 9h, grinding and screening to obtain active calcium carbonate powder with the particle size of 200 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 10min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 200 ℃, and controlling the temperature of a die head to be 240 ℃ to obtain modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 200 ℃, controlling the temperature of a die head to be 210 ℃, and sizing through a flat die to obtain the plastic-wood board.
Example 3
The plastic-wood board comprises the following raw materials in parts by weight: 150 parts of wood powder, 45 parts of calcium carbonate powder, 35 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 45 parts of maleic anhydride grafted plastic particles, 45 parts of plastic particles, 0.7 part of calcium stearate, 0.3 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 80 meshes and the calcium carbonate powder with the average particle size of 300 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying the wood flour at 100 ℃ for 3h, adding the wood flour into a container with a heating stirrer, stirring, adding the corresponding parts by weight of aluminate coupling agent under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 90 ℃, adding polyethylene glycol, reacting for 50min, filtering, drying the filtrate at 70 ℃ for 5h, grinding and screening to obtain active calcium carbonate powder with the particle size of 300 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 8min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 180 ℃, controlling the temperature of a die head to be 210 ℃ and obtaining modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 180 ℃, controlling the temperature of a die head to be 200 ℃, and sizing through a flat die to obtain the plastic-wood board.
Example 4
The plastic-wood board comprises the following raw materials in parts by weight: 120 parts of wood powder, 30 parts of calcium carbonate powder, 25 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 40 parts of maleic anhydride grafted plastic particles, 40 parts of plastic particles, 0.6 part of calcium stearate, 0.28 part of an antioxidant, 0.3 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 90 meshes and the calcium carbonate powder with the average particle size of 300 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying wood flour at 100 ℃ for 4h, adding the wood flour into a container with a heating stirrer, stirring, adding an aluminate coupling agent in a corresponding weight part under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 80 ℃, adding polyethylene glycol, reacting for 40min, filtering, drying the filtrate at 70 ℃ for 5h, grinding and screening to obtain active calcium carbonate powder with the particle size of 300 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 7min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 200 ℃, and controlling the temperature of a die head to be 240 ℃ to obtain modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 200 ℃, controlling the temperature of a die head to be 210 ℃, and sizing through a flat die to obtain the plastic-wood board.
Example 5
The plastic-wood board comprises the following raw materials in parts by weight: 180 parts of wood powder, 48 parts of calcium carbonate powder, 38 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 48 parts of maleic anhydride grafted plastic particles, 48 parts of plastic particles, 0.65 part of calcium stearate, 0.28 part of an antioxidant, 0.5 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 40 meshes and the calcium carbonate powder with the average particle size of 200 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying wood flour at 100 ℃ for 4h, adding the wood flour into a container with a heating stirrer, stirring, adding an aluminate coupling agent in a corresponding weight part under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 80 ℃, adding polyethylene glycol, reacting for 30min, filtering, drying the filtrate at 60 ℃ for 5h, grinding and screening to obtain active calcium carbonate powder with the particle size of 200 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 10min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 150 ℃, controlling the temperature of a die head to be 180 ℃, and obtaining modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 180 ℃, controlling the temperature of a die head to be 190 ℃, and sizing through a flat die to obtain the plastic-wood board.
Example 6
The plastic-wood board comprises the following raw materials in parts by weight: 100 parts of wood powder, 32 parts of calcium carbonate powder, 28 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 35 parts of maleic anhydride grafted plastic particles, 35 parts of plastic particles, 0.45 part of calcium stearate, 0.25 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 60 meshes and the calcium carbonate powder with the average particle size of 200 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying wood flour at 100 ℃ for 2h, adding the wood flour into a container with a heating stirrer, stirring, adding an aluminate coupling agent in a corresponding weight part under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 90 ℃, adding polyethylene glycol, reacting for 55min, filtering, drying the filtrate at 60 ℃ for 8h, grinding and screening to obtain active calcium carbonate powder with the particle size of 200 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 6min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 160 ℃, and controlling the temperature of a die head to be 180 ℃ to obtain modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 185 ℃, controlling the temperature of a die head to be 200 ℃, and sizing through a flat die to obtain the plastic-wood board.
Example 7
The plastic-wood board comprises the following raw materials in parts by weight: 140 parts of wood powder, 38 parts of calcium carbonate powder, 28 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 45 parts of maleic anhydride grafted plastic particles, 45 parts of plastic particles, 0.35 part of calcium stearate, 0.25 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 80 meshes and the calcium carbonate powder with the average particle size of 300 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying wood flour at 100 ℃ for 4h, adding the wood flour into a container with a heating stirrer, stirring, adding an aluminate coupling agent in a corresponding weight part under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 80 ℃, adding polyethylene glycol, reacting for 50min, filtering, drying the filtrate at 70 ℃ for 9h, grinding and screening to obtain active calcium carbonate powder with the particle size of 300 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 6min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 150 ℃, and controlling the temperature of a die head to be 220 ℃ to obtain modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 190 ℃, controlling the temperature of a die head to be 200 ℃, and sizing through a flat die to obtain the plastic-wood board.
Example 8
The plastic-wood board comprises the following raw materials in parts by weight: 160 parts of wood powder, 40 parts of calcium carbonate powder, 35 parts of kaolin powder, 2 parts of graphene, 6 parts of an aluminate coupling agent, 46 parts of maleic anhydride grafted plastic particles, 46 parts of plastic particles, 0.65 part of calcium stearate, 0.3 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
A preparation method of a plastic-wood board comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 90 meshes and the calcium carbonate powder with the average particle size of 400 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying the wood flour at 100 ℃ for 3h, adding the wood flour into a container with a heating stirrer, stirring, adding the corresponding parts by weight of aluminate coupling agent under the condition that the temperature is controlled at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 80 ℃, adding polyethylene glycol, reacting for 40min, filtering, drying the filtrate at 60 ℃ for 8h, grinding and screening to obtain active calcium carbonate powder with the particle size of 400 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 6min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 200 ℃, and controlling the temperature of a die head to be 190 ℃ to obtain modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 200 ℃, controlling the temperature of a die head to be 210 ℃, and sizing through a flat die to obtain the plastic-wood board.
The effect of example 1 will be described below by tests, the test results of which are as follows: the static bending strength is 38.73MPa, the Shore hardness is 70D, and the impact strength is 23.04KJ/m2Water absorption thickness expansion rate: 0.35%, corrosion resistance: and 5, grade.
The invention has the beneficial effects that: the board prepared by the invention has the physical properties similar to those of a common board, is easy to drill, cut and nail, has smooth and flat surface and high hardness, maintains the rigidity of the board, has good toughness, cannot deform after being pressed by high strength, resists bending, compression and impact; the waterproof and anti-corrosion paint has good weather resistance, does not deform, delaminate and expand due to sun and rain, does not contain formaldehyde, has good flame retardance, and can be recycled; when the building board is used as a building board, the building board is easy to demould, does not need to be brushed with a demoulding agent, does not absorb water during grouting, has good maintenance effect, smooth demoulding, does not need secondary plastering, can be widely developed and used in expressways, pipe gallery projects and high-rise buildings, and effectively solves the problems of low work efficiency and high loss of the traditional common board.
Claims (10)
1. A plastic-wood board is characterized in that: the plastic-wood board comprises the following raw materials in parts by weight: 100-200 parts of wood powder, 30-50 parts of calcium carbonate powder, 25-40 parts of kaolin powder, 1-2 parts of graphene, 4-6 parts of an aluminate coupling agent, 20-50 parts of maleic anhydride grafted plastic particles, 20-50 parts of plastic particles, 0.45-0.7 part of calcium stearate, 0.25-0.3 part of an antioxidant, 0.1-0.5 part of polyethylene glycol and the balance of water.
2. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 100 parts of wood powder, 30 parts of calcium carbonate powder, 25 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 20 parts of maleic anhydride grafted plastic particles, 20 parts of plastic particles, 0.45 part of calcium stearate, 0.25 part of an antioxidant, 0.1 part of polyethylene glycol and the balance of water.
3. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 200 parts of wood powder, 50 parts of calcium carbonate powder, 40 parts of kaolin powder, 2 parts of graphene, 6 parts of an aluminate coupling agent, 50 parts of maleic anhydride grafted plastic particles, 50 parts of plastic particles, 0.7 part of calcium stearate, 0.3 part of an antioxidant, 0.5 part of polyethylene glycol and the balance of water.
4. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 150 parts of wood powder, 45 parts of calcium carbonate powder, 35 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 45 parts of maleic anhydride grafted plastic particles, 45 parts of plastic particles, 0.7 part of calcium stearate, 0.3 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
5. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 120 parts of wood powder, 30 parts of calcium carbonate powder, 25 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 40 parts of maleic anhydride grafted plastic particles, 40 parts of plastic particles, 0.6 part of calcium stearate, 0.28 part of an antioxidant, 0.3 part of polyethylene glycol and the balance of water.
6. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 180 parts of wood powder, 48 parts of calcium carbonate powder, 38 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 48 parts of maleic anhydride grafted plastic particles, 48 parts of plastic particles, 0.65 part of calcium stearate, 0.28 part of an antioxidant, 0.5 part of polyethylene glycol and the balance of water.
7. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 100 parts of wood powder, 32 parts of calcium carbonate powder, 28 parts of kaolin powder, 1 part of graphene, 4 parts of an aluminate coupling agent, 35 parts of maleic anhydride grafted plastic particles, 35 parts of plastic particles, 0.45 part of calcium stearate, 0.25 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
8. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 140 parts of wood powder, 38 parts of calcium carbonate powder, 28 parts of kaolin powder, 2 parts of graphene, 5 parts of an aluminate coupling agent, 45 parts of maleic anhydride grafted plastic particles, 45 parts of plastic particles, 0.35 part of calcium stearate, 0.25 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
9. The plastic-wood panel according to claim 1, wherein: the plastic-wood board comprises the following raw materials in parts by weight: 160 parts of wood powder, 40 parts of calcium carbonate powder, 35 parts of kaolin powder, 2 parts of graphene, 6 parts of an aluminate coupling agent, 46 parts of maleic anhydride grafted plastic particles, 46 parts of plastic particles, 0.65 part of calcium stearate, 0.3 part of an antioxidant, 0.4 part of polyethylene glycol and the balance of water.
10. A method for preparing a plastic-wood board based on any one of claims 1 to 9, which is characterized in that: the method comprises the following steps:
the method comprises the following steps: screening the wood powder and the calcium carbonate powder by using a screen to obtain the wood powder with the average particle size of 40-100 meshes and the calcium carbonate powder with the average particle size of 200-400 meshes;
step two: weighing the raw materials according to the weight parts of the raw materials in the formula;
step three: drying the wood flour at 100 ℃ for 2-4 h, adding the wood flour into a container with a heating stirrer, stirring, adding the corresponding parts by weight of aluminate coupling agent at 120 ℃, and uniformly stirring to obtain coupling agent modified wood flour;
step four: uniformly mixing calcium carbonate powder with water, heating to 80-90 ℃, adding polyethylene glycol, reacting for 30-60 min, filtering, drying the filtrate at 60-70 ℃ for 5-9 h, grinding, and screening to obtain active calcium carbonate powder with the particle size of 200-400 meshes;
step five: placing the plastic particles, the maleic anhydride grafted plastic particles, the activated calcium carbonate powder and the calcium stearate in a mechanical stirring kettle, stirring for 5-10 min, controlling the temperature of a cylinder of an extrusion granulating and extruding machine to be 150-200 ℃, and controlling the temperature of a die head to be 180-240 ℃ to obtain modified plastic particles;
step six: placing coupling agent modified wood powder, modified plastic particles, kaolin powder, graphene and an antioxidant in a mechanical stirring kettle, stirring for 10min, uniformly mixing, performing melt blending and extrusion by using an extruder, controlling the temperature of a cylinder of the extruder to be 180-200 ℃, controlling the temperature of a die head to be 190-210 ℃, and sizing through a flat die to obtain the plastic-wood board.
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| CN202110539360.9A CN113214670A (en) | 2021-05-18 | 2021-05-18 | Plastic-wood board and preparation method thereof |
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Application publication date: 20210806 |