CN111234551A - On-line embossing high-strength anti-slip plastic-wood composite material plate and preparation method thereof - Google Patents
On-line embossing high-strength anti-slip plastic-wood composite material plate and preparation method thereof Download PDFInfo
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- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/002—Combinations of extrusion moulding with other shaping operations combined with surface shaping
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
- B29C59/043—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for profiled articles
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Abstract
An on-line embossing high-strength anti-skid plastic-wood composite material plate is prepared from high-density polyethylene plastic particles, a substituted benzamide nucleating agent TMB-5, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene; uniformly mixing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5, and melting and extruding the mixture to form a crystalline plastic material flow; uniformly mixing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene, and performing melt extrusion to obtain a plastic wood stream; the two material flows are uniformly mixed in a mixing machine head and extruded to form a plastic-wood plate; and rolling and embossing twice at a certain temperature. The invention has the advantages of convenient production, high mechanization degree of the production process, less required labor force, low cost, environmental protection, strong wood texture, no deformation, water resistance, aging resistance, no mildew, no cracking, no worm damage, strong repairability, good stability and skid resistance.
Description
Technical Field
The invention relates to a plastic-wood composite material, in particular to an online embossing high-strength anti-skid plastic-wood composite material plate and a preparation method thereof.
Background
People have affinity to wood, but the wood also has the defects of easy shrinkage and cracking, easy deformation when meeting water, easy mildew when meeting moisture and easy combustion when meeting fire, and if the wood is used indoors, toxic and harmful gases such as formaldehyde, VOC and the like can cause indoor pollution. The invention discloses a novel board which is necessary to replace wood. The plastic-wood composite material is one of the plastic-wood composite materials which are processed by adopting an advanced process and take plant fibers such as wood powder, agricultural straw powder and the like and plastics as main raw materials.
The plastic-wood composite material has wide raw material source, is environment-friendly, renewable and recyclable. It has the processing performance similar to that of wood, and is anticorrosive, anti-ageing, less damaged by worm and less fungus growing, and the density of the plastic-wood material may be changed by adding different assistants. Meanwhile, the plastic-wood composite material has the characteristics of wood appearance, higher hardness than a plastic product, homogeneous material, stable size compared with wood, difficult crack generation and the like; it has the processability of thermoplastic plastics, and has small abrasion to equipment in the production process; toxic chemical substances are not required for treatment, and formaldehyde is not contained; can be repeatedly used and recycled after being discarded, and is beneficial to environmental protection and the like.
The application range of plastic-wood composite materials is rapidly expanding, and related products are floor boards, wall boards, skirtboards, gallery frames, handrails, guardrails, racks, goods shelves and the like. The plastic-wood product has a great limitation in the production process that the molded surface is smooth, the pattern is single, the natural grain of wood is not generated, and the anti-skid effect is poor, so that the surface embossing or the modification treatment is required. The surface of the plastic-wood composite material is modified by various methods, including surface coating, surface printing and the like, which are relatively complex, so that the manufacturing cost of the plastic-wood composite material is increased, and a good anti-skid effect is not generated. In contrast, the surface embossing is much simpler, and the surface embossing adopts a metal roller with patterns to extrude the surface of the plastic wood, so that the patterns which are opposite to the concave-convex patterns on the surface of the metal roller are left on the surface of the plastic wood product, thereby forming the patterns similar to the surface of the wood and improving the anti-skid performance of the plastic wood product. However, in the embossing of the plastic-wood products on the market, after the plastic-wood plates are extruded and cooled to room temperature, the plastic-wood plates are moved to a rolling operation table, the plastic-wood plates are conveyed between two rollers, and the surfaces of the plastic-wood plates are extruded by high pressure. Although the operation can leave grains on the surface of the plastic-wood board, the operation has the defects, the most outstanding two points are that the rolling pressure of the roller is required to be very high, otherwise clear grains cannot be left on the surface of the plastic-wood board, so the used pressing roller and the bracket thereof are required to bear very high pressure, the requirements on the material performance of the manufacturing materials of the pressing roller and the bracket thereof are higher, and the manufacturing cost of the pressing roller and the bracket thereof is higher; secondly, the plastic-wood board is cooled and shaped, although the grains can be generated on the surface of the plastic-wood board by the external force of the compression roller, the stability of the grains is poor, after the compression roller is removed under high pressure, the generated grains are easy to deform and recover due to the relaxation effect, and the grains are gradually blurred or even disappear after a period of use, so that the decorative and anti-skid effects of the plastic-wood board are lost.
In order to eliminate the defects, it is necessary to improve the traditional plastic-wood composite material plate and the production process thereof, improve the strength, reduce the transportation, installation and maintenance costs, improve the embossing effect and the anti-skid performance, and expand the application range.
Disclosure of Invention
The invention aims at the above purpose to provide an online embossing high-strength anti-skid plastic-wood composite material plate and a preparation method thereof.
An on-line embossing high-strength anti-skid plastic-wood composite material plate is prepared from high-density polyethylene plastic particles, a substituted benzamide nucleating agent TMB-5, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene; uniformly mixing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5, and performing melt extrusion by using an extruder to form a crystalline plastic material flow; uniformly mixing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene, and performing melt extrusion by using an extruder to form a plastic wood stream; uniformly mixing the crystalline plastic material flow and the plastic wood material flow in a mixing machine head, and extruding to form a plastic wood composite material plate; and rolling and embossing twice at a certain temperature to obtain the online embossed high-strength anti-skid plastic-wood composite material plate.
The average grain size of the oily wood powder is 40-160 meshes.
The average particle size of the calcium carbonate powder is 800-1200 meshes.
The average specific surface area of the modified graphene is 180-280 m2/g。
The invention relates to a preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate, which comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 10-20: 0.2-0.4: 0.1-0.5: 3-5, adding the graphene into the dimethylformamide, performing ultrasonic dispersion for 1-2 hours, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, performing ultrasonic treatment for 10-20 minutes again, reacting for 40-50 hours at 120-130 ℃, adding the ethanol, standing for 48-60 hours, filtering, washing the obtained precipitate, performing vacuum drying for 36-48 hours at 55-65 ℃, and screening to obtain modified graphene;
(2) weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran respectively according to the weight ratio of 100: 10-16: 3-4: 4-6: 0.5-0.7: 0.6-1: 16-20, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 60-80 ℃, preserving the heat for 30-60 min, cooling, and screening to obtain oily wood flour;
(3) respectively weighing high-density polyethylene plastic particles and a substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.3-0.7, uniformly mixing, and performing melt extrusion by using an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 160-172 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 100-150: 0.3-0.7: 30-50: 1.5-2.5: 3-7: 2-4, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic wood material flow, wherein the extrusion temperature is 166-172 ℃;
(5) the method comprises the following steps of (1) enabling a crystalline plastic material flow and a plastic wood flow to pass through a mixing machine head, enabling the temperature of the mixing machine head to be 162-172 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood flow, controlling the weight ratio of the crystalline plastic material flow and the plastic wood flow to enter the mixing machine head within unit time to be 1: 5-7, uniformly mixing the two materials in the mixing machine head, and extruding to form the plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.03-0.07 MPa, after rolling, the plastic-wood composite material plate is cooled to 80-90 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.1-0.2 MPa for the second time;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
The on-line embossing high-strength anti-skid plastic-wood composite material plate is convenient to produce and manufacture, high in mechanization degree in the production process, low in required labor force and low in production cost. Compared with the common plastic plate, the online embossing high-strength anti-skid plastic-wood composite plate has the advantages that the used plastic amount is reduced, the environment is more friendly, the wood texture is stronger, the product cost is low, the aging and color change are not easy, and the warping and deformation are avoided; compared with wood plates, the on-line embossing high-strength anti-slip plastic-wood composite material plate has the advantages of good waterproof performance, aging resistance, no mildew, no cracking, no worm damage and strong repairability; the utility model provides an online embossing high strength antiskid plastic-wood composite panel compares with other embossing plastic-wood composite panels, and panel is hot online embossing, need not later stage secondary operation, and production efficiency is high, and the stereovision that can produce the line simultaneously is strong, and the line gets off along with moulding wooden panel cools down gradually in process of production and stereotypes, and stability is good in the later stage use, can not cause the line to disappear because of deformation resumes, and the antiskid effect is more superior.
Detailed Description
The following embodiments are used to specifically describe an on-line embossed high-strength anti-slip plastic-wood composite plate and a preparation method thereof.
An on-line embossing high-strength anti-skid plastic-wood composite material plate is prepared from high-density polyethylene plastic particles, a substituted benzamide nucleating agent TMB-5, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene; uniformly mixing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5, and performing melt extrusion by using an extruder to form a crystalline plastic material flow; uniformly mixing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene, and performing melt extrusion by using an extruder to form a plastic wood stream; uniformly mixing the crystalline plastic material flow and the plastic wood material flow in a mixing machine head, and extruding to form a plastic wood composite material plate; and rolling and embossing twice at a certain temperature to obtain the online embossed high-strength anti-skid plastic-wood composite material plate.
Example 1
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 15: 0.3: 4, adding the graphene into the dimethylformamide, carrying out ultrasonic dispersion for 1.5h, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, carrying out ultrasonic treatment for 15min again, reacting for 45h at 125 ℃, adding the ethanol,standing for 54h, filtering, washing the obtained precipitate, vacuum drying at 60 ℃ for 42h, and sieving to obtain modified graphene (with average specific surface area of 230 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 13: 3.5: 5: 0.6: 0.8: 18, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 70 ℃, preserving the temperature for 45min, cooling and screening to obtain oily wood flour (the average particle size is 100 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.5, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 166 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (the average particle size is 1000 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 125: 0.5: 40: 2: 5: 3, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic wood material flow, wherein the extrusion temperature is 169 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, controlling the temperature of the mixing machine head to be 167 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 6, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.05MPa, the plastic-wood composite material plate is air-cooled to 85 ℃ after being rolled, and the plastic-wood composite material plate is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.15 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 2
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 10: 0.2: 0.1: 3, adding the graphene into the dimethylformamide, carrying out ultrasonic dispersion for 1h, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, carrying out ultrasonic treatment for 10min again, reacting for 40h at 120 ℃, adding the ethanol, standing for 48h, filtering, washing the obtained precipitate, carrying out vacuum drying for 36h at 55 ℃, and screening to obtain modified graphene (the average specific surface area is 180 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 10: 3: 4: 0.5: 0.6: 16, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 60 ℃, preserving the temperature for 30min, cooling and screening to obtain oily wood flour (the average particle size is 40 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.3, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 160 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (with the average particle size of 800 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 0.3: 30: 1.5: 3: 2, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic-wood material flow, wherein the extrusion temperature is 166 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, wherein the temperature of the mixing machine head is 162 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 5, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.03MPa, the plastic-wood composite material plate is air-cooled to 80 ℃ after being rolled, and the plastic-wood composite material plate is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.1 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 3
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 20: 0.4: 0.5: 5, adding the graphene into the dimethylformamide, carrying out ultrasonic dispersion for 2 hours, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, carrying out ultrasonic treatment for 20 minutes again, reacting for 50 hours at 130 ℃, adding the ethanol, standing for 60 hours, filtering, washing the obtained precipitate, carrying out vacuum drying for 48 hours at 65 ℃, and screening to obtain modified graphene (the average specific surface area is 280 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 16: 4: 6: 0.7: 1: 20, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 80 ℃, preserving the temperature for 60min, cooling, and screening to obtain oily wood flour (the average particle size is 160 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.7, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 172 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (with the average particle size of 1200 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 150: 0.7: 50: 2.5: 7: 4, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic-wood material flow, wherein the extrusion temperature is 172 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, wherein the temperature of the mixing machine head is 172 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 7, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.07MPa, after rolling, the plastic-wood composite material plate is air-cooled to 90 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.2 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 4
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 10: 0.3: 0.5: 3, adding the graphene into the dimethylformamide, ultrasonically dispersing for 1.5h, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, ultrasonically treating for 20min again, reacting for 45h at 120 ℃, adding the ethanol, standing for 60h, filtering, washing the obtained precipitate, vacuum drying for 42h at 55 ℃, and sieving to obtain modified graphene (the average specific surface area is 280 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 10: 3.5: 6: 0.5: 0.8: 20, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 60 ℃, preserving the temperature for 45min, cooling and screening to obtain oily wood flour (the average particle size is 160 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.3, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 166 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (with the average particle size of 1200 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 150: 0.3: 40: 2.5: 3, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic-wood material flow, wherein the extrusion temperature is 166 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, controlling the temperature of the mixing machine head to be 167 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 7, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.03MPa, after rolling, the plastic-wood composite material plate is air-cooled to 85 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.2 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 5
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) weighing graphite according to the weight ratio of 1: 15: 0.4: 0.1: 4Adding graphene into dimethylformamide, ultrasonically dispersing for 2h, then adding triethylene tetramine and dicyclohexylcarbodiimide, ultrasonically treating for 10min again, reacting for 50h at 125 ℃, adding ethanol, standing for 48h, filtering, washing the obtained precipitate, vacuum drying for 48h at 60 ℃, and screening to obtain modified graphene (the average specific surface area is 180 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 13: 4: 0.6: 1: 16, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 70 ℃, preserving the temperature for 60min, cooling, and screening to obtain oily wood flour (the average particle size is 40 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.5, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 172 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (with the average particle size of 800 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 0.5: 50: 1.5: 5: 4, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic-wood material flow, wherein the extrusion temperature is 169 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, wherein the temperature of the mixing machine head is 172 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 5, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.05MPa, the plastic-wood composite material plate is air-cooled to 90 ℃ after being rolled, and the plastic-wood composite material plate is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.1 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 6
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 20: 0.2: 0.3: 5, adding the graphene into the dimethylformamide, carrying out ultrasonic dispersion for 1h, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, carrying out ultrasonic treatment for 15min again, reacting for 40h at 130 ℃, adding the ethanol, standing for 54h, filtering, washing the obtained precipitate, carrying out vacuum drying for 36h at 65 ℃, and screening to obtain modified graphene (the average specific surface area is 230 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 16: 3: 5: 0.7: 0.6: 18, respectively, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 80 ℃, preserving the temperature for 30min, cooling and screening to obtain oily wood flour (the average particle size is 100 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.7, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 160 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (the average particle size is 1000 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 125: 0.7: 30: 2: 7: 2, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic wood material flow, wherein the extrusion temperature is 172 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, wherein the temperature of the mixing machine head is 162 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 6, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.07MPa, after rolling, the plastic-wood composite material plate is air-cooled to 80 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.15 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 7
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 10: 0.2: 0.5: 5, adding the graphene into the dimethylformamide, ultrasonically dispersing for 1.5h, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, ultrasonically treating for 15min again, reacting for 40h at 120 ℃, adding the ethanol, standing for 60h, filtering, washing the obtained precipitate, vacuum drying for 42h at 65 ℃, and sieving to obtain modified graphene (the average specific surface area is 230 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 13: 3.5: 6: 0.7: 0.6: 16, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 70 ℃, preserving the temperature for 45min, cooling and screening to obtain oily wood flour (the average particle size is 160 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.7, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 160 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (with the average particle size of 1200 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 0.3: 30: 2: 5: 4, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic wood material flow, wherein the extrusion temperature is 166 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, controlling the temperature of the mixing machine head to be 167 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 7, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.07MPa, after rolling, the plastic-wood composite material plate is air-cooled to 85 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.1 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 8
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 10: 0.3: 0.5: 4, adding the graphene into the dimethylformamide, carrying out ultrasonic dispersion for 2 hours, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, carrying out ultrasonic treatment for 10 minutes again, reacting for 40 hours at 130 ℃, adding the ethanol, standing for 54 hours, filtering, washing the obtained precipitate, and carrying out ultrasonic treatment on the precipitateVacuum drying at 65 ℃ for 42h, and sieving to obtain modified graphene (with average specific surface area of 180 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 16: 3: 5: 0.5: 0.8: 20, respectively, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 70 ℃, preserving the temperature for 30min, cooling and screening to obtain oily wood flour (the average particle size is 160 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.3, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 172 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (average particle size is 1000 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 125: 0.7: 30: 1.5: 7: 3, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic-wood material flow, wherein the extrusion temperature is 166 ℃;
(5) passing the crystalline plastic material flow and the plastic wood material flow through a mixing machine head, wherein the temperature of the mixing machine head is 172 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood material flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood material flow in the mixing machine head to be 1: 6, uniformly mixing the two material flows in the mixing machine head, and extruding to form a plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.03MPa, after rolling, the plastic-wood composite material plate is air-cooled to 90 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.1 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
Example 9
A preparation method of an online embossing high-strength anti-skid plastic-wood composite material plate comprises the following steps:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 12: 0.22: 0.4: 3.5, adding the graphene into the dimethylformamide, carrying out ultrasonic dispersion for 1.2h, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, carrying out ultrasonic treatment for 16min again, reacting for 46h at 126 ℃, adding the ethanol, standing for 55h, filtering, washing the obtained precipitate, carrying out vacuum drying for 40h at 56 ℃, and screening to obtain modified graphene (the average specific surface area is 200 m)2/g)；
(2) Weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran according to the weight ratio of 100: 12: 3.4: 4.6: 0.57: 0.7: 19, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 68 ℃, preserving the heat for 36min, cooling and screening to obtain oily wood flour (the average particle size is 60 meshes);
(3) respectively weighing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.6, uniformly mixing, and performing melt extrusion by adopting an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 163 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder (with the average particle size of 900 meshes), terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 110: 0.4: 34: 1.8: 6: 2.4, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic wood stream, wherein the extrusion temperature is 168 ℃;
(5) passing the crystalline plastic material flow and the plastic wood flow through a mixing machine head, wherein the temperature of the mixing machine head is 168 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood flow, controlling the weight ratio of the crystalline plastic material flow to the plastic wood flow in the mixing machine head to be 1: 5.7, uniformly mixing the two material flows in the mixing machine head, and extruding to form the plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.04MPa, after rolling, the plastic-wood composite material plate is air-cooled to 84 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.14 MPa;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
The effect of example 1 of the present invention is demonstrated by examination,
the static bending strength, the Shore hardness and the impact strength of the on-line embossed high-strength anti-slip plastic-wood composite material plate are respectively detected, 10 patterns are simultaneously selected and marked, the line depth of each position is respectively measured, after the plate is placed at room temperature for 6 months, the line depth is measured again at the same line position, the line depth retention rate of each pattern is calculated, and the line depth retention rate of 10 patterns is taken as the line depth retention rate of the measured plate. The detection results are as follows:
static bending strength: 36.72MPa, Shore hardness: 60D, impact strength 20.03kJ/m2The pattern depth retention rate was 98.28%.
The results show that the static bending strength and the shore hardness of the on-line embossed high-strength antiskid plastic-wood composite material plate obviously exceed the requirements of the forestry industry standard LY/T1613-2004 of the people's republic of China, and the on-line embossed high-strength antiskid plastic-wood composite material plate has high impact strength and good grain retention rate.
Claims (5)
1. An on-line embossing high-strength anti-skid plastic-wood composite material plate is characterized by being prepared from high-density polyethylene plastic particles, a substituted benzamide nucleating agent TMB-5, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene; uniformly mixing high-density polyethylene plastic particles and the substituted benzamide nucleating agent TMB-5, and performing melt extrusion by using an extruder to form a crystalline plastic material flow; uniformly mixing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene, and performing melt extrusion by using an extruder to form a plastic wood stream; uniformly mixing the crystalline plastic material flow and the plastic wood material flow in a mixing machine head, and extruding to form a plastic wood composite material plate; and rolling and embossing twice at a certain temperature to obtain the online embossed high-strength anti-skid plastic-wood composite material plate.
2. The on-line embossed high-strength anti-slip plastic-wood composite material plate as claimed in claim 1, wherein the average particle size of the oily wood flour is 40-160 mesh.
3. The on-line embossed high-strength anti-slip plastic-wood composite material plate as claimed in claim 1, wherein the calcium carbonate powder has an average particle size of 800-1200 meshes.
4. The on-line embossed high-strength anti-slip plastic-wood composite material plate as claimed in claim 1, wherein the average specific surface area of the modified graphene is 180-280 m2/g。
5. The preparation method of the on-line embossed high-strength anti-slip plastic-wood composite material plate according to claim 1, characterized in that the preparation process comprises:
(1) respectively weighing graphene, dimethylformamide, triethylene tetramine, dicyclohexylcarbodiimide and ethanol according to the weight ratio of 1: 10-20: 0.2-0.4: 0.1-0.5: 3-5, adding the graphene into the dimethylformamide, performing ultrasonic dispersion for 1-2 hours, then adding the triethylene tetramine and the dicyclohexylcarbodiimide, performing ultrasonic treatment for 10-20 minutes again, reacting for 40-50 hours at 120-130 ℃, adding the ethanol, standing for 48-60 hours, filtering, washing the obtained precipitate, performing vacuum drying for 36-48 hours at 55-65 ℃, and screening to obtain modified graphene;
(2) weighing wood flour, styrene, acrylic acid, methyl methacrylate, sodium bisulfite, azobisisobutyronitrile and tetrahydrofuran respectively according to the weight ratio of 100: 10-16: 3-4: 4-6: 0.5-0.7: 0.6-1: 16-20, uniformly mixing the styrene, the acrylic acid, the methyl methacrylate, the sodium bisulfite, the azobisisobutyronitrile and the tetrahydrofuran, uniformly atomizing the wood flour, heating the atomized wood flour to 60-80 ℃, preserving the heat for 30-60 min, cooling, and screening to obtain oily wood flour;
(3) respectively weighing high-density polyethylene plastic particles and a substituted benzamide nucleating agent TMB-5 according to the weight ratio of 100: 0.3-0.7, uniformly mixing, and performing melt extrusion by using an extruder to form a crystalline plastic material flow, wherein the extrusion temperature is 160-172 ℃;
(4) respectively weighing high-density polyethylene plastic particles, oily wood powder, modified graphene, calcium carbonate powder, terpene resin, butyl stearate and oxidized polyethylene according to the weight ratio of 100: 100-150: 0.3-0.7: 30-50: 1.5-2.5: 3-7: 2-4, uniformly mixing, and performing melt extrusion by using an extruder to form a plastic wood material flow, wherein the extrusion temperature is 166-172 ℃;
(5) the method comprises the following steps of (1) enabling a crystalline plastic material flow and a plastic wood flow to pass through a mixing machine head, enabling the temperature of the mixing machine head to be 162-172 ℃, adjusting the extrusion rates of the crystalline plastic material flow and the plastic wood flow, controlling the weight ratio of the crystalline plastic material flow and the plastic wood flow to enter the mixing machine head within unit time to be 1: 5-7, uniformly mixing the two materials in the mixing machine head, and extruding to form the plastic wood composite material plate;
(8) the hot plastic-wood composite material plate is rolled and embossed by a first pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.03-0.07 MPa, after rolling, the plastic-wood composite material plate is cooled to 80-90 ℃, and then is rolled and embossed by a second pair of embossing rollers which are symmetrically arranged, the rolling pressure is 0.1-0.2 MPa for the second time;
(9) and after rolling, cooling the plastic-wood composite material plate to room temperature to obtain the on-line embossed high-strength anti-skid plastic-wood plate.
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