134 results about "Wood flour" patented technology

The invention discloses a high-weatherability sound insulation wood plastic wallboard and a preparation method thereof, the high-weatherability sound insulation wood plastic wallboard comprises the following raw materials by weight: 30-40 parts of wood flour or plant fiber, 25-35 parts of a sound insulation functional filler, 35-45 parts of high density polyethylene, 2-2.5 parts of maleic anhydride grafted high density polyethylene, 1-1.5 parts of stearic acid, 3-4.5 parts of a weatherability auxiliary agent, and 1-1.5 parts of azodicarbonamide. The problems of cracking, deformation and the like caused by moisture absorption expansion are relieved by optimizing the proportion and compatibility of the wood flour and the plastic, and then the problems of weather resistance and sound insulation of the wallboard outdoors are solved by filling the porous sound absorption material.

The utility model discloses a plastic wood product production system device which comprises a main material storage and conveying area, an auxiliary material feeding and weighing area and at least one mixed material conveying, extruding and feeding area. A CaCO3 main material storage and conveying unit, a CaCO3 transition unit, two groups of PVC main material storage and conveying units and a wood powder main material storage and conveying unit are arranged in the main material storage and conveying area; a group of auxiliary material pouring bin dedusting and weighing units are arranged in the auxiliary material feeding and weighing area; a mixing unit, a mixture conveying unit and a mixture storage and extrusion feeding unit are arranged in the mixture conveying, extruding and feeding area. The device has the advantages of being efficient in operation, high in weighing precision, good in mixing effect, remarkable in energy conservation, environmentally friendly, high in automation degree and the like.

The invention discloses a green low-carbon wood-plastic composite material continuous production system and an energy consumption management method, and relates to the field of wood-plastic composite material production. The raw material pretreatment module is integrated with a wood powder precise drying device, a plastic recycling device and an auxiliary material proportioning device, and the water content and the recycling purity are controlled; the continuous mixing and plasticizing module adopts a conical double-screw extruder, multi-section temperature control, combined screws and double-layer heat preservation; the forming and shaping module comprises a self-adaptive runner mold, a gradient cooling system and an online detection device; the waste closed-loop utilization module collects dust under negative pressure, crushes leftover materials and modifies and recovers the leftover materials; the clean energy supply module is integrated with a photovoltaic system, a biomass gasification furnace, a ground source heat pump and an energy storage system; the intelligent energy consumption management and control module collects data in real time and optimizes energy consumption through an algorithm. According to the invention, the renewable energy utilization rate and the waste utilization rate are improved, the energy consumption and carbon emission are reduced, the product quality is guaranteed, green low-carbon continuous production is realized, and the industrial sustainable development is promoted.

The invention discloses a flame-retardant PVC (polyvinyl chloride) wood-plastic plate which is prepared from the following raw materials in parts by weight: 100 parts of SG-7 type PVC resin; 20-30 parts of modified wood powder; the composite flame retardant is composed of ammonium polyphosphate, aluminum hydroxide, molybdenum trioxide and zinc borate according to the weight ratio of 15: 20: 16: 4; the mass ratio of the aluminum-titanium composite coupling agent to the wood flour is 1: 100; 5-8 parts of a calcium-zinc stabilizer; the lubricant is composed of polyethylene wax, paraffin and calcium stearate according to the weight ratio of 1: 1: 1; and 5-10 parts of an acetyl butyl citrate plasticizer. The invention relates to the technical field of polymer composite materials, in particular to a flame-retardant PVC wood-plastic plate and a preparation method thereof.The flame-retardant PVC wood-plastic plate and the preparation method thereof have the remarkable advantages that due to a composite flame retardant, the oxygen index of the plate reaches 32.1%, the combustion performance reaches the UL94V-0 level, and the smoke density is reduced by 72.1%; the tensile strength, the impact strength and the bending strength are respectively improved by 339.6%, 59.1% and 179.5% when the wood powder is treated by the aluminum-titanium coupling agent; the extrusion temperature of 150-175 DEG C and the screw rotating speed of 12-18 r / min are accurately controlled, the problems of wood powder carbonization and flame retardant decomposition are avoided, and the quality consistency is guaranteed.

The invention relates to the technical field of sewage treatment, in particular to a biological enzyme-containing deodorizing and antibacterial composition for sewage treatment. The biological enzyme-containing deodorizing and antibacterial composition for sewage treatment is prepared from the following raw materials in parts by mass: 1 to 3 parts of a compound biological enzyme preparation, 5 to 15 parts of bamboo charcoal powder, 1 to 2 parts of chitosan, 1 to 3 parts of dopamine, 0.005 to 0.024 part of glutaraldehyde, 10 to 30 parts of bentonite, 1 to 5 parts of graphene, 1 to 3 parts of nano silicon dioxide, 10 to 20 parts of wood flour, 5 to 10 parts of sodium hydrogen sulfite and 1 to 5 parts of sodium carboxymethyl cellulose. 1-2 parts of polyacrylamide and 1-5 parts of a nonionic surfactant. The composition disclosed by the invention forms a synergistic effect, can remove most suspended matters and metal ions in sewage, can quickly catalyze and decompose organic matters into water-soluble small molecular compounds such as organic acid and alcohol, efficiently and remarkably reduces the contents of nitrogen and phosphorus in the sewage and purifies a water body.

The utility model relates to the technical field of wood processing, and discloses a dust collection device for a woodworking sliding table saw, which comprises a saw table and a dust collection component, a saw blade is arranged on the saw table, a supporting table is adjacently arranged on the outer side of the saw table, and the dust collection assembly is installed on the supporting table so that wood powder generated during saw blade operation can be adsorbed through the dust collection assembly. Compared with the prior art, the wood flour humidifying device has the following advantages and effects that when the saw bench is used for cutting, wind power is generated through the exhaust fan, wood flour can be sucked into the humidifying bin through the dust suction opening, wetted sponge can adsorb the wood flour so as to conduct dust removal treatment on the wood flour, meanwhile, the plate body can move through the rotating assembly and the synchronous block, and the wood flour can be humidified through the rotating assembly and the synchronous block. The sponge is driven to move, the contact area of the sponge and wood powder is increased, the wood powder adsorption treatment efficiency is improved, and meanwhile, the sponge can be conveniently washed subsequently for secondary use.

The invention provides a durable water-resistant low-cost guardrail wood-plastic composite material and a preparation method thereof, and belongs to the technical field of wood-plastic materials. The composite material is mainly formed by the low-cost wood-plastic core material and the complete wrapping coating, the plastic content in the core material formula is low, and the cost is low; and the coating layer is composed of a thermoplastic inner layer coating layer and a thermosetting outer layer coating layer. The content of polyethylene in the core material of the product is reduced, the use amount of wood flour is increased, and the effect of reducing the cost is achieved. Meanwhile, the inner layer adopts a special low-viscosity thermoplastic coating, the surface wetting and permeability of the wood-plastic core material are good, the finally formed inner layer coating is compact and complete, and on the basis of the inner layer coating, the thermosetting coating prepared by virtue of special modified resin and active diluting components is relatively good in toughness and water resistance after being cured and molded, so that the service life of the wood-plastic core material is prolonged. The mechanical property is excellent, and the static bending intensity performance of a final product is also obviously improved.

The invention belongs to the technical field of diaphragma juglandis extraction, and particularly relates to a high-activity diaphragma juglandis aqueous extract as well as a preparation method and application thereof. The preparation method of the high-activity diaphragma juglandis aqueous extract comprises the step of crushing diaphragma juglandis to obtain diaphragma juglandis powder. And mixing the diaphragma juglandis powder and distilled water according to a mass ratio of 1: (10-30), carrying out subcritical extraction at 120-180 DEG C for 30-60 minutes, collecting extract liquor, and filtering to obtain the diaphragma juglandis aqueous extract. Wherein after the subcritical extraction is finished, stirring is kept, condensate water is introduced, the temperature of the extraction liquid is reduced to the room temperature, and then the extraction liquid is collected. The preparation method of the high-activity diaphragma juglandis aqueous extract provided by the invention has the advantages of no solvent residue, short extraction time and high biological activity of the extract.

The application discloses a kind of preservative mildew-proof aging-resistant wood board and preparation method thereof, comprising: multi-walled carbon nanotube is added to oxidizing agent solution, is mixed sufficiently, oxidation reaction is carried out, and is cleaned using detergent;Antibacterial preservative and emulsifier are added to organic solvent and uniformly mixed, add to chitosan aqueous solution, while keeping sufficient stirring, centrifugal, precipitate, dry, obtain antibacterial preservative microcapsule;Multi-walled carbon nanotube and carboxylic acid derivative are stirred, filter, dry, add antibacterial preservative microcapsule, stir, and uniformly mixed with multi-walled carbon nanotube;The mixture before, wood powder, binder, additive and water are added to stirring kettle and stirred, put into plate mold, and heat solidification;Pressing, effectively enhance the performance and durability of antibacterial preservative, also increase the service life of wood board.

The present invention relates to the technical field of wood-plastic composites, and provides a PVC wood-plastic material having strong smoke suppression and flame retardancy, and a preparation method therefor. The PVC wood-plastic material comprises the following components in parts by weight: 70-100 parts of a PVC resin, 20-30 parts of wood powder, 20-30 parts of calcium carbonate, 15-20 parts of a smoke suppression material, 10-15 parts of a flame retardant, 1-6 parts of a foaming agent, 5-10 parts of a stabilizer, 1-2 parts of a coupling agent, 5-10 parts of a processing aid, and 1-4 parts of a lubricant, wherein the smoke suppression material comprises a molybdenum compound, ferrocene and an oxalate dihydrate in a mass ratio of 1:(0.5-1.5):(5-10). The preparation method comprises the end-capping modification of the wood powder and the preparation of the PVC wood-plastic material. The prepared PVC wood-plastic material has excellent flame retardancy and smoke suppression properties.

The invention discloses a corrosion-resistant and mildew-proof wood-plastic floor and a processing method thereof, and relates to the technical field of wood-plastic floors, the processing method comprises the following steps: carrying out refined pretreatment on wood powder to obtain fine wood powder meeting the requirements of particle size and dryness; the method comprises the following steps: pretreating a plastic base material through recycled polyethylene plastic particles, removing impurities and adjusting the particle size of the particles; an epoxy functional mildew preventive is synthesized in situ and is used for forming covalent bonding with a wood-plastic matrix subsequently; mixing the pretreated plastic base material, the wood flour and the epoxy functional mildew preventive in sequence to obtain a uniform material; bonding and plasticizing of the materials are achieved through a reactive extrusion process, and a molten profile is formed; carrying out on-line shaping and gradient cooling on a molten profile obtained by reactive extrusion, eliminating internal stress, and carrying out curing molding; and fixed-length cutting and finish machining are conducted on the sectional material subjected to gradient cooling and curing, and the finished corrosion-resistant and mildew-proof wood-plastic floor is obtained.

A kind of wood grain polypropylene composite material, by weight parts, including the following components: high fluidity polypropylene 45 parts;Metallocene low isotacticity polypropylene 5-15 parts;Wood powder 10-50 parts;Maleic anhydride grafted polypropylene 0.5-5 parts;Amide lubricant 0.5-2 parts;Dimethyl silicone oil 0.5-1.5 parts.The wood powder dispersion effect in the polypropylene composite material of the application is very good, so that the wood grain polypropylene composite material of the application has the advantages of wood grain, high gloss.

The application relates to the technical field of processing and preparation of wood-based functional materials, and particularly discloses a wood-based friction material with a service life self-monitoring function and a preparation method thereof, which comprises the following steps: dispersing poplar powder in a co-solvent formed by mixing choline chloride and dihydroxide oxalic acid to obtain a mixed liquid, diluting and washing with water to obtain filter residue A; dispersing the filter residue A in distilled water I, adding sodium chlorite and acetic acid, stirring, and washing with water to obtain filter residue B; dispersing the filter residue B in distilled water II, adding phenolphthalein, and crushing to obtain a dispersion liquid; adding sodium chloride, solid Tris and tannic acid into the dispersion liquid, stirring, and washing with water to obtain filter residue C; dispersing the filter residue C in distilled water III, adding polyvinyl alcohol, stirring, pouring into a mold, and drying; dispersing the filter residue A in distilled water, adding sodium hydroxide and polyvinyl alcohol, stirring to obtain a mixed base liquid, continuously pouring into the mold, and drying to obtain the wood-based friction material. The friction material has the service life self-monitoring function, and the method is simple and low in cost.

The invention relates to the technical field of wood-plastic materials, and particularly discloses a high-strength and high-span three-layer co-extrusion wood-plastic floor and a preparation method. The co-extrusion wood-plastic floor comprises a surface layer, a core layer and a middle layer, the middle layer wraps the core layer, the surface layer wraps the middle layer, and the surface layer is a polyethylene material layer; the core layer is prepared from 35 to 45 parts of a polyethylene material, 35 to 50 parts of an ABS (Acrylonitrile Butadiene Styrene) material, 22 to 28 parts of wood flour, 20 to 35 parts of a recycled waste fiber material, 1.2 to 1.8 parts of zinc stearate and 1.2 to 1.8 parts of a titanate coupling agent; the middle layer is prepared from 70 to 85 parts of a polyethylene material, 30 to 50 parts of an ABS (Acrylonitrile Butadiene Styrene) material, 20 to 35 parts of a recycled waste fiber material, 1.2 to 1.8 parts of a titanate coupling agent and 1.2 to 1.8 parts of zinc stearate. According to the wood-plastic floor, the mechanical property of the wood-plastic floor in a high-span use scene can be improved, and the production cost is reduced.

The utility model discloses a wooden floor processing grinding and polishing machine which comprises a grinding and polishing shell, supporting plates are arranged at the front end and the rear end of the interior of the grinding and polishing shell, a wooden floor conveying belt is arranged between the two supporting plates, grinding and polishing rollers are arranged at the upper end of the interior of the grinding and polishing shell respectively, and the wooden floor processing grinding and polishing machine further comprises a wood chip collecting mechanism. And the wood chip collecting mechanism comprises dust collecting covers, dust suction pipes and brushing rollers, the dust collecting covers are arranged between the upper surfaces of the two supporting plates correspondingly, and the grinding and polishing rollers are rotationally connected between the front inner walls and the rear inner walls of the dust collecting covers through first rotating shafts correspondingly. According to the wood flour collecting device, wood flour generated during grinding and polishing of the wood floor is collected in a centralized and multi-directional mode, compared with a single dust collection mode, diffusion of the wood flour to the outside can be reduced, wood flour collection is more comprehensive, residues of the wood flour on the surface of the wood floor are reduced, follow-up machining is facilitated, and the quality of the wood floor machining environment is improved.

The invention relates to a preparation method of lignin-based multi-dimensional interpenetrating network modified wood powder and application of the lignin-based multi-dimensional interpenetrating network modified wood powder in synthetic leather. Lignin, nano barium sulfate, a silane coupling agent and wood powder are subjected to low-temperature reaction in an acid environment to form an organic-inorganic hybrid interpenetrating network, and the modified wood powder rich in active functional groups such as hydroxyl and the like is prepared; then, the modified wood powder is used as a framework material and is cross-linked with polyurethane to form a multi-dimensional interpenetrating network structure, the synthetic leather with a dislocation entanglement and mechanical interlocking structure is prepared, and the tensile strength, the elongation at break, the flexibility, the hydrolysis resistance, the wear resistance and other properties of the synthetic leather are enhanced.

The invention relates to the technical field of plastic-wood material production, in particular to a plastic-wood material production feeding device which comprises a feeding device body and further comprises a rotating assembly, a discharging box is fixedly connected to the top in the feeding device body, a feeding mechanism is arranged on the right side of the feeding device body, and the rotating assembly comprises a driving motor. According to the device, when self vibration of the vibration screening basket is not enough to crush the cakes, the device directly extrudes and crushes the small cakes at the bottom of the screening basket through the rubber extrusion roller, and meanwhile, the rubber extrusion roller is made of an elastic material and can partially fill filter holes of the vibration screening basket in the extrusion process, so that blockage is prevented; the detention of caked particles at the bottom of the screening basket is obviously reduced, smooth discharging of wood flour is ensured, production interruption or maintenance requirements caused by blockage are avoided, meanwhile, the deformation capacity of the elastic material allows the rollers to be filled in the filter holes in a self-adaptive mode, the caked particles are broken, the screen holes are not blocked, and the screening efficiency is improved.

The invention discloses a flame-retardant wood-plastic plate and a preparation method thereof, and relates to the technical field of wood-plastic plates. The flame-retardant wood-plastic plate prepared by the invention comprises modified polyethylene and modified wood flour, and the modified polyethylene is obtained by grafting a functional monomer to polyethylene and then reacting with phosphorus pentoxide; the modified wood flour is obtained by wrapping wood flour with polyether amine and then reacting with o-tolyl biguanide, and the prepared flame-retardant wood-plastic plate has good flame-retardant, antibacterial and anti-aging properties.

To provide a lattice-shaped external facing material, in which there is no distinction between front and rear and appearance is improved while construction is facilitated, by using a wood-tone composite material.SOLUTION: This lattice-shaped external facing material is assembled with a first sash bar material 3 and a second sash bar material 4 arranged in the direction of crossing with the first sash bar material mutually arranged in parallel at a predetermined interval. Each of the first crosspiece members has a first core material made of metal and having a rectangular cylindrical shape, a first covering layer covering an outer peripheral surface of the first core material and containing a synthetic resin and wood flour, and a through hole penetrating in a direction intersecting a longitudinal direction, and each of the second crosspiece members has a through member penetrating the through hole of the first crosspiece member and disposed over two or more of the first crosspiece members, and a cylindrical member including a second core material made of metal and having a cylindrical shape, and a second covering layer covering an outer peripheral surface of the second core material and containing a synthetic resin and wood flour, the cylindrical member is located between the first sash bar materials, is fitted so as to cover the outer periphery of the through member, and is held and fixed by the first sash bar materials in the lattice-shaped external facing material 2.SELECTED DRAWING: Figure 1

Wood mass composition for 3D printing of wooden objects, containing the following components (proportions based on weight): a) 100 ± 10 % Parts wood fiber / wood flour mixture b) 10 ± 10 % Methylcellulose c) 10 ± 10 % parts guar gum d) 10 ± 10 % Parts oil e) 8 ± 10 % parts alcohol f) 2 ± 10 % Parts shellac g) 300 ± 10 % parts of water h) 6 ± 10 % Parts of casein powder i) 6 ± 10 % parts slaked lime

The utility model discloses a wood powder processing device is used in corrugated paperboard production, including processing box and screening box, the bottom below of processing box and screening box is provided with base, the below one side of processing box is fixedly connected with screening box, the top of processing box is fixedly connected with feeding hopper, the bottom of feeding hopper is provided with feeding twisting roller, the inside top of processing box is provided with crushing bin, the below of crushing bin is provided with the crushing chamber, the inside of crushing chamber is provided with the smashing mechanism, the feeding twisting roller that the utility model sets, cooperation crushing bin and smashing mechanism can carry out the pressure roll crushing of larger timber again, then carry out the smashing work, cooperation multilayer screening mechanism can obtain multiple different specifications of powder in one batch simultaneously, the collection of experimental raw material is convenient, improves the homogeneity of raw material, and then can reduce the discreteness of experimental data, and the smashing mechanism and crushing bin can share a set of driving mechanism, and the equipment complexity is reduced.

This invention relates to the field of lightweight wood-plastic composite materials, specifically to an antistatic lightweight wood-plastic composite material and its preparation method, which addresses the problems of insufficient antistatic properties and high density in existing wood-plastic composite materials. The method involves mixing an antistatic agent with high-density polyethylene, extruding, cooling, crushing, and sieving to obtain an antistatic masterbatch. Modified wood flour, high-density polyethylene, maleic anhydride graft compatibilizer, antioxidant, 2-hydroxy-4-methoxybenzophenone, and γ-aminopropyltriethoxysilane are then mixed, cooled, and the antistatic masterbatch is added for further mixing. The mixture is fed into a twin-screw extruder, and cobalt ferrite-coated hollow glass microspheres are added. After extrusion, cooling, and crushing, the mixture is then subjected to secondary molding in a single-screw extruder, gradient cooling for shaping, and traction cutting to obtain the antistatic lightweight wood-plastic composite material. This material possesses excellent antistatic properties, low density, and lightweight characteristics, along with good flexural strength and impact strength, low water absorption, and excellent water resistance.

A writing instrument part that improves the releasability of a core pin is provided. In a writing instrument part by the insert molding method in which a wooden barrel material made of natural wood flour and a water-soluble resin binder is injected into a mold, the wooden barrel material and a core pin having a paper straw inserted therein are integrated, and a two-layer structure having a paper straw layer as an inner layer and a wooden barrel layer as an outer layer is formed.

The utility model provides a sawdust powder ejector, which belongs to the technical field of combustion furnace feeding equipment, and comprises an air inlet pipeline arranged at the air outlet end of a high-pressure fan, a suction cabin arranged on the surface of the front part of the air inlet pipeline, a first trapezoidal air pipe arranged at the front end of the air inlet pipeline, and a nozzle arranged at the front end of the first trapezoidal air pipe, a feeding pipeline is arranged on the upper portion of the first trapezoidal air pipe and penetrates through the top wall of the suction cabin, a second trapezoidal air pipe is arranged at the front end of the suction cabin, a throat pipe is arranged on an air outlet pipeline of the second trapezoidal air pipe, and a diffusion pipeline is arranged at the air outlet end of the throat pipe. High-pressure air generated by the high-pressure fan enters the first trapezoidal air pipe through the air inlet pipeline and then forms high-speed air jet flow through the nozzle, and at the moment, wood chip powder is sucked into the suction cabin after passing through the discharging end of the inclined hopper; and the materials and air are mixed at a high speed under a Venturi effect field formed by the high-speed airflow, enter the diffusion pipe through the throat pipe, and are continuously conveyed forwards until the materials are combusted in the combustion furnace.

The invention relates to moisture-proof plywood and a preparation method thereof, and belongs to the technical field of plywood processing.The moisture-proof plywood is obtained by gluing three layers of veneers through an adhesive, and the fiber directions of the adjacent layers of veneers are perpendicular to each other; the adhesive is composed of a liquid adhesive and a filling agent; wherein the liquid glue is prepared from the following raw materials in parts by weight: 40 to 45 parts of isocyanate, 6 to 12 parts of dioctyl phthalate, 3 to 6 parts of triethyl orthoformate, 12 to 16 parts of epoxidized soybean oil and 1 to 3 parts of polydimethylsiloxane; the filling agent is prepared from the following raw materials in parts by weight: 35-55 parts of wood flour, 10-20 parts of calcium carbonate, 30-35 parts of aluminum stearate and 5-10 parts of carbon nanotubes. The fiber directions of the adjacent layers of veneers are perpendicular to each other, the veneers can be prevented from being broken in the fiber directions, the adhesive is prepared in the mode that the liquid adhesive and the filler are combined, the filler provides a framework for the liquid adhesive, and the viscosity, the leveling property and other construction performance of the adhesive can be controlled.

The application discloses a method for preparing paper-based friction material by means of lignin-cellulose assisted exfoliation of two-dimensional materials, which comprises the following steps: adding choline chloride and oxalic acid into wood powder, mixing and stirring at a temperature of 80-110 DEG C until a viscous liquid is formed; taking 100-150 mL of the viscous liquid obtained in step one, adding 2-5 g of sodium p-aminobenzenesulfonate, 10-20 mL of isopropyl alcohol, 10-20 mL of anhydrous ethanol and 1 g of two-dimensional material, and then sequentially performing crushing treatment and ball milling exfoliation on the mixed liquid; collecting the viscous liquid after the ball milling is completed, adding distilled water for dilution, and then performing filtration, washing, separation and molding and curing to obtain a recyclable wood-based composite material, which is a paper-based friction material with high wear resistance, excellent water stability, good flexibility, heat conductivity, recyclability and biodegradability.

A composition contains an acetylated wood flour. This acetylated wood flour is substantially free of an inorganic acid ester bound to a cellulose main chain. A method of manufacturing the composition includes: treating a wood flour under reduced pressure; subjecting the wood flour treated under reduced pressure to pressurization treatment at an absolute pressure of 10 bar or more in an immersed state in a solvent containing an acetylating agent; and after the pressurization treatment, subjecting the wood flour to acetylation treatment by maintaining the solvent containing the wood flour and the acetylating agent at a temperature of 60 to 130° C. in a pressurized state at an absolute pressure of 1.1 to 1.9 bar in an inert gas atmosphere.

The invention relates to the technical field of wood-plastic profiles, in particular to a wood-plastic profile with high water boiling resistance and a production process of the wood-plastic profile. The wood-plastic profile with high water boiling resistance is prepared from the following components in parts by weight: 16 to 20 parts of HDPE (High-Density Polyethylene), 16 to 20 parts of LDPE (Low-Density Polyethylene), 49 to 52 parts of modified wood flour, 5 to 6.5 parts of talcum powder, 2 to 4 parts of lubricant, 3 to 5 parts of modified PE (Polyethylene), 0.3 to 0.6 part of carbon black and 0.3 to 0.4 part of antioxidant. A proper amount of high-density polyethylene and low-density polyethylene are compounded for use, so that the fluidity of the plastic component in a melting stage is improved while the mechanical property of the wood-plastic profile is ensured, the wrapping degree of the plastic component to the wood flour fiber is increased, the erosion and permeation of external moisture to the wood flour fiber are reduced, and the wood-plastic profile is more environment-friendly. And the expansion effect of wood powder fibers caused by water absorption is inhibited, so that the wood-plastic profile can tolerate a long-time boiling test and does not have cracking and peeling phenomena.

The invention discloses a high-strength flame-retardant lightweight wood-plastic composite material and a preparation method thereof. The composite material is prepared from the following components in parts by weight: 40-70 parts of PVC (polyvinyl chloride), 0-15 parts of calcium powder, 20-55 parts of a wood powder-based flame retardant, 1-5 parts of zinc hydroxystannate, 3-10 parts of a stabilizer, 0.3-1 part of PE (polyethylene) wax, 0.3-1 part of a high-temperature internal lubricant G60 and 4.5-8.5 parts of a flexibilizer HL100. The UL-94 flame retardant grade of the wood-plastic composite material can reach V-0 grade, the bending strength can reach 30-60 MPa, the tensile strength can reach 35-70 MPa, the density can reach 0.8-1.0 g / cm < 3 >, and the wood-plastic composite material has the advantages of simple process, environmental protection and wide application prospect, and is suitable for the fields of building templates, outdoor floors, fireproof doors and windows and the like with high requirements on mechanical properties and fireproof safety.

This product is a table with benches that is primarily used outdoors, and the components that form the table and seat are made of resin mixed with wood powder.