149 results about "Formaldehyde free" patented technology

A fibrous insulation product comprising a plurality of randomly oriented glass fibers and a cross-linked formaldehyde-free binder composition at least partially coating the fibers is disclosed. The cross-linked formaldehyde-free binder composition is formed from an aqueous binder composition comprising 5.0% by weight to 37.0% by weight of at least one monomeric polyol having at least four hydroxyl groups and at least 50.0% by weight of a cross-linking agent comprising a polymeric polycarboxylic acid having at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition. The glass fibers have an average fiber diameter in the range of 8 HT to 12 HT. The fibrous insulation product, after curing, has a density, when uncompressed, in the range of 0.30 pcf to 2.7 pcf.

The invention discloses a preparation method of a starch-polyvinyl alcohol-based room temperature curing wood adhesive for plywood, and belongs to the technical field of wood adhesives. At present, wood adhesives mainly come from petrochemical resources and mostly need hot-pressing curing, the invention provides the preparation method of the wood adhesive with starch and polyvinyl alcohol as main materials, and heat-free bonding can be achieved. The preparation method comprises the following steps: firstly, reacting corn starch with isocyanate to obtain carbamic acid esterified starch, then adding a polyvinyl alcohol aqueous solution, uniformly stirring to obtain a starch-polyvinyl alcohol-based room-temperature curing wood adhesive, uniformly coating a wood veneer with the starch-polyvinyl alcohol-based room-temperature curing wood adhesive, forming an odd-layer plate blank according to the principle that the fiber directions of adjacent layers are vertical, and then carrying out cold press molding to obtain the wood veneer. The starch-polyvinyl alcohol-based room temperature curing plywood can be obtained. The prepared starch-polyvinyl alcohol-based room temperature curing plywood has the advantages of being easy to prepare, high in bonding strength, good in water resistance, free of formaldehyde, free of hot pressing and the like, and has a good market popularization prospect.

The invention belongs to the technical field of fire-extinguishing building materials, and discloses a microencapsulated efficient automatic fire-extinguishing patch and a preparation method thereof.The fire-extinguishing patch contains a fire-extinguishing microcapsule, the fire-extinguishing microcapsule is of a double-layer structure, the inner layer contains gelatin, kaolin, perfluorohexanone, sodium hexametaphosphate, resorcinol and glutaraldehyde, and the outer layer contains gelatin, kaolin, perfluorohexanone, sodium hexametaphosphate, resorcinol and glutaraldehyde; and the outer layer comprises a vinylidene fluoride-acrylic acid copolymer and glutaraldehyde. According to the invention, the flaky kaolin is used for enhancing the formaldehyde-free phenolic aldehyde inner layer and the vinylidene fluoride-acrylic acid copolymer outer layer to form a double-layer shell layer with high air tightness, so that the compactness and long-term stability of the shell layer of the microcapsule are greatly improved.

The invention relates to the technical field of packaging paper, and discloses environment-friendly decorative paper and a preparation method and application thereof.The environment-friendly decorative paper comprises a base material, and an EB functional layer is formed on the base material; the EB functional layer is a coating layer formed by curing a functional coating through EB radiation curing; the functional coating is prepared from polyurethane and acrylic resin in a weight ratio of (1: 1)-(1: 4). According to the preparation method, the EB functional layer is prepared on the base material through the EB curing technology to replace a traditional high-temperature curing technology, the energy consumption problem of high-temperature curing can be avoided, and the preparation process of the EB functional layer is efficient. Besides, a formaldehyde-free environment-friendly process is realized, and an EB curing technology is combined, so that good bonding force can be formed between the EB functional layer and a base material, the EB functional layer has excellent wear resistance, scratch resistance and ultraviolet resistance, the service life of the decorative paper can be effectively prolonged, and the decorative paper is particularly remarkable in outdoor or high-use-frequency application.

The invention belongs to the technical field of biomass materials and environment-friendly adhesives, and relates to a biomass adhesive, in particular to a preparation method of a biomass environment-friendly adhesive based on longan shells, which comprises the following steps: firstly, cleaning, drying, crushing and screening the longan shells for pretreatment, and then carrying out alkalization and acetylation chemical modification to obtain the biomass environment-friendly adhesive based on the longan shells. And finally, compounding with gelatinized starch, a chitosan acetic acid solution and citric acid, and adjusting the viscosity to obtain the adhesive. The waste longan shells are used as raw materials, agricultural waste recycling is achieved, the product is free of formaldehyde release and biodegradable, and the viscosity of the prepared adhesive is 1000-2000 mPa.s at the temperature of 25 DEG C and is measured through a rotary viscometer; the wood-wood bonding strength is larger than or equal to 2.5 MPa, the 24-hour water absorption rate is smaller than or equal to 25%, the problems that a traditional biomass adhesive is short in performance and low in cost, special equipment is not needed for preparation are solved, the adhesive is suitable for the industrial fields of artificial board manufacturing, furniture manufacturing and the like, and environment-friendly transformation of the adhesive industry is promoted.

The invention discloses a preparation method of an environment-friendly 3D printing three-dimensional surface floor, which comprises the following steps: S1, drawing a plane drawing of the floor, generating a 3D model of the floor by using a computer, and obtaining all layered structures and arrangement modes for forming the floor; and S2, raw materials for preparing the floor are prepared according to the 3D model of the floor in the S1, the raw materials are conveyed into a 3D printer for 3D printing, and all layered structures for the floor are printed. Through a sustainable raw material system, a formaldehyde-free laminating process, high-precision 3D printing texture forming, a three-layer environment-friendly protection layer, a bio-based edge sealing technology and an internet-of-things intelligent production system, production energy consumption is reduced by 40%, waste is reduced by 50%, closed-loop recovery is achieved, meanwhile, the international environment protection certification is met, the production efficiency is improved by 30%, and the production cost is reduced. And a full-chain green manufacturing scheme for synergistically improving the environmental protection performance, the production efficiency and the product quality is formed, and the double-carbon target requirement is met.

The invention discloses a preparation method of a non-grain oil-based formaldehyde-free bamboo particle board. The non-grain oil-based bamboo particle board is prepared from a non-grain oil-based adhesive and bamboo particles. The non-grain oil-based adhesive is prepared from the following raw materials: an oil refining byproduct, glycidyl methacrylate, epoxy resin, a reinforcing agent, triethylene diamine and tert-butyl peroxybenzoate. The preparation method comprises the following steps: S1, preparing the non-grain oil-based adhesive; s2, uniformly spraying glue; s3, mechanically mixing; and S4, hot press molding. According to the method, the non-grain and non-oil waste grease mixture is used as the raw material to prepare the adhesive, the bamboo processing waste is glued to prepare the bamboo particle board, and high-value utilization of the bamboo processing waste and grease refining by-products is achieved; the prepared adhesive has the characteristics of high bio-based content, excellent bonding strength, good weather resistance, no formaldehyde, low cost, reproducibility and the like; the prepared bamboo particle board is free of formaldehyde release and has excellent mechanical performance, water resistance and high temperature resistance.

Disclosed are formaldehyde-free, thermally-curable, alkaline, aqueous binder compositions. Also disclosed are compositions comprising formaldehyde-free, thermally-curable binder compositions, as described herein, applied to non-woven fibers. Uses of the disclosed binder compositions as binders for non-woven fibers are also disclosed.

The invention relates to the field of bamboo veneer processing, in particular to a method for widening a large-breadth flattened sliced bamboo veneer, which comprises the following steps of: compounding the sliced bamboo veneer with gauze or non-woven fabric by hot pressing; edge cutting and width fixing are conducted on the compounded sliced bamboo veneers; glue is smeared in the thickness direction of the sliced bamboo veneers; the sliced bamboo veneers are placed in an environment of 30-50 DEG C, and glue is dried; the dried sliced bamboo veneers are placed in a board splicing machine for pre-splicing; and hot-pressing and compounding the sliced bamboo veneer and the gauze or the non-woven fabric again to obtain a finished product. The formaldehyde-free environment-friendly adhesive is adopted, so that chemical pollution is reduced; the side face of the sliced bamboo veneer is pre-spliced and combined with gauze / non-woven fabric, multiple times of gum dipping is avoided, and gum consumption can be reduced; continuous veneers with the width of 2-10 m or above can be prepared, cloth-shaped veneering materials are achieved and directly used for wall decoration, and machining links can be reduced; the cut bamboo wood is suitable for household products such as stationery bags and computer supports, and the application dimension of the bamboo wood can be expanded.

A water based 2K coating composition, containing one or more water soluble epoxy resins, one or more water soluble curing agents, and water, wherein the composition is substantially isocyanate free, along with a method for coating a substrate using the water based 2K coating composition. Additionally, an epoxy coating composition containing a multifunctional aliphatic epoxy resin crosslinked with a di- or higher-functional curing agent, either of an acrylic resin or a modified cellulose acetate resin, and a carrier, wherein the epoxy coating composition is at least one of substantially isocyanate free, substantially formaldehyde free, or substantially bisphenol-A free, along with a method for coating a substrate with the epoxy coating composition.

The invention discloses a preparation method and an application process of an environment-friendly stiffening agent, the molecular chain of the environment-friendly stiffening agent is as follows: (X-O) r-W-(O-(CO-Z-CO-O-Y-O) p-X) q, W is a (q + r)-valent organic group, (CO-Z-CO-O-Y-O) is a polyester resin skeleton taking a polycarboxylic acid component Z and a polyol component Y as polymerization components, and the formula is shown in the description. And X represents a residue of a polyacid having two or more carboxyl groups or hydrogen. The environment-friendly stiffening agent has the beneficial effects that the environment-friendly stiffening agent in the technical scheme has relatively high adhesion to polyester, can be co-melted with the polyester under the action of heat, is free of formaldehyde release, and has a strong hydrophilic group sulfonic acid group, so that the environment-friendly stiffening agent in the technical scheme has good water dispersibility, is convenient to store and simple in finishing process, and is suitable for industrial production. The problems of formaldehyde, yellowing, white marks, odor and softening of a traditional stiffening agent are effectively solved.

The present application relates to the technical field of environment-friendly glass wool, and proposes a pink environment-friendly glass wool, which comprises the following components in parts by weight: glass powder 50-60 parts, quartz sand 30-35 parts, dolomite 5-8 parts, borax 3-5 parts, soda ash 3-5 parts, nano-porous carbon 3-8 parts, silica aerogel powder 5-10 parts, formaldehyde-free adhesive 15-20 parts, and dyeing agent 0.02-0.05 parts. The above technical solution solves the problems of poor durability and environmental unfriendliness of the heat preservation and insulation performance of the glass wool product in the prior art.

The utility model relates to the technical field of building decoration materials, and discloses an environment-friendly decorative plate for indoor decoration, which comprises an outer frame, an environment-friendly mechanism is mounted on the inner wall of the outer frame and used for improving the water resistance and deformation resistance of the decorative plate, and mounting mechanisms are mounted on the front side and the rear side of the outer wall of the environment-friendly mechanism. And the mounting mechanism is used for conveniently mounting the decorative plate. The aluminum alloy keel material forms a net structure and a space stress system, loads can be transmitted in multiple directions, single-point stress concentration is avoided, the base material layer is formed by pressing bamboo and wood fibers and environment-friendly adhesives, the environment-friendly performance is excellent, formaldehyde release is avoided, the reinforcing layer is the glass fiber gridding cloth, the reinforcing layer is compounded with the base material layer through the hot pressing technology, and the heat insulation performance is good. And the finish coat is a water-based UV coating and covers the surface of the enhancement layer through a spraying process, so that the water resistance and the deformation resistance are high, and the water-based UV coating is suitable for a humid environment.

The invention provides a lyocell fabric dyeing anti-fibrillation finishing method which is characterized by comprising the following steps: 1, desizing and cleaning a lyocell fabric, feeding water according to a bath ratio of (1: 4)-(1: 20) to run the lyocell fabric, adding an anti-fibrillation cross-linking agent according to 3%-10% owf, adding a proper amount of reactive dye, and running uniformly; the anti-fibrillation cross-linking agent is a polyfunctional group compound containing more than two monochloro-s-triazine active groups and / or vinyl sulfone sodium sulfate active groups; the reactive dye comprises one or more of a monochloro-s-triazine type, a vinyl sulfone type, a monochloro-s-triazine group and a vinyl sulfone group double-active-group type; 2, anhydrous sodium sulphate is added, the temperature is increased to 60-70 DEG C, 15-25 g / L of sodium carbonate is added, and operation is conducted for 35-55 min; and 3, the temperature continues to rise to 75-85 DEG C, operation is conducted for 10-20 min, and drainage and cleaning are conducted after cooling. The process is simple, the flow is short, fibrillation can be prevented, the dyeing effect is good, formaldehyde release is avoided, a large amount of water resource consumption is saved, and wastewater discharge is reduced.

The utility model belongs to the technical field of double-clean solid core boards, and particularly relates to a double-clean solid core board which comprises a frame sealing frame, a Chinese oak board is fixedly installed in the frame sealing frame, waterproof layers are fixedly installed on the top of the Chinese oak board, the opposite sides of the two waterproof layers are tightly bonded with the same Chinese oak board through a first DM I adhesive layer, and a second DM I adhesive layer is arranged on the other side of the two waterproof layers. When the whole Chinese oak board is used, the whole Chinese oak board is compact in structure, high in hardness, capable of resisting abrasion and corrosion and long in service life, the whole board is high in stability and not prone to deformation, and the fireproof layer is arranged on the side, away from the waterproof layer, of the whole board. Meanwhile, the first DM I adhesive layer, the second DM I adhesive layer and the third DM I adhesive layer are free of formaldehyde, formaldehyde release is completely eradicated from the source, harm of formaldehyde to human health and pollution to the environment can be effectively avoided, and healthy and environment-friendly living and working space can be provided for people.

The invention discloses a preparation method and application of a non-grain bio-based formaldehyde-free shaving board adhesive. According to the preparation method of the non-grain bio-based formaldehyde-free shaving board adhesive, palm oil refining waste serves as a raw material, all the raw materials used in the preparation process are non-aldehyde compounds, the raw materials are chemically modified through transesterification, and the non-grain bio-based formaldehyde-free shaving board adhesive is prepared by increasing the crosslinking density and adjusting the interface bonding capacity. The mechanical property and the water resistance of the adhesive are enhanced. The prepared adhesive can be used for preparing shaving boards, and has the advantages of no formaldehyde release, environmental friendliness and the like. A new thought is provided for functional utilization of non-grain vegetable oil refining waste, the use requirements for production of the prepared adhesive composite artificial board are met, and the internal bonding strength, the static bending intensity, the water absorption expansion rate and the like of the shaving board can meet the existing national standard specification requirements.

The invention relates to an aqueous binder composition free of phenol and formaldehyde.

The invention relates to the technical field of air pipe valves, in particular to a module assembly type formaldehyde-free noise reduction air pipe valve. Comprising a silencing lining layer, mounting frames arranged at the front end and the rear end of the silencing lining layer, mounting holes formed in the four corners of the mounting frames, a rectangular valve pipe arranged on the outer side of the silencing lining layer and located between the two mounting frames, and a valve shaft vertically and rotationally mounted in the middle of the silencing lining layer. According to the formaldehyde-free noise reduction air pipe valve, the structure of an original formaldehyde-free noise reduction air pipe valve is scientifically and reasonably improved, the formaldehyde-free noise reduction air pipe valve is mainly composed of the noise reduction lining layer, the installation frame, the outer frame body, the inner spiral sleeve and the valve assembly, and tool-free modular assembly operation between components of the formaldehyde-free noise reduction air pipe valve can be achieved; and the assembling operation workload and difficulty of the formaldehyde-free silencing air pipe valve are effectively reduced, so that the assembling and processing efficiency and convenience of the formaldehyde-free silencing air pipe valve are improved.

A water based 2K coating composition, containing one or more water soluble epoxy resins, one or more water soluble curing agents, and water, wherein the composition is substantially isocyanate free, along with a method for coating a substrate using the water based 2K coating composition. Additionally, an epoxy coating composition containing a multifunctional aliphatic epoxy resin crosslinked with a di- or higher-functional curing agent, either of an acrylic resin or a modified cellulose acetate resin, and a carrier, wherein the epoxy coating composition is at least one of substantially isocyanate free, substantially formaldehyde free, or substantially bisphenol-A free, along with a method for coating a substrate with the epoxy coating composition.

The invention relates to an aqueous binder composition free of phenol and formaldehyde.

The invention discloses a formaldehyde-free water-resistant soybean meal-based composite adhesive and a preparation process of the formaldehyde-free water-resistant soybean meal-based composite adhesive on a multifunctional artificial board, and relates to the technical field of bio-based adhesives and wood processing. The adhesive is prepared from a soybean meal main raw material, a plant-based composite cross-linking system, a nano-mineral synergistic reinforcing phase, an interface regulating agent and a compound curing agent through a two-stage mixing technology, and the problems that a traditional soybean meal adhesive is poor in water resistance, uneven in dispersion, limited in applicable plate type, single in function and the like are solved. The obtained adhesive is free of formaldehyde release, the prepared artificial board (multilayer plywood, shaving board, fiberboard and the like) is free of glue failure after being boiled in boiling water for 2 h, the normal water absorption rate is smaller than or equal to 8%, the dry static bending intensity is larger than or equal to 15 MPa, meanwhile, the antibacterial rate is larger than or equal to 90%, the technology is compatible with an existing production line, the cost is reduced by 30%-40% compared with a traditional PAE type adhesive, and the adhesive is suitable for industrial production. The composite board can be widely applied to the fields of boards for furniture manufacturing, indoor decoration and humid environments.

The invention relates to the technical field of biomass adhesives, and discloses an environment-friendly plate bonding biological glue and a preparation method thereof, the biological glue is prepared from a composite vegetable protein basic raw material, water, alkali, protease, phytic acid and vanillic aldehyde thiosemicarbazone; the vanillin thiosemicarbazone is stable at normal temperature and can release vanillin in situ under a hot pressing condition; the preparation method comprises the following steps: carrying out alkaline denaturation on a composite raw material consisting of soybean meal, flour and peanut powder; then carrying out enzymolysis; and finally adding phytic acid and vanillic aldehyde thiosemicarbazone serving as a latent cross-linking agent. According to the invention, phytic acid and vanillin released in situ form a dual cross-linked network, so that the performance is synergistically improved; and the application of the latent cross-linking agent ensures the long working life. The obtained biological adhesive is free of formaldehyde addition and has excellent environmental protection property, mechanical property and process operability.

A method for forming an engineered veneer block includes stacking a plurality of laminate layers. The method also includes spreading a bonding agent between each layer of the plurality of laminate layers. The bonding agent includes an adhesive. The adhesive consists essentially of one or more no added formaldehyde adhesives. The method also includes slicing an engineered veneer from the engineered veneer block. The engineered veneer has a thickness in the range of 0.1 millimeters to 0.5 millimeters.

The invention discloses a laminated ceiba flame-retardant composite material and a preparation method thereof, and belongs to the technical field of artificial board processing. According to the composite material, wood fibers made of waste wood and recycled and smashed straw serve as main raw materials, and the straw and the wood fibers in a stirring state are treated through a bio-based organophosphorus flame retardant, so that the straw and the wood fibers have the flame retardant property; a formaldehyde-free adhesive is applied to glue the straw and the wood fibers, a structure with the upper surface layer and the lower surface layer made of the wood fibers and the core layer made of the straw is formed through lamination paving, and then the laminated type kapok flame-retardant composite material is obtained through hot pressing treatment. The laminated ceiba flame-retardant composite material prepared by the invention has excellent mechanical properties and flame retardance, the elastic modulus is greater than or equal to 2540.56 MPa, the static bending intensity is greater than or equal to 19.93 MPa, and the laminated ceiba flame-retardant composite material is environment-friendly, free of formaldehyde release and suitable for the fields of buildings, furniture and the like.

The invention discloses an antibacterial formaldehyde-free impregnating adhesive and a preparation process thereof, and belongs to the technical field of impregnating adhesives. The antibacterial formaldehyde-free impregnating adhesive comprises the following raw materials in parts by weight: 45-70 parts of a waterborne polyurethane dispersion, 0.5-1 part of a defoaming agent, 2-3 parts of a wetting agent, 1-1.5 parts of a thickening agent, 2-5 parts of an antibacterial agent, 5-8 parts of a flame retardant and 30-50 parts of deionized water. The antibacterial agent is prepared by the following steps: reacting diethanol amine with 1-chlorotridecane to generate a tertiary amine compound, reacting with 1, 2-bis (2-chloroethoxy) ethane to generate a quaternary ammonium salt compound, reacting with 5-chloro-1-pentyne to generate an alkynyl compound, and finally reacting with azidonicotinic acid formyl. The antibacterial formaldehyde-free impregnating adhesive prepared by the invention has excellent antibacterial property and flame retardant property, does not release formaldehyde, and meets the requirements of environmental protection, safety and high performance.

The invention discloses a light fiberboard manufacturing method based on a semi-dry process. The light fiberboard manufacturing method comprises the following steps that S1, wood is cut into wood chips; s2, the wood chips are screened; s3, the wood chips are preheated and cooked through a defibrator, fibers are obtained through mechanical separation, and the fibers enter a downstream pulp pool; s4, adding water to dilute the fibers in the pulp tank, and stirring to prepare fiber pulp; step S5, paving into a continuous plate blank through a fourdrinier forming machine; s6, the continuous plate blanks are dehydrated; s7, the continuous plate blanks are cut into fiber plate blanks; step S8, pressurizing and heating the fiber board blank through a hot press to prepare a semi-dry light board; step S9, carrying out drying treatment on the semi-dry light board; s10, the light fiberboard is sawn and cut; the production method has the advantages that glue adding is not needed, formaldehyde release is avoided, and the produced light fiberboard is low in density, light in weight and low in transportation cost; the sound absorption and noise reduction functions are realized, and the heat insulation performance is good.

The invention belongs to the technical field of structural adhesives, and discloses an environment-friendly polyurethane structural adhesive and a preparation method thereof. According to the invention, polyether polyol, isocyanate and a diluent are adopted as a basic system, an environment-friendly flexibilizer, an anti-aging agent and a coupling agent are innovatively added, and the environment-friendly polyurethane composite material is prepared by compounding the following components in parts by mass: 30 parts of polyether polyol, 50 parts of isocyanate, 20 parts of an environment-friendly diluent, 3-5 parts of an environment-friendly flexibilizer, 1-2 parts of a bio-based anti-aging agent and 0.5-1 part of a silane coupling agent. The prepared structural adhesive does not release harmful substances such as formaldehyde and benzene series, has higher bonding strength, excellent flexibility, aging resistance and base material adaptability, is simple and environment-friendly in preparation process, can be widely applied to the fields of furniture manufacturing, plate bonding, buildings and the like, and is remarkable in practicability and market prospect.

Coating compositions comprising a phenolic resin and a film-forming resin having functional groups that are reactive with the functionality of the phenolic resin are disclosed herein. The phenolic resin comprises a phenol group containing compound and a glyoxylic acid containing compound. Such phenolic resins may be used as formaldehyde-free crosslinkers in coating compositions and such coating compositions may be used on substrates comprising a non-porous material, such as metal, glass, and / or plastic. Also disclosed are methods of coating a substrate and coated substrates, including food and / or beverage containers.

The invention relates to a non-destructive measuring method for determining the amount of a formaldehyde-free binder applied to wood particles in an online manner in a production system for producing wood panels, the measuring method comprises the following steps: applying at least one formaldehyde-free binder to a respective sample made of wood particles as a reference sample in different quantificationally defined amounts, and spreading the reference sample onto a conveyor belt; recording at least one NIR spectrum of each of the reference samples spread onto the transport belt in a wavelength range of between 1000 nm and 2500 nm, preferably between 1350 nm and 2500 nm, using at least one NIR measuring head; correlating different quantified amounts of formaldehyde-free binder of the reference sample dispensed onto the conveyor belt with the recorded NIR spectrum of the mentioned reference sample; and creating a calibration model for the association between the spectral data of the NIR spectrum and the affiliated quantitative amount of formaldehyde-free binder of the reference sample dispensed onto the conveyor belt by means of multivariate data analysis; applying at least one formaldehyde-free binder to the wood particles (as a sample to be measured) and spreading the wood particles provided with the formaldehyde-free binder onto a conveyor belt; recording, using at least one NIR measuring head, at least one NIR spectrum of the wood particles provided with the formaldehyde-free binder and spread onto the conveyor belt in a wavelength range between 1000 nm and 2500 nm, preferably between 1350 nm and 2500 nm; and determining a quantitative amount of formaldehyde-free binder applied to the wood particles spread onto the conveyor belt by comparing the recorded NIR spectrum for the wood particles provided with the binder with the created calibration model.

The invention provides a moistureproof antibacterial straw mixed artificial board and a preparation method thereof, and relates to the technical field of straw artificial boards, the moistureproof antibacterial straw mixed artificial board comprises a core layer, a surface layer and a functional layer, the core layer comprises the following components by weight: 7-8 parts of wheat straw crude fiber, 1-2 parts of fir sawdust, 0.5-1 part of an adhesive, and 0.2-0.4 part of a zeolite compound; the surface layer is prepared from 2-3 parts of wheat straw fine fibers, 6-7 parts of eucalyptus sawdust, 1-2 parts of an adhesive and 0.1-0.3 part of nano silicon dioxide; the functional layer is prepared from the following components in parts by weight: 1 to 3 parts of plant extract, 0.5 to 1.5 parts of nano silver, 2 to 4 parts of titanium dioxide, 0.2 to 0.5 part of KH-550, 0.1 to 0.3 part of dodecafluoroheptyl propyl trimethoxy silane and 5 to 8 parts of polyurethane. A bio-based material system is used, the obtained straw and wood chip mixed artificial board is free of formaldehyde release, and damage to the human body is reduced; a gradient structure design is adopted, so that the mechanical property and moisture resistance of the plate are enhanced; plant extracts are adopted to construct a natural-inorganic antibacterial system, so that the plate has high antibacterial property.