35results about "Coating impregnation" patented technology

The invention discloses a smoke-suppression flame-retardant ecological board and a preparation method thereof. The ecological board comprises a base material, a flame-retardant adhesive layer and a facing layer which are sequentially stacked, wherein the flame-retardant adhesive layer is prepared from the following raw materials: 100 parts of urea-formaldehyde resin, 10-15 parts of a phosphorus-nitrogen composite flame retardant and 5-10 parts of flame-retardant filler; the preparation method of the phosphorus-nitrogen composite flame retardant comprises the following steps: carrying out an aminomethylation reaction on p-hydroxybenzoic acid, ethanolamine and paraformaldehyde which are used as raw materials in a molar ratio of 1: (1-1.2): (2-2.2) to prepare a Mannich base intermediate; and carrying out substitution reaction on the Mannich base intermediate and phosphonitrilic chloride trimer serving as raw materials according to the molar ratio of (3-7): 1. The phosphorus-nitrogen flame retardant disclosed by the invention is high in content of phosphorus and nitrogen elements and uniform in distribution ratio, and has more excellent synergistic smoke suppression and flame retardant effects compared with an existing physical compound system.

The present application relates to the technical field of wood processing machinery, and discloses a fireproof and high-temperature-resistant oriented strand board paving device, which comprises a base and a liquid storage tank, the top of the base is fixedly connected with a paving bin, the top of the paving bin is fixedly connected with a second processing bin, the top of the second processing bin is fixedly connected with a first processing bin, the top of the first processing bin is provided with a discharging bin, the top of the base is provided with a conveying belt, the outside of the paving bin is fixedly connected with a fourth motor, the output end of the fourth motor is fixedly connected with a loosening roller, and the inside of the second processing bin is provided with a screening assembly. The fire-retardant additive in the liquid storage tank is uniformly sprayed onto the surface of the shavings through the spray head, the memory alloy heat-sensitive block of the fire-retardant assembly in the conveying roller senses the temperature and automatically releases the fire extinguishing agent, the raw material modification and the production process safety protection double fireproof design are formed, and the fireproof and high-temperature-resistant performance of the oriented strand board product is improved.

The utility model discloses a continuous bamboo heating and spraying device which comprises a machine frame, a conveying mechanism is arranged on the machine frame, a heating mechanism and a spraying mechanism are sequentially arranged in the conveying direction of the conveying mechanism, and the heating mechanism comprises heat conduction pipes arranged above and below the conveying mechanism respectively. Materials are heated by the upper heat conduction pipes and the lower heat conduction pipes when being placed on the conveying mechanism to be conveyed, the spraying mechanism comprises a plurality of spraying pipes which are arranged on the upper portion at intervals in the width direction, and when the materials are conveyed to pass through the spraying mechanism, the spraying pipes on the upper portion spray mildew preventive. The surface of the bamboo product is preheated through automatic conveying, then mildew preventive is sprayed, the absorption efficiency of the bamboo product to the mildew preventive can be remarkably improved, and the mildew prevention performance of the bamboo product can be improved; the whole processing procedures are few, the automation degree is high, manpower is saved, efficiency is improved, and the quality of bamboo products is improved.

The application discloses a high-efficiency dehydration protection method for water-saturated wooden cultural relics, and specifically comprises the following steps: step 1, preparing a xylitol aqueous solution with a concentration of 30-80 wt%; step 2, soaking the water-saturated wooden cultural relics in the xylitol aqueous solution prepared in step 1 until the xylitol permeates into the water-saturated wooden cultural relics; step 3, taking out the water-saturated wooden cultural relics and removing the excess xylitol on the surface of the water-saturated wooden cultural relics; step 4, spraying a chitosan aqueous solution with a concentration of 1-5 wt% on the surface of the water-saturated wooden cultural relics treated in step 3 for multiple times; and step 5, spraying a glutaraldehyde aqueous solution with a concentration of 2-10 wt% on the surface of the water-saturated wooden cultural relics treated in step 4 for multiple times, then wrapping the water-saturated wooden cultural relics with a breathable film, and airing the water-saturated wooden cultural relics until the constant weight of the water-saturated wooden cultural relics is reached, thereby completing the dehydration and shaping of the water-saturated wooden cultural relics.

The utility model discloses an anti-corrosion and anti-moth processing device for shaving board manufacturing, which relates to the technical field of anti-corrosion and anti-moth for shaving board manufacturing and comprises a supporting leg, a swinging unit is arranged on the top surface of the supporting leg, an adjusting unit is arranged on one side of the swinging unit, and a material conveying unit is arranged on the top surface of the swinging unit. A mixing unit is arranged in the material conveying unit, the swinging unit comprises a spraying box, the spraying box is fixedly connected to the inner sides of the top surfaces of the supporting legs, a bidirectional motor is fixedly connected to the inner side face of the spraying box, the output end of the bidirectional motor is in transmission connection with a half gear, and one side of the half gear is in meshed connection with a gear. Through the arrangement of the spraying box, the bidirectional motor, the half gear, the gear, the connecting pipe and the spraying pipe, the spraying uniformity of the spraying pipe for spraying the anti-corrosion and mothproof materials is improved, the protection of the shaving board and the covering uniformity of the anti-corrosion and mothproof materials are further improved, and the service life of the shaving board is prolonged.

The invention relates to the technical field of bamboo product processing, in particular to a bamboo product processing method which comprises the steps that moso bamboos are transversely cut into bamboo sections, and then the bamboo sections are processed and formed to obtain bamboo blanks; bamboo fiber chippings generated during moso bamboo processing are collected, and the bamboo fiber chippings are crushed after being cleaned and subjected to impurity removal; preparing a compound liquid which comprises a compound enzyme of xylanase and cellulase, drying the bamboo blank until the water content is 10-12%, and engraving the area, needing to be subjected to laser engraving, of the bamboo blank by using a laser engraving machine; coating or spraying the composite liquid on the surface of the laser engraving area; bamboo fiber scraps in the bamboo processing process are collected, and then raw materials are crushed, so that bamboo fibers are recycled; a compound enzyme degradation product of xylanase and cellulase is used as a precursor of the repair material; the nano bamboo cellulose and the sodium hyaluronate form a net structure under the action of enzyme, and the nano bamboo cellulose is combined with the degradation product to form a new cross-linking point to fill the crack.

The utility model discloses a manual waxing device for wood product processing, which comprises an oil tank, the upper end of the oil tank is connected with a handle, the upper end of the oil tank is also provided with an oil adding port, the oil adding port is in threaded connection with a cover body, the lower end of the oil tank is provided with an oil outlet, an oil sealing roller is rotatably arranged in the oil outlet, and the lower end of the oil tank is also rotatably connected with a rolling brush. And the rolling brush is tangent to the oil sealing roller. Due to the fact that the oil tank containing wax oil is arranged, the rotatable oil sealing roller is arranged in the oil outlet of the oil tank, and the rolling brush is tangent to the oil sealing roller, during waxing operation, the oil sealing roller is driven to rotate through rotation of the rolling brush, the wax oil is attached to the rolling brush to conduct waxing operation on wood products, frequent dipping of the wax oil is not needed, and the waxing efficiency is improved. The labor intensity is reduced, and the working efficiency is improved.

The application discloses an environment-friendly formaldehyde-free flame-retardant density board, which comprises a board body and a coating plate, a plurality of fixing grooves are formed in the end face and the side wall of the board body, the fixing grooves are symmetrically arranged in pairs, two groups of sliding grooves are formed in the end face of the board body, and the sliding grooves are respectively communicated with the adjacent fixing grooves; and a preparation method of the environment-friendly formaldehyde-free flame-retardant density board is also provided, which comprises the following steps: S1, base material layer preparation, S2, flame-retardant layer preparation and coating, S3, coating plate preparation, and S4, board overall assembly. According to the application, the coating plate and the board body are designed as a separable structure, so that when the coating is damaged or worn, only the coating plate needs to be replaced, the whole board body does not need to be replaced, the cost of maintenance and replacement is effectively reduced, the replacement time is shortened, the maintenance efficiency is improved, and the high cost and the complicated process of replacing the whole board are avoided.

The present application relates to the technical field of surface treatment agent diluents, and in particular to a furniture wood surface treatment agent and a preparation method thereof. A furniture wood surface treatment agent comprises the following raw materials in parts by mass: 74-80 parts of acetates, 14-18 parts of ethyl esters, and 9.5-10.5 parts of ethanol. The surface treatment agent is brushed on the surface of a furniture wood product with a residence time of 22-24 minutes, and then the residual surface treatment agent on the surface of the furniture wood product is blown clean with an air gun. The present application accurately controls the amount of ethanol added and the residence time of the surface treatment agent on the wood surface. The furniture wood surface treatment agent of the present application can effectively improve the appearance of the wood, so that it has better texture clarity and three-dimensional sense, and can maintain the strength and stability of the wood, thereby improving the quality and decorative effect of the product.

The invention discloses a coconut shell structure imitating wood buffer material and a preparation method and application thereof.The preparation method comprises the following steps that wood is subjected to delignification treatment and soaked in water, and treated wood is obtained; the end face of the treated wood is subjected to end sealing treatment, and a sodium silicate solution is added for primary dipping treatment; and removing the end sealing material on the end surface of the impregnated wood, adding a polyvinyl alcohol solution, carrying out secondary impregnation treatment, and drying to obtain the wood buffer material with the imitated coconut shell structure. The wood buffer material with the imitated coconut shell structure has the advantages of light weight, high strength, good toughness, excellent buffer performance, excellent flame retardant property, good water resistance and the like, can replace a polystyrene foam material, and is widely applied to the field of product packaging.

The invention belongs to the technical field of wood processing, and relates to a surface modified bamboo nail and a preparation method and application thereof. In the prior art, bamboo nails are easy to break and split when being pneumatically injected into wood, and the injection performance is poor; in order to solve the technical problems of insufficient connection stability after injection, rapid reduction of pulling resistance due to great environmental influence and serious influence on use durability in the prior art, the invention provides a surface modified bamboo nail which comprises a bamboo nail base body, the composite coating is formed by compounding waterborne polyurethane and intercalated zirconium phosphate nanosheets, the intercalated zirconium phosphate nanosheets are evenly dispersed in the waterborne polyurethane according to the mass fraction of 3%-5%, the surface of the bamboo nail base body is evenly covered with the coating, and the thickness ranges from 35 micrometers to 40 micrometers; the overall density of the surface modified bamboo nail ranges from 0.87 g / cm < 3 > to 0.95 g / cm < 3 >, the surface modified bamboo nail is distributed in a step-shaped decreasing mode from the surface layer to the interior, the injection performance is excellent, and connection is stable. Furthermore, the invention further provides a preparation method of the surface modified bamboo nail. Meanwhile, the invention further provides application of the surface modified bamboo nail.

The application provides a preparation method of a hydrophobic anti-leaching fire-retardant plywood, comprising the following steps: (1) impregnating wood veneers in a fire-retardant liquid and a silica sol polymer resin mixed emulsion in sequence to obtain fire-retardant veneers; (2) assembling the fire-retardant veneers in a longitudinal and transverse interlaced manner to obtain a fire-retardant plywood base material; and (3) coating a hydrophobic coating on the surface of the fire-retardant plywood base material to form a hydrophobic coating layer, thereby obtaining the hydrophobic anti-leaching fire-retardant plywood. The wood veneers are impregnated in the fire-retardant liquid and the silica sol polymer resin mixed emulsion in sequence to fill the interior of the wood units, the polymer resin is used as a coating material in the silica sol, the anti-leaching performance of the fire retardant is enhanced, and the hardness and water resistance of the entire plywood are enhanced. The fire-retardant plywood base material is subjected to hydrophobic treatment, so that the plywood is endowed with self-cleaning ability, and the occurrence of adverse phenomena such as corrosion and insect damage is reduced.

The present application relates to bamboo product processing technical field, specifically to a kind of bamboo product processing method, comprising: cross bamboo into bamboo section, then bamboo section is processed into bamboo blank;Collect the bamboo fiber debris generated during bamboo processing, after washing and impurity removal, the bamboo fiber debris is crushed;Modulate composite liquid, including the composite enzyme of xylanase and cellulase, bamboo blank is dried to moisture content 10-12%, laser engraving machine is used to engrave on the area where bamboo blank needs to be laser engraved;Composite liquid is coated or sprayed on the surface of laser engraved area;The present application realizes the recovery of bamboo fiber by collecting and crushing raw materials during bamboo processing. The degradation product of the composite enzyme of xylanase and cellulase is used as the precursor of repair material. Nano-bamboo cellulose and sodium hyaluronate form a network structure under the action of enzyme, nano-bamboo cellulose combines with degradation product to form new crosslinking point and fill the cracks.

The invention relates to the technical field of flame-retardant coatings, and particularly discloses a flame retardant for transparent wood, a flame-retardant coating, a preparation method of the flame-retardant coating and fireproof transparent wood, the flame retardant for the transparent wood is characterized in that the structural general formula of the flame retardant is PAXY-M, the flame retardant is a water-soluble flame retardant, and an aqueous solution of the flame retardant is a transparent aqueous solution; m is selected from at least one of Ca < 2 + >, Co < 2 + >, Ni < 2 + >, Cu < 2 + > and Zn < 2 + >, and M is respectively coordinated with phytic acid and xylitol. The fireproof coating disclosed by the invention is high in light transmittance, and has good fireproof performance by connecting phytic acid xylitol with a metal system on the premise that the original appearance and touch of wood are not influenced, especially LOI and flame resistance are greatly improved, and the use safety of the transparent wood is further improved.

The present application relates to the field of ecological board manufacturing, and specifically discloses an ecological board production process for solving the deformation of the board, and the process is as follows: nano-modified layers are coated on both sides of the core board to modify wood fibers, and then radio frequency drying is adopted; the positions of the soft veneer board and the decorative paper on the core board are adjusted, the positioning datum is fixed, and then hot pressing and gluing are performed; after hot pressing and gluing, the ecological board is obtained by being placed in a cooling and solidifying device and gradually cooled according to a set cooling curve; and the present application adopts bio-based polyester in the selection of adhesives, such materials have excellent bonding performance and waterproofness, and can enhance the stability of the board; the surface of the board is modified by nano technology, and a core board with stable performance and excellent deformation resistance can be obtained, nano materials can form extremely fine coatings, improve the stability of the board, and reduce the dimensional instability caused by environmental changes, and improve the service life and appearance quality of the core board.

The present invention relates to the field of functional wood materials, and discloses a super-hydrophobic wood, a preparation method thereof, and a composite suspension. The components of the composite suspension include nano-hydroxyapatite, polydimethylsiloxane, ethyl acetate, and a curing agent. The preparation method of the super-hydrophobic wood comprises the following steps: subjecting the wood to an alkali etching treatment; spraying the composite suspension on the surface of the wood, and obtaining the super-hydrophobic wood after curing. The super-hydrophobic wood prepared by the present invention has excellent water-repellent properties, and its water contact angle can reach 153.3°. At the same time, the rolling angle is small, only 4.3°, and is suitable for wood applications in outdoor environments. After 60 days of outdoor exposure, the water contact angle can still be maintained at 152.5°, and the rolling angle is about 6.1°, which proves that the coating has good weather resistance. After multiple wear and repair cycles, the water contact angle can still be restored to 142°, and the repair rate is as high as 92.4%.

The application discloses a kind of wood product dimensional stability surface treatment device and processing technology thereof, including the following steps: wood product surface is cleaned, dry, enzyme solution is uniformly sprayed on wood product surface, and wood product surface is analyzed by spectrum, washed clean, and the lignin removal rate of wood product surface is detected;The wood product of lignin removal is placed in heat treatment furnace, and heating, heat preservation and cooling treatment are sequentially carried out respectively, and the wood product is taken out and ventilated at room temperature;Epoxy resin and hardener are stirred and mixed to obtain a mixture, the mixture is uniformly applied to the surface of wood product, the voids of wood product surface are filled, and solidification is carried out at room temperature;Silane solution is uniformly sprayed on the surface of solidified epoxy resin using spraying method, dried and solidified;The absorption and transmission of moisture by the wood product are blocked, thereby avoiding the expansion or shrinkage of the wood product, and the dimensional stability of the wood product is improved.

The invention discloses a prestressed fiber reinforced wood-bamboo-based pipeline for maritime work and a preparation method thereof, and belongs to the technical field of ocean engineering pipelines. The pipeline sequentially comprises a waterproof sealing layer, a structural middle layer, a prestressed fiber winding layer and an anti-corrosion outer layer from inside to outside. The structural middle layer is formed by splicing a plurality of arc-shaped unit strips made of recombined wood, recombined bamboo or bamboo laminated wood in the circumferential direction through mortise and tenon interference fit and glue joint. The prestressed fiber winding layer is formed by winding and curing continuous fibers impregnated with resin under preset tension, and continuous radial compression prestress is applied to the structural middle layer after curing. The high-strength performance of the recombined wood or / and bamboo is utilized, the ring stiffness, the axial strength and the sealing reliability of the wood-bamboo-based pipeline are improved through the synergistic effect of a mortise and tenon interlocking structure and prestressed fiber constraint, and the problems that a traditional biomass pipeline is poor in sealing performance, low in pressure resistance and prone to deformation are solved; the structure is suitable for floating body pipelines and bearing components in ocean floating structures.

The application discloses a wood-bamboo composite mildew-proof agent with heat-alkali coupling stability and a preparation method and application thereof. The wood-bamboo composite mildew-proof agent uses organic phosphoric acid antioxidants and polymerization-resistant heat stabilizers in combination to improve the antioxidant performance and heat stability of the wood-bamboo composite mildew-proof agent, and inhibits the degradation of the wood-bamboo composite mildew-proof agent under an alkaline environment and high-temperature treatment, thereby reducing the decrease of the mildew-proof performance of wood-bamboo composite materials added with the wood-bamboo composite mildew-proof agent due to a hot-pressing process.

The invention discloses an ecological density board and a preparation method thereof, and belongs to the technical field of artificial boards. The environment-friendly coating is coated on the surface of the density board, so that the durability and flame retardance of the ecological board are improved, the environment-friendly coating can continuously release negative ions, remove harmful pollutants such as formaldehyde released by wood fibers and effectively improve the air quality, and the environment-friendly coating is compact in film formation, high in mechanical strength and good in flame retardance. The overall performance and the service life of the ecological density board can be effectively improved. Meanwhile, functional components such as modified titanium dioxide and carbon nanotubes are introduced, so that the coating has excellent aging resistance and flame retardance, in addition, an environment-friendly solvent is adopted in the system, VOC emission is reduced, and the green and environment-friendly concept is met.

The utility model relates to the technical field of composite boards, in particular to a board with an insect expelling structure. According to the technical scheme, the board comprises a board body, the board body comprises a base board, a surface board is arranged on one side of the base board, a density board is arranged between the base board and the surface board, core boards are arranged on the side, away from the base board, of the density board, multiple sets of microcapsules are arranged on one side of each set of core boards, and shaving boards are arranged on the sides, away from the density board, of the core boards; the periphery of the plate body is coated with an insect-resistant agent, and one side of the surface layer plate is coated with varnish. The insect-resistant plate is simple in overall structure, physical, chemical and natural insect-resistant means are combined, and the insect-resistant capability of the plate is improved by adopting the methods of coating, soaking, microcapsules and plant essential oil, so that the plate not only can prevent insect damage to the structure, but also can prolong the service life, and the practicability and the safety of the plate are improved.

The application discloses a kind of based on self-assembly composite flame-retardant coating, with polyacetylimine PEI as positive flame-retardant raw material, APP / K10 prepared with ammonium polyphosphate APP and montmorillonite K10 as negative flame-retardant raw material, copper sulfate CuSO4 as positive electric protection raw material, sodium alginate SA as negative electric protection raw material, by the method for preparation of opposite charge polyelectrolyte by alternative immersion anion solution and cation solution.Its preparation method includes the following steps:1, the surface pretreatment of wood;2, the preparation of self-assembly solution;3, the construction of self-assembly composite flame-retardant coating;4, the protection of self-assembly composite flame-retardant coating.When the application as flame-retardant material, with flame-retardant property, pass UL-94V-0 level test;Limiting oxygen index is 40-60%;The temperature when decomposition mass is 5% is 120-140℃, the temperature when maximum decomposition rate is 280-320℃, the residual carbon amount at 800℃ is 30-40wt.%, after complete combustion, the residual carbon carbon layer is continuous and dense, without obvious crack and broken fiber structure, there is no hole.

The utility model relates to the technical field of ancient building repair, and discloses an ancient building wooden component anti-corrosion and anti-mildew treatment device which comprises a medicine storage box and a grip, limiting grooves are formed in the left side and the right side of the interior of the grip, limiting blocks are movably installed in the two limiting grooves, and a telescopic rod is fixedly installed between the two limiting blocks. The telescopic rod slides in the grip in a manner of pushing the grip, further, the ejector pin pushes the baffle downwards to enable the through hole and the connecting port to be aligned with each other, at the moment, an anti-corrosion agent enters the movable groove, and the sponge sleeve is infiltrated with the agent from inside to outside through the arrangement of the liquid inlet groove and the liquid injection groove, so that the anti-corrosion effect is achieved. Compared with a traditional dipping mode for applying the medicine to the wood component, when the device is used for adding the medicine, the sponge sleeve can be thoroughly soaked with the anti-corrosion medicine only by pushing the handle, use is convenient, and waste of the medicine is prevented.

The invention relates to the technical field of furniture processing, in particular to a wax sealing process for a groove entering position of furniture, which comprises the following steps: S1, preparing a wax composition: preparing the wax composition from the following components in parts by weight: 68-70% of beewax, 15% of palm wax, 10-12% of cooked linseed oil and 3-7% of tea tree essential oil; s2, mixing the beeswax and the palm wax, and heating to 75 + / -2 DEG C until the beeswax and the palm wax are completely melted; s3, adding cooked linseed oil which is preheated to 60 + / -2 DEG C, and stirring for 5 minutes until the cooked linseed oil is uniformly emulsified; s4, cooling to 50 + / -2 DEG C, adding the tea tree essential oil, and uniformly stirring; and S5, applying the wax composition to the groove entering part of the furniture, so that the part is in a non-adhesive movable connection state. In the wax sealing process for the groove entering position of the furniture, natural components such as the beewax and the palm wax are compounded, no adhesive is used in the whole process, release of volatile harmful substances such as formaldehyde is avoided from the source, and the environment-friendly standard of modern furniture is met. Wherein due to the addition of the cooked linseed oil, not only is the affinity of wax and wood fibers enhanced, but also natural dry components of the cooked linseed oil can form a breathable protective film.

The invention relates to the technical field of bamboo processing and food packaging, and particularly discloses a scheme for improving bamboo temperature tolerance and surface hydrophobicity, the scheme comprises the following steps: pretreatment: carrying out ultrasonic-assisted hydrothermal treatment on raw materials; the surface of the bamboo wood is coated with the coating, the coating comprises cellulose nanofibers (CNF), food-grade high-hardness resin and food-grade silicon dioxide, and the bamboo wood which can resist the high temperature of 200 DEG C and can be repeatedly used for food contact can be prepared after curing. According to the method, thermo-sensitive substances in bamboo wood are effectively removed through multiple times of mild ultrasonic pretreatment, soluble sugar with high hygroscopicity on the surfaces of the bamboo chips is removed, and the heat resistance of the bamboo chips is improved on the premise that the mechanical property is not damaged; the biomass-based temperature-resistant coating is adopted, the adhesive force of the coating is high, a layer of compact physical barrier is formed on the surface of the bamboo wood through food-grade high-hardness resin, and water permeation is prevented. CNF is used as a nano reinforced phase, and the strength, toughness and adhesive force to bamboo wood of the coating are improved through a three-dimensional network structure. In addition, food-grade silicon dioxide is dispersed in the coating to form a microscopic coarse structure to block air and further enhance the hydrophobic effect, so that the product has hydrophobicity on the premise of improving the temperature resistance, is safe and non-toxic, and meets the safety standard of food contact materials. The obtained bamboo wood is suitable for application scenes such as food processing utensils, catering kitchenware, cooking and the like.

This invention aims to recycle light and other energy sources using natural materials. It proposes a novel method for preparing transparent, color-adjustable, luminescent wood. By confining the luminescent molecules with a rigid polymer, the long-lasting luminescence of the phosphorescent molecules is achieved. This method involves filling the treated wood with PMMA, a material with room-temperature phosphorescence properties. To address performance limitations such as the lack of adjustable color for long-lasting luminescence, a blend of multiple luminescent molecules is used to achieve multi-color tunable long-lasting luminescence wood, and to construct long-lasting white light materials.

The invention relates to the technical field of composite plywood preparation, and discloses a high-strength flame-retardant composite plywood and a preparation process thereof.The high-strength flame-retardant composite plywood is characterized in that a hot pressing device comprises a base and a hot pressing block, a support is fixedly mounted on the upper surface of the base, and a bearing plate is mounted at the top end of the support; a hydraulic cylinder is fixedly installed at the top end of the bearing plate, and an output shaft of the hydraulic cylinder is fixedly installed on the upper surface of the hot pressing block. According to the high-strength flame-retardant composite plywood and the preparation process thereof, by means of the pressure relief mechanism arranged in the hot-pressing block and the use of the pressure sensing sampling partition plate, the diaphragm, the diaphragm type pressure relief valve and other structures, the steam pressure in the plate blank can be sensed and automatically adjusted in real time, and intelligence and accuracy of the pressure relief process are achieved; the defect of bubbling or layering caused by improper manual control of the pressure reduction speed is avoided, the mechanical integrity and the appearance quality of products are improved, and therefore the actual production qualification rate is increased.

The application discloses a preparation method of a high-strength bamboo-based composite material with antibacterial and corrosion resistance, which comprises the following steps: removing bamboo green and bamboo yellow from selected bamboo materials and cutting the bamboo materials into bamboo sections; removing nodes and peeling the bamboo sections; putting part of the bamboo sections into a reaction kettle; adding a lignin removing agent solution to completely immerse the bamboo sections; heating the bamboo sections under high temperature and high pressure until boiling for 10 minutes; naturally cooling the bamboo sections and cleaning the bamboo sections; adding water to completely immerse the bamboo sections again; adding hydrogen peroxide after 5 minutes; cleaning the bamboo sections after boiling; and reserving the bamboo sections for use, without processing the rest of the bamboo sections; drying and carbonizing the nodes and waste bamboo materials; calcining and processing the obtained bamboo charcoal to obtain bamboo vinegar and the like. The high-strength bamboo-based composite material with antibacterial and corrosion resistance and the preparation method thereof can solve the problems of bamboo corrosion and low strength, can process and utilize bamboo waste as raw materials, improve performance, reduce cost, and are safe and environmentally friendly.

The invention is applicable to the technical field of materials, and provides a preparation method for forming a wood-bamboo composite material by using a wood-bamboo prepreg, which comprises the following steps: carrying out hemicellulose removal treatment on a wood-bamboo veneer in a chemical solution, then carrying out nano reinforcement, hot-pressing compaction treatment and resin pre-impregnation treatment, and carrying out high-temperature hot-pressing forming treatment on a prepreg assembly, thereby obtaining the wood-bamboo composite material. And the formed wood-bamboo composite material is obtained. By adopting a hemicellulose removal mode, micron-sized gaps are formed in intercellular layers of wood and bamboo, interaction force is formed by adding nano-crystalline cellulose into the gaps, fibers are tightly interwoven to form the high-strength wood and bamboo veneer after hot-pressing compaction, the gaps among the fibers of the wood and bamboo veneer are further filled by applying pre-impregnated resin, and the high-strength wood and bamboo veneer is obtained. And finally, assembling is conducted, and the formed wood-bamboo composite material which is high in bending rigidity and hardness, lower in density, environmentally friendly and low in cost is obtained through high-temperature hot press forming.

The application discloses symmetrical structure reversible radiation refrigeration / heating wood and a preparation method thereof, and the method comprises the following steps: mixing sodium hypochlorite and deionized water, adjusting the pH value to obtain a composite solution A; immersing wood into the mixed solution A and heating to obtain material A; immersing the material A into a hydrogen peroxide solution and heating to obtain material B; freeze-drying the material B to obtain material C; mixing hydrochloric acid, deionized water, lithium fluoride and MAX to obtain a suspension A; adding water to the suspension A and centrifuging, and measuring the pH value of the supernatant, and repeating the water adding and centrifuging until the pH value of the supernatant reaches a required pH value, and removing the supernatant; taking the precipitate, adding an ethanol solution and ultrasonicating, centrifuging the ultrasonic dispersion mixture, and removing the upper liquid; adding deionized water to the centrifuged precipitate, repeating the ultrasonicating and centrifuging, and collecting the upper liquid after each centrifuging to obtain an MXene solution; coating the MXene solution on one side of the material C, drying, covering a copper mesh on one side of the material C and hot-pressing, and the symmetrical structure reversible radiation refrigeration / heating wood is obtained.