138results about "Wood heating" patented technology

The utility model relates to a progressive striking type high-frequency compaction assembly line. The progressive striking type high-frequency compaction assembly line comprises operation equipment and a bearing component, the operation equipment comprises a preheating part, a high-frequency hot-pressing part and a water-cooling cold-pressing wood striking part; the high-frequency hot-pressing part comprises a plurality of high-frequency hot-pressing machines, a moving roller way of each high-frequency hot-pressing machine extends from an internal hot-pressing station to inlets and outlets in the two sides to be exposed, and the adjacent exposed moving roller ways are in butt joint; the water-cooling cold-pressing wood striking part comprises a plurality of water-cooling cold-pressing machines, a movable roller way of each water-cooling cold-pressing machine extends and is exposed towards inlets and outlets in the two sides from an internal pressing station, and the adjacent exposed movable roller ways are in butt joint; the bearing component is a tray which is arranged below the wood board and used for bearing the wood board. According to the production line, the high-frequency hot-pressing part, the water-cooling cold-pressing wood striking part and the bearing component are used, on the premise that the thickness of a wood board is allowed to rebound, the technical problems that in the prior art, due to the fact that an upper pressing plate and a lower pressing plate are needed for clamping and pressure maintaining, operation is complex, and process step adjustment is limited in the production line circulation process are solved, and the rebound problem is solved.

The invention discloses a wood-based basalt fiber composite material and a preparation method thereof, and belongs to the technical field of artificial boards, the wood-based basalt fiber composite material comprises a wood-based layer and a basalt fiber layer; the basalt fiber layer is made of modified basalt fibers; the modified basalt fiber is prepared by carrying out at least one of acid treatment, alkali treatment and plasma treatment on the surface of the basalt fiber. By utilizing the characteristic of high mechanical strength of the basalt fiber, the surface of the basalt fiber is modified by adopting methods such as acid treatment, alkali treatment and plasma treatment, so that the interface bonding performance of the basalt fiber can be improved, and then the basalt fiber is compounded with a wood veneer, so that the wood-based basalt fiber composite material with higher bonding strength can be prepared.

A method of treating a cellulose-based material, for example wood and engineered wood is provided, wherein the process involves the following steps: selecting and placing the cellulose-based material in a treatment chamber; impregnating the cellulose-based material with an impregnating agent consisting of an aqueous solution comprising a fluid suitable for esterification; facilitating a hydrolysis process whereby the impregnating agent reacts resulting in the formation of esters and polyesters inside the cellulosed-based material.

The invention discloses a stress-strain real-time monitoring device and a monitoring method during bending and heating forming of bamboo wood, the stress-strain real-time monitoring device comprises a platform support, a force measuring system is arranged on the platform support, and a material clamping system, a bending forming system, a motion control system and the force measuring system are respectively connected with a display system; the material clamping system is used for clamping the two ends of the bamboo wood so as to achieve preliminary bending of the bamboo wood. The bending forming system is used for applying stress to the bamboo wood so that the bamboo wood can be bent. The motion control system is connected with the bending forming system, and the motion control system drives the bending forming system to apply stress to the bamboos; the heating system is arranged on the bending forming system so as to heat the bamboo wood. The force measuring system is used for measuring the stress of the material clamping system and the stress of the bending forming system in real time; the display system is used for observing and recording stress changes and temperature changes in real time. According to the method, the stress-strain change of the bamboo wood in the bending forming state is recorded in real time, and the yield and the overall performance of the bamboo wood bending part are improved.

The invention relates to a method for modifying wood through high-voltage electrostatic field synergistic heat treatment and application of the method, and belongs to the technical field of wood processing. The method for modifying the wood through high-voltage electrostatic field synergistic heat treatment comprises the following steps that a wood sample is placed in a high-voltage electrostatic field, the electric field direction is perpendicular to the fiber direction of the wood, heat treatment is conducted after high-voltage electrostatic field treatment is completed, and the wood modified through high-voltage electrostatic field synergistic heat treatment is obtained. According to the method, the microstructure of the wood is optimized through the directional polarization effect of the high-voltage electrostatic field HVEF, and a physical basis for pyrolytic reaction interface regulation and control is provided for the carbonization process; and meanwhile, the synergistic interaction of the high-voltage electrostatic field HVEF and heat treatment on wood modification is achieved, and therefore high-quality utilization of wood is promoted.

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 relates to the technical field of bamboo processing and modification treatment, and discloses a method for improving high-permeability bamboo modification, which comprises the following steps: preparing a mixed aqueous solution of 9.25-37 mmol / L of alkali compound and 9.3-27.8 mmol / L of persulfate, and dipping bamboo at normal temperature for 3-6 hours; the soaked bamboo wood is heated and activated, and the activation mode is selected from one of 60-80 DEG C constant-temperature water bath treatment, 300-550 W microwave radiation treatment or 100-400 W ultrasonic radiation treatment; and after the activated bamboo wood is cleaned to be neutral, freeze drying is conducted at the temperature ranging from-50 DEG C to-70 DEG C. According to the method, free radicals generated by alkali liquor swelling and synergistic thermal activation of persulfate are utilized, bamboo blocking pore extracts are oxidized and degraded, a fluid conduction path is dredged, the permeability and porosity of the bamboo are improved, the original mechanical strength of the bamboo is kept, and the technical problems that traditional modified liquid medicine is difficult to permeate, and a skeleton is damaged due to strong base treatment are solved.

Provided is a method for producing compressed wood, including: an impregnation step of pressure-impregnating a block of wood having a thickness of 3 mm or more with an organic acid aqueous solution containing an organic acid; a drying step of drying the wood, in a wet state, which has been impregnated with the organic acid aqueous solution; a compression step of compressing the wood, which has been dried, while heating to 140 °C or more; and a heating step of heating the wood, which has been compressed, without compression.

Provided is a method for producing colored wood, the method including: a step of impregnating a block of wood with an organic acid aqueous solution containing an organic acid; and a step of performing steam treatment at high temperature and high pressure on the block of wood in a wet state of being impregnated with the organic acid aqueous solution while keeping the block of wood in the wet state. In the steam treatment, the temperature is 110° C. or more and 160° C. or less and the pressure is a saturated steam pressure at the temperature.

This invention relates to the field of wood processing technology, and provides a novel method for preparing slicing from the decay and softening of extra-hardwood. The method includes the following steps: immersing a wood sample in a water-filled container, first applying a vacuum, then depressurizing and maintaining the pressure for a period of time to allow liquid water to penetrate the wood cell cavities; heating the immersed sample and applying a vacuum again to cause the liquid water to boil and vaporize; extracting the sample after the bursting treatment with cold and hot water sequentially to remove extractives from the wood and reduce its decay resistance; adjusting the moisture content; treating the sample with brown rot fungi to cause decay and softening on the axial surface of the sample; soaking the sample in water and then freezing it until it is solid, followed by slicing. This invention can successfully produce slicings of extra-hardwood, providing a strong theoretical foundation and technical means for studying the structure of extra-hardwood, predicting its physical and mechanical properties, and improving its high-value-added processing and utilization.

The invention discloses a production method of flexible high-strength large-breadth thin bamboo strips. The production method comprises the following steps: [1] manufacturing rough planed bamboo strips; (2) carbonizing the bamboo canes; (3) drying the bamboo canes; (4) bamboo board manufacturing; (5) humidifying the bamboo board; the wet laminated bamboo board is directly placed on a slicing machine, the board is fixed through a vacuum adsorption device and sliced, the included angle between the rear angle and the wedge angle of a slicing tool and the horizontal plane of the bamboo board ranges from 15 degrees to 25 degrees, the included angle between the cutting edge of the slicing tool and the slicing feeding direction is the cutting edge inclination angle ranging from 30 degrees to 55 degrees, and micro thin bamboos with the thickness ranging from 0.08 mm to 0.5 mm are obtained through slicing; and (7) drying and laminating are conducted, specifically, the micro thin bamboo is manually leveled and fed into a drying machine, the hot air drying temperature ranges from 70 DEG C to 120 DEG C, the hot air speed ranges from 6 m / s to 8 m / s, the micro thin bamboo is dried till the water content is lower than 12%, then the micro thin bamboo enters a laminating machine, the micro thin bamboo and a polymer film are compounded at the temperature ranging from 70 DEG C to 190 DEG C, or the micro thin bamboo and paper are glued, and the large-breadth micro thin bamboo material is prepared. The finished product rate of sliced thin bamboos is increased, and the application field of bamboos is greatly expanded.

The present invention provides a method for producing a modified wood material. Specifically, the method comprises the following steps: 1) infiltrating a furan derivative resin solution into the wood material, the furan derivative resin solution containing a furan derivative, an inorganic salt that inhibits polymerization of the furan derivative at room temperature, and an inorganic salt that promotes polymerization of the furan derivative; and 2) heating the infiltrated furan derivative resin solution to polymerize the furan derivative in the wood material.

A method of producing a wood-based material that is modified is provided. Specifically, there is provided a method of producing a wood-based material, comprising 1) a step of impregnating a wood-based material with a furan derivative resinification solution that comprises a furan derivative, an inorganic salt inhibiting polymerization of the furan derivative at normal temperature, and an inorganic salt accelerating polymerization of the furan derivative; and 2) a step of polymerizing the furan derivative in the furan derivative resinification solution impregnated into the wood-based material within the wood-based material by means of heating.

Disclosed is a process for the production of coloured acetylated wood. Herein wood is subjected to a wood acetylation treatment and a wood colouring treatment. The wood colouring treatment comprises subjecting the wood to impregnation with a liquid comprising a colouring agent so as to provide impregnated wood, and subjecting the impregnated wood to a drying process to remove liquid from the impregnated wood by evaporation.

The present invention discloses a method for producing a modified wooden material. Specifically disclosed is a method for producing a modified wooden material, said method comprising: 1) a step for causing permeation, into a wooden material, of a 5-hydroxymethylfurfural (5-HMF) resinification solution containing 5-HMF and an inorganic salt for promoting polymerization of the 5-HMF; and 2) a step for polymerizing the 5-HMF of the permeated 5-HMF resinification solution in the wooden material by means of heating.

A method for purifying a post-consumer acetylated fluid recovered from a wood acetylation process is disclosed, which includes subjecting the recovered acetylated fluid to cold crystallization, which removes terpene and terpenoid impurities as well as other impurities. Also disclosed is a method for acetylating wood, which provides acetylated wood and a post-consumer acetylated fluid containing acetic acid, and which purifies the post-consumer acetylated fluid by cold crystallization.

This relates to a high-frequency consolidation flow line that sequentially lays down wood. [Solution] The operating equipment includes a preheating section, a high-frequency hot crimping section, and a water-cooled cold crimping wood laying section. The high-frequency hot crimping section includes several high-frequency hot crimping machines, the moving roller tables of each high-frequency hot crimping machine extend from the internal hot crimping work station toward the entrances on both sides and are exposed to the outside, with adjacent externally exposed moving roller tables butting against each other. The water-cooled cold crimping wood laying section includes several water-cooled cold crimping machines, the moving roller tables of each water-cooled cold crimping machine extend from the internal crimping work station toward the entrances on both sides and are exposed to the outside, with adjacent externally exposed moving roller tables butting against each other. The support members are trays placed beneath the wood boards to support them. The flow line is used for the support members by the high-frequency hot crimping section and the water-cooled cold crimping wood laying section, allowing for springback of the wood board thickness.

The invention discloses a plate splicing machine with an automatic vertical splicing function, and relates to the technical field of plate splicing machines, the plate splicing machine comprises a machine body, a conveying assembly is arranged on the left side of the machine body, a glue wrapping device is slidably mounted above the conveying assembly, a clamping device is arranged below the glue wrapping device, and an electric push rod fixedly penetrates through the upper portion of the machine body; an electric push rod is arranged on the machine body, a leveling device is arranged at the output end of the electric push rod, a material taking assembly is arranged below the machine body, a groove is formed in the inner wall of the machine body, a sliding plate is installed in the groove in a sliding mode, a switch is fixedly arranged at the bottom of the groove, and a heating fan is arranged below the material taking assembly. And the situation that follow-up machining cannot be smoothly conducted due to the fact that the wood plates deviate in the transportation process and collide with the machine body shell is avoided, the leveling device plays a role in leveling the wood plates, the situation that the warping parts of the wood plates affect splicing of the wood plates is prevented, and the splicing quality of the wood plates is improved.

The invention relates to the field of plywood hot pressing, in particular to an atomization mechanism for a plywood hot press, which comprises a hot press main body, a plurality of hot pressing plates are arranged in the hot press main body, and the atomization mechanism is arranged on one side of the hot press main body. The atomization mechanism comprises an atomization platform, a material pushing mechanism, an atomization mechanism body, a damp clearing mechanism and an adjusting mechanism. According to the scheme, the atomization platform is arranged before the plywood entering the hot pressing plate in the early stage enters, superfine atomization spraying is conducted on the surface of the plywood, the moisture evaporation problem caused by the high temperature of the hot pressing plate before the plywood enters the hot pressing machine can be compensated, the situation that the bonding strength is reduced due to premature drying of a glue layer is effectively avoided, and the hot pressing quality stability is remarkably improved; the material pushing mechanism can sequentially push the plywood into the atomization area and the hot pressing plate from the atomization platform according to the set rhythm, and the plywood can be automatically centered and positioned before entering the atomization area by matching with the adjusting mechanism, so that the plywood obtains consistent and uniform pre-wetting conditions before being fed into the hot pressing machine.

The application discloses a kind of wood surface photochromic coating and its preparation method, preparation method includes the following steps: preparation chitosan solution and transition metal oxide solution, wood is placed in the container with chitosan solution, the top and bottom of container are placed anode and cathode in parallel, direct current electric field is applied in the direction perpendicular to the surface to be loaded of substrate, after drying, wood is placed in the container with transition metal oxide solution, the top and bottom of container are placed cathode and anode in parallel, direct current electric field is applied in the direction perpendicular to the surface to be loaded of substrate, with the first chitosan and the first transition metal oxide solution of loading as a cycle, repeat cycle loading 5~10 times, obtain the wood substrate with photochromic coating, the application can quickly complete on the surface of wood substrate photochromic coating, sample is irradiated by ultraviolet light for about 15min, discoloration phenomenon is remarkable, color is basically restored after 24h shading.

Provided is a method for producing compressed wood, including: an impregnation step of pressure-impregnating a block of wood having a thickness of 3 mm or more with an organic acid aqueous solution containing an organic acid; a drying step of drying the wood, in a wet state, which has been impregnated with the organic acid aqueous solution; a compression step of compressing the wood, which has been dried, while heating to 140 °C or more; and a heating step of heating the wood, which has been compressed, without compression.

The application discloses a kind of damp-proof antibacterial high-density fiber board and preparation method thereof, belong to technical field.The damp-proof antibacterial high-density fiber board includes the following components by weight parts: 30-50 parts modified wood fiber, 20-25 parts adhesive, 10-15 parts nano calcium carbonate, 2-5 parts sodium silicate;The raw material of the application is simple, and the operation process is simple, and the operating condition is easy to control;The damp-proof antibacterial high-density fiber board prepared by the application is stable in nature, and has good damp-proof effect, antibacterial effect, strong practicality, strong adaptability, and is suitable for large-scale production and application.

The present invention provides a method for preparing photochromic transparent wood with high sensitivity to sunlight; we applied a new and simple synthesis method, which is based on removing light-absorbing lignin from natural wood. First, a sheet-shaped wood sample with uniform thickness is pretreated, and then the lignin is removed by treatment with sodium chlorite solution and glacial acetic acid. Then, it is ultrasonically treated with distilled water until neutral to obtain a wood sample with the lignin component removed; the sample is dehydrated by ultrasonic solvent replacement using absolute ethanol, isopropyl acetate, and propylene oxide to further obtain a dehydrated wood sample with the lignin component removed; then, we mix a sunlight-color-changing material (OP), prepolymerized methyl methacrylate (PMMA), and polyacrylic acid (PDESP) and directly incorporate them into the delignified wood, and finally cure and polymerize. The present invention has developed for the first time a photochromic transparent wood with high sensitivity to sunlight. The obtained reversible photochromic transparent wood can change from colorless to red rapidly under sunlight in only 1.5 seconds, and can change from red to colorless rapidly in the dark or under visible light in only 2 seconds.

The invention discloses bamboo bending forming equipment based on a thermal-mechanical coupling principle. Comprising a working table, a feeding station, a preheating station and a heating, bending and shaping station are sequentially arranged on the table top of the working table in the direction from feeding to discharging, a pushing mechanism, a preheating mechanism and a heating and shaping mechanism are correspondingly arranged, and a continuous machining assembly line is formed. The pushing mechanism can adaptively clamp and push bamboo materials with different diameters; the preheating mechanism is used for uniformly preheating the to-be-bent part of the bamboo so as to soften fibers and reduce the brittleness; and the heating and shaping mechanism is used for carrying out segmented heating and synchronous bending on the preheated part and carrying out rapid cooling and shaping by sprinkling water. The cracking risk is reduced through preheating, efficient, high-precision and automatic bending forming of bamboo wood is achieved through the heat-force synchronous effect and instant cooling shaping, the problems that in a traditional technology, the forming quality is poor, labor is relied on, and the product consistency is low are solved, and the method is particularly suitable for batch production of complex bent bamboo components in the field of buildings and furniture.

The plant material may be infiltrated with a solution having a stabilizer and / or a stabilizer precursor. The stabilizers and / or precursors may be absorbed within amorphous and / or hemicellulosic regions of the cell wall of the plant material. After permeation, the amorphous cellulose and / or hemicellulose may be cross-linked with the stabilizer. The stabilizer precursor may include a nucleophilic agent and an electrophilic agent, and the stabilizer may include a reaction product of a nucleophilic agent and an electrophilic agent. Each of the stabilizer and / or the precursor may have a molecular weight of less than or equal to 500 g / mol during permeation. After cross-linking, the stabilizer may impart higher water stability to the plant material, in particular, to limit swelling of the plant material regardless of the duration of exposure to water and / or the amount of water absorbed by the plant material.

The present invention relates to thermal or thermo-mechanical treatment of hygroscopic materials to adjust material properties. The present invention relates to an apparatus for modifying hygroscopic materials. The modification apparatus comprises a modification unit (202) and a fluid container (204) coupled to at least one fluid opening (203) via a control valve (205). The modification apparatus is configured to heat the hygroscopic material in the modification unit (202) to extract water from the hygroscopic material and to direct the fluid from the fluid container through the at least one fluid opening (203) into the modification unit (202) in response to opening of the control valve (205). The modification apparatus further comprises a treatment agent (207) that is added to the fluid, such that the treatment agent is absorbed into the hygroscopic material and modifies it. The treatment agent (207) comprises at least one of the following components: preservatives, dyes, pigments, fragrances, deodorants, insecticides, impregnation components, or flame retardants.

The present invention relates to a heating element for a wood drying device, and a wood drying device, comprising: a corrugated metal plate interposed between upper and lower stacked wood pieces and having alternating peaks and valleys; a heating cable which generates heat when power is applied; and a plurality of heat transfer pipes which are tightly bonded to the corrugated metal plate between the peaks and valleys of the corrugated metal plate to reinforce the strength of the corrugated metal plate, and into which the heating cable is sequentially inserted to transfer heat generated from the heating cable to the corrugated metal plate. The present invention is capable of uniformly transferring heat to the entire wood piece with a very simple structure, greatly improving the efficiency of heat transfer from the heating cable to the corrugated metal plate, greatly extending the service life of the heating element, and greatly improving the convenience of stacking wood pieces for drying wood.

This invention relates to a method for preparing dimensionally stable smart indicator labels using wood with retained lignin. It addresses the technical problems of existing blending methods for preparing smart indicator films, such as high cost and difficulty in identifying color changes due to humidity and transparency variations. The method involves: mixing epichlorohydrin, triethylamine, and ethanol to obtain a reaction solution; soaking poplar veneer in an alkaline solution to swell it before adding it to the reaction solution to obtain quaternized poplar veneer; then immersing the quaternized poplar veneer in a dye solution to adsorb bromothymol blue, followed by soaking in deionized water until neutral, and freeze-drying to obtain the smart indicator label. This label is highly sensitive to acetic acid gas, exhibiting a clear color change. When indicating milk freshness, the label changes from blue to green when °T is near the critical value specified by the national standard, providing a quick and accurate indication of milk freshness. This invention's smart indicator label can be used in the field of food testing.

The invention relates to a process for manufacturing a flame-retardant gluing engineering wood product. The process includes providing an engineered wood part treated by immersion with a metal silicate solution, exposing the metal silicate treated engineered wood part to an adhesive, and bonding a plurality of units of the metal silicate treated engineered wood together by the adhesive to form a flame retardant glued engineered wood article. The present invention also relates to flame retardant glued engineered wood articles prepared by the processes described herein.

The present application relates to a kind of progressive wood type high frequency compaction assembly line, including operating equipment and bearing component.The operating equipment includes preheating unit, high-frequency hot pressing unit and water-cooled cold pressing wood unit;High-frequency hot pressing unit includes several high-frequency hot presses, and the moving roller of each high-frequency hot press extends from the inside hot pressing station to the import and export of both sides and is exposed, and the adjacent exposed moving roller is butt joint;Water-cooled cold pressing wood unit includes several water-cooled cold presses, and the moving roller of each water-cooled cold press extends from the inside pressing station to the import and export of both sides and is exposed, and the adjacent exposed moving roller is butt joint;Bearing component is the tray that is placed under the wood board and supports wood board.The assembly line is used by high-frequency hot pressing unit and water-cooled cold pressing wood unit, bearing component, changes the technical problem that prior art needs to press plate clamping pressure retention in the process of production line circulation due to up and down, under the premise of allowing wood board thickness rebound, and process step adjustment is limited, and solve rebound problem.