135results about "Pressure impregnation" patented technology

The invention discloses a purple light wingceltis furniture mirror surface treatment process and purple light wingceltis furniture, and belongs to the technical field of furniture surface treatment.The purple light wingceltis furniture mirror surface treatment process comprises the specific steps that S1, a wood component is subjected to vacuum impregnation stabilization treatment; s2, the wood component treated in the S1 is subjected to multi-stage drying, moisture regaining and re-drying treatment; s3, the wood component treated in the S2 is soaked in wax liquid emulsion and subjected to ultrasonic cavitation treatment; s4, the wood component treated in the S3 is soaked in composite wax liquid for multi-stage progressive wax boiling treatment; s5, dewaxing, grinding and polishing treatment is conducted on the wood component treated in the S4; and S6, the wood component treated in S5 is sealed and protected. According to the technical scheme, the mirror surface effect, pore sealing, antifouling and waterproof performance, wood stability and other aspects are remarkably improved in the field of purple light wingceltis furniture surface treatment.

The invention discloses a wood-based composite phase-change material and a preparation method thereof, and belongs to the technical field of phase-change materials.The preparation method of the wood-based composite phase-change material comprises the following steps that wood is cut and then added into delignification liquid to be heated, the wood is taken out and washed with water, and delignified wood is obtained; the delignification wood is added into the modification liquid to be heated, and after being taken out, the delignification wood is washed and dried to obtain pretreated wood; mixing polyethylene glycol, citric acid and boric acid, heating and stirring to obtain a phase change material; dipping the pretreated wood into the phase change material for vacuum dipping, taking out and drying to obtain the phase change material. The modified liquid is prepared from an ethanol water solution, a modified filler, 2-(3, 4-cyclohexene oxide) ethyltrimethoxysilane and triethylamine. The delignification liquid and the modification liquid are adopted for pretreating the wood, so that the wood can be better firmly combined with the phase change material, leakage is prevented, and the finally prepared wood-based composite phase change material has excellent heat management capacity and stability.

The invention provides a preparation method of a stable-size and high-strength laminated timber, which comprises the following steps of: mixing boric acid and choline chloride, and heating and melting at 90 DEG C to form a uniform, stable and transparent liquid, so as to obtain a deep eutectic solvent DES; the preparation method comprises the following steps: under the vacuum degree of-0.1 MPa, dipping wood veneers in DES, performing high-temperature steam sterilization treatment under the condition of 121 DEG C, assembling the veneers subjected to multi-layer treatment according to a rift-grain mode, and performing hot pressing at 160 DEG C to obtain the laminated timber with stable size and high strength. The prepared laminated timber has dimensional stability and good mechanical properties, has structural applicability of direct contact with a moisture environment, and has the advantages of mildew resistance, corrosion resistance, flame retardance and the like.

The invention provides a solid wood floor secondary balance humidifying method based on dynamic moisture content closed-loop control. The solid wood floor secondary balance humidifying method comprises the steps that a wood digital structure model is established; based on the wood digital structure model, a deep learning algorithm is used for recognizing a high-density area and a low-density area, laser micropore machining is conducted on the high-density area, surface sealing treatment is conducted on the low-density area, and preprocessed wood is obtained; sequentially carrying out silane coupling agent pretreatment and titanate coupling agent modification treatment on the pretreated wood, and automatically adjusting temperature and humidity parameters in a cabin when detecting that the moisture content drift is greater than 0.3%, so as to control the moisture content of the wood in a range of 8-10%; and the wood obtained after dipping treatment is subjected to programmed heating curing treatment, heat of high-temperature gas generated in the curing process is recycled through a heat exchanger and used for a humidity adjusting process, and a cured solid wood floor product is obtained.

The invention relates to a method for producing a wooden composite board, comprising the steps: producing of a raw wooden composite board which has a first side surface, a second side surface which runs parallel to the first side surface, and edge surfaces which connect the side surfaces to one another; applying of a flame retardant-containing liquid at least to the first side surface; and applying of a negative pressure to the second side surface, with the result that the flame retardant-containing liquid is sucked into an edge zone of the raw wooden composite board; and / or applying of a positive pressure to the first side surface, with the result that the flame retardant-containing liquid is pressed into an edge zone of the raw wooden composite board, with the result that the wooden composite board is produced.

The invention relates to the technical field of cork materials, in particular to SiO2-ZrO2 / cork composite particles and a preparation method and application thereof. The SiO2-ZrO2 / cork composite particles are prepared by adopting a sol-gel method, enabling SiO2-ZrO2 sol to be in full contact with and permeate into each cork particle through a vacuum impregnation process, and then forming a firm SiO2-ZrO2 layer on the surface of the cork particle after aging and freeze drying. On one hand, the ratio of silicon to zirconium is accurately controlled, the enhancement effect is maximized on the premise of avoiding particle aggregation, and the indentation damage resistance and wear resistance of the composite material are synergistically improved, and on the other hand, by regulating and controlling the volume ratio of the water-ethanol mixed solvent, the hydrolytic stability and the coating uniformity of sol are effectively improved, and the composite material has good application prospects. The bonding strength of SiO2-ZrO2 on a cork base is enhanced, the applicability of SiO2-ZrO2 to floors and wallboards is enhanced, and a reliable technical path is provided for development of high-performance environment-friendly building materials.

A high-dimensional stability flame-retardant wood-based panel, its preparation, and its application are disclosed. The preparation includes: placing the wood-based panel in an impregnation tank and injecting an aqueous solution of branched polyethyleneimine; removing the wood-based panel and drying it to allow the amino groups on the branched polyethyleneimine to undergo a grafting reaction with the hydroxyl groups on the wood; placing the wood-based panel in an impregnation tank and injecting an aqueous solution of 3-aminopropyltriethoxysilane; removing the wood-based panel and drying it to allow the unreacted amino groups on the branched polyethyleneimine grafted onto the wood to chemically react with the hydroxyl groups on the phosphate; and placing the wood-based panel in an impregnation tank and injecting an aqueous solution of 3-aminopropyltriethoxysilane to chemically react with the unreacted hydroxyl groups on the phosphate that have reacted on the branched polyethyleneimine to chemically react with the amino groups on the 3-aminopropyltriethoxysilane. This provides a wood-based panel that simultaneously satisfies flame-retardant properties and high dimensional stability.

The invention relates to wood furniture with mothproof, scratch-resistant and flame-retardant properties and a preparation method thereof, the wood furniture comprises a furniture body, and the furniture body is formed by assembling a plurality of pieces of wood; each piece of wood is subjected to pressurization soaking treatment through an insect-proof flame retardant; the surface of the furniture body is coated with a scratch-resistant layer; the scratch-resistant layer is formed by coating the surface of the furniture body with a scratch-resistant coating; according to the wood furniture, due to the dual-structure design of'internal insect-proof flame-retardant treatment and outer scratch-resistant coating ', organic combination of insect damage prevention, scratch resistance and flame retardance is achieved, and the wood furniture has lasting and comprehensive insect-proof performance and excellent scratch-resistant and flame-retardant performance.

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.

In a method for treating wood, wherein a wooden body is impregnated with a polymerizable compound which is polymerizable by oxidation, the polymerizable compound is brought into contact with an oxidizer in the wooden body in order to polymerize the polymerizable compound in situ. The polymerizable compound applied therein comprises a heterocyclic compound with nitrogen and / or sulphur as heteroatom. The oxidizer is brought into solution and the wooden body is saturated with a solution of the oxidizer. The wooden body is subjected to a vapour phase of the heterocyclic compound under an increased pressure and the heterocyclic compound is polymerized in situ in the wood.

The invention discloses an anti-bending and anti-fracture bamboo louver blade and a preparation process thereof, and belongs to the field of building decoration materials. In order to solve the problems that a traditional bamboo louver blade is prone to breakage and bending failure due to the fact that bamboo wood is low in cross grain strength and high in hygroscopicity, performance breakthrough is achieved through multi-dimensional synergistic modification. The preparation process comprises the following steps: selecting bamboo wood of 3-5 years old, cutting the bamboo wood, performing ultrasonic cleaning with sodium carbonate, treating linen fibers with acetic acid and a silane coupling agent, performing vacuum permeation and plastification with a glycerol-citric acid solution, constructing a bamboo wood-fibrofelt-bamboo wood three-layer composite structure, performing hot-pressing curing, and performing gradient drying, low-temperature circulation and beeswax-nano silicon dioxide coating edge sealing. Experiments show that the louver blade can resist bending for 5200 times, the elongation at break is 8.2%, the bending strength is 140 MPa, and the impact strength is 65 kJ / m < 2 >. Compared with a single reinforcing process of resin impregnation or recombined fibers, the bending fatigue resistance is improved by 32.7%-46.2% through cooperation of plasticizing modification, a laminated structure and surface protection, and the method is suitable for high-end building decoration scenes.

The invention relates to the technical field of forestry engineering, and discloses a high-pressure dipping processing device and method for improving bamboo performance, the high-pressure dipping processing device comprises a supporting assembly, a container assembly is arranged above the supporting assembly, the container assembly is used for containing bamboos needing high-pressure dipping, and an adjusting assembly is arranged in the container assembly. Through a liquid inlet pipeline, a liquid outlet pipeline, an air inlet pipeline and an air outlet pipeline in the container assembly, the effects of integrated equipment and reduction of the occupied space are achieved, then the synergistic effect of a first supporting plate, a second supporting plate and a clamping plate is utilized, adjacent and attached bamboo and wood materials can be dynamically separated, a second push rod drives the second supporting plate to transversely move, and the effect of separating the bamboo and wood materials is achieved. A first push rod is matched to control longitudinal adjustment of a clamping plate, a vacuum dead zone formed on the bamboo-wood contact surface can be effectively broken, a driving motor drives a cross plate to rotate, the contact area of bamboo wood and impregnation liquid is increased, and the problem of local impregnation rejection caused by traditional stacking impregnation is solved.

The invention relates to the technical field of artificial board processing, in particular to a preparation method of green low-toxicity flame-retardant plywood. The method comprises the following steps: S1, green synthesis and step-by-step dipping treatment of a complexing phosphorus-nitrogen flame retardant; s2, preparation of a flame-retardant adhesive and construction of an interface intumescent flame-retardant system; s3, stepped layered assembly and hot press molding; s4, conducting ion regulation and anti-rust treatment; wherein the complexing phosphorus-nitrogen flame retardant in the step S1 takes phosphorus and nitrogen as core flame-retardant elements and is synthesized through a complexing rapid reaction and cross-linking reaction technology, the reaction temperature is 80-100 DEG C, and the reaction time is 30-60 minutes; the mass ratio of the phosphorus-containing metal complex precursor to the nitrogen source compound to the chitosan to the catalytic substance is (2-3): (5-6): (1-3): (0.5-1). According to the flame-retardant plywood prepared through the method, the combustion rate growth index is smaller than 100 W / s, the 600-s total heat release amount is smaller than 7.0 MJ, the smoke generation rate index of the smoke generation characteristic is smaller than or equal to 30 m / s, the 600-s total smoke generation amount is smaller than or equal to 50 m, and multiple technical defects of traditional flame-retardant plywood are overcome.

This disclosure is directed to methods of separating wood veneer material by property measurements, and thereafter improving the properties of veneer material with property values lower than a target threshold value, until those materials meet or exceed that threshold values. In some aspects of the disclosure, veneer materials are prepared, non-destructively measured, and separated into passing and failing material collections. The failing material collection may then be treated to improve the density and flexural modulus of the material therein. Also disclosed herein are products and materials incorporating the treated veneer materials according to the disclosed methods.

The present invention relates to a method for obtaining a ligno-cellulosic composite material, a ligno-cellulosic composite material that can be obtained by this method, and the use of this ligno-cellulosic composite material.

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.

This invention discloses a wood-based composite phase change material and its preparation method, belonging to the field of phase change material technology. The preparation method of the wood-based composite phase change material is as follows: wood is cut and heated in a delignification solution, then removed and washed with water to obtain delignified wood; the delignified wood is added to a modification solution and heated, then removed, washed with water, and dried to obtain pretreated wood; polyethylene glycol, citric acid, and boric acid are mixed, heated, and stirred to obtain a phase change material; the pretreated wood is impregnated into the phase change material under vacuum, removed, and dried to obtain the final product; the modification solution is composed of an ethanol aqueous solution, a modified filler, 2-(3,4-epoxycyclohexane)ethyltrimethoxysilane, and triethylamine. This invention uses delignification solution and modification solution to pretreat the wood, thereby enabling better bonding with the phase change material and preventing leakage. The resulting wood-based composite phase change material has excellent thermal management capabilities and stability.

The present invention relates to an improved method for impregnating a porous material, such as wood, more specifically a method in which an active ingredient to be deposited within the porous material is dissolved in condensed carbon dioxide and impregnated in the material

This invention belongs to the field of red oak processing technology, and specifically relates to a processing method for removing red pigment from red oak, comprising the following steps: (I) Weighing 20-35 parts by weight of aminoethanol, 15-25 parts by weight of sodium bicarbonate, 8-15 parts by weight of hydrogen peroxide, 4-8 parts by weight of ammonia, 3-6 parts by weight of tannin, and purified distilled water, and mixing them evenly to obtain a stock solution; (II) Adding the stock solution obtained in step (I) and purified water to a mixing tank in a 1:2 ratio, controlling the temperature inside the mixing tank at 15-30°C, and stirring for 25 minutes to obtain a red pigment removal agent. This invention removes the red pigment from red oak while preserving the original wood texture to the greatest extent, resulting in a more natural and authentic finished product. It solves the problem that traditional bleaching agents easily damage the texture of red oak, destroy the lignin in the wood, and cause the wood to become brittle and deteriorate.

The invention discloses a smoke-suppressing low-toxicity flame-retardant floor board and a preparation method thereof. The method comprises the steps that S1, wood is placed in a mixed solution of imidazole diethyl phosphate and a Lewis acid catalyst, vacuum impregnation and heating and pressurizing impregnation are sequentially conducted, and the wood is drained after impregnation; the wood is sequentially placed in a chitosan solution, a metal salt solution and an alkaline solution to be subjected to pressure dipping, and complexing flame retardant modified wood is obtained after draining and washing; and S2, the complex flame retardant modified wood is soaked in a water-soluble charring agent solution, drained after being pressurized and soaked, washed with water and dried, and the flame retardant modified wood is obtained. The imidazole diethyl phosphate is obtained by carrying out condensation reaction on 1-(3-aminopropyl) imidazole and (formyl methyl) diethyl phosphate in a mass ratio of (0.5-0.7): 1. The problems that a current floor board is poor in flame retardant property durability, high in smoke density and low in carbon residue amount can be effectively solved.

The application relates to a preparation method of photocatalytic antibacterial plant fibers. The method comprises the following steps: In2S3 material preparation, PSMA copolymer preparation, thioacetamide preparation, antibacterial performance photocatalyst preparation and photocatalytic antibacterial plant fiber preparation. The photocatalytic antibacterial plant fibers are prepared by creatively combining a heating method, a rectification method, a mixing method, a drying method and a stirring method, and have the advantages of simple preparation process, excellent antibacterial performance, environmental friendliness and the like, and can be applied to multiple fields such as textile and garment, home decoration, medical treatment and health care.

This utility model belongs to the technical field of tree impregnation equipment, specifically relating to a high-efficiency osmotic pressure control device for resin-impregnated reinforced veneer. It includes a base, with a tree impregnation device fixed to its top. A control box, mounted on the top of the base, is located on the front side of the tree impregnation device. The control box and the tree impregnation device are electrically connected via a power cord. A protective component is connected between the bottom of the control box and the top of the base. This protective component protects the control box when not in use and also prevents the power cord from becoming tangled. When the control box needs protection during idle periods, the high-efficiency osmotic pressure control device of this utility model allows the closing plate to be moved to the left by an electric telescopic rod. This causes two guide sleeves to move the control box to the left into a protective box, ensuring the closing plate fits precisely against the opening on the right side wall of the protective box, thus protecting the control box.

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 invention discloses a color laminated board production process based on ultrahigh pressure dipping coloring, and belongs to the technical field of artificial board manufacturing. Firstly, high-temperature heat treatment is conducted on a wood veneer, and the pore structure of the wood veneer is optimized; then preparing a functionalized colored resin adhesive containing nanoscale coloring; the key step adopts a synergistic ultrahigh-pressure impregnation technology, so that resin deeply permeates into a wood cell wall layer, and coloring and reinforcing are integrated; and finally, the dipped wet-state veneer is subjected to one-time forming in a directional assembly and hot pressing process. Traditional dyeing and intermediate drying links are thoroughly omitted, dyeing wastewater is completely eradicated from the source, the process is remarkably shortened, and energy consumption is reduced. The obtained product has excellent physical and mechanical properties, extremely high dimensional stability and lasting color weather resistance, and is suitable for manufacturing high-end outdoor building materials and furniture.

The invention relates to the technical field of wood processing and functional modification, and discloses a biological modification preparation method of a flame-retardant and moisture-proof plant-based board, which comprises the following steps: firstly, preparing a modification liquid containing phytic acid, a boron source trapping agent, metal salt and plant triglyceride; immersing the plant fiber veneer, adding laccase and lipase, and carrying out vacuum pressure impregnation; then constant-temperature incubation is conducted, lipase is used for catalyzing hydrolysis of triglyceride, the product glycerol is captured in situ to generate flame-retardant glyceryl borate, fatty acid and metal ions are combined to generate hydrophobic metal soap, and meanwhile laccase activates the surface of lignin of the veneer; and finally, carrying out gradient drying and hot press molding to obtain a finished product. Through enzymatic cascade reaction, a compact hydrophobic barrier and a heat-resistant cross-linked network are constructed in the deep layer of the plate, and the self-gluing effect of laccase is cooperated, so that formaldehyde-free manufacturing is realized, and the flame-retardant grade, the water-resistant and moisture-proof performance and the mechanical stability of the plate are improved.

Provided is a wood-preserving treatment solution comprising: an organic solvent that includes 1-chloro-2,3,3,3-tetrafluoropropene; and a wood preservative.

The utility model relates to wood dipping treatment vacuum pressurization equipment which comprises a dipping bin, a baffle is horizontally arranged in the middle of the interior of the dipping bin, the side of the baffle is fixedly connected with the inner side wall of the dipping bin in a static sealing mode, and a plurality of dipping grooves are formed in the top side of the baffle. A control piece is arranged in the dipping tank; the control piece comprises a groove hole, a liquid passing pipe, a liquid passing hole, a liquid passing groove, a liquid passing column, a liquid inlet hole and a liquid outlet hole. The utility model relates to the technical field of wood dipping. When the vacuum pressurization equipment for wood dipping treatment is used, after wood is in a negative pressure environment and air in the wood is pumped away under the assistance of negative pressure, the wood can adsorb a solution again through the negative pressure environment, the solution only passes through the wood, and then dipping of the wood by the solution is accelerated; therefore, the subsequent pressurizing step is omitted, and the wood dipping efficiency is improved.

The invention discloses a preparation method and application of self-healing wood, and belongs to the technical field of wood processing. The preparation method of the self-healing wood comprises the following steps: firstly, synthesizing a polymer containing a steric hindrance urea bond, taking hydroxyl-terminated polymer dihydric alcohol, diisocyanate and N, N '-di-tert-butylethylenediamine as raw materials, and carrying out prepolymerization, chain extension and grafting to obtain the self-healing wood; secondly, delignification treatment is conducted on the wood twice, specifically, the wood is treated with a sodium sulfite / sodium hydroxide solution at the temperature of 80-100 DEG C for 4-8 hours and then treated with a hydrogen peroxide solution at the temperature of 70-90 DEG C for 4-8 hours; and then the wood is subjected to vacuum impregnation with a polymer for 8-24 h, curing is conducted at the temperature of 70-90 DEG C, hot-pressing reinforcement is conducted at the temperature of 80-100 DEG C and the pressure of 10-20 MPa, and the self-healing wood is obtained. Through reaction of isocyanate groups on large-steric-hindrance urea bonds and hydroxyl groups on cellulose, medium-temperature efficient repairing is achieved, the compressive strength can be restored to the original wood standard level, the strength improving effect is achieved, and the method is suitable for the fields of wood repairing and bearing wood components.

The invention relates to methods for preparing modified wood and wood products, including methods to fortify wood by increasing the strength and / or density of wood so as to yield a fortified wood or wood product. The methods can be used to, for example, improve the performance, alter the appearance, and / or improve the durability of wood, and particularly, solid wood. The methods comprise a combination of resin and thermal treatments to yield modified wood and modified wood products.

A cross-linked reinforced flame-retardant decorative panel and its preparation method are disclosed. The cross-linking reinforcement ensures both flame-retardant and adhesive properties. The preparation includes: impregnating wood veneer in a mixture of thiourea and ammonium polyphosphate under pressure; then impregnating it in an aqueous solution of trisodium methylglycine diacetate; then impregnating it successively in an aqueous solution of Fe(NO3)3 and KH560; drying to obtain a flame-retardant wood board; mixing a modified urea-formaldehyde resin adhesive with flour, applying the adhesive to the flame-retardant wood board to form an adhesive layer, covering the adhesive layer with decorative wood veneer, and pressing the board. Modified adhesive preparation: formaldehyde, xanthan gum, and OP-10 are mixed and stirred, the pH is adjusted to 7.7–8.2, the temperature is increased, and stirring continues; the first batch of urea is added, the temperature is increased, and stirring continues until the pH reaches 5.7–5.9, then the mixture is cooled; the remaining urea is added, and stirring continues, after cooling, the pH is adjusted to 7.7–8.2, and stirring is stopped.