404results about "Pressure impregnation" patented technology

The invention discloses a high-quality formed ginkgo wood furniture manufacturing and processing technology, and relates to the technical field of furniture production, and the high-quality formed ginkgo wood furniture manufacturing and processing technology comprises ginkgo wood selection, ginkgo wood treatment, wood modification, part processing and surface treatment. Before drying, the cut ginkgo biloba boards are subjected to primary treatment, surface impurities are removed, and primary balance treatment is carried out, so that stress concentration in the later drying process is reduced; primarily drying the primarily treated wood, adjusting the thickness and the drying temperature and humidity of the wood, adjusting the temperature in the drying chamber according to the thickness and the initial water content of the wood by using a combined drying technology, and controlling the distance between the wood to be 1 / 10-1 / 8 of the width of the wood through a circulating air drying system. By means of the combined drying technology, dynamic control over the ginkgo wood drying quality is achieved, the problems that the drying process is complex and wood is prone to warping or cracking during drying are solved, the drying period is shortened, wood deformation and cracking are reduced, the physical performance of the wood is improved, and the drying efficiency is improved.

This invention discloses an electrically heated bamboo-wood composite particleboard, an electrically heated floor based thereon, and a method for preparing the same. The electrically heated bamboo-wood composite particleboard of this invention is a multi-layered bamboo-wood structure particleboard with electrothermal function, and the board has a centrally symmetrical structure. The electrically heated bamboo-wood composite particleboard includes an upper surface layer, an upper reinforcing layer, an electrothermal layer, a lower reinforcing layer, and a lower surface layer. The upper and lower surface layers are composed of wood shavings, the upper and lower reinforcing layers are composed of large, thin wood shavings, and the electrothermal layer is composed of modified bamboo shavings. These modified bamboo shavings are obtained by impregnating bamboo shavings in sodium hydroxide, modifying them, and then carbonizing them. The electrically heated bamboo-wood composite particleboard prepared by this invention has enhanced bonding strength, good insulation performance, and high safety; it has the same dimensions as conventional flooring, making it easy to lay; and multiple points of electricity ensure uniform heating of the board.

The invention discloses a treatment method for preventing artificial forest castanopsis hystrix from cracking and deforming. The treatment method comprises the following steps: (1) drying; (2) balancing; (3) dipping; (4) heat treatment; and carrying out ventilation balance on the heat-treated plate in a natural environment for 2 weeks to obtain the heat-treated plate. The modifier adopted in the method is good in thermal stability, a staged heat treatment mode is adopted, the drying efficiency of the modified material is improved, the modifier is fully cured, meanwhile, the plate is subjected to heat treatment, the size stability of the plate is further improved, and the cracking deformation preventing castanopsis hystrix plate is obtained; furthermore, the method is simple and convenient to operate, large-batch treatment can be achieved, and the obtained artificial forest castanopsis hystrix modified material capable of preventing deformation and cracking is resistant to water and moisture, stable and resistant to cracking.

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 relates to the technical field of sound absorption materials, in particular to an aerogel and cork composite sound absorption material with a dual-scale pore structure and a preparation method. The preparation method of the aerogel-softwood composite sound absorption material with the double-scale pore structure comprises the following steps that softwood particles subjected to microwave treatment are placed in a SiO2 aerogel precursor solution to be subjected to vacuum impregnation treatment, then hydrolysis and condensation polymerization are conducted, a three-dimensional network structure is formed through crosslinking, freeze drying is conducted after water soaking, and the aerogel-softwood composite sound absorption material with the double-scale pore structure is obtained. SiO2 aerogel and cork composite particles are obtained; and spraying a polyurethane adhesive into the SiO2 aerogel and cork composite particles, and then carrying out hot press molding to obtain the aerogel and cork composite sound absorption material with the dual-scale pore structure. According to the preparation method, microwave treatment and dipping treatment are combined, so that the sound absorption performance of the prepared aerogel and cork composite sound absorption material with the double-scale pore structure is improved, and the problem that sound absorption is not facilitated due to the unique cell structure of cork is solved.

The invention belongs to the technical field of wood modification, and particularly relates to an in-situ impregnation wood flame retardant treatment method which comprises the following steps: preparing a water-based carbon source solution; preparing a three-source integrated flame retardant; preparing a metal salt solution; preparing a flame retardant solution; preparing flame-retardant modified wood: putting the wood into a metal salt solution, carrying out primary vacuum negative-pressure impregnation, and drying until the moisture content of the wood is 20-50%, so as to obtain a flame-retardant modified wood semi-finished product I; placing the flame-retardant modified wood semi-finished product I in a flame retardant solution, and carrying out second vacuum negative pressure impregnation to obtain a flame-retardant modified wood semi-finished product II; and drying the flame-retardant modified wood semi-finished product II to obtain a flame-retardant modified wood finished product, namely the modified wood composite material. The prepared modified wood has flame retardance and smoke suppression performance. The phytic acid metal salt can be effectively attached to the interior of the modified wood, the smoke adsorption effect is achieved, and the method has important value for wood utilization and processing and wood material diversification.

The invention relates to the technical field of energy conservation and environmental protection, and particularly discloses a preparation method of heat-insulating hydrophobic wood, which comprises the following steps: S1, mixing a silicon source and acid as raw materials to prepare silica sol, then adding an alkaline solution to prepare gel, and aging; s2, mashing the aged gel, adding hexamethyldisiloxane and hydrochloric acid for hydrophobic modification, cooling and standing after modification, discharging modified waste liquid at the lower layer, and filtering and drying a gel solution at the upper layer to obtain modified silicon dioxide aerogel powder; and S3, the modified silicon dioxide aerogel powder obtained in the S2 is added into ethyl alcohol to be evenly mixed, the dried wood is added for vacuum impregnation, drying is conducted after impregnation is completed, and the heat-insulation hydrophobic wood is obtained. The wood obtained through the method has good heat insulation and hydrophobic performance, and the size stability and mechanical performance of the wood can be effectively enhanced.

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, 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 invention provides a special recombinant material applied to the fields of liquefied petroleum gas (LPG), liquefied ethylene gas (LEG), liquefied natural gas (LNG) A / B / C type independent liquid cargo tanks and part of low-temperature pipeline supports and a manufacturing method of the special recombinant material. The invention provides a manufacturing method of a special recombined material for the ultralow-temperature field. The manufacturing method comprises the steps of selection of a veneer tree species and an adhesive, determination of the thickness of a veneer and the adhesive applying amount, and rapid gum dipping and hot pressing of a thick veneer. According to the manufacturing method provided by the invention, the vacuum high-pressure impregnation adhesive is adopted, so that the effects of high impregnation efficiency, large impregnation amount and uniform resin distribution can be realized; and a temperature sensor and a pressure sensor are installed, so that early warning can be carried out in advance when abnormity occurs. The special recombinant material has excellent mechanical properties such as water resistance, compression resistance, bending resistance and shearing resistance at room temperature and ultralow temperature (-163 DEG C). The special recombinant material provided by the invention can be used for liquid cargo hold pressure-bearing wood of LPG, LEG and LNG ships and part of low-temperature pipeline brackets.

The invention belongs to the field of wood modification, and relates to plastic wood, a preparation method thereof and application of the plastic wood in preparation of acoustic materials. The technical problems that in the prior art, wood is insufficient in flexibility and plasticity, the preparation process is complex, and the cost is high are solved. The invention provides a preparation method of plastic wood, which comprises the following steps: removing lignin from log to obtain pretreated wood; the wood is put into an epoxy soybean acrylate solution to be soaked, the concentration of epoxy soybean acrylate ranges from 10 wt% to 40 wt%, and the soaked wood is obtained; and the flexibility and plasticity of the obtained plastic wood are improved, and the dimensional stability is improved. Meanwhile, aiming at the technical problems that in the prior art, an acoustic material is too large in dead weight and difficult to update, low-frequency sound wave dissipation capacity is poor, the environment is polluted, and human health is harmed, the invention further provides a preparation method of the acoustic material, and the defects of a traditional sound insulation material are overcome while the performance requirement is met. The invention further provides application of the plastic wood and the acoustic material.

The utility model provides a vacuum soaking device for low-temperature-resistant laminated wood production, which belongs to the technical field of low-temperature-resistant laminated wood production and comprises a supporting seat and a reaction tank, the reaction tank is fixedly mounted at the top of the supporting seat, a sealing cover is movably mounted at the top of the reaction tank, a vacuum chamber is arranged in the reaction tank, and the sealing cover is arranged in the vacuum chamber. A containing frame is fixedly installed in the vacuum chamber, a plurality of separation rods are fixedly connected into the containing frame, the containing frame is divided into a plurality of containing cavities through the separation rods, and ejector pins are fixedly connected to the bottoms of the containing cavities. Through the arrangement of the placing frames, workpieces can be respectively placed in the placing cavities, a plurality of workpieces are prevented from being stacked together, the bottoms of the workpieces are also jacked up by the ejector pins, the contact area of the outer surfaces of the workpieces is greatly reduced, the soaking process of the workpieces can be completed in a short time, and therefore the production efficiency is improved, and the production cost is reduced. The soaking effect is improved.

The invention discloses a self-repairing type phase change microcapsule and application thereof in a wood-based energy storage wall, the self-repairing type phase change microcapsule is characterized in that an inner core layer is composed of composite paraffin and butyl stearate composite phase change materials, gradient refractive index silicon dioxide microspheres are arranged on the surface of the inner core layer, and a middle shell layer is a composite film formed by polyurea and furan-epoxy monomer copolymer; the reinforced shell layer is of a three-dimensional network structure which is formed by nano SiO2 through a sol-gel method, has the porosity of 20-25% and is in gradient distribution; according to the invention, a three-dimensional network structure formed by a Diels-Alder dynamic bonding network of a middle shell layer and nano SiO2 of an enhanced shell layer is used for synergistically constructing a self-repairing system of the microcapsule, so that the self-repairing function of the phase change microcapsule material is realized, the defect of failure caused by physical damage of the microcapsule is avoided, and the service life of the phase change microcapsule material is prolonged. And meanwhile, through gradient packaging preparation of the inner core layer and the enhanced shell layer, the problem of thermal stress concentration is effectively solved.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a P-N flame retardant as well as a preparation method and application thereof. The preparation method of the P-N flame retardant comprises the following steps: (1) taking amino trimethylene phosphonic acid and adding a solvent for dilution; (2) adding 1, 3, 5-tri (2-ethoxyl) 1, 3, 5-triazine-2, 4, 6-triketone into the solution obtained in the step (1), and carrying out a constant-temperature oil bath reaction for 2-5 hours to obtain a P-N flame retardant precursor solution; (3) preparing an aqueous solution of an amino compound; and (4) dropwise adding the P-N flame retardant precursor solution into an aqueous solution of an amino compound, carrying out constant-temperature oil bath reaction for 5-10 minutes to generate white precipitates, continuing to react for 0.5-1 hour after the precipitates are generated, washing, carrying out suction filtration on the precipitates, and drying to obtain the P-N flame retardant. The P-N flame retardant disclosed by the invention is a white solid which is almost insoluble in water at normal temperature, and has a good flame retardant effect on a bio-based material.

The invention discloses a preparation technology of plywood with waterproof and flame-retardant performance, and relates to the technical field of plywood preparation, the preparation technology comprises the steps of S1, wood veneer pretreatment, S2, steeping liquor preparation, S3, veneer steeping and curing, S4, adhesive modification, S5, assembly and hot pressing, and S6, maintenance treatment. The nano composite coating with flame-retardant and hydrophobic functions is constructed through chemical reaction of phytic acid and the silane coupling agent, phosphate groups in the phytic acid provide flame retardance through catalytic carbonization, a hydrophobic silicon dioxide network is formed after the silane coupling agent is hydrolyzed, and the hydrophobic silicon dioxide network is combined with wood fibers through chemical bonds, so that long-acting water resistance is achieved, and the flame-retardant and hydrophobic functions are achieved. The contradiction that the traditional flame retardant is easy to absorb moisture and lose efficacy and the waterproof agent is poor in flame retardance is solved.

The invention belongs to the technical field of wood modification, and particularly relates to a carbon quantum dot optimized furfuryl alcohol modified material and a preparation method thereof. The preparation method comprises the following steps that wood is treated with carbon quantum dot / furfuryl alcohol modified liquid through a vacuum pressurization impregnation method, then the wood is wrapped with a high-temperature-resistant waterproof material, and aging is conducted at the room temperature. And finally, the wood is heated and cured, and therefore the carbon quantum dot optimized furfuryl alcohol modified material is obtained. According to the carbon quantum dot / furfuryl alcohol modified liquid, the carbon quantum dots serve as a catalyst to catalyze curing of furfuryl alcohol in wood and also serve as a wood modifier to endow the wood with excellent corrosion resistance, and multiple effects are achieved through one agent. According to the carbon quantum dot optimized furfuryl alcohol modified material, the problem that the toughness of the furfuryl alcohol modified material is reduced is solved, overall balance and optimization of the dimensional stability, the strength, the toughness and the biological degradation resistance of wood are achieved, and the problem that the material color of the modified material is blackened is solved.

The invention provides a modification method for improving the size stability of rubber wood and a modified material and application thereof, and relates to the field of rubber wood processing. The modification method comprises the following steps: 1, mixing choline chloride with a hydrogen bond donor compound containing carboxyl to obtain a DES solvent, and adding water to obtain a DES solution; secondly, the rubber wood plate is put into the DES solution in the first step, pressurized dipping treatment is carried out, and then the rubber wood plate is taken out and aired; and thirdly, the rubber wood treated in the second step is placed at the temperature of 150-160 DEG C to be subjected to heat treatment for 1-2 h, and the rubber wood DES modified material is obtained and placed under the room temperature condition to be balanced. The modification method is simple and easy to operate, the hygroscopicity of the rubber wood is remarkably reduced, the dimensional stability of the rubber wood is improved, the modification liquid can be repeatedly used, and cost saving and efficiency increasing are achieved. The environment-friendly and performance bottlenecks of a traditional method are solved, a new way is opened up for efficient value-added utilization of rubber wood, and the strategic requirement of sustainable material development is met.

The invention belongs to the technical field of flame-retardant materials and composite boards, and particularly relates to a halloysite-based intumescent flame-retardant early-warning impregnation liquid as well as a preparation method and application thereof. A halloysite-based intumescent flame retardant prepared from melamine, adenosine triphosphate and halloysite nanotubes and a flame-retardant early-warning steeping liquor obtained by mixing graphene oxide are introduced into delignified wood, and then the flame-retardant densified wood integrating flame retardance, early warning and high mechanical strength is prepared. The flame-retardant wood has the characteristics of efficient flame retardance, intelligent fire early warning, excellent mechanical property and the like, widens the application range of wood and products thereof in the fields of buildings, home furnishing and the like, and has important significance for protecting life and property safety of people.

The invention belongs to the technical field of wood functional modification, and discloses a metal organic framework material and a preparation method thereof, and metal organic framework composite wood and a preparation method thereof. The metal organic framework material is prepared from the following raw materials in parts by mass: 50 to 100 parts of copper ion solution, 10 parts of 1, 3, 5-benzenetricarboxylic acid, 80 to 100 parts of organic solvent, 80 to 100 parts of ethanol and 10 to 15 parts of long-chain alkyl modifier. In addition, the treated metal organic framework material is obtained by combining the metal organic framework material with a pressure impregnation process of specific steps. The MOFs material provided by the invention is simple in component and relatively low in production cost, the MOFs modified by long-chain alkyl are high in hydrophobicity and not prone to agglomeration, the process for treating materials such as wood is simple, and the effect is excellent; the obtained wood has the performance of adsorbing volatile organic compounds (VOC).

The utility model discloses anti-corrosion treatment equipment for oil wood poles, and relates to the technical field of oil wood pole processing equipment, the anti-corrosion treatment equipment comprises a tank body, the bottom end of the inner cavity of the tank body is fixedly connected with a placing groove plate, the inner cavity of the tank body is provided with a stacking mechanism, and the stacking mechanism comprises a stacking plate, side stop levers and storable supporting rollers; the bottom ends of the supporting rollers capable of being stored are movably connected to the top of the containing groove plate, the stacking plate is fixedly connected to the top ends of the supporting rollers capable of being stored, the side stop rods are fixedly connected to the outer side of the stacking plate, a cleaning mechanism is arranged in an inner cavity of the tank body, and the cleaning mechanism comprises a driving motor, a threaded rotating rod and a scraping plate. According to the anti-corrosion treatment equipment for the oil wood pole, the problems that in the actual using process of existing equipment, wood is inconvenient to place in an inner cavity of a tank body, anti-corrosion materials left at the bottom of the inner cavity of the tank body cannot be completely removed and are inconvenient to clean, and the anti-corrosion materials are prone to being wasted are solved.

The invention belongs to the technical field of wood flame-retardant modification, and particularly relates to a metal-based ionic liquid compound flame retardant and a method for preparing flame-retardant wood by using the same. The preparation method comprises the following steps: putting 1-methylimidazole and tributyl phosphate into a reaction container, heating, condensing and refluxing to obtain an ionic liquid flame retardant containing 1-butyl-3-methylimidazole dibutyl phosphate; wood is sequentially soaked in a solution containing trivalent metal ions and an ionic liquid flame retardant, the metal ionic liquid flame retardant is generated in gaps of the wood in situ, and the smoke abatement type flame retardant modified wood can be prepared through drying in the shade, drying and water balance. The imidazolium ionic liquid and the metal trivalent ions are subjected to complexation reaction in the wood to form the metal type ionic liquid flame retardant, the purposes of smoke abatement, flame retardance, loss resistance and the like are achieved, and the application of the wood flame retardant technology and flame retardant wood products is expanded.

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 relates to the technical field of cooling filler, in particular to modified bamboo wood and a preparation method and application thereof. The dried bamboos are subjected to vacuum pressure dipping treatment in the modification solution, so that nano silicon dioxide particles and nano aluminum oxide particles can permeate into the cell cavities of the bamboos, meanwhile, the structure and shape of the bamboos are not affected, the nano silicon dioxide particles and the nano aluminum oxide particles are combined with the cell cavities of the bamboos through hydrogen bonds, and therefore the cell cavities of the bamboos can be modified. The method has the advantages that the temperature of the bamboo can be changed by the aid of the temperature of the bamboo, accordingly, binding force among bamboo molecules can be enhanced, vibration and movement of the molecules can be ordered when the bamboo is heated, the temperature of the bamboo can be changed by the aid of more energy, and the specific heat performance of the modified bamboo can be improved. Besides, the nano silicon dioxide particles and the nano aluminum oxide particles permeating into the cell cavities of the bamboo wood can increase heat storage sites, so that the overall heat storage capacity of the modified bamboo wood is improved, the specific heat performance of the modified bamboo wood is improved, and the technical problem that the specific heat performance of existing bamboo wood is insufficient can be solved.

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 discloses long-term yellowing-resistant transparent wood and a preparation method thereof. Comprising the following steps that firstly, delignification veneers are treated through acid-base combination to serve as filling materials; secondly, placing the delignified veneer in an alicyclic epoxy resin impregnation liquid for vacuum impregnation; and finally, curing and forming are conducted, and the yellowing-resistant transparent wood is prepared. The transparent wood has the advantages of high light transmittance, excellent long-term ultraviolet resistance and excellent high-temperature yellowing resistance. The composite material is widely applicable to the fields of building external windows, skylights, photovoltaic panel substrates, automobile window glass, high-end home decoration materials and the like, and has a remarkable application prospect.

The invention discloses a preparation method of flame-retardant recombined bamboos. The preparation method comprises the steps that bamboo chips are put into an alkaline solution to be treated; immersing the bamboo chips into a NaIOO solution for reaction, and then putting the bamboo chips into a NaClO solution for reaction; the bamboo chips are put into a nano-cellulose, montmorillonite and sodium silicate ternary composite solution to be subjected to vacuum impregnation and normal-pressure impregnation; the bamboo chips are put into phenolic resin to be subjected to normal-pressure impregnation and vacuum impregnation, and then low-temperature drying is conducted; and the bamboo chips are laid in a mold in parallel in the grain direction, cold press forming is conducted, then hot pressing is conducted, and finally pressure reduction and cooling are conducted in stages till demolding is conducted. Nano montmorillonite is uniformly dispersed in a sodium silicate solution by using carboxylated nano cellulose, and inorganic components of montmorillonite and sodium silicate can be uniformly and firmly constructed on the surface of a bamboo chip which is pretreated by an alkaline solution and oxidized by NaIOO and NaClO solutions by abundant carboxyl groups under the action of hydrogen bonds, covalent bonds and the like, so that a compact layered network structure is formed; and the flame retardant property of the recombined bamboo is effectively improved.

The invention belongs to the technical field of wood processing, and particularly relates to flame retardant loss-resistant efficient flame-retardant wood and a preparation method thereof.The preparation method comprises the steps that phytic acid and amino acid are put into a reaction container, and heating, condensation and reflux are conducted to obtain NP flame retardant liquid; the preparation method comprises the following steps: mixing n-hexane, polydimethylsiloxane, 1H, 1H, 2H, 2H-perfluorodecyl triethoxysilane and nano silicon dioxide according to a certain sequence and proportion, putting the mixture into a reaction container, and stirring to obtain Si-rich flame retardant liquid; the preparation method comprises the following steps: sequentially dipping the NP flame retardant into raw material wood, coating the Si-rich flame retardant on the raw material wood, drying in the shade, drying, and balancing water to obtain the flame-retardant wood. According to the invention, the synergistic flame-retardant and loss-resistant effects of the NP flame retardant and the Si-rich flame retardant are utilized, so that the purposes of flame retardance, smoke suppression and loss resistance are achieved, and the application of the nitrogen-phosphorus-silicon composite flame retardant as a wood flame retardant is expanded.

The invention discloses a preparation method of a high-humidity-resistant wood-based friction nano-generator, and relates to a preparation method of a friction nano-generator. The invention aims to solve the problems that the existing natural wood has anisotropy, poor conductivity and poor friction polarity and cannot be directly applied to a friction nano-generator; the problems that modification treatment adopted when wood serves as a friction material in the prior art causes harm to the environment and is extremely poor in biocompatibility, and the output performance of a wood-based friction nanometer generator is prone to being affected by high humidity are solved. The method comprises the following steps: 1, preparing a friction material; 2, preparing an electrode material; and 3, assembling the wood-based friction nano generator. The preparation method is used for preparing the high-humidity-resistant wood-based friction nanometer generator.

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.