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333results about "Open tank impregnation" patented technology

Phase-change energy storage heat-insulation solid wood and manufacturing method thereof

The invention provides phase-change energy storage heat-insulation solid wood. The wood comprises a solid wood component, wherein magnetic Fe3O4 nanoparticles are formed in a conduit and a cell cavity of the solid wood component through in-situ attached growth, and the conduit and the cell cavity are filled with composite phase-change energy storage materials of polyethylene glycol 600 and polyethylene glycol 800; and a protective coating is painted on the surface of the heat-insulation solid wood. The heat-insulation solid wood is capable of absorbing heat to withstand excessive rise of an indoor temperature during the day, releasing phase-change latent heat for thermal retention and cold dispelling during the night, and maintaining a human body within a comfort temperature range. The invention further provides a manufacturing method of the heat-insulation solid wood. The method comprises the steps of firstly processing the solid wood component according to the required dimension; carrying out degreasing and drying pretreatment on the solid wood component, forming the magnetic Fe3O4 nanoparticles in the solid wood component through in-situ attached growth and then impregnating and filling the composite phase-change energy storage material of the polyethylene glycol 600 and the polyethylene glycol 800; and finally carrying out sanding shaping and painting the protecting coating. According to the manufacturing method, the process is simple and the cost is low.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY

Flame-retardant impregnated film adhesive facing artificial board and manufacturing method thereof

The invention discloses a flame-retardant impregnated film adhesive facing artificial board and a manufacturing method thereof. The flame-retardant impregnated film adhesive facing artificial board mainly comprises a flame-retardant core board, flame-retardant middle boards and an impregnated film adhesive layer; the upper surface and the lower surface of the flame-retardant core board are bondedwith the flame-retardant middle boards through glue, after the flame-retardant core board and the flame-retardant middle boards are pressed, a flame-retardant base material layer is obtained, the upper surface and the lower surface of the flame-retardant base material layer are bonded with impregnated film adhesive layers through glue, and after the flame-retardant base material layer and the impregnated film adhesive layers are subjected to pressing, compounding, edge aligning, a finished product is obtained. In addition, flame-retardant wood veneer layers are included and adhere to the uppersurfaces and the lower surfaces of the flame-retardant middle boards so that the thickness and/or the flatness of the base material layer can be adjusted. The flame-retardant impregnated film adhesive facing artificial board and the manufacturing method thereof have the beneficial effects that a flame-retardant impregnating method and a flame-retardant adhesive agent method are suitable for various wood boards, independent using and combined using can be achieved, and the general applicability is high; and in addition, the method operation process is simple, the treatment cost is low, large-size equipment does not need to be additionally arranged, and the product appearance effect cannot be influenced.
Owner:DEHUA TB NEW DECORATION MATERIAL CO LTD

Method for manufacturing high intensity plywood for engineering structure by utilizing fast growing wood

The invention provides a method for manufacturing high intensity plywood for an engineering structure by utilizing fast growing wood. The method comprises the following steps of (1) single plate rotary cutting, (2) modified liquid preparation, (3) single plate reinforced processing, (4) gluing assembly prepressing, (5) plate blank hot press forming, and (6) veneering or film covering processing. The method for manufacturing the high intensity plywood for the engineering structure by utilizing the fast growing wood has the advantages that firstly modified liquid reinforced processing is carried out on the single plates of the fast growing wood, the intensity of the single plates of each layer is improved to a large extent, the reinforcing degree of the single plates can be adjusted through the weight gain rate of the single plates, and the weight gain rate of the reinforced single plates can be reduced from outside to inside in a graded mode to save cost and fully perform the intensity performance of single plates of all layers; thus, plywood products gain extremely high static bending intensity, elasticity modulus and surface hardness under the condition of a low compression rate, the thickness swelling rate of the products is small, the dimensional stability of the products is good, and reinforcer gives the products good rotproofness and weather resistance at the same time.
Owner:NANJING FORESTRY UNIV +1

Method for preparing bamboo beam columns

ActiveCN106625921AMaximum environmental protectionMeet the basic requirements of beams and columnsPressure wood treatmentWood treatment detailsInternal stressBeam column
The invention provides a method for preparing bamboo beam columns. The method includes the steps that a piece of bamboo wood is selected; selected bamboo is sawed into a bamboo tube with the length being 3-8m, and then splitting is performed as required so that long-bar-shaped bamboo chips can be obtained; the long-bar-shaped bamboo chips are subjected to bamboo green and bamboo inner skin removing treatment; then the bamboo chips subjected to bamboo green and bamboo inner skin removing treatment are placed into a solution containing 0.2%-1% of hydrogen peroxide for cooking, and the bamboo chips are drained off after being cooked and placed into a drying shed to be dried; afterwards, the bamboo chips are subjected to shaping, glue dipping, blank formation and glue replenishing so that preliminarily-formed hollow bamboo columns can be obtained; the preliminarily-formed hollow bamboo columns are mold-filled, heated and cured, and the heated and cured bamboo columns are placed in a normal pressure and temperature environment for nourishing, so that internal stress is removed; then a center winding rod is drawn out of the middle part of each bamboo column; and finally, a mold is opened to take out each bamboo column, and the bamboo columns taken out refer to complete and hollow bamboo beam columns. The bamboo beam columns prepared through the method enable the environmental protection performance of the bamboo wood to be reflected maximally in construction, and meanwhile the basic requirements of large-sized housing construction beam columns can be met.
Owner:浙江业友机械有限公司

Preparation method for self-illumination wood capable of simultaneously storing heat energy and light energy

The invention discloses a preparation method for self-illumination wood capable of simultaneously storing heat energy and light energy, relates to a preparation method for the energy-storage self-illumination wood, and aims to solve the problem that the wood capable of simultaneously storing heat energy and light energy cannot be prepared at present. The method comprises the following steps: 1, dipping the wood into mixed solution of sodium hydroxide and sodium sulfite, heating to the boiling point, and washing to obtain delignify wood; 2, dipping the delignify wood into hydrogen peroxide solution to be bleached to obtain the bleached wood; 3, mixing rare earth aluminate illumination materials with a molten phase change material to obtain the mixture of the rare earth aluminate illumination material and the phase change material, dipping the bleached wood into the mixture of the rare earth aluminate illumination material and the phase change material to be kept, and obtaining the self-illumination wood capable of simultaneously storing heat energy and light energy. The invention discloses the preparation method for the self-illumination wood capable of simultaneously storing the heat energy and the light energy.
Owner:NORTHEAST FORESTRY UNIVERSITY

Preparation method for garden outdoor preservative wood

The invention discloses a preparation method for garden outdoor preservative wood and belongs to the technical field of garden greening. The preparation method comprises the steps that poplar which is cheap and easy to get serves as a raw material, and the poplar is soaked with a tetrabutyl titanate ethanol solution after being naturally dried in the air, so that the solution is absorbed by cells, in the program warming and carbonization processes, nutritional components inside the poplar are carbonized, ethanol is volatilized, and tetrabutyl titanate is hydrolyzed into titanium dioxide which serves as an antibiotic component and is dispersed into wood fibers; the pretreated poplar is then soaked with magnesium sulfate and subjected to liquid nitrogen freezing and soaking unfreezing, so that the solution fully enters the wood fibers; the poplar is then fumigated with high-pressure ammonia, so that magnesium salt crystal whiskers are formed inside the wood fibers, and the purpose of improving the wood strength is achieved; and the garden outdoor preservative wood is finally obtained through drying. The garden outdoor preservative wood obtained through the preparation method is free of pollution to water and soil in the using process, excellent in preservative performance and capable of effectively resisting encroachment of fungi, bacteria and moths, is a safe, natural and environment-friendly preservative and moth-proof building material and can be widely applied and popularized.
Owner:珠海经济特区园海绿化工程有限公司

Method for preparing insect-resistant damp-proof wood veneer

The invention discloses a method for preparing insect-resistant damp-proof wood veneer. The method includes steps of A, grinding pine bark to obtain pine powder; B, grinding beech shavings to obtain beech powder; C, placing the pine powder and the beech powder into stirring barrels, uniformly mixing the pine powder and the beech powder with each other to obtain first mixtures, adding distilled water into the first mixtures, stirring the distilled water and the first mixtures, and sequentially adding camphor wood powder, mica powder, nanometer aluminum oxide powder and glass fibers into the distilled water and the first mixtures in stirring procedures to obtain second mixtures; D, sequentially adding flame retardants, adhesive and drying agents into the stirring barrels, stirring the flameretardants, the adhesive, the drying agents and the second mixtures and filling the stirring barrels with nitrogen in stirring procedures; E, pouring materials obtained at the step D into molds, carrying out compression molding by the aid of molding machines and carrying out mold release to obtain wood veneer semi-finished products; F, placing the wood veneer semi-finished products obtained at thestep E into drying ovens and carrying out drying treatment to obtain wood veneer finished products. The method has the advantage that excellent insect-resistant effects and excellent damp-proof effects can be realized by the insect-resistant damp-proof wood veneer prepared by the aid of the method.
Owner:湖州韵高木业有限公司

Outdoor bamboo wood natural mould-proof corrosion-proof agent and preparation and treatment methods thereof

The invention relates to the technical field of bamboo wood mould proofing and corrosion proofing, in particular to an outdoor bamboo wood natural mould-proof corrosion-proof agent and preparation andtreatment methods thereof. The bamboo wood natural mould-proof corrosion-proof agent is prepared from the following components in percentage by weight: 30-40% of industrial wastewater after stevia rebaudiana is processed to prepare stevioside, 5-10% of soapberry fruit, 20-30% of melia azedarach leaf, 10-15% of folium coptis chinensis and 10-20% of folium isatidis. According to the preparation method of the bamboo wood natural mould-proof corrosion-proof agent, conventional decoction or alcohol extraction is adopted; the method for treating bamboo wood by means of the bamboo wood natural mould-proof corrosion-proof agent comprises the steps that after the bamboo wood is placed in hot water for soaking treatment or placed in an ethyl alcohol solution for soaking treatment, the bamboo wood natural mould-proof corrosion-proof agent is used for treatment. The outdoor bamboo wood natural mould-proof corrosion-proof agent and the preparation and treatment methods thereof have the beneficialeffects that firstly, the bamboo wood is placed in the alcohol solution for soaking to make large amounts of starch, sugar, protein and other salt substances in bamboo wood tissues are extracted through alcohol; therefore, the condition that the natural organic mould-proof corrosion-proof agent penetrates through parenchyma cells and vascular bundles of the internal tissues of the bamboo wood is more easy; the mould-proof corrosion-proof agent is prepared from the natural organic extracts and do not have any toxicity or cause pollution problems to the environment.
Owner:涂世红

Method for preparing elastic wood based on ultraviolet light initiated graft polymerization

ActiveCN111978490APrevent crushingGuaranteed natural mechanical propertiesOpen tank impregnationFiberPolymer science
The invention discloses a method for preparing elastic wood based on ultraviolet light initiated graft polymerization. The method comprises the following steps: by using balsa wood as a raw material,carrying out mild delignification treatment by using an acidic sodium chlorite solution to obtain a complete wood fiber skeleton; treating the obtained product with a sodium hydroxide alkaline solution; preparing a mixed solution of an acrylamide monomer and a cross-linking agent, and regulating the mixing ratio of the acrylamide monomer and the cross-linking agent; fully mixing the obtained product with an acrylamide monomer through an impregnation method; and putting the obtained product into a mold, and initiating a grafting cross-linking reaction through ultraviolet light with the wavelength of 320-380 nm to obtain polyacrylamide/wood fiber skeleton composite gel, namely the elastic wood. According to the method, the elastic wood can be prepared under the condition that a chemical initiator is not used, and due to the fact that the elastic wood has high biocompatibility, excellent mechanical performance and excellent light transmission performance, the elastic wood has potential application value in the fields of artificial skin, biosensors, soft tissue engineering materials, wearable flexible electronic base materials, stimulus response soft robots and the like.
Owner:NANJING FORESTRY UNIV

Weather-resistant artificial bamboo and wooden board and manufacturing method thereof

The invention discloses a weather-resistant artificial bamboo and wooden board and a manufacturing method thereof. The method comprises the following steps of mixing and dissolving 0.5 to 1.5 percent of a ultraviolet absorber and 0.8 to 2.0 percent of a free radical capturer by a small amount of distilled water, adding low-molecular-weight phenolic resin according to a ratio, and stirring and uniformly mixing the phenolic resin with a mixture of the ultraviolet absorber and the free radical capturer to obtain a solvent A; placing an artificial board surface layer material into the solvent A, completely soaking for 2h to 6h under the normal temperature and the normal pressure, and drying the soaked artificial board surface layer material under the normal temperature until the moisture content is 7 to 11 percent; assembling the artificial board surface layer obtained in step 2 and an artificial board base layer blank, thermally rolling, disassembling, and trimming to obtain a finished product. By soaking the outdoor artificial board surface layer, the light stabilizer and the antioxidant are permeated into cell cavities, even the cell walls, along the glue-water and then are assembled and thermally pressed with a core layer, so that the surface ultraviolet aging process can be slowed down in the application process, and the surface of the artificial board can be protected.
Owner:浙江省林产品质量检测站

Technique for manufacturing middle/high-density pressed-fibre board for direct printing

The invention relates to a production technology of a medium and high density fibre panel, wherein, the medium and high density fibre panel can be used for direct printing, and the surface thereof is glabrous. The production technology has the working procedures of wood chip screening and washing, stewing, hot grinding, glue blending and spreading, drying, paving and molding, heat pressing, and cooling. The steam pressure when in stewing ranges from 0.70 to 0.80MPa, and the time is 2 to 5 minutes; molten refined wax, the quality of which is 0.9 to 1.1 percent of absolute dry fiber, is added when in hot grinding defibrination; the pressure in a grinding chamber is lower than the pressure in a stewing cylinder, wherein, the pressure of the stewing cylinder is 0.01 to 0.04MPa; in the work procedure of glue blending and spreading, urea-formaldehyde resin modified by polyvinyl alcohol and firming agent are added into the fibre; after the fibre is dried, the water ratio thereof ranges from 8 percent to 12 percent; before entering into a hot-press, parting medium which is 1ml to 2ml is sprayed onto the upper surface and the lower surface of a plate blank. The production technology has the advantages that by utilizing the technology to produce the fibre panel, the surface texture and the hydrolytic resistance of a plank stuff are improved, the surface processability of the fibre panel is increased, the printing effect of the fibre panel when in direct printing is increased, and the production cost of printing process is lowered.
Owner:DONGYING ZHENGHE WOOD IND

Wicker processing method for wickerwork manufacturing

The invention discloses a wicker processing method for wickerwork manufacturing. The wicker processing method comprises the following steps that (1) wickers which are uniform in thickness, no diseases and insect pests, non-bifurcate and good in smoothness are harvested, the wickers are paved horizontally and sun-cured, and until the leaf water content is less than 3%, leaves are removed; (2) the wickers without the leaves are washed cleanly by using clear water and then placed in a pretreatment liquid of 50 degrees celsius to be soaked for 20 minutes, willowpelts are stripped after the soaked wickers are taken out, and the wickers are washed cleanly; (3) the wickers after being processed in the step (2) are dried by using hot wind until the wicker water content is less than 30%; (4) the wickers are soaked for four hours by using a softening fluid again, then washed cleanly and dried by using the hot wind until the wicker water content is less than 20%; and (5) the wickers are fumigated for half hour by using steam, the temperature is naturally lowered to normal temperature after the wickers are taken out, and the wickers can be directly used for wickerwork. The wicker processing method is simple, the wickers can be softened before weaving, the weaving difficulty is reduced, wicker fracture is prevented in the weaving process, the quality of products is high, and the processed wickers have mould-proof and insect-proof functions.
Owner:阜南县铭钰柳木工艺品有限公司

Preparation method of light aging-resistant outdoor recombinant bamboo wood board

The invention relates to a preparation method of a light aging-resistant outdoor recombinant bamboo wood board and belongs to the technical field of bamboo products. By fumigating bamboo bundles, lignin is cracked and crosslinked to form a more stable structure and generate many phenol components and antioxidant components, absorption of ultraviolet light is reduced obviously, and the light aging-resistance of the material is improved. Meanwhile, pores generated by cracking and crosslinking lignin cure and lock camphor oil in the bamboo bundles to achieve the purpose of continuously releasingthe camphor oil; the camphor oil and the generated many phenol components and antioxidant components form a barrier to coat the bamboo bundles to hinder permeation of water, so that the water resistance and the durability of the bamboo bundles are improved. By veneering the surfaces of the recombinant bamboos with fiber cloth layers, an ultraviolet shielding system suitable for the recombinant bamboos is constructed, and is high in ultraviolet shielding property and high in visible light transmittance. The light aging-resistant outdoor recombinant bamboo wood board also has a good protective effect to the shielding system while protecting a base material, and the color and luster of the recombinant bamboos can be protected effectively.
Owner:汪逸凡
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