52results about "Pretreatment apparatus" patented technology

The invention belongs to the technical field of renewable resource utilization and new energy, and relates to a wood-based water photovoltaic power generation material and a preparation method and application thereof.The wood-based water photovoltaic power generation material is prepared by taking natural wood as a raw material, performing chemical modification treatment and combining directional freeze drying and salting-out treatment. The wood-based water photovoltaic power generation material with relatively good mechanical strength is prepared by using the wood-based material as a raw material, the wood-based material has a highly-oriented porous structure, and under the conditions of 25 DEG C, standard atmospheric pressure and relative air humidity RH 30%, a 200-mesh copper mesh is used as an electrode, and the open-circuit voltage of a nano power generation device obtained by assembling in deionized water reaches 110 mV, and the short-circuit circuit reaches 0.74 mA. The material is simple in preparation process and wide in application scene, adopts natural high polymer materials as raw materials, has the environment-friendly advantages of reproducibility and biodegradability, and has a wide application prospect in the field of new energy materials.

In some embodiments, a material comprises a contiguous block of chemically-modified wood infiltrated with an index-matching polymer. The contiguous block has a first section that is substantially transparent to light and a second section that is translucent or opaque. The first section can have a lower lignin content than the second section. Alternatively, the first section can have a chromophore state altered from that of the wood in its natural state, and the lignin in the second section can retain a chromophore state of the wood in its natural state. In some embodiments, a material comprises a section of wood chemically-modified such that chromophores of lignin within the wood in its natural state are altered or removed, and the section retains at least 70% of the lignin of the wood in its natural state. Methods for forming such materials are also disclosed.

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 relates to the field of wood modification, in particular to modified wood and a modification method thereof. The method comprises the following steps: (1) drying wood to be modified to constant weight to obtain dried wood; (2) the dried wood is placed in steeping liquor to be treated, and steeped wood is obtained; the steeping liquor comprises any one of steeping liquor I and steeping liquor II; the impregnation liquid I comprises silicate and organic acid I; the impregnation liquid II comprises organic acid II, mixed fatty acid methyl ester and wax. On the premise of ensuring simple operation steps, the porosity of the wood can be reduced, and the dimensional stability, high humidity resistance and salt resistance of the wood can be improved.

The equipment comprises a soaking pool and a conveying frame, the conveying frame is arranged on the right side of the soaking pool, grooves are formed in the front side and the rear side of the interior of the soaking pool, and lifting structures are fixedly connected to the positions, corresponding to the grooves, of the front side and the rear side of the soaking pool; a clamping structure matched with the lifting structure is arranged at the position, located in the soaking pool, of the lifting structure, and a cleaning structure is fixedly connected to the left side of the top of the conveying frame. Through cooperative use of the soaking pool, the conveying frame, the groove, the lifting structure, the clamping structure, the cleaning structure, a driving mechanism, a vertical hole, a folding baffle, a transverse block, a supporting block and a stirrer, the problems that when a floor is soaked, glue and the surface of the floor are not tightly attached due to impurities attached to the surface of the floor, and local glue shortage or bubbles occur are solved; and after impurities are mixed into glue, the uniformity of the glue is influenced, so that the performance of the impregnated floor is inconsistent.

A part made from lignocellulosic material (10) is formed from a single sheet (11) of partially delignified lignocellulosic material impregnated with an impregnation polymer. The part (10) comprises at least one curved portion having a double curvature surface. The part made from lignocellulosic material is produced by a production method implementing a thermoforming step. Use in particular for producing wood veneer structures.

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 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 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 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 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.

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

The invention provides a method of producing a piece of delignified wood having a porous structure, said method comprising: chemically treating a piece of natural wood to remove at least 90% of lignin from the natural wood while substantially retaining cellulose-based lumina of the natural wood, thereby producing a piece of delignified wood; after the removing, drying the piece of delignified wood by freeze drying or critical point drying, such that the cellulose-based lumina remain open or unobstructed in a cross-sectional view; and after the drying, further chemically treating the piece of delignified wood to be hydrophobic or resistant to weather or salt water, or forming or depositing a coating on exterior surfaces of the delignified wood. The unique microstructure and composition of the delignified wood can provide advantageous thermal insulation properties, among other advantages described herein.

The present application relates to a kind of melamine urea-formaldehyde resin composite boron salt one-time impregnation solid wood preservative liquid, impregnated wood and the irradiation strengthening process of impregnated wood, first, select boron, calcium (or copper) compound aqueous solution as impregnation liquid, or can contain boron, calcium ion (or copper ion) and melamine urea-formaldehyde resin simultaneously according to specific process preparation mixed solid wood impregnation liquid;Then wood is treated by vacuum pressurized impregnation, impregnated wood can be irradiated according to the need of specific dose with electron beam or other radiation source in humid state;Finally, impregnated wood is dried and treated to obtain finished product;According to the need of selection calcium-boron formula, then colorless preservative liquid of one-time impregnation can be achieved, copper-boron formula then achieves the one-time impregnation preservative liquid of better preservative effect but color.

The invention belongs to the technical field of floor materials, and particularly relates to a nano-porous crystal net heating material and a preparation method thereof. The composite material is composed of a base material, inorganic nano porous skeleton sol, a nano heating crystal-conductive phase, a bio-based resin binder phase, an interface coupling agent and a curing system. According to the invention, a wood-inorganic nano framework-organic resin interpenetrating and embedded three-dimensional nano porous crystal net is constructed through integrated component design and vacuum pressure impregnation and gradient curing processes; the Fe-Mn-Ti composite oxide and the nitrogen-doped porous carbon dots cooperate with each other, so that uniform surface heating is realized, and local hot spots are avoided; the bio-based binder phase and the coupling agent solve the problems of embrittlement and interface delamination of the inorganic phase, and the structural stability is improved; an anhydride curing system is environment-friendly and free of volatile matters, and has both safety and insulativity; the process ensures that the material is evenly distributed in the thickness direction, endogenous heating and heat preservation functions are achieved, temperature uniformity is remarkably improved, the service life is remarkably prolonged, and environmental adaptability is remarkably improved.

The present application relates to the technical field of wood heat treatment modification, and discloses a combined heat treatment method and device for wood, which sequentially comprises the following procedures: a pretreatment procedure, wherein wood is soaked in an aluminum sulfate solution until the weight gain reaches 10-35%, and pretreated wood is obtained; a heat treatment procedure, wherein the pretreated wood is placed in a temperature condition of 120-160 DEG C for heat treatment for 1-3h, and heat treated wood is obtained; and a post-treatment procedure, wherein the heat treated wood is soaked in a siloxane modified solution for a period of time, dried, and the siloxane modified solution is a mixed solution comprising methyl triethoxysilane and tetraethyl silicate. The method can ensure that the wood treated by the aluminum sulfate catalysis-heat treatment combination has good dimensional stability and thermal stability, and still has relatively high mechanical strength.

The application discloses a preparation method of long-acting electromagnetic shielding solid wood board and belongs to the technical field of wood functional treatment. The preparation method comprises the following steps: first, vacuum pressure impregnation treatment of the solid wood board is carried out by using a phenyl trimethoxysilane solution; then, impregnation treatment of the solid wood board is carried out by using an aniline solution and an ammonium persulfate solution respectively; then, electrochemical treatment of the solid wood board is carried out by using the aniline solution; and finally, spraying treatment of the solid wood board is carried out by using a water-based polyurethane coating. The electromagnetic shielding solid wood board prepared by the application has high electromagnetic shielding efficiency and excellent electromagnetic shielding efficiency stability, can effectively prevent the systems such as precision instruments, scientific measurement and medical care from being interfered by external electromagnetic waves, and has high economic value and social benefits.

A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.

Methods and systems for self-flowing treatment of wood, bamboo or other porous materials do not require external pressure or complicated equipment. Treatment liquid flows through these porous materials through use of capillary action, the use of absorbent sheets, and differences in pressure. The treatment solution is more evenly dispersed throughout the materials.

A flame retardant cellulose-based product formed from ingredients comprising : (i) a cellulose-based material selected from paper-based material, wood-based material and bamboo-based material; (ii) a brominated phosphate ester of Formula (la), wherein the brominated phosphate ester of Formula (la) is present in an amount of about 5% to about 20 % by weight of the cellulose- based product; and (iii) a melamine resin selected from partially methylated melamine formaldehyde resin, methylated melamine formaldehyde resin, and methylated high imino melamine resin, having a molecular weight above 150 gr / mole, above 180, above 300, above 400, above 500, above 600, above 700 gr / mole, preferably having a molecular weight of about or above 500 gr / mole, wherein the melamine resin is present in an amount of about 10% to about 20% by weight of the cellulose-based product.

The invention discloses coordination polymer glass multifunctional flame-retardant wood and a preparation method thereof, and belongs to the technical field of wood flame retardance. According to the method, the wood is soaked in the zinc phosphate solution and the imidazole solution, ZnP-H2Im is prepared in situ, and ZnP-H2Im crystals have the remarkable low-melting-point characteristic at the temperature of 154 DEG C and are highly matched with the conventional temperature range (150-180 DEG C) of wood heat treatment; the prepared modified wood is heated, ZnP-H2Im crystals can be subjected to glass transition, ZnP-H2Im glass films are generated on the surfaces of wood cell walls, cell cavities and fibers, the flame retardant property of the wood is remarkably improved through multiple flame retardant mechanisms, the prepared flame retardant wood can provide protection in the whole stage that the wood makes contact with flames, and the flame retardant property of the wood is improved. Meanwhile, the problems of non-uniform distribution, easy loss and the like of the flame retardant are solved.

A transformation of an existing, conventional southern yellow pine (SYP) lumber pressure treatment plant that previously impregnated wood with non-sustainable chemicals, to using environmentally friendly sodium silicate formulations. The transformation may include adding heated storage tanks for solutions of siliceous solutions and adding a heater to an existing storage tank, installing delivery lines capable of handling high pH, viscous solutions between at least the pre-existing vacuum pressure impregnation tank and the added or existing heated storage tank, a CO2 storage tank with associated vaporizer and a CO2 recovery system, associated lines to and from the pre-existing vacuum pressure impregnation tank and the CO2 storage tank and the CO2 recovery system, pumps for circulating the solutions, and a thermal management system including: insulation and cladding on one or more of the tanks and lines, heat tracing on all level indicators; and insertion of heating coils in working tanks.

Disclosed is a method of manufacturing a fire resistant wood product. The method comprises, heating wood to a temperature of about 180°C to about 260°C to produce thermally modified wood; impregnating the thermally modified wood with a thermosetting resin and a fire retardant to produce an impregnated thermally modified wood. The impregnating comprises applying a vacuum of about -90 to -95kPa to the thermally modified wood; followed by flooding the thermally modified wood with the thermosetting resin and the fire retardant while maintaining the vacuum of about -90 to about -95 kPa. The method then applies a pressure of about 900 to about 1400kPa, and dries the impregnated thermally modified wood, resulting in a fire-resistant wood product.

The present invention relates to a method for obtaining a lignocellulosic composite material, a lignocellulosic composite material capable of being obtained by this method, and the use of this lignocellulosic composite material.

The invention provides an innovative method for constructing rich nanopores in wood cell walls within millisecond-level time by combining a flash evaporation Joule heating technology and a two-dimensional MXene controlled release mechanism without any chemical activating agent. The two-dimensional MXene nanosheet is used as a gas release regulation component and is uniformly loaded on the surface of a wood cell wall to form a controlled release layer with high bulk density (10-30mg cm <-2 >). Connecting the wood sample with a flash evaporation Joule heating device, and applying an instantaneous voltage of 100-300V to rapidly rise the temperature to about 700-1100 DEG C; under the action of high temperature, wood cell walls are rapidly pyrolyzed along with instantaneous generation of a large amount of gas, and the preformed MXene controlled release layer effectively limits dissipation of the gas, so that pyrolysis gas is rapidly accumulated in the wood and is efficiently activated, and a rich nano-pore structure is constructed in situ in the cell walls. The prepared activated wood has a developed pore structure and can be widely applied to the fields of supercapacitors, electrochemical adsorbents, catalyst carriers and the like.

In some embodiments, a material comprises a contiguous block of chemically-modified wood infiltrated with an index-matching polymer. The contiguous block has a first section that is substantially transparent to light and a second section that is translucent or opaque. The first section can have a lower lignin content than the second section. Alternatively, the first section can have a chromophore state altered from that of the wood in its natural state, and the lignin in the second section can retain a chromophore state of the wood in its natural state. In some embodiments, a material comprises a section of wood chemically-modified such that chromophores of lignin within the wood in its natural state are altered or removed, and the section retains at least 70% of the lignin of the wood in its natural state. Methods for forming such materials are also disclosed.

The application discloses a kind of hyperbranched topological hybrid silicon impregnation modification liquid and its impregnation modified wood method and impregnation modified wood, the hyperbranched topological hybrid silicon impregnation modification liquid includes the following components: component A and component B, wherein, component A includes silicon hybrid component, hyperbranched topological hybrid component and mixed solvent, the mass percentage concentration of silicon hybrid component in the A component is 10%~60%, the mass percentage concentration of hyperbranched topological hybrid component is 1%~15%;Component B includes initiation component and mixed solvent, the mass percentage concentration of initiation component in the B component is 0.1%~2%.The hyperbranched topological hybrid silicon impregnation modification liquid of the application can produce "silicon-amine" topological hybrid crosslinking chemical bond in wood inside, form organic-inorganic hyperbranched hybrid system with stable three-dimensional topological structure, play the role of synergistic enhancement wood.