160results about "Pretreatment apparatus" patented technology

Highly transparent (up to 92% light transmittance) wood composites have been developed. The process of fabricating the transparent wood composites includes lignin removal followed by index-matching polymer infiltration resulted in fabrication of the transparent wood composites with preserved naturally aligned nanoscale fibers. The thickness of the transparent wood composite can be tailored by controlling the thickness of the initial wood substrate. The optical transmittance can be tailored by selecting infiltrating polymers with different refractive indices. The transparent wood composites have a range of applications in biodegradable electronics, optoelectronics, as well as structural and energy efficient building materials. By coating the transparent wood composite layer on the surface of GaAs thin film solar cell, an 18% enhancement in the overall energy conversion efficiency has been attained.

Wood template-supported phase change material (PCM) composite having thermal energy storage applications. A wood template-supported PCM may include a wood template that has had at least a portion of its xylan and / or lignin removed and saturated with a PCM. The PCM may be stabilized with a cross linkable network for improved infiltration into the wood template. The wood template-supported PCM composite may be formed by extracting xylan and / or lignin from the wood to create a wood template, densifying at least a portion of the wood template, and inserting a PCM into the wood template.

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 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 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 relates to the technical field of wood, in particular to a multilayer structure insulation laminated wood manufacturing process which comprises the following steps: pretreatment: selecting birch fiber sheets with the thickness of 0.2-0.4 mm, and degreasing, cleaning and drying the birch fiber sheets; flame retardant treatment, wherein the surfaces of the pretreated birch fiber sheets are coated with a flame retardant solvent for 1-3 times through spraying equipment; and preparing impregnation liquid. According to the invention, epoxy resin is further crosslinked with residual hydroxyl of isocyanate resin through ring-opening reaction of epoxy groups to form a three-dimensional interpenetrating network structure, pores of wood fibers are effectively sealed, and an internal ion migration path is blocked, so that the insulativity is improved; meanwhile, the surface activity of the ceramic particles in the functional additive is enhanced after plasma treatment, stronger interface bonding is formed between the ceramic particles and the resin matrix, microcracks and holes at the interface are reduced, the breakdown risk caused by local electric field concentration is avoided, and the insulation effect is enhanced.

In order to overcome the flammable disadvantage of wood materials, improve the safe use performance of the wood materials and reduce the use of petrochemical-based flame retardants, a solid wood board can be subjected to dipping flame-retardant treatment by preparing a bio-based flame retardant, forming a nitrogen-phosphorus metal series synergistic flame-retardant system and brushing a photocureable coating added with metal ions. The high-efficiency functional wood material with flame-retardant and early-warning functions is prepared.

The invention discloses an MXene modified bamboo-based composite phase change energy storage material, which is characterized in that a Xene modified bamboo parenchyma cell-based packaging framework is used as a packaging matrix, and a phase change material is packaged in the packaging matrix. The preparation method comprises the following steps: (1) preparing the multi-cell-cavity bamboo parenchyma cells; (2) preparing a delignification bamboo parenchyma cell framework; (3) preparing an MXene modified bamboo parenchyma cell-based packaging framework; and (4) preparing the MXene modified bamboo-based composite phase change energy storage material. Compared with the prior art, the composite phase-change material has the following outstanding effects: the polyethylene glycol encapsulation rate of the composite phase-change material is as high as 80%, and the composite phase-change material has good heat storage capacity; the MXene modified bamboo parenchyma cytoskeleton MDBP can improve the flame retardant property of the composite material and reduce the heat release rate, and meanwhile, the carbon residue is increased to 6.1-15.1 w% from 4.28%; the composite phase change material shows good light absorption and heat conversion performance, and the peak temperature reached under the same light source irradiation time is far beyond that of a bamboo-based composite phase change material without MXene modification; the composite phase change material has thermal stability, flame retardance and photothermal conversion performance.

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.

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 relates to the technical field of wood modification, in particular to a preparation method of organic silicon modified super-hydrophobic wood. The preparation method of the organic silicon modified super-hydrophobic wood comprises the following steps: preparing hydrophobic silicon dioxide sol, preparing organic silicon modified liquid, dipping the wood in the hydrophobic silicon dioxide sol for multiple times, spraying the organic silicon modified liquid on the surface of a wood matrix, and curing at normal temperature. According to the organosilicone modified super-hydrophobic wood, a multifunctional hydrophobic coating is constructed on the surface of the wood by adopting a dip coating process, and the organosilicone modified super-hydrophobic wood has the advantages of simple equipment and preparation process, low energy consumption, short reaction period, high curing efficiency, mostly non-toxic modifier and the like, and is suitable for being applied to preparation of large-area hydrophobic / super-hydrophobic wood.

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.

The invention relates to the field of coatings, and discloses a method for constructing a fluoride-free wear-resistant transparent super-hydrophobic coating, which comprises the following steps: (1) carrying out surface roughening treatment on wood; (2) wood is immersed in the oil-phase impregnation liquid at 75-85 DEG C, and wood with an uncured hydrophobic layer on the surface is obtained after the wood is taken out; the oil phase impregnation liquid comprises carnauba wax, tung oil and ethyl acetate; (3) the wood is immersed in hydrophobic nano-silica dispersion liquid with the temperature 50-60 DEG C lower than that of the oil-phase impregnation liquid, an uncured hydrophobic layer is cooled and cured into a cured hydrophobic layer with a micron-sized rough surface, and hydrophobic nano-silica is attached to the surface of the cured hydrophobic layer; and taking out, ventilating and drying, enabling the tung oil to permeate into the wood and generate crosslinking, and finally constructing and forming the fluoride-free wear-resistant transparent super-hydrophobic coating on the surface of the wood. According to the method, the super-hydrophobic coating with the micro-nano structure can be constructed on the surface of the wood, and the super-hydrophobic coating has high wear resistance and high transparency.

In some embodiments, the material comprises a continuous block of chemically modified wood infiltrated with an index matching polymer. The continuous block has a first portion that is substantially transparent to light and a second portion that is translucent or opaque. The first portion may have a lower lignin content than the second portion. Alternatively, the chromophore state of the first portion may be different from the chromophore state of the wood in its natural state, while the lignin in the second portion may maintain the chromophore state of the wood in its natural state. In some embodiments, the material includes a chemically modified wood fraction such that chromophores of lignin in the wood in its natural state are altered or removed, and the fraction retains at least 70% of the lignin of the wood in its natural state. Methods of forming such materials are also disclosed.

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.

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

An invention relates to thermal or thermomechanical processing of hygroscopic material to adjust the material properties. The invention concerns a modification arrangement for the hygroscopic material. The modification arrangement comprises a modification unit (202) and a fluid container (204) that is coupled with a control valve (205) to at least one fluid aperture (203). The modification arrangement is configured for heating the hygroscopic material in the modification unit (202) to extract water from it and, in response to opening of the control valve (205), leading fluid from the fluid container through said at least one fluid aperture (203) into the modification unit (202). The modification arrangement further comprises a treatment agent (207) added to the fluid so that the treatment agent (207) is absorbed into the hygroscopic material and modifies it. The treatment agent (207) includes at least one of the following ingredients: a preservative, a dye, a pigment, an aroma, an odour eliminator, a pesticide, an impregnation ingredient, or a fire retardant.

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.

The invention discloses a wood heat treatment method which is characterized in that wood is sequentially subjected to impregnation pretreatment, drying and steam heat treatment, impregnation is performed by a vacuum breathing method, an impregnation reagent is tannic acid and silica sol, and heat treatment is performed in saturated steam. According to the wood treated through the method, the wood color can be obviously changed on the basis that the texture features of the wood are reserved, and the dimensional stability and the mechanical property of the wood are improved; in addition, dipping pretreatment reagent components are free of pollution, and compared with a traditional wood carbonization method, the method is lower in heat treatment temperature, shorter in heat treatment time, low in equipment production energy consumption, short in product production period and beneficial to industrial production.

Provided is a board material processing composition enabling manufacture of a board material laminate which is noncombustible and superior in adhesive performance. In order to solve this problem, a board material processing composition that inhibits combustion of a board material due to heating contains: an inorganic carbonization promotion component that promotes carbonization of an organic component in the board material during the heating; an inorganic chain inhibition component that inhibits a reaction chain to adjacent components due to a product of endothermic decomposition generated during the heating; and inorganic hydrophobic binder particles that adhere the organic component in the board material with the carbonization promotion component and the chain inhibition component.

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 invention discloses an optimization treatment method for wood for musical instruments. The optimization treatment method comprises the steps of low-temperature forced circulation drying treatment, low-temperature vacuum drying treatment, content regulation and control treatment, accelerated aging treatment and humidity regulation and balance treatment. The accelerated aging treatment comprises high-temperature treatment and low-temperature moisture absorption treatment, the oxygen content of the treatment environment is controlled in the high-temperature treatment process, and the two types of treatment are cyclically alternated for 2-8 times. The method has the advantages of being efficient, environmentally friendly, low in cost, free of additives, capable of keeping the original characteristics of wood and the like, the optimization treatment period of the wood is shortened, and the acoustic performance and the dimensional stability of the wood are further improved while the natural characteristics of the wood are kept to the maximum extent.

The invention discloses a maleic anhydride / sodium silicate / furfuryl alcohol composite modified Chinese fir and a preparation method and application thereof.The preparation method comprises the following steps that the Chinese fir is placed in a dipping device, a sodium silicate solution is added to do not leave the Chinese fir, and positive pressure is applied to conduct primary dipping treatment; adding a furfuryl alcohol-maleic anhydride compound solution to remove the cedarwood, applying positive pressure to carry out secondary dipping treatment, curing, aging and drying to obtain the maleic anhydride / sodium silicate / furfuryl alcohol compound modified cedarwood. The prepared maleic anhydride / sodium silicate / furfuryl alcohol composite modified Chinese fir has excellent mechanical properties, dimensional stability and loss resistance, can be widely applied to the high-added-value fields of buildings, solid wood furniture and the like, and has remarkable economic benefits and social benefits and good application prospects.

The invention relates to a process for acetylation of wood having a density of above 400 kg / m3, particularly, of Southern Yellow Pine, and acetylated wood obtainable by this method. The described acetylation process allows the production of acetylated wood having higher acetylation levels, such as an acetyl content of at least 20% by weight. The acetylated wood has also a low residual acetic acid content, in particular, lower than 1% by weight. The invention is particularly useful for acetylation on industrial scale of pieces of solid wood, preferably, of wood beams.

The invention discloses an anti-aging highlight veneer shaving board and a preparation method thereof, and belongs to the technical field of wood board production. The manufacturing method comprises the steps of eucalyptus wood shaving preparation, primary drying, potassium acetate treatment, secondary drying, acetic anhydride treatment, tertiary drying, gluing, assembly, pre-pressing and hot pressing, and the acetylated eucalyptus wood shaving board is manufactured. And then sanding, melamine paper pasting, hot pressing, colored paint roller painting, varnish and UV paint curing are conducted, and the anti-aging highlight veneer shaving board is obtained. The product has lasting highlight on the surface, solves the problem of reflection imaging sawtooth waves of a common shaving board, and is suitable for high-end furniture and indoor decoration.

The invention discloses super-tough flame-retardant plastic mineralized composite wood as well as a preparation method and application thereof. Natural wood is delignified, then is soaked in water for plasticizing, then is oxidized by using an oxidizing agent, cellulose hydroxyl is converted into carboxyl so as to provide mineralization nucleation sites, and in-situ mineralization of calcium carbonate in the wood is further realized in calcium salt and soluble carbonate; and finally, the density is greatly improved through water soaking and hot pressing treatment, and the mineralized composite wood is obtained. The mineralized composite wood has ultrahigh strength, high toughness, excellent flame retardance and plasticity, and the performance of the mineralized composite wood is obviously superior to that of natural wood and traditional structural materials. The preparation method provided by the invention is green and low in cost, and the obtained product is suitable for the fields of light high-strength structural materials and multifunctional composite materials, and has wide application prospects in the fields of buildings, energy sources and the like.

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