265results about "Polymerisation impregnation" patented technology

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 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 technical field of flame retardance and antibiosis, and particularly relates to a flame-retardant and antibiosis composition for bamboos, flame-retardant and antibiosis bamboos, a preparation method and application, the flame-retardant and antibiosis composition for bamboos comprises the following components by weight: 5-8% of ammonium phosphate, 5-8% of nucleoside phosphate, 3-5% of phytic acid or phytate, 3-6% of urea, 1-3% of amino acid, and 8-12% of a hydroxyl-containing material; and the balance of water. The hydroxyl-containing material is one or more of soluble nano cellulose, a Tris reagent, sorbitol and erythritol; on the basis of keeping the original color of the bamboo, the flame-retardant and antibacterial effects of the bamboo are improved.

A method of treating a cellulose-based material, for example wood and engineered wood is provided, wherein the process involves the following steps: selecting and placing the cellulose-based material in a treatment chamber; impregnating the cellulose-based material with an impregnating agent consisting of an aqueous solution comprising a fluid suitable for esterification; facilitating a hydrolysis process whereby the impregnating agent reacts resulting in the formation of esters and polyesters inside the cellulosed-based material.

The invention discloses a mildew-proof green-keeping agent for bamboo wood, a preparation method and application. The preparation method of the bamboo wood mildew-proof green-keeping agent comprises the following steps: S1, adding chitosan into an acetic acid aqueous solution, and stirring until the chitosan is dissolved to obtain a mixed solution A; s2, adding copper salt into deionized water, and stirring until the copper salt is dissolved to obtain a mixed solution B; s3, adding cinnamyl aldehyde into an ethanol water solution, and stirring until cinnamyl aldehyde is dissolved to obtain a mixed solution C; and S4, the mixed solution A, the mixed solution B and the mixed solution C are mixed at the same time, stirring is conducted again under the water bath condition till the cinnamyl aldehyde chitosan copper is obtained through a reaction, and the cinnamyl aldehyde chitosan copper serves as the mildew-proof and green-keeping agent for the bamboo wood. Bamboo obtained through the treatment method is better in green-keeping and mildew-proof effects, bamboo green of the bamboo treated through the mildew-proof green-keeping agent is dark green, the bamboo can be kept green indoors and outdoors for a long time, the efficient mildew-proof performance is achieved, the treatment method is simple, and the mildew-proof green-keeping agent is non-toxic and harmless.

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 discloses a highly wear-resistant wood reconstituted material and a preparation method thereof, and belongs to the technical field of wood processing. The highly wear-resistant wood reconstituted material is prepared by simultaneously impregnating a wood reconstituted unit with a low-viscosity urea-formaldehyde resin and a high-viscosity melamine modified resin; wherein the mass ratio of the low-viscosity urea-formaldehyde resin to the high-viscosity melamine modified resin is (3-7): (7-3). The invention prepares the wood reconstituted material with a light-colored urea-formaldehyde resin and a melamine modified resin, and can prepare wood reconstituted materials of various colors or colors according to demand, which greatly broadens the application range of the wood reconstituted material.

A composite body (1) according to the present invention is composed of an integrated product in which an aluminum-containing base part (2) and a design layer (6) are joined via an intermediate layer (4). The intermediate layer (4) is composed of a wood block aggregate impregnated with resin or a wood plate impregnated with resin, and the surface of the base part on the intermediate-layer side is provided with a plurality of overhang parts. The resin is preferably contained in the cell wall of the wood block or the wood plate.

The invention discloses a loss-resistant bamboo mould-proof modification method, which comprises the following steps of: emulsifying glycidyl methacrylate by using polybasic acid, then adding a polymerization initiator to obtain a modification solution, dipping bamboo by using the modification solution, drying, carrying out heat treatment on the bamboo, and carrying out heating treatment on the bamboo to obtain a loss-resistant bamboo. The bamboo wood prepared through the method is good in loss resistance, the solute concentration of a modification reagent reaches 8 wt% or above, the bamboo wood can still achieve the complete mildew-proof effect after being soaked in water for 5 days, the mildew problem in the bamboo wood storage, transportation and use processes can be effectively solved, the color and texture of the bamboo wood are reserved, meanwhile, peculiar smell is avoided, and the bamboo wood is environmentally friendly. And the defect of economic loss caused by quality reduction due to mildew of the bamboo wood is overcome, and wide application prospects are achieved.

The invention belongs to the technical field of deodorants, and relates to a poplar fiber board deodorant, which is prepared from the following ingredients in parts by mass: 22 to 28 parts of multi-ion water, 22 to 28 parts of amino formaldehyde catching agents, 4 to 6 parts of nanometer TiO2, 8 to 12 parts of beta-cyclodextrin, 12 to 18 parts of porous adsorbents, 4 to 6 parts of surfactants and 12 to 18 parts of plant essential oil emulsion. The invention further discloses a preparation method and application of the poplar fiber board deodorant. The deodorant disclosed by the invention has a multi-mechanism synergistic deodorization effect of chemical decomposition, physical adsorption and biological bacteriostasis, can effectively remove peculiar smell of wood and peculiar smell problems caused by an adhesive, a waterproof agent and the like added in a plate processing process, reduces smell release of a poplar fiber plate, and improves indoor air quality.

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.

The invention discloses a flame retardant, a high-strength oriented structural plate and a preparation method and application thereof, and belongs to the technical field of flame-retardant materials. The flame retardant is prepared from the following components in parts by weight: 1 to 5 parts of ammonium polyphosphate, 1 to 5 parts of boron flame retardant, 1 to 5 parts of melamine cyanurate and 0.5 to 1.5 parts of nano aluminum oxide. When the ammonium polyphosphate, the boron-based flame retardant, the melamine cyanurate and the nano aluminum oxide are compounded to serve as the shaving board flame retardant, the synergistic interaction effect is achieved in the aspects of improving flame retardance and mechanical properties. The oriented structural board prepared from the flame retardant has excellent physical and mechanical properties, the elastic modulus reaches 9802 MPa, the static bending intensity reaches 89.45 MPa, the internal bonding strength reaches 0.78 MPa, the 24-hour water absorption thickness swelling rate is smaller than or equal to 11.0% and far exceeds the requirement of a 2-type OSB board recorded in GB / T41715-2022, the smoke release amount is small, and the combustion level reaches B1 (C).

To provide natural wood material with improved strength and toughness.SOLUTION: Wood material is treated in a chemical process to partially remove lignin from cellulose-based natural wood material, in which cellulose nanofibers of cell walls are aligned. Then, the treated wood material is pressed in a direction intersecting a direction in which lumens extend, such that the lumens are destroyed and residual fluid in the wood material is removed.SELECTED DRAWING: Figure 4

A method for forming an engineered veneer block includes stacking a plurality of laminate layers. The method also includes spreading a bonding agent between each layer of the plurality of laminate layers. The bonding agent includes an adhesive. The adhesive consists essentially of one or more no added formaldehyde adhesives. The method also includes slicing an engineered veneer from the engineered veneer block. The engineered veneer has a thickness in the range of 0.1 millimeters to 0.5 millimeters.

The invention discloses a production method for improving the stability of a wooden guitar, and belongs to the technical field of musical instrument manufacturing. The method comprises the following specific steps that wood is sawn into boards, the surfaces of the boards are cleaned, then the boards are placed in deionized water to be subjected to ultrasonic treatment, after treatment is completed, low-temperature drying is conducted, and the boards subjected to ultrasonic treatment are obtained; then putting the wood into a glyoxal solution, carrying out vacuum pressurization dipping treatment, taking out and drying the wood after dipping, and adjusting the moisture content of the wood to be balanced to obtain a glyoxal dipped board; the preparation method comprises the following steps: preparing a glyoxal-polyethylene glycol impregnated plate, soaking the glyoxal-polyethylene glycol impregnated plate in a polyethylene glycol impregnation liquid, carrying out vacuum impregnation treatment, after impregnation is completed, drying, adjusting the moisture content to be balanced to obtain the glyoxal-polyethylene glycol impregnated plate, and cutting and assembling the glyoxal-polyethylene glycol impregnated plate to prepare the wooden guitar. The wooden guitar produced through the method is high in size stability, large deformation caused by changes of external temperature and humidity is avoided, the mildew and corrosion resistance of the wooden guitar is enhanced after dipping treatment, and the service life of the wooden guitar is greatly prolonged.

The application discloses an ant-termite drug barrier system for wood composites and a construction method and application thereof, and relates to the technical field of wood composite ant-termite prevention. The ant-termite drug barrier system comprises a drug active ingredient, a nanoscale modified silicon dioxide carrier, a penetration enhancer, an adhesion enhancer and a stabilizer, and the drug barrier can be efficiently constructed on the surface of the wood composite by a vacuum-assisted impregnation method, and the thickness is controllable and the operation is convenient. The nanoscale modified silicon dioxide carrier is combined with a complex system of sodium fatty alcohol polyoxyethylene ether sulfate and alkyl polyglycoside, so that the permeability and adhesion can be significantly improved. The system is suitable for indoor and outdoor environments, can be coated with a waterproof coating to prolong the service life, and can be conveniently repaired when locally damaged; the drug active ingredient is non-toxic or low-toxic, so that an efficient, durable and environmentally-friendly ant-termite solution for wood composites is provided.

The invention discloses a flame retardant for shaving boards as well as a preparation method and application of the flame retardant, and belongs to the technical field of flame-retardant materials. The flame retardant for the shaving board is prepared from the following components in parts by weight: 1 to 5 parts of boron flame retardant, 1 to 5 parts of melamine cyanurate and 0.5 to 1.5 parts of nano aluminum oxide. The boron-based flame retardant, the melamine cyanurate and the nano aluminum oxide are synergistically matched, and synergic complementation of a flame-retardant mechanism is realized by controlling the use amounts of the three components of the boron-based flame retardant, the melamine cyanurate and the nano aluminum oxide. The MCA is used for diluting combustible gas by decomposing and releasing non-combustible gas, and the boron flame retardant and the nano aluminum oxide form a glassy or compact oxide layer on the surface of the material, so that heat and oxygen transfer is blocked. And the boron compound inhibits smog generation, the nanometer aluminum oxide enhances the strength of the carbon layer, molten drops are reduced, and the safety is improved. The synergistic effect of the three can reduce the consumption of the flame retardants, reduce the cost, reduce the negative influence on the mechanical properties of the shaving board, and even counteract the weakening of the flame retardants on the mechanical properties of the shaving board.

The invention relates to the technical field of processing of artificial boards, in particular to a preparation method of a high-light-resistance color-changing type cork-based board, which comprises the following preparation steps: S1, preparing a modifier; s2, preparing a modified adhesive; and S3, preparing the plate. By adding the photochromic modifier into the adhesive for the softwood-based board, the photochromic property of the softwood-based board can be greatly improved, and the operation is simple. And the added modifier does not change the color of the cork-based board and has no influence on subsequent processing such as dyeing and coating.

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.

The invention discloses a litsea cubeba essential oil preparation. The preparation is prepared by uniformly mixing a chitosan quaternary ammonium salt solution with the mass percent concentration of 1% and a litsea cubeba essential oil ethanol mixed solution according to the volume ratio of 1: 4, the volume ratio of the litsea cubeba essential oil to the absolute ethyl alcohol in the litsea cubeba essential oil and ethyl alcohol mixed solution is 2: 3. The prepared litsea cubeba essential oil preparation is good in dispersity and stability, the short-term and long-term bacteriostatic effects on aspergillus flavus both reach 100%, and the litsea cubeba essential oil preparation is obviously better than litsea cubeba essential oil or chitosan quaternary ammonium salt independently used, is also better than chitosan quaternary ammonium salt-litsea cubeba essential oil preparations of other formulas, is better than common mildew preventives in the market, and is suitable for industrial production. The preparation method is simple, non-toxic and harmless, does not pollute the environment, is low in production cost, is used for preventing or inhibiting the growth of the aspergillus flavus, and can reduce the damage of the aspergillus flavus to grains, nuts or wooden living goods and the like.

The present invention provides a method for producing a modified wood material. Specifically, the method comprises the following steps: 1) infiltrating a furan derivative resin solution into the wood material, the furan derivative resin solution containing a furan derivative, an inorganic salt that inhibits polymerization of the furan derivative at room temperature, and an inorganic salt that promotes polymerization of the furan derivative; and 2) heating the infiltrated furan derivative resin solution to polymerize the furan derivative in the wood material.

A method of producing a wood-based material that is modified is provided. Specifically, there is provided a method of producing a wood-based material, comprising 1) a step of impregnating a wood-based material with a furan derivative resinification solution that comprises a furan derivative, an inorganic salt inhibiting polymerization of the furan derivative at normal temperature, and an inorganic salt accelerating polymerization of the furan derivative; and 2) a step of polymerizing the furan derivative in the furan derivative resinification solution impregnated into the wood-based material within the wood-based material by means of heating.

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.

A filler material is applied to a plurality of wood elements which are joined to form a composite wood product, said joining comprising applying ultrasonic energy to the plurality of wood elements, said ultrasonic energy having a frequency within a frequency range of 10 kHz to 20 MHz.

The application discloses a high-efficiency dehydration protection method for water-saturated wooden cultural relics, and specifically comprises the following steps: step 1, preparing a xylitol aqueous solution with a concentration of 30-80 wt%; step 2, soaking the water-saturated wooden cultural relics in the xylitol aqueous solution prepared in step 1 until the xylitol permeates into the water-saturated wooden cultural relics; step 3, taking out the water-saturated wooden cultural relics and removing the excess xylitol on the surface of the water-saturated wooden cultural relics; step 4, spraying a chitosan aqueous solution with a concentration of 1-5 wt% on the surface of the water-saturated wooden cultural relics treated in step 3 for multiple times; and step 5, spraying a glutaraldehyde aqueous solution with a concentration of 2-10 wt% on the surface of the water-saturated wooden cultural relics treated in step 4 for multiple times, then wrapping the water-saturated wooden cultural relics with a breathable film, and airing the water-saturated wooden cultural relics until the constant weight of the water-saturated wooden cultural relics is reached, thereby completing the dehydration and shaping of the water-saturated wooden cultural relics.

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.

A method for producing a multilaminar wood sheet with patterns comprises the steps of: depositing a printing mixture on one or more base wood sheets to be printed; controlling penetration and diffusion of the printing mixture on said one or more base wood sheets to be printed by applying a set pressure value to the printing mixture, thus obtaining one or more printed wood sheets; forming a block of sheets comprising a plurality of printed wood sheets; cutting the block of sheets to obtain the multilaminar wood sheet.

The application discloses a preparation method of formaldehyde-free low-carbon wood composite material, which comprises the following steps: preparing an impregnation solution, removing lignin on wood by using an alkaline solution to obtain a wood matrix; pretreating the obtained wood matrix by using a gas phase treatment process to control and adjust the pores on the wood matrix; cyclically freezing and impregnating the wood matrix by using the impregnation solution; heating the wood matrix after the S3 treatment; and ultraviolet curing, so that the voids on the wood after the lignin is removed are more uniform, the impregnation of the impregnation solution in the later impregnation process is easier, the situation that all areas cannot be filled is avoided, the uniformity of the pores is greatly improved, the impregnation degree and impregnation efficiency in the later impregnation process are improved, and the physical performance and stability of the wood are improved.