18 results about "Balsa wood" patented technology

The invention discloses a preparation method and application of a composite catalyst based on mesoporous high-entropy alloy PtPdRhRuCu / cork wood derived carbon, and relates to a preparation method and application of a composite catalyst. The invention aims to solve the problem that during preparation of the Pt-based mesoporous high-entropy alloy, due to coexistence of various metal precursors, significant difference exists in reduction kinetics, so that nucleation and crystal growth processes are difficult to cooperatively control. According to the invention, five metal elements of Pt, Pd, Rh, Ru and Cu are ingeniously combined to form the high-entropy alloy, and the synergistic enhanced cocktail effect is generated by utilizing the unique functions (such as the high activity of Pt and Pd, the strong regulation ability of Rh and Ru on oxygen-containing species, and the Cost-down effect and electronic regulation of Cu) of each element; meanwhile, the composite material is compounded with mesoporous carbon, so that a stable conductive network and a reaction interface are constructed. The invention belongs to the technical field of electrocatalysts.

The application discloses a method for preparing a sodium-ion battery hard carbon negative material from recycled balsa wood and belongs to the technical field of sodium-ion batteries. The specific steps comprise the following steps: disassembling and crushing waste fan blades to obtain balsa wood powder; treating the balsa wood powder with an alkali solution to obtain a modified primary product; mixing the modified primary product with a soluble auxiliary carbon source and performing hydrothermal reaction to obtain a hydrothermal composite precursor; and performing high-temperature carbonization of the hydrothermal composite precursor in an inert atmosphere to obtain a sodium-ion battery hard carbon negative material. The core process of "alkali solution pre-modification + hydrothermal composite with a soluble auxiliary carbon source" effectively overcomes the problems of weak interface combination and pore disorder caused by the different pyrolysis shrinkage behaviors of the two precursors. The prepared hard carbon negative electrode inherits the mesoporous framework of balsa wood and the closed pore introduction filled with sucrose carbon, has low specific surface area, high initial coulombic efficiency, high specific capacity, high rate performance and excellent cycle stability, and realizes high-value utilization of waste wind turbine blades.

This invention discloses a porous activated carbon prepared using balsa wood material, its preparation method, and its application. The porous activated carbon has a pore diameter of 0.4 nm to 400 nm, and the pore volume ratio of micropores (0.4 nm to 2 nm), mesopores (2 nm to 50 nm), and macropores (50 nm to 400 nm) is greater than 30%. The specific surface area of ​​the porous activated carbon is 500 to 700 m² / g. It has an adsorption rate of 130% to 145% for carbon tetrachloride, exhibiting excellent adsorption performance.

The application discloses a kind of barashamu splicing fixed-width cutting methods, it is related to timber processing technical field, including using laser line marker to mark the splicing end of board;According to laser marking line, the position and angle of splicing board are adjusted;Board is spliced together;Again using laser line marker marks the outer contour line of splicing qualified board;Spliced board is placed in outer contour line;Image acquisition device is used to photograph board after splicing, and the image obtained is input into image processing and analysis system;With the help of image processing and analysis system, the uniformity of board splicing joint and the shielding condition of outer contour line are checked and analyzed;Take the board that passes inspection and analysis, and place it on the clamp of cutting mechanism.The method introduces advanced technologies such as laser marking, image processing and analysis, realizes accurate control and automatic inspection of the splicing and cutting process, greatly improves the quality and production efficiency of product.

The invention relates to a balsa wood core material square splicing density optimization method based on an intelligent algorithm, which comprises the following steps: S1, automatic detection and sorting: obtaining the weight and size of each balsa wood batten through a weighing and volume measuring device on an assembly line, and automatically removing battens with unqualified density; s2, squaring scheme optimization: inputting the density value rho i of each qualified batten in the step S1 into a trained squaring optimization algorithm model, and outputting an optimal batten arrangement matrix P; and S3, squaring execution is conducted, specifically, a squaring device is controlled to conduct automatic squaring operation according to the arrangement matrix P, and balsa wood core material blanks with the uniform density are formed. The method has the advantages that through automatic accurate detection and sorting, the possibility that battens with unqualified density flow into a production link is eradicated, the overall density homogenization of the spliced cubes can be realized through an intelligent algorithm, and the quality consistency and reliability of composite material products are improved.

The application relates to a grafting of light wood and an efficient breeding method thereof, and belongs to the grafting technical field. The breeding method comprises the following steps: S1, preparing a stock; S2, preparing a scion; S3, grafting the bud grafting scion in S2 to the morphological upper end of the stock in S1 through skin grafting, and topping the stock; after grafting, a to-be-fused plant is formed, the to-be-fused plant is cultured in a dark condition for 20-30 days, and a grafted fused plant is obtained; and S4, the grafted fused plant is induced and cultured through a plant growth regulator. According to the method, a two-year-old diploid light wood seedling is used as the stock in spring, a diploid light wood scion is used, grafting is carried out through skin grafting, and the light wood secretion at the grafting wound is treated in the skin grafting grafting process, so that the grafting survival rate of the light wood is up to 78% or more. The method realizes combination of excellent parents, and in-vivo preservation and propagation of excellent germplasm resources.

The invention provides a manufacturing method of a cork wood core material. The method comprises the steps that a cork wood sheet material is provided; the balsa wood sheet is subjected to potting treatment, so that a potting balsa wood sheet is prepared; removing a specific defect part of the potting cork wood sheet, and forming a maintenance hole; and the maintenance holes are subjected to filling treatment, so that the balsa wood core material is manufactured. Thus, according to the method, the balsa wood sheet is subjected to potting treatment firstly, so that the specific defect part of the balsa wood sheet appears, then the specific defect part is removed, the formed maintenance hole is subjected to filling treatment, and therefore the phenomenon that the balsa wood core material manufactured based on the manufacturing method has specific defects can be avoided; the structural strength and the mechanical property of the balsa wood core material are favorably improved.

This invention discloses a biomass-based p-n type dual-drive evaporative power generation device, comprising a water tank, an n-type device body, and a p-type device body. The n-type and p-type device bodies are disposed in the water tank. An n-type upper electrode and a p-type upper electrode are respectively disposed at the upper ends of the n-type and p-type device bodies. The p-type device body is composed of ammonium-modified lignin-free balsa wood, and the n-type device body is composed of leather tanned with vegetable tanning agents and retanned with AMPS. This invention also discloses a method for preparing the biomass-based p-n type dual-drive evaporative power generation device. By connecting the bottom with an aqueous solution, positively charged ammonium-modified balsa wood and negatively charged modified leather are integrated to construct a dual-drive water evaporative power generation structure. Under the synergistic enhancement effect of the dual drives, the reverse potential difference generated at the top is significantly increased, making the actual output voltage greater than the sum of the absolute values ​​of the voltages of the p-type and n-type devices operating individually.

The invention discloses a carbonized balsa wood core material for a wind power blade and a preparation method and application of the carbonized balsa wood core material, and relates to the technical field of wind power blades. According to the technical scheme, the preparation method of the carbonized balsa wood core material for the wind power blade comprises the following steps that round balsa wood is cut and processed into battens, then the battens are sequentially subjected to carbonization treatment and drying treatment, and then the battens are squared to form a BLOCK blank; and the BLOCK green body is sequentially subjected to flat cutting repairing, sanding, four-edge cutting, surface treatment, grooving and punching, dicing, chamfering and sleeve cutting, and the carbonized balsa wood core material for the wind power blade is obtained. According to the carbonized balsa wood core material prepared through the preparation method of the carbonized balsa wood core material for the wind power blade, on the premise that the inherent advantages of low density and high specific strength of balsa wood are reserved, the moisture content is stably controlled to be 6%-8% for a long time, the dry shrinkage rate is smaller than or equal to 2%, and the carbonized balsa wood core material can meet the service requirement of the wind power blade.

This utility model relates to a tailstock structure for a billiard cue, comprising a tailstock body. The tailstock body has a first elongated hole extending along its length at its larger diameter end and a second elongated hole extending along its length at its smaller diameter end. Both the first and second elongated holes are blind holes. A first carbon fiber tube is inserted into the first elongated hole, abutting the bottom of the hole. A balsa wood post is inserted into the second elongated hole, with one end abutting the bottom of the hole and the other end flush with the opening of the second elongated hole. This utility model enables more uniform quality in the tailstock portion of the billiard cue, and provides better strength, stiffness, and feel.

The utility model discloses a balsa wood powder removal device before microwave, which relates to the technical field of balsa wood production equipment, and comprises a rack and a dust removal box body arranged on the rack, the dust removal box body comprises a mounting box body, a dust blowing mechanism and a conical collector, the dust blowing mechanism is fixedly mounted on the inner side of the mounting box body, and the conical collector is mounted on the rack. And the conveying rollers drive the plates to move towards the dust removal box, and dust on the outer walls of the plates is removed through the dust blowing mechanisms. According to the balsa wood powder removing device before microwave treatment, balsa wood plates needing to be subjected to microwave treatment are conveyed through the conveying rollers, under the action of the conveying rollers, the balsa wood plates pass through the dust removing box body and the dust blowing mechanism arranged in the mounting box body, wood dust attached to the outer walls of the plates is swept away, and the situation that after the wood dust enters microwave equipment, the wood dust is blown away is avoided. And wood dust attached to the plate is ignited and ignited, so that the safety of the microwave drying process can be improved.

The invention relates to the technical field of solid waste treatment, in particular to a method for recycling a wind power blade through low-temperature non-catalytic oxidation. The method comprises the following steps: placing the pretreated waste wind turbine blade in a polar mixed solvent, introducing oxidizing gas, and reacting at 20100 DEG C for 0.55 h, so that epoxy resin is subjected to oxidation chain scission; introducing pure oxygen or oxygen-rich gas, and continuously reacting at 20130 DEG C for 0.55 h to realize deep degradation of the resin; then separating out a fiber material, balsa wood and organic liquid through a gravity settling flotation combined process; purifying and drying the fibers to obtain high-purity and high-strength recycled fibers; after the organic liquid is evaporated and separated, light components are recycled as solvents, and heavy components and balsa wood are used as energy carriers. The method realizes efficient degradation and resource recovery of the wind turbine blade under mild conditions of no catalyst and no strong acid and strong alkali, has the advantages of low energy consumption, small fiber damage, environmental friendliness, simple process flow and the like, and is suitable for large-scale recovery treatment.

The invention discloses a preparation method of a cation modified delignification biochar material, which comprises the following steps: carrying out delignification treatment on balsa wood and paulownia wood, carrying out low-temperature pyrolysis at 300 DEG C, and modifying 2, 3-epoxypropyltrimethylammonium chloride (EPTAC) to prepare an efficient adsorbent with a macroporous structure, hydrophobicity and electropositivity. According to the application, efficient adsorption of micro-plastics is realized through synergistic mechanisms such as electrostatic attraction, pi-pi interaction, hydrophobic interaction and hydrogen bonds, the maximum adsorption capacity reaches 463.7 mg g, the removal rate in an actual water body exceeds 89%, and excellent cycle stability is achieved. The problems that a traditional wood-based adsorbent is high in cost, low in efficiency and difficult to recycle are solved, and a sustainable technical path is provided for micro-plastic pollution treatment.

This invention provides a culture medium and method for culturing balsa wood callus, belonging to the field of plant tissue culture technology. The culture medium, through a scientific combination of seed germination medium and callus induction medium, achieves highly efficient induction of balsa wood callus. Using 1 / 2 MS medium as the seed germination medium effectively improves the seed germination rate; the callus induction medium significantly enhances the callus induction rate while ensuring that the induced callus is loose in texture, grows vigorously, and exhibits no obvious browning. This solves the technical problems of easy browning, low induction efficiency, and poor stability in the callus induction process of balsa wood as a woody plant. The culture medium and method provided by this invention provide key technical support for the establishment of a balsa wood regeneration system, thereby helping to overcome the shortage of balsa wood raw materials in my country and providing important guarantees for the sustainable and healthy development of the wind power industry and related fields.

This invention belongs to the technical field of biomass-based electromagnetic shielding materials, specifically relating to a layered flexible WPU / Ni / wood composite material with a raised structure, its preparation method, and its applications. Using natural balsa wood as a matrix, a conductive-magnetic network is constructed on the wood surface through chemical nickel plating. This is combined with a flexible composite structure of waterborne polyurethane (WPU), polyethylene glycol (PEG), and a silane coupling agent (KH550), and then cold-pressed to obtain a flexible nickel-plated multilayer wood-based composite material (F-BWN). This composite material exhibits excellent Joule heating properties and adjustable infrared stealth capabilities. This invention provides a new pathway for developing high-performance, sustainable flexible electromagnetic shielding materials, promoting the high-end and diversified application of biomass materials in flexible electronics and intelligent protection, and facilitating the industrial upgrading of green functional materials.

The utility model relates to the technical field of balsa wood drying equipment, and discloses a drying device for controlling the moisture content of balsa wood, which comprises a microwave drying machine, a feeding assembly is arranged on the front side of the microwave drying machine, the feeding assembly comprises a feeding frame fixed on the front side of the microwave drying machine, and a lifting plate is arranged in the feeding frame in a sliding mode. Connecting plates are fixed to the positions, close to the front side and the rear side, in the feeding frame, and a cross-shaped driving frame is rotationally connected to the position, close to the rear side, in the feeding frame. The feeding frame is arranged, the rotatable cross-shaped driving frame is arranged above the feeding frame and used for avoiding a forklift and conveying balsa wood into the feeding frame, and then the balsa wood on the uppermost layer is sequentially lifted to the same height as a conveying belt of the microwave dryer by driving the lifting plate. And then a push plate is driven to push the balsa wood into a conveying belt of the microwave dryer, automatic continuous feeding of the balsa wood is achieved, the feeding efficiency of the balsa wood is effectively improved, and the drying and water controlling efficiency of the balsa wood is improved.

The application discloses a kind of nondestructive defect batten density detection method and system, it is related to batten detection field, it is set with corresponding sample label to each batten surface image in sample set, and with preset proportion random division sample set obtains defect detection training set and test set;The density of each batten surface image corresponding batten sample in test set is measured, and with density value as label value, corresponding batten surface image is marked to obtain target test set;The density of the batten surface image to be measured corresponding batten sample in defect detection training set is measured, and with density value as label value, the batten surface image to be measured is marked to obtain density detection training set;Through the training set and test set described above, batten surface defect and density detection model are trained and tested, obtain target detection model, and predict density value after detecting defect-free batten by target detection model, it realizes the rapid joint detection of batten surface defect and density by the same model.

The present disclosure provides new and innovative lost circulation material that is fabricated from mechanically reducing wind turbine blades to fragments (e.g., fibers, particles, etc.). The lost circulation material includes fibrous materials from one or more wind turbine blades, such as fiberglass, carbon fiber, balsa wood, and resin. The lost circulation material can be used as an additive in drilling mud or cement to treat the problem of lost circulation. In this way, fabricating lost circulation material from wind turbine blades provides safe and permanent disposal of industrial byproducts.