8 results about "Balsa wood" patented technology

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.

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.

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.

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.

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 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.