9results about How to "Flexible preparation method" patented technology

The invention provides a preparation method of multi-size patterned white bamboos, which comprises the following steps: selecting mature bamboos with intact appearance, cutting the bamboos into required sizes, and polishing off a wax coat on the surface and a thin film in the bamboos; then carrying out drying treatment at the temperature of 80 to 110 DEG C, wherein the drying time is 24 to 72 hours; putting the bamboo wood into an alkaline solution, soaking for 10-20 minutes at normal temperature, taking out and airing, and coating the surface of the bamboo wood with a bleaching solution; the bamboo wood is placed under a light source for illumination, and photocatalytic oxidation is conducted till the whole color or the local color of the bamboo wood becomes white; and then the bamboo wood is placed in an organic solvent, after ultrasonic cleaning is conducted for 5-10 min, natural drying is conducted, and the white bamboo wood is obtained. The preparation method of the multi-size patterned white bamboo wood is simple in process and not limited by the size of raw materials, the overall white bamboo wood can be prepared, the local patterned white bamboo wood can also be prepared, the structural integrity of the bamboo wood can be kept while high whiteness (larger than or equal to 90%) is achieved, and the prepared white bamboo wood is high in mechanical strength.

The invention relates to the technical field of lithium ion batteries, and discloses a polymer solid-state electrolyte membrane and a preparation method thereof and a solid-state lithium metal battery, and the method for preparing the polymer solid-state electrolyte membrane comprises the following steps: (1) carrying out first mixing on a polymer, a lithium salt, a plasticizer and a first solvent to obtain a polymer solid-state electrolyte solution; the first solvent is at least one of good solvents; (2) coating a substrate with the polymer solid electrolyte solution to obtain a substrate I containing the electrolyte solution; and (3) placing the substrate I in a second solvent for precipitation treatment to obtain the polymer solid electrolyte membrane, the second solvent is at least one of poor solvents; the volume ratio of the dosage of the first solvent to the dosage of the second solvent is 1: (0.2-5). The polymer solid electrolyte membrane provided by the invention has a membrane forming effect consistent with that of a traditional process, and is low in crystallinity and relatively high in ionic conductivity.

The application discloses a kind of high-performance magnesium-lithium alloy materials, the high-performance magnesium-lithium alloy material is obtained by being compacted by magnesium-lithium alloy powder into mould, then sintering densification is carried out, in addition, the application also provides a kind of preparation method of high-performance magnesium-lithium alloy material, comprising the following steps: one, Mg-8Li-9Al-1Zn alloy powder is weighed and loaded into mould;Two, the powder in the powder loaded mould is compacted;Three, the mould with compacted powder is sintered densification in vacuum, and high-performance magnesium-lithium alloy material is obtained in mould.The high-performance magnesium-lithium alloy material of the application uses Mg-8Li-9Al-1Zn alloy powder as raw material, is compacted by being loaded into mould, then sintering densification is carried out, process flow is short, cost is low, operation is simple, flexible, the obtained high-performance magnesium-lithium alloy material component is uniform, organization is small, and the organization, structure of material can be designed, easily controlled, and the compressive strength is greater than 500MPa.

The invention provides imide secondary amino resin and a preparation method thereof, and relates to the technical field of amino resin. The structure of the imide secondary amino resin is # imgabs0 #, X is selected from a divalent organic structure which is left after two primary amino groups of a diamine compound are removed and is reactive with an isocyanate group at 100 DEG C and has the average molecular weight of 50-5000, R1 and R2 are independently selected from C5-C6 cycloalkyl, C6-C12 substituted cycloalkyl, C1-C20 alkyl or C2-C20 substituted alkyl, and the end groups of R1 and R2 are independently not-OH or-NH2. Compared with aspartic acid ester resin, the imide secondary amino resin disclosed by the invention has better heat resistance and hydrolysis resistance and higher mechanical strength.

The invention belongs to the technical field of birefringence device preparation, and particularly relates to an antimony selenide-based artificial in-plane birefringence device, which comprises a substrate layer and a phase change material layer, the phase change material layer is provided with grid peaks and grid valleys which are alternately arranged, the grid peaks are in a crystalline state, and the grid valleys are in an amorphous state. The device adopts a special phase state alternating grating structure, not only retains the geometric appearance periodicity of the grating, but also realizes the periodicity of an amorphous state and a crystalline state, realizes an adjustable birefringence coefficient within a range of 0.08-0.4 in a visible light wave band, and has an average transmittance of more than 70%. The bottleneck problems that an existing birefringent device cannot be continuously modulated in the visible light range and is poor in flexible programming performance and reconstruction performance are fundamentally solved, and the prepared device has the advantages of being large and continuously adjustable in phase delay amount, continuously adjustable in slow axis angle, low in loss, easy to machine, reliable and the like.

The invention discloses a preparation process of food oil-proof paper, and relates to the technical field of oil-proof papers, and an oil-proof coating is prepared from the following raw materials in parts by weight: 100 parts of flaky soil, 70-100 parts of latex, 0.1-0.2 part of a dispersing agent, 0.1-0.2 part of a defoaming agent, 0-2 parts of sodium carboxymethyl cellulose, 0-1 part of a water-resistant agent, 0-1 part of a lubricating agent and 0-0.5 part of NaOH; the raw materials are uniformly mixed and stirred to obtain the oil-proof coating for later use; preparing food-grade body paper, and coating the oil-proof coating prepared in the step 1 on a coating machine; the coated paper is subjected to infrared drying treatment; and performing an oil-proof grade test on the dried paper. The oil-proof paper is obtained by coating the raw paper with the oil-proof coating and drying, the obtained oil-proof paper has excellent oil-proof performance, and the manufacturing method is flexible, convenient to implement and low in cost.

The invention discloses a lithium ion battery negative electrode composite material, a preparation method thereof, a negative electrode plate and a lithium ion battery, and belongs to the technical field of lithium ion battery materials. The composite material has a core-shell structure, an inner core is a carbon material, and a shell layer is a niobium-tungsten oxide material with different chemical structural formulas. The preparation method comprises the following steps: adding a carbon material, tungsten salt, niobium salt and other raw materials into an organic solution, stirring and standing, adding deionized water and other reactants, generating a corresponding sol-gel product under the action of hydrolysis / alcoholysis reaction, and drying to form a tungsten-niobium mixed initial coating layer on the surface of the carbon material; and finally, performing high-temperature treatment in an inert atmosphere to obtain the niobium tungsten oxide material coated carbon material composite material negative electrode. Comprising the composite material can be reassembled into a lithium ion battery, a battery pack, a 3C consumer electronic product, a new energy automobile and other electronic equipment.

The invention discloses an anti-hemolysis hydrogel coating as well as a preparation method and application thereof, a micron-sized porous structure and a hydrophilic silane bonding layer are constructed on the surfaces of various base materials, and the adhesive force of the hydrogel coating and the base materials is remarkably enhanced through a physical topology winding and covalent bond connection method. Through the methods of spraying, dipping, coating, mold forming and the like, the device can be suitable for blood contact medical instruments with different shapes and materials; by adjusting the formula and preparation process parameters of the hydrogel, the special requirements of different medical instruments can be met, and the hydrogel has wide applicability and good expandability. Through optimized materials and design, the anti-hemolysis hydrogel coating disclosed by the invention has remarkable technical advantages in the aspects of reducing hemolysis risk, improving biocompatibility, simplifying the structure of medical equipment and the like.

This invention belongs to the field of new energy storage materials technology, specifically relating to a method for preparing and applying an ultrathin copper current collector modified with a carbon nanotube composite coating. Addressing the problems of strong lithium repellency, uneven metal deposition, and short cycle life of copper current collectors in electrodeless lithium-ion batteries, this invention constructs a composite functional layer on an ultrathin copper foil, composed of zinc-based oxide rich in oxygen vacancies and carbon nanotubes. In this coating, the zinc-based oxide acts as a highly lithium-affinity site, effectively reducing the metal nucleation overpotential; the carbon nanotube network provides a rapid electron conduction path and alleviates deposition stress. The preparation process is environmentally friendly, employing an aqueous slurry system and a simple heat treatment process. This modified current collector, used in electrodeless lithium-ion batteries, can guide uniform and dense metal deposition, significantly improving the battery's coulombic efficiency and cycle stability.