30results about How to "Meet the preparation requirements" patented technology

The invention relates to a resin binder for the plastic gravure composite ink, in particular to a preparation method of a resin binder for the single-fluid general plastic gravure alcohol-soluble and water-soluble composite ink. The invention provides a preparation method of a polyacrylate-polyurethane resin binder for the single-fluid general plastic gravure alcohol-soluble and water-soluble composite ink. The method uses (methyl) acrylate, vinyl acetate, polymerizable polyurethane macromonomer and activated functional monomer as raw materials and is prepared by the radical polymerization ofsolution. As polyurethane branch chains are introduced, the composite ink has good adhesive force to various plastic film substrates such as BOPP, PET, PA, PVC, PE and PC, good printing adaptability and high combined strength, and can adapt to various laminating adhesives such as fat-soluble laminating adhesives and alcohol-soluble laminating adhesives. The preparation method of the resin binder for the ink is easy, the prepared ink has good printing effect and high adaptability and can be used for printing various plastic substrates; crosslinking component is not needed to use, the resin binder has convenient operation and high combined strength; the resin binder is alcohol-soluble, water-soluble, economical and environmentally friendly, and has wide application prospect in the plastic gravure composite ink field.

The invention discloses a device and a method for preparing a multiscale fiber reinforced composite material through the electric wire separating method. The device comprises a rack, a forming device,an electrostatic wire separating device and a powder paving device, wherein the electrostatic wire separating device comprises a wire separating table, a first press cake and a second press cake, wherein a wire pressing groove is formed in the upper part of the wire separating table; a wire separating table through hole is coaxial with a working table through hole; two groups of wire separating grooves are formed in the two sides of the wire pressing groove and are oppositely formed in the two sides of the wire separating table through hole; each group of wire separating groove comprises a plurality of parallel wire separating grooves; the first press cake and the second press cake are hinged to the bottom surface of the wire pressing groove; the forming device comprises a forming die anda convex die coaxially arranged; and the convex die is arranged in the forming die. The device can prepare multiscale fiber composite material and can prepare continuous fiber and chopped fiber reinforced composite materials simultaneously. The preparation method and the process are continuous, rapid and efficient, and the performance features of the continuous fiber and chopper fiber reinforcedcomposite materials can be taken into account.

The invention relates to a cephalosporin ester drug particle in a non-gel state after meeting water, and a preparation method and an application of the drug particle, and belongs to the technical field of pharmaceutical preparations. The drug particle comprises the following raw and auxiliary materials: a cephalosporin ester drug with the bulk density of 0.1-0.3g / ml, and the following auxiliary materials accounting for the mass percentage of the cephalosporin ester drug as follows: 2-4.5% of micropowder silica gel, 2-4.5% of anti-gel adjuvant, and 12-16% of disintegrating agent, wherein the anti-gel adjuvant is a glidant and / or a lubricant with the bulk density greater than 0.50g / ml. According to the cephalosporin ester drug particle in the non-gel state after meeting the water, and the preparation method and the application of the drug particle, the problem that the dissolution rate is relatively low due to the fact that gelatinization is severe when the cephalosporin ester drug is dissolved out in the water in the prior art is solved, the dispersity and the hydrophilicity in a dissolution-out process are good, no gelatinization exists, and the dissolution rate is increased greatly.

The invention discloses a large-sized Ni-Cr electrothermal alloy blank and a hot working method, belonging to the technical field of metallurgical production technology. Provided are a large-sized Ni-Cr electrothermal alloy blank and a hot working method with relatively high finished product quality and significant reduction in subsequent use costs. The large-sized Ni-Cr electrothermal alloy blank is a superalloy blank containing the following components in parts by weight, and the components in parts by weight are C≤0.05%, Si 0.9-1.60%, Al≤0.50%, Cr 20.0‑22.0%, Mn≤0.3%, Fe≤1.0%, P≤0.010%, S≤0.010%, Ti≤0.01%, Zr 0.1‑0.25%, Re≤0.2%, the balance is Ni and inevitable impurities , Among them, the tensile strength of the finished superalloy material is ≥760MPa, and the elongation rate is ≥55%. The thermal processing method first adopts vacuum induction melting + electroslag remelting to prepare Ni-Cr electrothermal alloy electroslag round ingots with a unit weight exceeding 1.2 tons according to the above-mentioned components in parts by weight, and then sequentially processes the electroslag round ingots. Forging and precision forging, and finally hot rolling to obtain material with a single weight of more than 800kg.

The invention provides an agomelatine-containing medicinal composition, which not only solves the problem of the dissolution of agomelatine in different crystal forms, but also meets the requirements of preparations for prescriptions and processes. The composition has the advantages of simple preparation process, convenience for operation, transport and storage, wide application range and suitability for large-scale production.

The invention relates to a method for synthesizing an electrolyte sample used for sodium expansion rate testing, comprising: firstly mixing cryolite, sodium fluoride, calcium fluoride and alumina according to a certain ratio, then mixing the mixture and pouring it into graphite Heat the crucible to the melting temperature and keep it warm for a certain period of time, stirring constantly to make the bubbles escape. Then use a suitable sampling tool to scoop out the melt and cool it down to form an electrolyte sample block. The sample block is roughly crushed to less than 3mm with a jaw crusher, and the sample is divided into two parts: one part is crushed with a pair of rollers Machine crushed to about 1mm-2mm, one part of the sample ground by a sample mill completely passed through the 0.075mm test sieve, and the two parts of the sample were mixed in a certain proportion to obtain an electrolyte sample that meets the determination of the sodium expansion rate. The invention uses melting and particle size mixing to prepare electrolyte samples for the sodium expansion rate test, and the final electrolyte reagent can replace imports, is more economical and applicable, and can meet the preparation requirements of crucibles of different sizes.