4results about How to "Guarantee uniformity" patented technology

This invention relates to the field of lithium battery technology, and in particular to a method for preparing a lithium-ion battery cell. The invention discloses a method for preparing a lithium-ion battery cell, comprising: first, preparing a positive electrode slurry containing modified titanium aluminum carbide, graphene oxide, etc., and a negative electrode slurry containing aminated carbon nanotubes, zinc aluminum spinel, etc., both processed according to specific proportions and processes; second, coating the positive and negative electrode slurries separately onto a current collector, and obtaining positive and negative electrode sheets through drying, coating with a coating agent, etc.; next, preparing a composite separator coated with a separator coating agent and curing it; finally, winding the separator in a positive-separator-negative-separator sequence, and obtaining a lithium-ion battery cell through drying, encapsulation, electrolyte injection, formation, etc.

This invention relates to the field of electronic materials technology, specifically disclosing a copper-based varistor chip electronic paste and its preparation method. The paste is composed of a specific ratio of sheet-like and nano-copper powder, a glass binder phase, an organic carrier, and functional additives. The preparation method employs a multi-stage vacuum dynamic degassing device. This device gently releases large bubbles through a pretreatment chamber, and utilizes a dynamic stirring mechanism with combined revolution, rotation, and reciprocating motions within the main degassing chamber to achieve strong shearing and agitation of the paste across its entire surface. Combined with ultrasonic cavitation, this deeply breaks down bubbles, thereby efficiently and thoroughly removing them. Simultaneously, the device integrates an online viscosity monitoring and intelligent solvent vapor compensation system, enabling real-time adjustment and stabilization of the paste's rheological properties. This invention effectively solves the problems of incomplete bubble removal and performance fluctuations caused by solvent evaporation, significantly improving the density, uniformity, and production consistency of the paste product.

This application discloses a spin-coating carbon composition, a semiconductor fabrication method, and a semiconductor device. The spin-coating carbon composition comprises a cyclic phenolic resin. The cyclic phenolic resin used in this invention has the characteristics of small molecular weight, narrow molecular weight distribution, and active crosslinking groups distributed on the resin periphery. The spin-coating carbon composition based on the cyclic phenolic resin of this invention, while maintaining excellent coating performance, can significantly improve the thermal stability, etching resistance, and pattern fidelity of the thin film, providing a new generation of hard mask materials for advanced semiconductor manufacturing.

This invention relates to the field of polymer material synthesis technology, specifically disclosing a water-dispersible cationic polyacrylamide material and its preparation method. The material is composed of the following raw materials in parts by weight: 45-50 parts modified acrylamide, 15-20 parts cationic monomer, 5-10 parts N-vinylpyrrolidone, 0.8-1.2 parts surfactant, 90-100 parts deionized water, 0.1-0.5 parts crosslinking agent, 3-8 parts hyperbranched polyester Boltorn (H₂O), 0.08-0.12 parts ammonium persulfate, 0.03-0.05 parts sodium bisulfite, and 0.5-0.8 parts aluminum citrate. The preparation process of this invention is simple and highly operable. The provided polyacrylamide material has a high specific surface area, excellent water dispersibility, good stability, and salt resistance, making it suitable for various industrial applications such as water treatment and papermaking, exhibiting good flocculation performance and reinforcing effects.