NMP, PVDF, and PVP are very popular recently?

NMP N-methylpyrrolidone (N-methylpyrrolidone), also known as 1-methyl2-pyrrolidone, or NMP for short, is a polar aprotic solvent with high boiling point, strong polarity, low viscosity, strong solubility,NMP supplier and no Corrosive, low toxicity, strong biodegradability, low volatility, excellent chemical stability and thermal stability, NMP is an easy-to-recycle, highly efficient and selective solvent, widely used in petrochemicals, plastics industry, pharmaceuticals, pesticides, dyes and Lithium-ion battery manufacturing industry, etc. NMP is a very important auxiliary material for the production of lithium-ion battery electrodes. It is the most commonly used solvent in the front-end batching process of lithium-ion batteries, commonly known as methyl. In the electrode batching stage, NMP participates in slurry dispersion in proportion with PVDF and conductive agents to form a slurry with a uniform medium and a stable viscosity within a certain viscosity range for a long time; in the coating stage: as the main liquid carrier of the slurry. Stable thickness and uniform coating on the metal substrate require very good wettability and fluidity with the metal substrate; during the coating and baking stage: the wet film runs at a constant speed in the oven, and the solvent volatilizes regularly, NMP Assuming the pore-making function, NMP evaporates from the wet film at a stable rate, forming a porous microelectrode structure with uniform pore size and uniform distribution.

What is PVDF?

PVDF, Poly (vinylidene fluoride), the English abbreviation PVDF is polyvinylidene fluoride, is a highly non-reactive thermoplastic fluoropolymer. It has the characteristics of both fluororesin and general-purpose resin,nmp in addition to having good chemical resistance , high temperature resistance, oxidation resistance, weather resistance, and radiation resistance, it also has special properties such as piezoelectricity, dielectricity, and thermoelectricity. The paint film made of fluorocarbon paint made of 70% PVDF resin and baked through spraying or roller coating has unparalleled super weather resistance and processing performance. In lithium secondary batteries, PVDF is mainly used as a binder for cathode materials in lithium batteries. Currently, this use has become one of the fastest growing markets for PVDF demand.

What is PVP?

PVP: Polyvinylpyrrolidone, POLYVINYLPYRROLIDONE (PVP for short), molecular formula: (C6H9NO)n. Industrial-grade PVP applications mainly include powder or liquid. Generally, the greater the K value, the greater the viscosity and the stronger the adhesion. PVP-K series can be used as film agents, thickeners, lubricants and adhesives in the daily chemical industry. They can be used in hair spray, mousse, hair setting gel,lithium from battery hair setting liquid, etc. to enhance the moistening and lubricating effect. In recent years, the application of lithium batteries has increased dramatically. As a polymer surfactant, it can be used as a dispersant in NMP conductive slurry for lithium batteries. Lithium iron phosphate battery cathode slurry is a mixture of solid dry material and solvent. The solid dry material is composed of lithium iron phosphate, conductive agent, polyvinylidene fluoride (PVDF), and PVP. The solvent is water, ethanol or nitrogen methyl. Pyrrolidone NMP. PVP is used as a dispersant for the conductive agent CNT in the lithium iron phosphate battery cathode slurry, which can effectively disperse CNT, thereby producing a cathode slurry with excellent performance. The lithium iron phosphate battery in the positive electrode of this process slurry battery has excellent rate performance, increases the battery capacity during charge and discharge, greatly reduces the temperature rise of the battery during the discharge process, and improves the battery's discharge platform.