What is NMP?

N-methylpyrrolidone (N-methylpyrrolidone), also known as 1-methyl 2-pyrrolidone, or NMP for short, is a polar aprotic solvent with high boiling point, strong polarity, low viscosity, strong solubility, and no corrosion. , Low toxicity, strong biodegradability, low volatility, excellent chemical stability and thermal stability.

NMP is a highly efficient and selective solvent that is easy to recycle, widely used in petrochemical, plastics industry, pharmaceuticals, pesticides, dyes, and lithium-ion battery manufacturing. 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.

For example, NMP is in the batching stage: as a PVDF solvent, it participates in the dispersion of the slurry to form a slurry with a uniform medium and a long-term stability within a certain viscosity range;

In the coating stage: as the main liquid carrier of the slurry, it is uniformly coated on the metal substrate with a stable thickness, and it is required to have very good wettability and fluidity with the metal substrate;

In the coating and baking stage: the wet film runs at a uniform speed in the oven, the solvent volatilizes regularly, NMP undertakes the pore-forming function, and the NMP volatilizes from the wet film at a stable speed to form a porous microelectrode structure with uniform pore size and uniform distribution.