1. Surface coating
NMP is a non-corrosive and high boiler with excellent solvent performance, chemical and thermal resistance. Therefore, NMP improves the performance of many surface coating systems. In particular, these effects are conducive to the curing of dry coatings at relatively high temperatures. NMP is suitable for the production of highly filled paints. Because it improves the rheological properties and improves the fluidity and coverage of the paint, the paint is more uniform, porous and crack-free, showing greater resistance and higher mechanical strength.
NMP is an excellent solvent for most paint raw materials, such as acrylate, epoxy resin, polyurethane, polyvinyl chloride system, Enamel-based polyamide, water-borne paint and printing ink.
NMP is a very useful solvent for butadiene acrylonitrile polymer (NBR) as the lining of the container. Rubber mixtures have better fluidity and horizontality than those containing ketones.
Vinyl chloride-vinyl acetate-copolymer can be dissolved in the mixed solution of NMP and mononuclear aromatic hydrocarbons. It can be used for film injection. Under the action of the two solvents, the mixed solution has low viscosity and can be used at any time.
Application of NMP and PVDF in lithium ion batteries
The main organic solvent for slurry mixing of lithium-ion battery electrodes is N-lithium battery-methyl pyrrolidone. The characteristics of N-methyl pyrrolidone have a significant impact on lithium-ion battery performance from the process of pole mixing to the battery characteristics, especially the battery cycle life. PVDF has two main uses in lithium batteries. One is to dissolve PVDF in NMP as an adhesive for electrode coating. The repetitive units in the chemical structure of PVDF make it polar and easy to match with NMP which belongs to polar organic solvents.
Another use is to synthesize copolymers from PVDF and other organic materials as one of the electrolyte materials for lithium ion batteries, such as PVDF and HFP (hexafluoropropylene) copolymerization to form PVDF-HFP copolymers with good thermal stability, film formation and chemical resistance. PVDF-based polymer electrolytes have been active in recent years. The trend of development is that N-methyl pyrrolidone can dissolve PVC, PU, PMMA and other coatings < br />. Storage and transportation conditions:
Store in a cool, ventilated warehouse, away from fire and heat sources, and separate from oxidants. Light loading and unloading during handling, keep the package intact and prevent leakage.