Method for preparing powder of nylon

Abstract

A process for preparing the nylon powder includes such steps as dissolving nylon resin in alcohol-type solvent, and pressure-type spray drying. Said solvent can be recovered for reuse.

Description

technical field

[0001] The invention relates to an improved preparation method of nylon powder, which belongs to the technical field of chemical industry. Background technique

[0002] Nylon-based powder coatings have high chemical resistance and good mechanical properties. At present, the methods for obtaining nylon powder generally include cryogenic pulverization, solvent precipitation, and direct polymerization.

[0003] Among them, cryogenic crushing uses a pulverizer to cool and crush in liquid nitrogen. This method has a relatively simple process, but cryogenic equipment is required, and a large amount of cryogenic carriers are needed in the production process, and the shape of the particles obtained by crushing is irregular, which is difficult to obtain. Spherical particles with wide particle size distribution, accompanied by degradation and loss of resin.

[0004] The solvent precipitation method is to choose a certain solvent, nylon, which has good solubility at hi...