Method for recycling and processing waste powder of powder coating into solvent type coating

Abstract

The invention discloses a method for recycling and processing waste powder of a powder coating into a solvent type coating. The method is characterized by comprising the following steps: collecting the waste powder of the powder coating and classifying; screening, removing the impurities, drying and airing (if the waste powder is affected by dampness); weighing special solvents and special additives according to the proportion, and stirring and dispersing; mixing 60 percent of waste powder and 40 percent of solvents with the additives, dispersing to reach a specified fineness under constant temperature and constant pressure, and grinding to reach the regular fineness by using a grinding machine if the specified fineness does not reach; adding color paste to regulate; regulating by using color paste formed by grinding resins and pigments and regulating the velocity by using methylbenzene and xylene; filtering and packing; adding a proper amount of polyurethane curing agent and mixing with the coating; brush-coating, spray-coating and rolling-coating. According to the method, the outdoor and indoor waste powder is renewedly processed into the solvent type coating through special materials, solvents and techniques; because the raw material contains epoxy resins, polyester resins and the like with high performance, the prepared coating is extremely-high in corrosion resistant performance and relatively high in surface decoration performance; moreover, the cost is only half of an ordinary similar series product, so that the cost is greatly reduced.

Description

technical field [0001] The invention relates to a method for reutilizing waste powder of powder paint and processing it into solvent-based paint. Background technique [0002] In many places with poor environmental protection management, most of the ultrafine powder generated during the production process is directly discharged into the atmosphere. Even if some units have collected the waste powder, it is difficult to reuse the collected waste powder, resulting in industrial waste. , These wastes are sent to the disposal center for disposal, and you have to pay a fee of several thousand yuan per ton. Some units simply treat them as ordinary garbage. Among these wastes, about 70% are resins, and 30% are pigments and fillers. , causing a waste of resources and seriously polluting the environment. [0003] Therefore, prior art needs to be improved. Contents of the invention [0004] In order to solve the deficiencies of the prior art, the present invention provides a method...

AI Technical Summary

Problems solved by technology

[0002]In many places with poor environmental protection management, most of the ultrafine powder produced during the production process is directly discharged into the atmosphere, even if some units have managed to collect waste powder, and The collected waste powder is difficult to reuse, resulting in industrial waste. These wastes are sent to the disposal center for disposal, and you have to pay a fee of several thousand yuan per ton. Some units simply treat them as ordinary waste. Among these wastes , containing about 70% resin, 30% pigment and filler, resulting in waste of resources and serious pollution of the environment

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