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Process method for regenerating flame-retardant plastic particles by using waste powder coating

A technology of powder coatings and flame-retardant plastics, applied in the field of recycled plastics, can solve the problems of high baking temperature of powder coatings, achieve high economic added value, save labor, and reduce labor and costs

Inactive Publication Date: 2020-09-25
蒋娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The baking temperature of powder coating is relatively high, generally above 150°C, most of which are between 180°C and 200°C, which is not suitable for coating substrates such as plastics, wood, and paper with poor heat resistance
It is also not suitable for the coating of heat-resistant items such as solder parts and electronic components

Method used

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  • Process method for regenerating flame-retardant plastic particles by using waste powder coating

Examples

Experimental program
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Effect test

Embodiment 1

[0017] A process for regenerating flame-retardant plastic particles from waste powder coatings, comprising the following steps:

[0018](1) Modified treatment of waste powder coatings: peel off the waste powder coatings on the coating surface; use dispersant to break and disperse, and then use electromagnetic iron remover to remove iron to obtain clean waste powder coatings; the waste powder coatings It is a polyester powder coating; (2) the waste powder coating in step (1) is subjected to sedimentation, impurity removal and dispersion modification to obtain a modified mixture; wherein, the specific process of modification is to process the obtained mixture in step (1) The clean waste powder coating sinks into a settling tank containing water 1.3 times the weight of the clean waste powder coating, and settles together with the water. Add an inorganic dispersing agent calcium oxide 0.1 times the weight of the clean waste powder coating to the settling tank and stir evenly for 20...

Embodiment 2

[0020] A process for regenerating flame-retardant plastic particles from waste powder coatings, comprising the following steps:

[0021] (1) Modified treatment of waste powder coatings: peel off the waste powder coatings on the coating surface; use dispersant to break and disperse, and then use electromagnetic iron remover to remove iron to obtain clean waste powder coatings; the waste powder coatings It is a polyethylene powder coating; (2) the waste powder coating in step (1) is subjected to sedimentation, impurity removal and dispersion modification to obtain a modified mixture; wherein, the specific process of modification is to process the obtained product in step (1) The clean waste powder coating sinks into a settling tank containing water 1 times the weight of the clean waste powder coating, and settles together with the water, and adds an inorganic dispersing agent aluminum trichloride 0.1 times the weight of the clean waste powder coating to the settling tank to evenl...

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Abstract

The invention discloses a process method for regenerating flame-retardant plastic particles from waste powder coating. The invention belongs to the technical field of recycled plastics. The prepared recycled plastic particles have obvious cost advantages; particularly, the price of plastic raw materials rises greatly recently; the requirements of the market on reclaimed materials are further improved; according to the invention, the requirements can be greatly met; the conversion and metabolism rules of material energy in the recycling process of the waste powder coating are utilized; the regeneration process does not comprise the melting extrusion molding granulation of the conventional regenerated plastic particles, so that the high manufacturing cost and complex process procedures of equipment such as an extruder are reduced, the labor is saved, the labor and the cost are greatly reduced, and the prepared regenerated plastic particles have extremely high economic added value.

Description

technical field [0001] The invention belongs to the technical field of recycled plastics, and in particular relates to a process method for recycling flame-retardant plastic particles from waste powder coatings. Background technique [0002] Powder coating is a solid powder synthetic resin coating composed of solid resin and pigments, fillers and additives. Unlike ordinary solvent-based paints and water-based paints, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation, and low energy consumption. However, the powder coating manufacturing equipment cannot directly use solvent-based or water-based coating manufacturing equipment, and must use special equipment for manufacturing powder coatings. In the powder coating manufacturing process, the most difficult problem is toning, which is different from solvent-based and water-based coatings. Similarly, color paste or toner cannot be directly used for c...

Claims

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Application Information

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IPC IPC(8): C08J11/06C08L67/00C08L33/08C08L27/06C08L23/06C08L77/00C08L27/16C08K5/11C08K5/09
CPCC08J11/06C08J2323/06C08J2327/06C08J2327/16C08J2333/08C08J2367/00C08J2377/00C08K5/09C08K5/11C08K2201/014Y02W30/62
Inventor 蒋娜
Owner 蒋娜
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