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Application method of thermoplastic powder coating
2022-03-26
There are many kinds of thermoplastic powder coatings, but specifically can be divided into two main categories.
It has two major categories: thermoplastic powder coatings and thermosetting powder coatings.
Thermoplastic powder coating is composed of thermoplastic resin, pigment, filler, plasticizer and stabilizer. Thermoplastic powder coatings include: polyethylene, polypropylene, polyester, polyvinyl chloride polyether, polyamide, cellulose, polyester.
Thermosetting powder coating is composed of thermosetting resin, curing agent, pigment, filler and auxiliary agent. Thermosetting powder coatings include: epoxy resin, polyester, acrylic resin.
Powder coating conditions: electrostatic value: 40-80kV Film thickness: 60-70U(lower limit: 50U Upper limit: 90U)
Baking condition: 180℃/20 min Spraying distance: 15-25cm Preservation environment: temperature below 35℃, ventilated and dry place and avoid direct sunlight performance: impact resistance 1KG* 30cMPASS
Precautions for spraying: When adding recycled POWDER proportion to INTERPON SPECIAL POWDER after spraying, attention should be paid to the uniformity of color after adding recycled POWDER. POWDER floating in the POWDER tank should be evenly recycled POWDER with proportion less than 30% (it is best to completely use new POWDER).
Usage of thermoplastic powder coating:
1. Switch on the heating power of the oven, start the conveyor belt, adjust the oven temperature to the curing temperature according to the curing conditions of the powder coating provided by the supplier, and make the running time of the conveyor belt in the oven conform to the curing time, taking into account the decline of the inlet and outlet temperature of the oven and the difference between the actual working temperature and the instrument temperature of the oven. The operating time can be increased by 10-20% or 5-10℃
2. Start the air compressor, randomly check part of the powder coating, insert the powder suction tube of the spray gun into the powder container, adjust the working voltage of 40-80,000 VOLTS, and the air force of 0.8-2.5kg /cm. Spray gun and working distance of 15-25cm. The quantity of powder is better with good atomization degree, spraying a piece or several pieces of work, put into the oven according to the curing conditions of baking, the test spray plate against the sample, check whether it meets the quality requirements.
3, the workpiece is placed on the conveyor belt for degreasing, rust removal, phosphating passivation, water washing, drying water, spraying into the spray room, into the oven according to the curing conditions of baking, cooling out of the oven, the next part inspection, packaging.
It has two major categories: thermoplastic powder coatings and thermosetting powder coatings.
Thermoplastic powder coating is composed of thermoplastic resin, pigment, filler, plasticizer and stabilizer. Thermoplastic powder coatings include: polyethylene, polypropylene, polyester, polyvinyl chloride polyether, polyamide, cellulose, polyester.
Thermosetting powder coating is composed of thermosetting resin, curing agent, pigment, filler and auxiliary agent. Thermosetting powder coatings include: epoxy resin, polyester, acrylic resin.
Powder coating conditions: electrostatic value: 40-80kV Film thickness: 60-70U(lower limit: 50U Upper limit: 90U)
Baking condition: 180℃/20 min Spraying distance: 15-25cm Preservation environment: temperature below 35℃, ventilated and dry place and avoid direct sunlight performance: impact resistance 1KG* 30cMPASS
Precautions for spraying: When adding recycled POWDER proportion to INTERPON SPECIAL POWDER after spraying, attention should be paid to the uniformity of color after adding recycled POWDER. POWDER floating in the POWDER tank should be evenly recycled POWDER with proportion less than 30% (it is best to completely use new POWDER).
Usage of thermoplastic powder coating:
1. Switch on the heating power of the oven, start the conveyor belt, adjust the oven temperature to the curing temperature according to the curing conditions of the powder coating provided by the supplier, and make the running time of the conveyor belt in the oven conform to the curing time, taking into account the decline of the inlet and outlet temperature of the oven and the difference between the actual working temperature and the instrument temperature of the oven. The operating time can be increased by 10-20% or 5-10℃
2. Start the air compressor, randomly check part of the powder coating, insert the powder suction tube of the spray gun into the powder container, adjust the working voltage of 40-80,000 VOLTS, and the air force of 0.8-2.5kg /cm. Spray gun and working distance of 15-25cm. The quantity of powder is better with good atomization degree, spraying a piece or several pieces of work, put into the oven according to the curing conditions of baking, the test spray plate against the sample, check whether it meets the quality requirements.
3, the workpiece is placed on the conveyor belt for degreasing, rust removal, phosphating passivation, water washing, drying water, spraying into the spray room, into the oven according to the curing conditions of baking, cooling out of the oven, the next part inspection, packaging.
4, curing conditions in the relationship between temperature and time is inversely proportional to the relationship, temperature rise, the curing time is shortened, time extension, the curing temperature is reduced.
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