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Method for electrostatic spraying of powder coating on surface of aluminum profile

A technology of powder coating and electrostatic spraying, which is applied in the direction of surface coating liquid device, pretreatment surface, metal material coating process, etc., to achieve good protection effect, easy to realize, and easy to operate

Inactive Publication Date: 2016-07-06
TAICANG JIDA SPRAY COATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a method for electrostatically spraying powder coatings on the surface of aluminum profiles, which can solve the above-mentioned shortcomings existing in the existing electrostatic spraying methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for electrostatically spraying powder coatings on the surface of aluminum profiles, using powder coatings with a particle size of 30-70 μm and containing the following raw materials in parts by weight as coating materials: 50 parts of linear saturated carboxyl polyester, 30 parts of epoxy resin, and nano fillers 15 parts, 2 parts of titanium dioxide, 1 part of precipitated barium sulfate, 3 parts of curing agent, 3 parts of leveling agent, 10 parts of isopropanol, 5 parts of flame retardant, and 5 parts of coupling agent. Wherein, the nano-filler is nano-silicon dioxide and nano-Al with a particle size of 20-50 nm. 2 o 3 powder in a ratio of 1:2; the curing agent is a mixture of hydroxyalkylamide and boron trifluoride complex in a mass ratio of 2:1; the flame retardant is composed of ammonium polyphosphate, melamine and An intumescent flame retardant composed of pentaerythritol mixed in a mass ratio of 2:1:2.

[0024] The specific spraying steps are:

[0025...

Embodiment 2

[0031] A method for electrostatically spraying powder coatings on the surface of aluminum profiles, using powder coatings with a particle size of 30-70 μm and containing the following raw materials in parts by weight as coating materials: 60 parts of linear saturated carboxyl polyester, 40 parts of epoxy resin, and nano fillers 20 parts, 5 parts of titanium dioxide, 3 parts of precipitated barium sulfate, 8 parts of curing agent, 5 parts of leveling agent, 20 parts of isopropanol, 10 parts of flame retardant, and 8 parts of coupling agent. Wherein, the nano-filler is nano-silica and nano-Al with a particle size of 20-50 nm. 2 o 3 powder in a ratio of 1:3; the curing agent is a mixture of hydroxyalkylamide and boron trifluoride complex in a mass ratio of 3:1; the flame retardant is composed of ammonium polyphosphate, melamine and An intumescent flame retardant composed of pentaerythritol mixed in a mass ratio of 3:1:2.

[0032] The specific spraying steps are:

[0033] Surfa...

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PUM

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Abstract

The invention discloses a method for electrostatic spraying of a powder coating on the surface of an aluminum profile. The method comprises the following steps that 1, the powder coating is prepared; 2, the surface of the aluminum profile is subjected to cleaning treatment; 3, passivating treatment is conducted; 4, drying is conducted; 5, electrostatic spraying is conducted; and 6, baking and curing are conducted. The method for electrostatic spraying of the powder coating on the surface of the aluminum profile is easy and convenient to operate and likely to be achieved, on the basis of the selected powder coating, through reasonable modes of surface passivating treatment, electrostatic spraying treatment and stepped baking and curing, not only is the powdering rate of electrostatic spraying effectively increased, but also the apparent quality of an obtained powder coating layer is good, and the hardness and the abrasion resistance are excellent; and meanwhile, the powder coating layer plays a good decorative effect and a protective effect on the aluminum profile, and the comprehensive performance is excellent.

Description

technical field [0001] The invention relates to the technical field of spray coating on the surface of aluminum profiles, in particular to a method for electrostatically spraying powder paint on the surface of aluminum profiles. Background technique [0002] Electrostatic spraying is a spraying method that uses a high-voltage electrostatic electric field to make negatively charged paint particles move in the direction opposite to the electric field, and adsorb the paint particles on the surface of the workpiece. [0003] Powder coating is a new type of solvent-free 100% solid powder environment-friendly coating. It has the advantages of high coating efficiency, good protection and decorative performance, and has received extensive attention from all over the world. Especially in aluminum building materials, it can significantly Improve the water resistance and air pollution degree of the coating, and have excellent wear resistance, acid resistance and other properties. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/10B05D3/02C23C22/24C23C22/76
CPCB05D7/14B05D3/0272B05D3/102B05D2202/25B05D2301/00B05D2320/00B05D2504/00B05D2508/00C23C22/24C23C22/76B05D2401/32
Inventor 朱文吉
Owner TAICANG JIDA SPRAY COATING CO LTD
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