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High-performance polyester resin powder coating and preparation method thereof

A polyester resin and powder coating technology, applied in powder coatings, polyester coatings, coatings, etc., can solve problems such as poor bending resistance, weak bonding force of substrates, and unsmooth appearance of coatings

Inactive Publication Date: 2018-04-06
GUILIN HEXIN WATERPROOF DECORATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the appearance of the existing powder coating coating is not smooth enough, the bonding force with the substrate is weak, and the bending resistance is poor.

Method used

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  • High-performance polyester resin powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First, weigh the following components by weight: 35 parts of polyester resin, 10 parts of triglycidyl isocyanurate, 20 parts of rutile titanium dioxide, 10 parts of barium sulfate, 15 parts of calcium carbonate, 5 parts of leveling agent Parts, 5 parts of 1.0% silane coupling agent.

[0015] Then, prepare the coating: weigh each component in proportion, place it in a mixer, crush and mix it for 5-8 minutes, and then place it in a twin-screw extruder with a feeding speed of 1000r / min and a main screw speed of 2500r / min Melt extrusion, while controlling the temperature of the first zone to 90°C and the temperature of the second zone to 100°C, the melted raw materials are placed in a cooling tablet press with a conveyor belt and a tablet press with a speed of 1000r / min, and finally placed in a main mill with a grinding speed of 5000r / min, auxiliary grinding speed 2600r / min grinding system, the grinding particle size of 33 ~ 37um polyester resin powder coating.

Embodiment 2

[0017] First, weigh the following components by weight: 37 parts of polyester resin, 12 parts of triglycidyl isocyanurate, 18 parts of rutile titanium dioxide, 13 parts of barium sulfate, 13 parts of calcium carbonate, and 4 parts of leveling agent Parts, 3 parts of 1.0% silane coupling agent.

[0018] Then, prepare the coating: weigh each component in proportion, place it in a mixer, crush and mix it for 5-8 minutes, and then place it in a twin-screw extruder with a feeding speed of 1000r / min and a main screw speed of 2500r / min Melt extrusion, while controlling the temperature of the first zone to 90°C and the temperature of the second zone to 100°C, the melted raw materials are placed in a cooling tablet press with a conveyor belt and a tablet press with a speed of 1000r / min, and finally placed in a main mill with a grinding speed of 5000r / min, auxiliary grinding speed 2600r / min grinding system, the grinding particle size of 33 ~ 37um polyester resin powder coating.

Embodiment 3

[0020] First, weigh the following components by weight: 40 parts of polyester resin, 15 parts of triglycidyl isocyanurate, 15 parts of rutile titanium dioxide, 15 parts of barium sulfate, 10 parts of calcium carbonate, and 3 parts of leveling agent Parts, 2 parts of 1.0% silane coupling agent.

[0021] Then, prepare the coating: weigh each component in proportion, place it in a mixer, crush and mix it for 5-8 minutes, and then place it in a twin-screw extruder with a feeding speed of 1000r / min and a main screw speed of 2500r / min Melt extrusion, while controlling the temperature of the first zone to 90°C and the temperature of the second zone to 100°C, the melted raw materials are placed in a cooling tablet press with a conveyor belt and a tablet press with a speed of 1000r / min, and finally placed in a main mill with a grinding speed of 5000r / min, auxiliary grinding speed 2600r / min grinding system, the grinding particle size of 33 ~ 37um polyester resin powder coating.

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Abstract

The invention provides a high-performance polyester resin powder coating. The coating is prepared from, by weight, 35-45 parts of polyester resin, 10-20 parts of triglycidyl isocyanurate, 10-20 partsof rutile type titanium dioxide, 10-20 parts of barium sulfate, 5-15 parts of calcium carbonate, 1-5 parts of flow smoothing agent and 1-5 parts of 1.0% silane coupling agent. According to the high-performance polyester resin powder coating, the polyester resin is used as a raw material basis, auxiliary materials such as curing agent, pigments, padding and addition agent are added, the polyester resin powder coating is prepared through scientific and reasonable matching. The invention further provides a preparation method of the powder coating. The method is simple and easy to implement, the prepared powder coating is smooth and flat in appearance, high in binding force with basic materials, resistant to impact, resistant to scratch, good in anti-bending performance and excellent in weather resistance, and the high-performance powder coating meets multi-aspect requirements of the market.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a high-performance polyester resin powder coating and a preparation method thereof. Background technique [0002] Powder coatings are made of specific chemical substances, after specific preparation processes such as physical or mechanical treatment, made into uniformly fine particle powder, and coated in powder form. It is different from general solvent-based coatings and water-based coatings. It does not use solvent or water as the dispersion medium, but uses air as the dispersion medium. It is a new type of solvent-free 100% solid powder coating, which has the advantages of saving energy, resources and environment. The characteristics of small pollution impact, simple process, easy automatic coating, durable coating, recyclable powder, reduced labor intensity and high mechanical strength of the coating film are increasingly widely used in industrial production. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/03C09D7/61C09D7/63
CPCC09D167/00C08K5/34924C08K2003/2241C08K2003/265C08K2003/3045C09D5/033
Inventor 黄志强
Owner GUILIN HEXIN WATERPROOF DECORATION MATERIAL
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