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Novel self-cleaning plastic-coated steel pipe

A plastic-coated steel pipe, self-cleaning technology, applied in the direction of coating, pipe, rigid pipe, etc., can solve the problems of poor anti-corrosion performance of inner surface, reduce impact resistance of plastic steel pipe, rough inner surface, etc., and achieve good cleaning performance, Improved impact resistance and small roughness factor

Inactive Publication Date: 2020-09-22
江苏瑞腾涂装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because seawater, warm water, oil, gas and other media contain a lot of impurities, long-term transportation will accumulate scale on the inner surface of plastic-coated steel pipes, which is difficult to remove, reduces the impact resistance of plastic steel pipes, and affects the use of plastic-coated steel pipes; in addition, on the market The existing plastic-coated steel pipes have poor anti-corrosion performance on the inner surface, especially the plastic-coated steel pipes used in the water conservancy field. Thus affecting the actual use effect of plastic-coated steel pipes

Method used

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  • Novel self-cleaning plastic-coated steel pipe

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Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the novel self-cleaning plastic-coated steel pipe includes a steel pipe 1, and the inner wall of the steel pipe 1 is coated with a polyurethane / silicon-modified acrylic resin powder coating layer 2; the polyurethane / silicon-modified acrylic resin powder coating layer 2 is as follows Preparation method: Add 80 parts of hydroxyl polyester, 40 parts of silicon-modified hydroxyl acrylic resin, 10 parts of curing agent blocked polyisocyanate, and 10 parts of leveling agent into a high-speed mixer to make them evenly mixed, and then add the mixture into a twin-screw extruder Melting, tableting, crushing, grinding, and grading to obtain powder coatings, wherein the operating temperature of the twin-screw extruder is 125 ° C, and then the powder coatings are sprayed on the After the inner wall of the steel pipe 1 is formed, the steel pipe is baked in an oven at 200° C. for 15 minutes to solidify.

Embodiment 2

[0029] Such as figure 1 As shown, the novel self-cleaning plastic-coated steel pipe includes a steel pipe 1, and the inner wall of the steel pipe 1 is coated with a polyurethane / silicon-modified acrylic resin powder coating layer 2; the polyurethane / silicon-modified acrylic resin powder coating layer 2 is as follows Preparation method: Add 80 parts of hydroxyl polyester, 45 parts of silicon-modified hydroxyl acrylic resin, 20 parts of curing agent blocked polyisocyanate, and 10 parts of leveling agent into a high-speed mixer to make them evenly mixed, and then add the mixture into a twin-screw extruder Melting, tableting, crushing, grinding, and grading to obtain powder coatings, wherein the operating temperature of the twin-screw extruder is 125 ° C, and then the powder coatings are sprayed on the After the inner wall of the steel pipe 1 is formed, the steel pipe is baked in an oven at 200° C. for 15 minutes to solidify.

Embodiment 3

[0031] Such as figure 1 As shown, the novel self-cleaning plastic-coated steel pipe includes a steel pipe 1, and the inner wall of the steel pipe 1 is coated with a polyurethane / silicon-modified acrylic resin powder coating layer 2; the polyurethane / silicon-modified acrylic resin powder coating layer 2 is as follows Preparation method: Add 90 parts of hydroxyl polyester, 45 parts of silicon-modified hydroxyl acrylic resin, 40 parts of curing agent blocked polyisocyanate, and 15 parts of leveling agent into a high-speed mixer to make them evenly mixed, and then add the mixture into a twin-screw extruder Melting, tableting, crushing, grinding, and grading to obtain powder coatings, wherein the operating temperature of the twin-screw extruder is 125 ° C, and then the powder coatings are sprayed on the After the inner wall of the steel pipe 1 is formed, the steel pipe is baked in an oven at 200° C. for 15 minutes to solidify.

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Abstract

The invention relates to the technical field of pipes, in particular to a novel self-cleaning plastic-coated steel pipe and a preparation method thereof. The novel self-cleaning plastic-coated steel pipe comprises a steel pipe, and the inner wall of the steel pipe is coated with a polyurethane / silicon modified acrylic resin powder coating layer; the polyurethane / silicon modified acrylic resin powder coating layer is composed of hydroxyl polyester, silicon modified hydroxyl acrylic resin, curing agent blocked polyisocyanate and a leveling agent. The steel pipe has the characteristics of hydrophobic and oleophobic properties, capability of avoiding scale deposition on the inner surface of the plastic steel pipe, small roughness coefficient, improvement of the impact resistance of the pipe and good actual use effect.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to a novel self-cleaning plastic-coated steel pipe and a preparation method thereof. Background technique [0002] Plastic-coated steel pipes, also known as plastic-coated pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, use steel pipes as the substrate, and weld a layer of plastic anti-corrosion layer on the inner surface of the steel pipe through spraying, rolling, dipping, and suction processes. Steel-plastic composite steel pipe with plastic anti-corrosion layer. Plastic-coated steel pipes are suitable for the transportation of water supply and drainage, sea water, warm water, oil, gas and other media. [0003] Because seawater, warm water, oil, gas and other media contain a lot of impurities, long-term transportation will accumulate scale on the inner surface of plastic-coated steel pipes, which is difficult to remove, reduces the impact resistance...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D5/03C09D5/16C08G18/68C08G18/64F16L9/147B05D7/22B05D7/24
CPCB05D7/225B05D7/24C08G18/6469C08G18/68C09D5/03C09D5/1662C09D175/14F16L9/147
Inventor 余忠琪
Owner 江苏瑞腾涂装科技有限公司