Polyetherketoneketone-reinforced high temperature-resistant and anticorrosive fluororesin coating

A polyetherketone ketone and anti-corrosion coating technology, applied in the polymer field, can solve the problems of poor coating adhesion, coating peeling, etc., and achieve strong adhesion, good heat resistance, and improved application range and service life. Effect

Active Publication Date: 2019-04-19
SHANDONG KAISHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional coating method, tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA) is coated on the metal surface, because the fluorine material itself is not sticky, resulting in poor coating adhesion
The traditional fluororesin primer has a certain binding force to the coating, but the bonding is only limited to physical bonding. In high temperature or high vacuum conditions, problems such as coating peeling will occur.

Method used

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  • Polyetherketoneketone-reinforced high temperature-resistant and anticorrosive fluororesin coating
  • Polyetherketoneketone-reinforced high temperature-resistant and anticorrosive fluororesin coating
  • Polyetherketoneketone-reinforced high temperature-resistant and anticorrosive fluororesin coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 40g of surfactant APEO and 578g of N-methylpyrrolidone into the mixing tank in turn, set the stirring speed at 1500r / min, and stir for 10min. Ketone powder 120g, PFA resin 220g, carbon black 6g, join in the solution, set the rotating speed as 1500r / min and stir for 50min, after the solution system is dispersed evenly, add 30g hydroxymethyl cellulose ether to the solution system, set the rotating speed as Stir the system at 1000r / min to obtain a uniform and stable primer, filter it with a 150-mesh filter, let it stand still, and use it.

[0032] Weigh 10g of 4,4-diaminodiphenyl ether, 300g of polyetherketoneketone fine powder and 2990g of PFA resin, mix them in a three-dimensional mixer for 30min, take out the materials, and first coat the metal substrate with fluorine containing polyetherketoneketone Resin primer, after the primer is dried, spray the polyether ketone ketone modified PFA resin topcoat on the primer by electrostatic spraying.

Embodiment 2

[0034] Add 40g of surfactant APEO and 578g of N-methylpyrrolidone into the mixing tank in turn, set the stirring speed at 1500r / min and stir for 15min. Add 140g of fine powder, 240g of PFA resin, and 6g of carbon black into the solution, and stir at a low speed for 60 minutes. After the solution system is uniformly dispersed, add 30g of hydroxymethyl cellulose ether to the solution system, and set the rotation speed at 1000r / min to stir the system. Obtain a uniform and stable primer, filter it with a 150-mesh filter, let it stand still, and use it.

[0035] Weigh 10g of 4,4-diaminodiphenyl ether, 300g of polyetherketoneketone fine powder and 2990g of PFA resin, mix them in a three-dimensional mixer for 30min, and take out the materials. First coat the fluorine resin primer containing polyether ketone ketone on the metal substrate. After the primer is dried, spray the polyether ketone ketone modified PFA resin topcoat on the primer by electrostatic spraying.

Embodiment 3

[0037] Add 40g of surfactant APEO and 536g of N-methylpyrrolidone into the mixing tank in turn, set the stirring speed at 1500r / min and stir for 15min. Add 110g of fine powder, 220g of PFA resin, and 6g of carbon black into the solution, set the rotation speed at 1500r / min and stir for 40min. Stir the system to obtain a uniform and stable primer, filter it with a 150-mesh filter, and use it statically.

[0038] Weigh 10g of 4,4-diaminodiphenyl ether, 300g of polyether ketone ketone fine powder and 2990g of PFA resin, mix in a three-dimensional mixer for 30min, take out the materials, and first coat the metal substrate with fluororesin containing polyether ketone ketone Primer, after the primer is dried, spray the polyether ketone ketone modified PFA resin topcoat on the primer by electrostatic spraying.

[0039] The bonding force and anti-corrosion performance of the products of Examples 1-3 at different temperatures were measured and evaluated by the pull-off adhesion test, ...

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Abstract

The invention relates to a polyetherketoneketone-reinforced high temperature-resistant and anticorrosive fluororesin coating, and belongs to the technical field of polymers. The coating comprises a polyetherketoneketone-containing fluororesin primer and a polyetherketoneketone-modified fluororesin finish, and the polyetherketoneketone-containing fluororesin primer comprises, by mass, 10-15% of polyetherketoneketone, 5-10% of polyamideimide, 20-35% of PFA, 0.5-5% of a surfactant, 1-5% of tackifying colloid, 45-60% of an organic solvent and 0.5-1% of a pigment; and the polyetherketone modifiedfluororesin finish comprises fluororesin, polyetherketoneketone and a crosslinker, wherein the polyetherketoneketone accounts for 7-15% of the mass of the fluororesin, and the crosslinker accounts for0.1-0.5% of the mass of the fluororesin. The polyetherketoneketone reinforced fluororesin vacuum-resistant and high temperature-resistant coating has the resistance to vacuum, the high temperature and corrosion.

Description

technical field [0001] The invention relates to a polyether ketone ketone reinforced fluororesin high temperature resistant anti-corrosion coating, which belongs to the technical field of macromolecules. Background technique [0002] Polyether ketone ketone (PEKK), as a high-performance thermoplastic engineering plastic, has excellent heat resistance and excellent mechanical properties. At present, polyether ketone ketone is used as a coating, which has a variety of excellent properties, such as excellent combination with the substrate, good chemical resistance, high temperature resistance, etc., and is very suitable for the application of high temperature resistant and anti-corrosion coatings. In the traditional coating method, tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA) is coated on the metal surface, because the fluorine material itself is not sticky, resulting in poor coating adhesion. The traditional fluororesin primer has a certain binding force to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D161/16C09D179/08C09D5/08C09D7/65C09D7/63C09D5/46
CPCC08L2201/08C08L2205/035C09D5/002C09D5/033C09D5/08C09D5/18C09D7/63C09D7/65C09D127/18C08L61/16C08L79/08C08K5/18
Inventor 王帅坡李光辉孙庆民张泰铭张际亮贾亚非
Owner SHANDONG KAISHENG NEW MATERIALS
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