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Weather-resistant anticorrosive powder coating and preparation method thereof

A powder coating and weather-resistant technology, applied in the field of coatings, can solve the problems of poor environmental tolerance of coatings, incomplete coating curing, and reduced corrosion resistance, so as to enhance corrosion resistance, promote spatial structure extension, and improve compactness sexual effect

Pending Publication Date: 2021-03-02
宁波爱甬新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance of the coating film of thermoplastic powder coating is poor, and the adhesion to metal is also poor, so it is less used in the field of coating
[0003] In order to facilitate the use of powder and improve the adhesion between the coating and the substrate, there are many improvements to the coating in the current technology, such as a special powder coating for hot rolling coating of steel pipes without post-curing with the patent number CN201810504582.5, which uses composite epoxy Resin, composite curing agent, pigments, additives, and fillers solve the problems of coating blistering caused by hot rolling coating of steel pipes, scorching of the contact surface between the coating and steel pipes, etc., and overcome the incomplete curing of the coating caused by no post-curing of steel pipes Difficult; however, due to the high epoxy resin content, the coating has poor performance in terms of environmental resistance
Another example is a thermal transfer powder coating for aluminum floor with the patent number CN201810139284.0, its preparation method and its application. A mixture of carboxyl-terminated polyester and hydroxyl-terminated polyester is used as a film-forming substance, and it is mixed with quartz powder, titanium dioxide, Modified polyether leveling agent, polytetrafluoroethylene, nylon copolymer, coupling agent, catalyst, antioxidant and other materials are prepared into powder coatings by melt extrusion, but due to the lack of deep modified fillers, the coatings are in Decreased corrosion resistance effect when used for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0029] A weather-resistant and anti-corrosion powder coating, comprising the following components in parts by mass: 100 parts of polytetrafluoroethylene, 20 parts of solid epoxy resin, 30 parts of modified silicon dioxide, 5 parts of boron trifluoride ethylamine, 0.1 part of modified copper oxide, 3 parts of polystyrene, 5 parts of cellulose acetate, and 30 parts of auxiliary materials; the modified silicon dioxide is composed of nanometer silicon dioxide, N- β-aminoethyl-γ-aminopropylmethyldimethoxysilane, acrylic resin, and cerium nitrate are prepared; the modified copper oxide is composed of nano-copper oxide and carbon powder with a mass ratio of 1:0.01:0.001 , prepared from oxygen; the auxiliary materials include: 0.1 part of dibutyl hydroxytoluene, 1 part of polytetrafluoroethylene micropowder wax, 0.2 part of fluorinated alkyl phosphate, 0.3 part of diacetone alcohol, 0.3 part of triethanolamine, superfine 5 parts of calcium carbonate, 8 parts of superfine silicon carbi...

Embodiment 2

[0044] A weather-resistant and anti-corrosion powder coating, comprising the following components in parts by mass: 120 parts of polytetrafluoroethylene, 30 parts of solid epoxy resin, 50 parts of modified silicon dioxide, 10 parts of boron trifluoride ethylamine, modified 1 part of copper oxide, 5 parts of polystyrene, 8 parts of cellulose acetate, and 35 parts of auxiliary materials; the modified silicon dioxide is composed of nanometer silicon dioxide, N-β -Aminoethyl-γ-aminopropylmethyldimethoxysilane, acrylic resin, and cerium nitrate are prepared; the modified copper oxide is composed of nano-copper oxide, carbon powder, carbon powder, and Prepared from oxygen; the auxiliary materials include: 1 part of dibutyl hydroxytoluene, 3 parts of polytetrafluoroethylene micropowder wax, 0.5 part of fluorinated alkyl phosphate, 0.7 part of diacetone alcohol, 0.5 part of triethanolamine, superfine carbonic acid Calcium 15 parts, superfine silicon carbide 12 parts, pigment 25 parts....

Embodiment 3

[0059] A weather-resistant and anti-corrosion powder coating, comprising the following components in parts by mass: 110 parts of polytetrafluoroethylene, 27 parts of solid epoxy resin, 44 parts of modified silicon dioxide, 6 parts of boron trifluoride ethylamine, modified 0.6 parts of copper oxide, 5 parts of polystyrene, 5 parts of cellulose acetate, and 35 parts of auxiliary materials; the modified silicon dioxide is composed of nanometer silicon dioxide, N-β -Aminoethyl-γ-aminopropylmethyldimethoxysilane, acrylic resin, and cerium nitrate are prepared; the modified copper oxide is composed of nano-copper oxide, carbon powder, carbon powder, and Oxygen is produced. In parts by mass, the auxiliary materials include: 1 part of dibutyl hydroxytoluene, 1 part of polytetrafluoroethylene micronized wax, 0.5 part of fluorinated alkyl phosphate, 0.3 part of diacetone alcohol, 0.5 part of triethanolamine, superfine carbonic acid Calcium 15 parts, superfine silicon carbide 10 parts, ...

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Abstract

The invention relates to the technical field of coatings, in particular to a weather-resistant anticorrosive powder coating and a preparation method thereof. The coating is prepared from polytetrafluoroethylene, solid epoxy resin, modified silicon dioxide, boron trifluoride ethylamine, modified copper oxide, polystyrene, cellulose acetate and auxiliary materials. Amino is introduced to the surfaceof nano silicon dioxide and matched with acrylic resin to form CuO-Cu2O heterojunctions and Cu-CuO / Cu2O Schottky heterojunctions, in cooperation with all the components, the prepared coating has a good isolation effect on acid, alkali and salt, the corrosion resistance of the coating is remarkably enhanced, meanwhile, the combination of molecular chemical bonds of the coating is improved, the mechanical property of the coating is improved, and the wear resistance and the impact resistance of the coating are enhanced.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a weather-resistant and anti-corrosion powder coating and a preparation method thereof. Background technique [0002] Powder coating is a solid powder synthetic resin coating composed of solid resin and pigments, fillers and additives. Unlike ordinary solvent-based paints and water-based paints, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation, and low energy consumption. There are two types of powder coatings, thermoplastic and thermosetting. The appearance of the coating film of thermoplastic powder coating is poor, and the adhesion to metal is also poor, so it is less used in the field of coating. [0003] In order to facilitate the use of powder and improve the adhesion between the coating and the substrate, there are many improvements to the coating in the current technology, such as a specia...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D163/00C09D5/03C09D7/62C09D7/63C09D5/08
CPCC09D127/18C09D5/033C09D5/08C08L2205/035C08K2201/011C08K2003/2248C08K2003/265C08L63/00C08L25/06C08L1/12C08K13/06C08K9/06C08K9/02C08K9/08C08K3/36C08K3/22C08K3/26C08K3/34
Inventor 李红
Owner 宁波爱甬新材料科技有限公司
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