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Super-weather-resistant coating composition for decorative aluminum veneer and preparation method of super-weather-resistant coating composition

A super-weather-resistant, composite technology, applied in the direction of polyester coatings, anti-corrosion coatings, coatings, etc., can solve the problems of damage, high energy consumption, high price, etc., and achieve the effects of increasing reaction rate, simple preparation process, and low production cost

Pending Publication Date: 2022-07-22
上海一田涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aluminum alloy plate is the most commonly used curtain wall metal plate. At present, the most conventional solution is to coat PVDF coating on the aluminum profile, but the existing PVDF coating will lose gloss, change color, powder and fall off after long-term outdoor use. , leading to the exposed curtain wall base material, when the curtain wall base material is in contact with the corrosive medium in the environment, it will be rusted due to chemical or electrochemical reactions, and its performance will be degraded or even destroyed.
In addition, acid rain, various dust and dirt in the atmospheric environment are easy to adhere to the surface of the aluminum profile, and it is easy to form mottling on the surface of the PVDF coating of the aluminum profile, which seriously affects the view of the metal plate of the curtain wall.
In addition, with the adjustment of the national energy strategy, energy conservation and emission reduction have become a development trend, but the existing PVDF coatings have many problems such as high price, high energy consumption (requires above 230°C to cure), and limited production capacity.

Method used

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  • Super-weather-resistant coating composition for decorative aluminum veneer and preparation method of super-weather-resistant coating composition
  • Super-weather-resistant coating composition for decorative aluminum veneer and preparation method of super-weather-resistant coating composition
  • Super-weather-resistant coating composition for decorative aluminum veneer and preparation method of super-weather-resistant coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of embodiment 1 super weather-resistant coating composition A

[0028] (1) At room temperature, put 35 parts of high molecular weight polymer resin ES-750 into the bucket (add in two times), add 0.3 part of dispersant BYK-163 while stirring at 300-400 rotation speed on the upper disc disperser, then Disperse for 10 to 15 minutes, then add 28 parts of rutile titanium dioxide CR826 while stirring, disperse at 800 to 1200 revolutions for 20 to 30 minutes, take out the material and wait for the temperature to cool to room temperature, then grind it on a sand mill, and control the temperature of the outlet during the grinding process It cannot exceed 45°, the sand mill must have a cooling system, and the fineness of the material to be ground is less than or equal to 10um to be qualified;

[0029] (2) At room temperature, put 35 parts of high molecular weight polymer resin ES-750 into the barrel, put 12 parts of amino resin 303LF into the upper disc disperser ...

Embodiment 2

[0031] The preparation of embodiment 2 super weather-resistant coating composition B

[0032] (1) At room temperature, put 35 parts of high molecular weight polymer resin ES-750 into the bucket (add in two times), add 0.3 parts of dispersant BYK-1630 while stirring at 300-400 rotation speed on the upper disc disperser, and then disperse For 10 to 15 minutes, add 28 parts of rutile titanium dioxide CR826 while stirring, disperse at 800 to 1200 revolutions for 20 to 30 minutes, take out the material and wait for the temperature to cool to room temperature and then grind it on a sand mill. If it exceeds 45°, the sand mill must have a cooling system, and the fineness of the material to be ground is less than or equal to 10um.

[0033] (2) At room temperature, put 35 parts of high molecular weight polymer resin ES-750 into the barrel, put 12 parts of amino resin 303LF into the upper disc disperser at 300-400 rotation speed while stirring and disperse for 10-20 minutes, and then gri...

Embodiment 3

[0035] The preparation of embodiment 3 super weather-resistant coating composition C

[0036](1) At room temperature, put 37 parts of high molecular weight polymer resin ES-750 into the bucket (add in two times), add 0.3 part of dispersant BYK-163 while stirring at 300-400 rotation speed on the upper disc disperser, then Disperse for 10 to 15 minutes, then add 28 parts of rutile titanium dioxide CR826 while stirring, disperse at 800 to 1200 revolutions for 20 to 30 minutes, take out the material and wait for the temperature to cool to room temperature, then grind it on a sand mill, and control the temperature of the outlet during the grinding process It cannot exceed 45°, the sand mill must have a cooling system, and the fineness of the material to be ground is less than or equal to 10um to be qualified;

[0037] (2) At room temperature, put 30 parts of high molecular weight polymer resin ES-750 into the barrel, put in 3 parts of Bayer BL3175, a sealing curing agent, and 10 pa...

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Abstract

The invention belongs to the technical field of coatings, and relates to a super-weather-resistant coating composition for a decorative aluminum veneer and a preparation method of the super-weather-resistant coating composition. The coating composition is prepared from the following components in parts by weight: 50 to 70 parts of high molecular weight polymer resin, 9 to 15 parts of matched cross-linking agent, 0.5 to 1 part of closed acid catalyst, 0.2 to 0.5 part of dispersing agent, 0.2 to 0.4 part of flatting agent, 25 to 35 parts of rutile type titanium dioxide, 1 to 2 parts of ultraviolet light absorber, 2 to 4 parts of light stabilizer, 1 to 2 parts of antioxidant, 1 to 2 parts of anti-pollution additive and 12 to 20 parts of solvent, wherein the matched cross-linking agent is composed of 3-7 parts of a sealing curing agent and 8-12 parts of amino resin. Through formula optimization and process adjustment, the prepared coating composition has the properties of low energy consumption, excellent coating effect, high corrosion resistance, high aging resistance and the like, and the preparation process is simple, low in production cost and capable of being produced and applied on a large scale.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a super-weather-resistant coating composition for decorative aluminum veneers, a preparation method thereof, and decorative aluminum veneers. Background technique [0002] The metal panel curtain wall is composed of metal curtain wall panels and a supporting structure system. It does not share the effect of the main structure of the building and can have a certain displacement capacity. The coatings for metal curtain wall panels mainly include polyester coatings, polyethylene coatings, acrylic coatings, fluorocarbon coatings and powder coatings of different resins. With the improvement of living standards, the requirements for decorative materials are getting higher and higher, especially for the exterior wall decoration of airports, high-speed rail stations, and high-end residential quarters, which not only require beautiful appearance, but also put forward high requirements fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/08C09D7/61C09D7/63C09D7/65C09D7/48
CPCC09D167/00C09D5/08C09D7/61C09D7/63C09D7/65C09D7/48C08L2201/08C08K2003/2241C08L61/20C08K3/22C08K5/0025C08K5/005
Inventor 杨军
Owner 上海一田涂料有限公司
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