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A highly weather-resistant architectural exterior coating

A technology with high weather resistance and construction, applied in the direction of coating, polyester coating, etc., can solve the problems of high equipment requirements, complicated process, high cost, etc., and achieve the effect of strong anti-ultraviolet, strong hiding ability, and strong anti-yellowing

Active Publication Date: 2022-03-11
SHANGHAI WEIKAI CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing treatment methods for building metal exterior walls have problems such as high cost, complicated process, and high equipment requirements. Therefore, it is urgent to develop a high-weather-resistant architectural exterior coating with low cost, simple process, and low equipment requirements.

Method used

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  • A highly weather-resistant architectural exterior coating
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  • A highly weather-resistant architectural exterior coating

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A preparation method for component A of a high weather-resistant architectural coating for metal building exterior walls, comprising the following process steps:

[0046] (1) Mix 1% ester dispersant, 2% ethyl acetate, and 5% aliphatic saturated polyester resin, disperse at high speed for 1 hour, then slowly add 2% carbon black, disperse at high speed for 1 hour, and obtain black slurry;

[0047] (2) Mix 4% ester dispersant, 25% ethyl acetate, and 25% aliphatic saturated polyester resin, disperse at high speed for 1 hour, then slowly add 25% rutile titanium dioxide, disperse at high speed for 1 hour, and get white pulp;

[0048] (3) Place the dispersed black slurry and white slurry in a sand mill for grinding for 15 minutes at a speed of 2000r / min;

[0049] (4) Mix the ground color paste, add 2% epoxy silane coupling agent, 0.05% organosiloxane leveling agent, 0.1% salicylate anti-ultraviolet absorber, 0.1% organic bismuth catalyst , supplemented with 8.75% ethyl aceta...

Embodiment 2

[0052] A preparation method for component A of a high weather-resistant architectural coating for metal building exterior walls, comprising the following process steps:

[0053] (1) Mix 0.05% ester dispersant, 3% ethyl acetate, and 3% aromatic saturated polyester resin, disperse at high speed for 1 hour, then slowly add 0.05% carbon black, disperse at high speed for 1 hour, and obtain black slurry;

[0054] (2) Mix 0.45% ester dispersant, 30% ethyl acetate, and 12% aromatic saturated polyester resin, disperse at high speed for 1 hour, then slowly add 15% rutile titanium dioxide, disperse at high speed for 1 hour, and get white pulp;

[0055] (3) Place the dispersed black slurry and white slurry in a sand mill for grinding for 15 minutes at a speed of 2000r / min;

[0056](4) Mix the ground color paste, add 0.1% epoxy silane coupling agent, 0.01% organosiloxane leveling agent, 0.01% hindered amine anti-ultraviolet absorber, 0.01% organic bismuth catalyst, 36.32% ethyl acetate, ...

Embodiment 3

[0059] A preparation method for component A of a high weather-resistant architectural coating for metal building exterior walls, comprising the following process steps:

[0060] (1) Mix 0.5% ester dispersant, 2.5% ethyl acetate, and 3.5% aromatic saturated polyester resin, disperse at high speed for 1 hour, then slowly add 1% carbon black, disperse at high speed for 1 hour, and obtain black pulp;

[0061] (2) Mix 2.5% ester dispersant, 27.5% ethyl acetate, and 16.5% aromatic saturated polyester resin, disperse at high speed for 1 hour, then slowly add 20% anatase titanium dioxide, disperse at high speed for 1 hour, and obtain white paste;

[0062] (3) Place the dispersed black slurry and white slurry in a sand mill for grinding for 15 minutes at a speed of 2000r / min;

[0063] (4) Mix the ground color paste, add 1% methoxysilane coupling agent, 0.03% organosiloxane leveling agent, 0.05% benzophenone anti-ultraviolet absorber, 0.05% organotin catalyst, 24.87% ethyl acetate, af...

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Abstract

The invention discloses a highly weather-resistant architectural exterior coating, which comprises A component and B component, and the A component includes the following raw materials by weight percentage: polyester resin 10% to 30%; silane coupling agent 0.1-2%; catalyst 0.01-0.1%; carbon black 0.05-2%; titanium dioxide 15-25%; dispersant 0.5-5%; leveling agent 0.01-0.05%; 30-70%; the B component is an isocyanate curing agent. The invention has the following beneficial effects: 1. The coating is suitable for metal surfaces (such as aluminum); 2. The coating has good weather resistance, strong adhesion, no pulverization, non-combustibility, water resistance, strong UV resistance, strong Anti-yellowing, strong hiding power.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a highly weather-resistant building exterior coating. Background technique [0002] With the rapid development of the construction industry, aluminum alloy profiles have become an important form of exterior wall and interior enclosure in current buildings, reflecting the new concept of modern architecture. A new type of decorative material made of veneer composites. In the case of the same thickness, the use of aluminum panels for the exterior wall of the building not only retains the decorative aesthetics of natural stone, but also reduces the weight of the material and improves the strength of the material. At present, the common surface treatment methods of aluminum plates include fluorocarbon three-coating, thermal transfer wood grain, pre-roll coating / printing, imitation stone grain, real stone paint, ceramics / porcelain, etc. [0003] In the prior art, the patent CN106634...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D7/61C09D7/63
CPCC09D167/00C09D7/61C09D7/63C09D7/69C08K2201/003C08K2003/2241C08K13/02C08K3/04C08K3/22C08K5/5435
Inventor 虞明东沈敬文王世哲丁万强王建文
Owner SHANGHAI WEIKAI CHEM
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