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Water-based fluorocarbon metal paint with high weather resistance and low voc and preparation method thereof

A water-based fluorocarbon and metallic paint technology, applied in the field of architectural decoration coatings, can solve the problems of low VOC weather resistance, low manufacturing cost, weak weather resistance, etc., and achieve improved water resistance, low manufacturing cost, and flexible construction methods. Effect

Active Publication Date: 2017-10-27
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of water-based fluorocarbon metallic paint with high weather resistance and low VOC and its preparation method, to overcome the shortcomings of existing products such as VOC exceeding the limit value of the new standard HJ2537-2014, and weak weather resistance. Low VOC and super weather resistance, and the metal paint can reach the technical index of super fluorescent ultraviolet accelerated aging of more than 1000h, and can be applied to large-area coating of exterior walls; the preparation method is simple and fast, and the manufacturing cost is low

Method used

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  • Water-based fluorocarbon metal paint with high weather resistance and low voc and preparation method thereof
  • Water-based fluorocarbon metal paint with high weather resistance and low voc and preparation method thereof
  • Water-based fluorocarbon metal paint with high weather resistance and low voc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] A water-based fluorocarbon metal paint with high weather resistance and low VOC is characterized in that: the paint is prepared from the following components according to the following proportions by weight:

[0033]

[0034]

[0035] The dispersant is one of ammonium salt dispersant or sodium salt dispersant or any mixture thereof.

[0036] The wetting agent is an anionic surfactant or a nonionic surfactant.

[0037] The defoamer is one or more of mineral oil defoamers, polyether modified defoamers or modified silicone defoamers in random mixture.

[0038] The solid content of the water-based fluorocarbon emulsion is 48-52%, and the fluorine content is 10-12%.

[0039] The thickener is one or more of polyurethanes, hydrophobically modified alkali-swellable thickeners or hydrophobically modified nonionic associative thickeners in random mixture.

[0040] The solid content of the water-based aluminum-silver paste is 50-55%, and the fineness of the aluminum powder...

Embodiment approach 2

[0042] A method for preparing high weather resistance and low VOC water-based fluorocarbon metal paint, characterized in that: the preparation method of the paint comprises the following steps in sequence:

[0043] 1) Add 20-25 parts of water, 0.1-0.4 parts of bactericide, 0.1-0.4 parts of anti-fungal agent, 0.2-0.8 parts of dispersant, 0.05-0.35 parts of wetting agent, 0.1-0.6 parts of defoamer, 0.1-0.35 parts of PH regulator and 0.1-0.6 parts of ultraviolet absorber, dispersed at this speed for 2-5 minutes;

[0044] 2) Adjust the rotation speed to 500-800 rpm, then add 7-15 parts of water-based aluminum silver paste at this rotation speed, and disperse at this rotation speed for 10-20 minutes until the silver powder is evenly dispersed;

[0045] 3) Then add 40-55 parts of water-based fluorocarbon emulsion at a speed of 500-800 rpm, and disperse for 3-5 minutes at this speed;

[0046] 4) Adjust the rotation speed to 700-1000 rpm, add 2-4.5 parts of film-forming aids, 0.4-1 p...

Embodiment 1

[0049] A water-based fluorocarbon metal paint with high weather resistance and low VOC is characterized in that: the paint is prepared from the following components according to the following proportions by weight:

[0050]

[0051] A method for preparing high weather resistance and low VOC water-based fluorocarbon metal paint, characterized in that: the preparation method of the paint comprises the following steps in sequence:

[0052] 1) Add 25 parts of water, 0.1 part of bactericide, 0.3 part of antifungal agent, 0.2 part of dispersant, 0.05 part of wetting agent, 0.1 part of defoamer, 0.35 part of PH regulator and 0.1 part of UV absorber, dispersed at this speed for 5 minutes;

[0053] 2) Adjust the rotation speed to 600 rpm, then add 7 parts of water-based aluminum silver paste at this rotation speed, and disperse at this rotation speed for 15 minutes until the silver powder is evenly dispersed;

[0054] 3) Then add 40 parts of water-based fluorocarbon emulsion at a s...

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Abstract

The invention relates to a water-based fluorocarbon metal paint with high weather resistance and low VOC and a preparation method thereof. The paint is prepared from the following components according to the following proportions by weight: 20.6-45.1 parts of water, 0.1-0.4 parts of fungicide, anti-fungal 0.1-0.4 parts of mold agent, 0.2-0.8 parts of dispersant, 0.05-0.35 parts of wetting agent, 0.1-0.6 parts of defoamer, 0.1-0.35 parts of pH regulator, 0.1-0.6 parts of ultraviolet absorber, water-based aluminum silver paste 7‑15 parts, 40‑55 parts of water-based fluorocarbon emulsion, 2‑4.5 parts of coalescence aid, 0.4‑1 part of antifreeze, 0.2‑0.8 part of antifreeze-thaw surfactant, 0.1‑0.5 part of silicone additive, Thickener 0.5-3 parts. The paint has ultra-low VOC and super weather resistance, and the paint can reach the technical index of super fluorescent ultraviolet accelerated aging of 1000h; the preparation method is simple and quick, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the field of coatings for architectural decoration, in particular to a water-based fluorocarbon metal paint with high weather resistance and low VOC and a preparation method thereof. Background technique [0002] Solvent-based fluorocarbon metal coating for imitation aluminum-plastic panels has the advantages of good weather resistance, realistic gusset effect, and convenient construction. It is more and more used by high-end decoration projects on building exterior walls; but it also has VOC up to 350g / L Above, the coating film has poor air permeability, and the coating is easy to peel and peel off. [0003] With the gradual improvement of people's awareness of environmental protection, the laws and regulations limiting the emission of volatile organic compounds (VOC) in coatings are becoming more and more perfect and strict. Therefore, it has become the general trend for high-performance water-based coating products to gradu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/12C09D7/12C09D5/14C09D5/10
Inventor 洪杰张仁波陆燕凤李祥文赖李芳钟国柱
Owner SKSHU PAINT
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