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A kind of preparation method of water-based low solar absorption ratio antistatic coating

A solar absorption ratio and anti-static technology, applied in coatings, conductive coatings, etc., can solve the problems of low solar absorption ratio and poor thermal control performance, and achieve low solar absorption ratio, low powder resistance, and excellent antistatic performance Effect

Active Publication Date: 2016-08-24
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a method for preparing a water-based low solar absorption ratio antistatic coating. The water-based antistatic coating prepared by the method can replace the solvent-based coating and improve the environmental protection of the product. At the same time, it overcomes the problem of poor thermal control performance of traditional antistatic coatings. The prepared coating has high infrared emissivity and low solar absorption ratio, and has excellent antistatic, salt spray resistance, heat and humidity resistance and aging resistance.

Method used

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  • A kind of preparation method of water-based low solar absorption ratio antistatic coating
  • A kind of preparation method of water-based low solar absorption ratio antistatic coating
  • A kind of preparation method of water-based low solar absorption ratio antistatic coating

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preparation example Construction

[0030] The preparation method of the water-based low solar absorption ratio antistatic coating of the present invention comprises the following steps:

[0031] Step (1), adding deionized water, neutralizer, thickener, wetting and dispersing agent, surfactant, defoamer, antibacterial agent and pigment in the paint mixing tank, is mixed with pigment paste, and with 2000 -3000r / min high-speed stirring for 20-30min to disperse evenly, the ratio of each component in parts by mass is as follows:

[0032] 15-30 parts of deionized water, 0.1-0.8 parts of neutralizer, 0.2-2 parts of thickener

[0033] Wetting and dispersing agent 0.5-3 parts Surfactant 0.1-1 part Defoamer 0.1-2 parts

[0034] 0.1-0.5 parts of antibacterial agent, 1-10 parts of pigment;

[0035] The pigment added therein is a white pigment, and the preferred particle size of the present invention is titanium dioxide with a particle size of 0.1-10 μm, which has the characteristics of strong hiding power and good disper...

Embodiment 1

[0047] This embodiment includes the following steps:

[0048] (1) Add 240g of deionized water, 2.0g of neutralizer (50% DMEA aqueous solution), 2.4g of thickener (hydroxyethyl cellulose), and 9.0g of wetting and dispersing agent (BYK-190) into the paint mixing tank , surfactant (BYK-348) 1.0g, defoamer (BYK-022) 1.5g, antibacterial agent (Kathon LXE) 1.0g, add additives while stirring, after stirring evenly, add rutile titanium dioxide 40g ( particle size 0.3-2μm), stirred at 3000r / min for 25min, and set aside.

[0049] (2) Add 450g of water-based hydroxyacrylic acid dispersion to the pigment slurry obtained in (1), stir well, then add 300g of conductive zinc oxide (particle size is 0.5-5μm), and then add defoamer (BYK-022) 3.0 g, rheology modifier (BYK-381) 6.0g, using shear dispersion equipment, 2000r / min dispersion 20min, to prepare water-based coating components.

[0050] (3) Pour the coating components in step (2) into a jar, add 120 g of HDI trimer, stir evenly, and se...

Embodiment 2

[0056] This embodiment includes the following steps:

[0057] (1) Add 240g of deionized water, 2.0g of neutralizer (50% DMEA aqueous solution), 2.0g of thickener (hydroxyethyl cellulose), and 8.0g of wetting and dispersing agent (BYK-190) into the paint mixing tank , surfactant (BYK-348) 1.0g, defoamer (BYK-022) 1.6g, antibacterial agent (Kathon LXE) 1.2g, add additives while stirring, after stirring evenly, add rutile titanium dioxide 40g ( particle size 0.3-2μm), stirred at 2500r / min for 25min, and set aside.

[0058] (2) Add 420g of water-based hydroxyacrylic acid dispersion to the pigment slurry obtained in (1), stir well, then add 260g of conductive potassium titanate (particle size is 5-10μm), and then add defoamer (BYK-022) 3.0g, rheology modifier (BYK-381) 6.0g, apply shear dispersion equipment, 2000r / min disperse for 20min, and prepare water-based coating components.

[0059] (3) Pour the coating components in step (2) into a jar, add 100 g of HDI biuret, stir evenl...

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Abstract

The invention relates to a method for preparing a water-based low solar absorption ratio antistatic coating, the method comprising: (1) 15-30 parts of deionized water, 0.1-0.8 parts of a neutralizing agent, 0.2-2 parts of a thickener, 0.5 ‑3 parts of wetting and dispersing agent, 0.1‑1 part of surfactant, 0.1‑2 part of defoamer, 0.1‑0.5 part of antibacterial agent and 1‑10 part of pigment are prepared into a pigment slurry, and stirred at 2000‑3000r / min for 20 ‑30min to uniform dispersion; (2), 30‑50 parts of water-based hydroxyl resin, 25‑50 parts of conductive filler, 0.1‑1 part of defoamer and 0.2‑1.5 parts of rheology modifier are added to the pigment slurry and stirred evenly; ( 3), the mill base is carried out high-speed dispersion 20-40min, and the dispersion speed is 1500-2500r / min; (4), add 10-20 mass parts of aliphatic isocyanate or alicyclic isocyanate in the mill base; (5), carry out Multiple spraying, the thickness of each spraying is 10-25 μm, and the total thickness of the control coating is 80-150 μm; this method improves the environmental performance of the product, and the prepared coating has high infrared emissivity and low solar absorption ratio, and It has excellent antistatic, salt spray resistance, heat and humidity resistance and aging resistance.

Description

technical field [0001] The invention relates to a preparation method of a water-based low solar absorption ratio antistatic coating and a low solar absorption ratio antistatic coating formed by the coating, belonging to the technical field of functional coatings. Background technique [0002] With the advancement of science and technology and economic development, people's awareness of environmental protection is increasing day by day, environmental protection laws and regulations are becoming more and more perfect, saving money and energy, and protecting the environment have become the main problems faced by the global coatings industry. Emissions of volatile organic compounds (VOC), such as EU Directive.99 / 13 / CE regulation, US CAAA (Clean Air Act Amendment, 1990), my country has also introduced a series of regulations to limit the emission of harmful substances in paint. Compared with traditional solvent-based coatings, water-based coatings use water as the dispersion mediu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D5/24C09D7/12
Inventor 尹雨晨刘剑锋郭家胜雷辉曾一兵卢鹉李颖罗正平
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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