Preparation method for aqueous low-solar-absorptance 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, achieve low solar absorption ratio, low powder resistance, and improve appearance

Active Publication Date: 2014-10-08
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Description
  • Claims
  • Application Information

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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 environmenta

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  • Preparation method for aqueous low-solar-absorptance antistatic coating
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  • Preparation method for aqueous low-solar-absorptance 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 dispersib...

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 (KathonLXE) 1.0g, add additives while stirring, after stirring evenly, add rutile titanium dioxide 40g (grain 0.3-2μm in diameter), 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 ...

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 (KathonLXE) 1.2g, add additives while stirring, after stirring evenly, add rutile type titanium dioxide 40g (grain 0.3-2μm in diameter), 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, sti...

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Abstract

The invention relates to a preparation method for a aqueous low-solar-absorptance antistatic coating. The method comprises: (1) preparing a pigment slurry from 15-30 parts of deionized water, 0.1-0.8 part of a neutralizer, 0.2-2 parts of a thickening agent, 0.5-3 parts of a wetting dispersant, 0.1-1 part of a surfactant, 0.1-2 parts of an antifoaming agent, 0.1-0.5 part of an antiseptic and 1-10 parts of a pigment, stirring at a speed of 2000-3000 r/min for 20-30 min to uniformly disperse; (2) adding 30-50 parts of aqueous hydroxyl resin, 25-50 parts of a conductive filling material, 0.1-1 part of an antifoaming agent and 0.2-1.5 parts of a rheological modifier into the pigment slurry and stirring uniformly; (3) performing high-speed dispsersion on the paint slurry for 20-40 min, and controlling the dispersion speed to be 1500-2500 r/min; (4) adding 10-20 parts by mass of aliphatic isocyanate or alicyclic isocyanate; and (5) performing multiple times of spraying, controlling the spraying thickness at every spraying time to be 10-25 mu m and controlling the total thickness of the coating to be 80-150 mu m. The method helps to improve the environment protection performance of the product. The prepared coating has high infrared emissing ability and low solar absorptance, and also possesses excellent antistatic performance, salt-spray resistance, damp heat resistance and ageing 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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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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