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Special water-based acrylic acid modified alkyd anticorrosive paint for steel structures and preparation method thereof

A water-based acrylic and anti-corrosion coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of restricting the development of water-based steel structure anti-corrosion coatings, huge hidden dangers for people and the environment, and high requirements for substrate treatment, achieving significant economic benefits, The effect of low construction environment requirements and excellent adhesion

Inactive Publication Date: 2020-04-28
ZHEJIANG TIANNU GROUP PAINT MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, traditional solvent-based coatings contain a large amount of organic solvents, which have many problems in terms of safety and environmental protection. They have huge hidden dangers to people and the environment, and the country’s restrictions on VOC emissions are gradually tightened. Facing the increasingly severe environmental protection situation, coatings The trend of upgrading to environment-friendly, such as water-based, is imperative
[0003] At present, water-based anti-corrosion coatings for steel structures are mainly based on water-based acrylic emulsion coatings. Although these coatings dry quickly, they have poor fullness, whitening of the paint film when exposed to water, poor film formation at low temperatures, and high The disadvantages of easy to rust in wet environment, high requirements for substrate treatment, and high cost severely limit the development of water-based anti-corrosion coatings for steel structures

Method used

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  • Special water-based acrylic acid modified alkyd anticorrosive paint for steel structures and preparation method thereof
  • Special water-based acrylic acid modified alkyd anticorrosive paint for steel structures and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 (water-based acrylic modified alkyd resin)

[0047] In a reactor equipped with a stirrer, a condenser, and a heater, weigh 15 g of linoleic acid, 6 g of soybean oil, 6 g of benzoic acid, 5 g of isophthalic acid, 2 g of maleic anhydride, and neopentyl glycol. 7g, 7g of pentaerythritol, and 0.2g of dihydroxybutyl tin chloride, slowly raise the temperature to 150°C and keep it for 1 hour, raise the temperature to 180°C and keep it for 1 hour, raise the temperature to 210°C and keep it for 1.5 hours, then raise the temperature to 220°C and keep it for 1.5 hours. Finally, add 5g of xylene, heat up to 210°C-220°C to keep warm for esterification, keep warm until the acid value is less than 7mgKOH•g -1 , vacuumize to remove xylene, cool down and add 10g propylene glycol methyl ether and 10g 2-tert-butoxyethanol mixed solvent to dilute. Raise the temperature to 120°C-125°C and add dropwise the first two-thirds of the mixed monomer of 10g styrene and 2.5g methacryli...

Embodiment 2

[0048] Embodiment 2 (waterborne acrylic modified alkyd resin)

[0049] In a reactor equipped with a stirrer, a condenser, and a heater, weigh 18 g of linoleic acid, 3 g of soy acid, 4 g of benzoic acid, 5 g of isophthalic acid, 1.5 g of maleic anhydride, and 5 g of alcohol, 8 g of pentaerythritol, and 0.2 g of dihydroxybutyl tin chloride are slowly raised to 150° C. for 1 hour, 180° C. for 1 hour, 210° C. for 1.5 hours, and then 220° C. for 1.5 hours. Finally, add 5g of xylene, heat up to 210°C-220°C to keep warm for esterification, keep warm until the acid value is less than 7mgKOH•g -1, vacuumize to remove xylene, cool down and add 10g propylene glycol methyl ether and 10g 2-tert-butoxyethanol mixed solvent to dilute. Raise the temperature to 120°C-125°C and add dropwise the first two-thirds of the mixed monomer of 15g styrene and 3g methacrylic acid, and drop evenly within 2 hours, then add dropwise the last third of the above-mentioned mixed monomer Add 1.5g of vinyltrie...

Embodiment 3

[0051] In the dispersing kettle, put 600g of the resin in Example 1, 2g of dispersant, 60g of deionized water, and 5g of organic bentonite powder into the dispersing kettle. After dispersing evenly at high speed, add 100g of titanium dioxide, 5g of carbon black, 50g of precipitated barium sulfate, and 50g of ferric phosphate. Grind and disperse zinc to a fineness of 40µm, add 3g of leveling aid, 3g of defoamer, 6g of anti-flash rust agent, and 4g of thickener and stir evenly, and adjust the viscosity with the remaining 50g of deionized water.

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Abstract

The invention relates to the technical field of coating preparation, in particular to a special anticorrosive coating for a steel structure and a preparation method thereof. The invention relates to aspecial water-based acrylic acid modified alkyd anticorrosive coating for a steel structure. The special water-based acrylic acid modified alkyd anticorrosive coating is prepared from water-based acrylic acid modified alkyd resin, a dispersing agent, deionized water, an anti-settling aid, pigment, filler, an antirust base material, a leveling aid, a defoaming agent, an anti-flash-rust agent and athickening agent. The anticorrosive paint combines the advantages of alkyd resin paint and acrylic resin paint, has excellent drying speed, water resistance, weather resistance and corrosion resistance, can be used for construction under severe conditions of low temperature and high humidity, and has favorable adhesive force and corrosion resistance for substrates with a small amount of oil stains and rust on the surfaces.

Description

technical field [0001] The invention relates to the technical field of paint preparation, in particular to a special anticorrosion paint for steel structures and a preparation method thereof. Background technique [0002] According to reports, the direct economic loss caused by metal corrosion accounts for about 4% of the gross national product in my country every year. Therefore, the anti-corrosion problem of metal has received great attention, and coating anti-corrosion coatings is the most convenient and economical means at present. Solvent-based anti-rust coatings are widely used in steel structure, petrochemical, machinery and other industrial fields due to their excellent anti-rust and anti-corrosion effects and versatility. As we all know, traditional solvent-based coatings contain a large amount of organic solvents, which have many problems in terms of safety and environmental protection. They have huge hidden dangers to people and the environment, and the country’s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D5/08C09D7/61C09D7/62C08F283/01C08F212/08C08F220/06C08F230/08C08G63/49
CPCC09D151/08C09D5/08C09D7/61C09D7/62C08F283/01C08G63/48C08K2003/3045C08K2003/321
Inventor 姚飞刘传奇朱敬林杨立峰高袆梁杨正杰
Owner ZHEJIANG TIANNU GROUP PAINT MFG
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