Salt-spray-resistant and anti-aging water-based paint and preparation method thereof

A water-based coating, aging-resistant technology, applied in antifouling/underwater coatings, anti-corrosion coatings, coatings, etc., can solve the problems of poor emulsion storage stability, complex synthesis process, low resin grafting efficiency, etc., and achieve storage stability. Good properties, low acid value, and excellent adhesion

Active Publication Date: 2017-10-24
HUNAN BANFERT NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of organic solvent is required in the resin synthesis process, and the grafting efficiency of the acrylic prepolymer and the epoxy ester resin is low, and some ungrafted epoxy ester is easy to separate out from the emulsion, and the storage stability of the emulsion is relatively poor. The process is complex and cumbersome, and the production efficiency is low

Method used

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  • Salt-spray-resistant and anti-aging water-based paint and preparation method thereof
  • Salt-spray-resistant and anti-aging water-based paint and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] An embodiment of the salt-spray-resistant and aging-resistant water-based paint and a preparation method thereof of the present invention. The preparation method of this salt-spray-resistant, aging-resistant water-based paint is as follows (each component is by weight percentage):

[0032] (1) Preparation of water-based epoxy ester emulsion

[0033] Add 15% of epoxy resin, 6% of unsaturated fatty acid and 0.2% of molecular weight regulator into the reaction kettle, gradually raise the temperature to 140°C, start stirring after the material melts, raise the temperature to about 190°C, and keep at this temperature for esterification When the acid value is 5mgKOH / g~15mgKOH / g, add 3% unsaturated fatty acid and cool down to 120°C; add 14% acrylic monomer, 2% vinyl phosphate monomer, 5% organic silicon intermediate, initiator Mix 0.5% of the agent evenly, and gradually add it dropwise into the reaction kettle for 5 hours. After the dropwise addition, keep it warm for 3-4 hou...

Embodiment 2

[0038] An embodiment of a salt-spray-resistant and aging-resistant water-based paint and a preparation method thereof of the present invention. The preparation method of this salt-spray-resistant, aging-resistant water-based paint is as follows (each component is by weight percentage):

[0039] (1) Preparation of water-based epoxy ester emulsion

[0040] Add 16% of epoxy resin, 6% of unsaturated fatty acid and 0.2% of molecular weight regulator into the reaction kettle, gradually raise the temperature to 140°C, start stirring after the material melts, raise the temperature to about 190°C, and keep at this temperature for esterification When the acid value is 5mgKOH / g~15mgKOH / g, add 3% unsaturated fatty acid and cool down to 120°C; add 15% acrylic monomer, 3% vinyl phosphate monomer, 5% organic silicon intermediate, initiator Mix 0.5% of the agent evenly, and gradually add it dropwise into the reaction kettle for 5 hours. After the dropwise addition, keep it warm for 3-4 hours...

Embodiment 3

[0045] An embodiment of a salt-spray-resistant and aging-resistant water-based paint and a preparation method thereof of the present invention. The preparation method of this salt-spray-resistant, aging-resistant water-based paint is as follows (each component is by weight percentage):

[0046] (1) Preparation of water-based epoxy ester emulsion

[0047] Add 18% of epoxy resin, 6% of unsaturated fatty acid and 0.2% of molecular weight regulator into the reaction kettle, gradually raise the temperature to 140°C, start stirring after the material melts, raise the temperature to about 190°C, and keep at this temperature for esterification When the acid value is 5mgKOH / g~15mgKOH / g, add 3% unsaturated fatty acid and cool down to 120°C; add 17% acrylic monomer, 3% vinyl phosphate monomer, 5% organic silicon intermediate, initiator Mix 0.5% of the agent evenly, and gradually add it dropwise into the reaction kettle for 5 hours. After the dropwise addition, keep it warm for 3-4 hours...

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Abstract

The invention discloses salt-spray-resistant and anti-aging water-based paint and a preparation method thereof. The salt-spray-resistant and anti-aging water-based paint is prepared from components in percentage by weight as follows: 40%-60% of a water-based epoxy ester emulsion, 8%-20% of an anti-rust pigment, 1%-5% of a coalescing agent, 4%-20% of filler, 0.5%-2% of a dispersant, 0.5%-2% of a defoaming agent, 0.3%-0.6% of an anti-settling agent, 0.1%-2% of an anti-rust agent, 0.5%-2% of a flash-rust inhibitor, 0.1%-2% of a wetting agent, 0.1%-0.5% of a mildew preventive, 0.1%-2% of a thickening agent, 0.1%-0.3% of a pH conditioning agent and 1%-20% of deionized water. The water-based paint can resist neutral salt spray for 550 H and resist QUV aging for 600 H, has the advantages of high water resistance, good storage stability, contamination resistance, fast drying, safety, environment-friendliness, simple preparation process and the like, is environment-friendly, accords with the environmental protection development trend and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of water-based industrial coatings, and in particular relates to a salt spray-resistant and aging-resistant water-based coating and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection and the corresponding introduction of environmental protection laws and regulations in various countries, water-based anti-corrosion industrial paints with low VOC emissions have become the focus of attention. There have been many water-based anti-corrosion coatings on the market, but they have slow drying, poor initial water resistance, and salt resistance. Defects such as poor fog performance. The performance of water-based coatings prepared from a single type of resin cannot compete with traditional solvent-based coatings, and compound modification of materials is required to enhance the competitiveness of water-based industrial coatings. [0003] At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D5/08C09D5/14C09D5/16C09D7/12
CPCC08F220/00C08F230/02C08F290/00C08G59/1472C08K2003/321C08K2003/327C08L2201/08C08L2205/025C08L2205/035C09D5/084C09D5/14C09D5/1662C09D5/1687C09D151/08C08L83/04C08L71/00C08L91/00C08K13/02C08K3/36C08K3/04C08K3/32C08K3/34C08K5/103
Inventor 陈红伟李新雄
Owner HUNAN BANFERT NEW MATERIALS TECH
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