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Preparation method of epoxy resin modified waterborne acrylic emulsion

A water-based acrylic and epoxy resin technology, applied in the field of emulsion production, can solve the problems of unfavorable environmental protection, limited application, water resistance, adhesion and salt spray resistance, etc., and achieve the effect of improving performance and reducing dosage

Inactive Publication Date: 2016-12-14
CHANGSHU LINRUN FLUORINE & SILICONE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The application of existing water-based acrylic emulsions in industrial coatings still has major performance defects, such as water resistance, adhesion and salt spray resistance, which are still far from the requirements, which limits its application in the industrial field
[0003] In addition, most of the existing epoxy-modified acrylic emulsions on the market are physically blended, and there are still relatively large defects in performance and storage stability.
Part of the chemically modified epoxy acrylic emulsion contains a lot of solvents, which is not conducive to environmental protection requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method for epoxy resin modified water-based acrylic emulsion, comprising the following steps:

[0020] Put 4.5kg of epoxy resin E-20, 45kg of styrene, 135kg of methyl methacrylate, 90kg of butyl ester and 4.5kg of acrylic acid into the mixer, stir for 30 minutes, and mix well to obtain the first group Minute;

[0021] Add 100kg of water and 5kg of alkylphenol polyoxyethylene ether sulfate into the pre-emulsification tank and mix evenly, add the mixed first component into the pre-emulsification tank, stir and pre-emulsify for 0.5 hours to obtain the second component ;

[0022] Add 400kg of water and 3.5kg of alkylphenol polyoxyethylene ether in the reactor, stir and heat up to 80 degrees;

[0023] Put 2.25kg of ammonium persulfate into the reactor, start to add the pre-emulsified second component dropwise, and the dropping time is 3.5 hours;

[0024] After the dropwise addition, keep the temperature for 1.5 hours, adjust the pH to 7, and filter the mater...

Embodiment 2

[0026] A preparation method for epoxy resin modified water-based acrylic emulsion, comprising the following steps:

[0027] Put 45kg of epoxy resin E-51, 135kg of styrene, 225kg of methyl methacrylate, 135kg of butyl ester and 13.5kg of acrylic acid into the mixer, stir for 30 minutes, and mix well to obtain the first component ;

[0028] Add 150kg of water and 10kg of sodium lauryl sulfate into the pre-emulsification tank and mix evenly, add the mixed first component into the pre-emulsification tank, stir and pre-emulsify for 1 hour, and obtain the second component;

[0029] Add 450kg of water and 8.5kg of alkylphenol polyoxyethylene ether in the reactor, stir and heat up to 80 degrees;

[0030] Put 4.5kg of ammonium persulfate into the reactor, start to drop the pre-emulsified second component for 3.5 hours;

[0031] After the dropwise addition, keep the temperature for 1.5 hours, adjust the pH to 7, and filter the material to obtain an epoxy resin modified water-based acr...

Embodiment 3

[0033] A preparation method for epoxy resin modified water-based acrylic emulsion, comprising the following steps:

[0034] Put 25kg of epoxy resin E-44, 90kg of styrene, 180kg of methyl methacrylate, 110kg of butyl ester and 8kg of acrylic acid into the mixer, stir for 30 minutes, and mix well to obtain the first component;

[0035] Add 125kg of water and 8kg of fatty alcohol polyoxyethylene ether sulfate in the pre-emulsification tank and mix evenly, add the mixed first component into the pre-emulsification tank, stir and pre-emulsify for 0.8 hours to obtain the second component;

[0036] Add 400~450kg of water and 3.5~8.5kg of alkylphenol polyoxyethylene ether into the reaction kettle, stir and raise the temperature to 80 degrees;

[0037] Put 4kg of ammonium persulfate into the reaction kettle, start to drop the pre-emulsified second component, and add the time for 3.5 hours;

[0038] After the dropwise addition, keep the temperature for 1.5 hours, adjust the pH to 7, and...

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Abstract

The invention discloses a preparation method of an epoxy resin modified waterborne acrylic emulsion. The preparation method comprises the following steps: putting epoxy resin, styrene, methyl methacrylate, butyl ester and acrylic acid in a stirrer, stirring for 30 minutes, and mixing evenly to obtain a first component; adding water and a first emulsifying agent in a pre-emulsification tank, mixing evenly, adding the well mixed first component into the pre-emulsification tank, and stirring and pre-emulsifying for 0.5-1 hour to obtain a second component; adding water and a second emulsifying agent in a reaction kettle, and stirring and heating to 80 DEG C; adding an initiator in the reaction kettle, starting to add the pre-emulsified second component dropwise, adding dropwise for 3.5 hours, thermally insulating for 1.5 hours after adding dropwise, and regulating the ph to 7. Through the mode, the preparation method of the epoxy resin modified waterborne acrylic emulsion greatly improves the adhesive force on base materials like metal and glass, improves the properties of water tolerance, salt spray resistance and the like, and is more environmentally friendly.

Description

technical field [0001] The invention relates to the field of emulsion production, in particular to a preparation method of epoxy resin modified water-based acrylic emulsion. Background technique [0002] The application of existing water-based acrylic emulsions in industrial coatings still has relatively large performance defects, such as water resistance, adhesion and salt spray resistance, which are still far from the requirements, which limits its application in the industrial field. [0003] In addition, most of the existing epoxy-modified acrylic emulsions on the market are physically blended, and there are still relatively large defects in performance and storage stability. Some chemically modified epoxy acrylic emulsions contain a lot of solvents, which is not conducive to environmental protection requirements. Contents of the invention [0004] The technical problem mainly solved by the present invention is to provide a preparation method of epoxy resin modified w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F212/08C08F220/14C08F220/18C08F220/06
CPCC08F283/10C08F220/1804
Inventor 彭新生
Owner CHANGSHU LINRUN FLUORINE & SILICONE MATERIAL
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