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Styrene-acrylic emulsion and synthetic method thereof and electrical steel coating

A technology of styrene-acrylic emulsion and synthesis method, which is applied in the direction of coating, etc., can solve the problems affecting the long-term storage and use of electrical steel coatings, and achieve the effect of good surface quality, good resin dispersion and fine particle size

Inactive Publication Date: 2014-03-12
MAGANG (GROUP) HOLDING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, after the acrylic emulsion widely used in electrical steel coatings is mixed with inorganic salt solution, the storage period is only 3 days, which affects the long-term storage and use of electrical steel coatings.

Method used

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  • Styrene-acrylic emulsion and synthetic method thereof and electrical steel coating
  • Styrene-acrylic emulsion and synthetic method thereof and electrical steel coating
  • Styrene-acrylic emulsion and synthetic method thereof and electrical steel coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of styrene-acrylic emulsion, each component accounts for the weight ratio of emulsion total amount:

[0029] 20.0% styrene, 20.0% butyl acrylate, 5.0% isooctyl acrylate, 0.5% methyl methacrylate, 0.5% methacrylic acid, 0.2% alkylphenol polyoxyethylene ether OP-10, 0.8% dodecane Sodium sulfate K12, 0.4% N-methylolacrylamide, 51.8% water, 0.3% sodium bicarbonate and 0.5% ammonium persulfate.

[0030] A kind of synthetic method of styrene-acrylic emulsion:

[0031] A, take each component according to the weight ratio that each component of above-mentioned styrene-acrylic emulsion accounts for the total amount of emulsion;

[0032] B. Styrene, butyl acrylate, isooctyl acrylate, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene ether OP-10, sodium lauryl sulfate K12, N-hydroxy Methacrylamide, sodium bicarbonate and part of the water weighed, mixed and stirred; pre-emulsified for 30 minutes to form a "pre-emulsion", and the weight of the part of the ...

Embodiment 2

[0041] A kind of styrene-acrylic emulsion, each component accounts for the weight ratio of emulsion total amount:

[0042] 10.0% styrene, 30.0% butyl acrylate, 2.5% isooctyl acrylate, 2.5% methyl methacrylate, 0.8% methacrylic acid, 0.4% alkylphenol polyoxyethylene ether OP-10, 1.0% dodecane Sodium sulfate K12, 0.6% N-methylolacrylamide, 51.0% water, 0.4% sodium bicarbonate and 0.8% ammonium persulfate;

[0043] A kind of preparation method of styrene-acrylic emulsion:

[0044] A, take each component according to the weight ratio that each component of above-mentioned styrene-acrylic emulsion accounts for the total amount of emulsion;

[0045] B. Styrene, butyl acrylate, isooctyl acrylate, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene ether OP-10, sodium lauryl sulfate K12, N-hydroxy Methacrylamide, sodium bicarbonate and part of the water weighed, mixed and stirred; pre-emulsified for 15 minutes to form a "pre-emulsion", and the weight of the part of th...

Embodiment 3

[0054] A kind of styrene-acrylic emulsion, each component accounts for the weight ratio of emulsion total amount:

[0055]30.0% styrene, 10.0% butyl acrylate, 1.0% isooctyl acrylate, 1.5% methyl methacrylate, 0.7% methacrylic acid, 0.3% alkylphenol polyoxyethylene ether OP-10, 1.7% dodecane Sodium sulfate K12, 0.8% N-methylolacrylamide, 54.0% water, 1.0% sodium bicarbonate and 1.2% ammonium persulfate;

[0056] A kind of preparation method of styrene-acrylic emulsion:

[0057] A, take each component according to the weight ratio that each component of above-mentioned styrene-acrylic emulsion accounts for the total amount of emulsion;

[0058] B. Styrene, butyl acrylate, isooctyl acrylate, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene ether OP-10, sodium lauryl sulfate K12, N-hydroxy Methacrylamide, sodium bicarbonate and part of the water weighed, mixed and stirred; pre-emulsified for 20 minutes to form a "pre-emulsion", and the weight of the part of the...

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Abstract

The invention discloses a styrene-acrylic emulsion and a synthetic method thereof and an electrical steel coating. The styrene-acrylic emulsion comprises the following components in percentage by weight: 10.0-30.0% of styrene, 10.0-30.0% of butyl acrylate, 1.0-5.0% of 2-ethylhexyl acrylate, 0.5-2.5% of methyl methacrylate, 0.3-1.0% of methacrylic acid, 0.1-1.5% of alkyl phenol polyoxyethylene ether OP-10, 0.1-2.0% of sodium dodecyl sulfate K12, 0.1-1.0% of N-methylolacrylamide, 40.0-70.0% of water, 0.2-2.0% of sodium bicarbonate, and 0.2-2.0% of ammonia persulfate. A preparation method comprises the steps of firstly preparing pre-emulsion and initiator water solution, and mixing and emulsifying the pre-emulsion and initiator water solution in batches. The styrene-acrylic emulsion is narrow in particle size distribution, and fine in particle size; the prepared electrical steel coating is good in resin dispersibility, long in painting liquid shelf life, and suitable for high-speed roller painting.

Description

technical field [0001] The invention relates to a styrene-acrylic emulsion, a synthesis method thereof and an electrical steel coating prepared from the synthesized styrene-acrylic emulsion. Background technique [0002] Electrical steel coatings are mainly rolled onto the surface of electrical steel sheets, and then baked and cured to form an insulating coating. Electrical steel coatings are mainly composed of inorganic salt solution, organic resin emulsion, additives and so on. [0003] The inorganic salt solution in the electrical steel coating contains water-soluble metal ions, acid radical ions, etc., so it is required that the organic resin emulsion does not cause demulsification and gelation when added to the inorganic salt solution. At present, after the acrylic emulsion widely used in electrical steel coatings is mixed with inorganic salt solution, the storage period is only 3 days, which affects the long-term storage and use of electrical steel coatings. Content...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/18C08F220/14C08F220/06C08F220/58C08F2/30C08F2/26C09D125/14
Inventor 孙致平董梅王立涛丰慧裴英豪施立发胡柯丁萍
Owner MAGANG (GROUP) HOLDING CO LTD
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