A kind of anti-flash rust styrene-acrylic emulsion and preparation method thereof

A styrene-acrylic emulsion and anti-flash rust technology, which is applied in the field of anti-flash rust styrene-acrylic emulsion and its preparation, can solve the problem of decreased adhesion between the paint film and the metal surface, stains that cannot be completely infiltrated by the paint film, and affect the overall paint film Appearance and other problems, to achieve the effect of solving heavy metal residues, strong mechanical properties, and preventing electrode reaction

Active Publication Date: 2018-10-30
佛山市顺德区蓝德堡实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the painting process, due to the high surface tension of the rust spots themselves, the stains cannot be completely infiltrated by the paint film, so flash rust occurs
[0004] The formation of flash rust will cause a significant decrease in the adhesion between the paint film and the metal surface, and even peeling off, resulting in a significant decrease in the mechanical properties of the paint film and seriously affecting the overall appearance of the paint film

Method used

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  • A kind of anti-flash rust styrene-acrylic emulsion and preparation method thereof

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preparation example Construction

[0026] The preparation method of the anti-flash rust styrene-acrylic emulsion of the present invention may further comprise the steps:

[0027] a. Bottom liquid preparation: Add 30-50% of the total amount of water and 1-3% of the total amount of emulsifier to the reactor with a stirrer, condenser, and constant-flow pump feeding device, and heat up until the temperature in the kettle reaches 75-85°C;

[0028] b. Preparation of monomer solution: styrene, n-butyl methacrylate, isooctyl methacrylate, hydrophilic monomer, total amount of emulsifier 2-4%, total amount of water 30- 50% mixed into a uniform solution, and stirred for 10-30 minutes for later use;

[0029] c. Preparation of initiator solution: add 1-5% of the total amount of initiator to 10% of the total amount of water, and stir to dissolve;

[0030] d. Preparation of post-addition initiator solution: add the remaining initiator to 10% of the total amount of water, stir to dissolve;

[0031] e. When the temperature i...

Embodiment 1

[0036] The anti-flash rust styrene-acrylic emulsion of the present invention mainly includes water, n-butyl methacrylate, isooctyl methacrylate, styrene, acrylic acid, sodium dodecylbenzenesulfonate, ammonium sulfate, and the content of the above components is as follows: The mass percentages are: water 50%; n-butyl methacrylate 17%; isooctyl methacrylate 10%; styrene 20%; acrylic acid 1%; sodium dodecylbenzenesulfonate 1%; ammonium sulfate 1%.

[0037] The preparation method of the anti-flash rust styrene-acrylic emulsion of the present invention may further comprise the steps:

[0038]a. Bottom liquid preparation: Add 30% of the total amount of water and 1% of the total amount of emulsifier to the reactor equipped with a stirrer, condenser, and constant-flow pump feeding device, and raise the temperature until the temperature in the kettle reaches 75°C;

[0039] b. Preparation of monomer solution: under normal temperature and pressure, styrene, n-butyl methacrylate, isoocty...

Embodiment 2

[0046] The anti-flash rust styrene-acrylic emulsion of the present invention mainly comprises water, n-butyl methacrylate, isooctyl methacrylate, styrene, itaconic acid, maleic acid, resveratrol, acrylamide, methacrylic acid Amide, sodium dodecylbenzenesulfonate, sodium laurylsulfate, sodium polyglycol ether bisbenzenesulfonate, ammonium sulfate, potassium persulfate and sodium persulfate, the contents of the above components are calculated by mass percentage For: water 50%; n-butyl methacrylate 20%; isooctyl methacrylate 10%; styrene 5%; itaconic acid 1%; maleic acid 1%; resveratrol 1%; acrylamide 1%; Methacrylic acid amide 1%; Sodium dodecylbenzene sulfonate 2%; Sodium lauryl sulfate 2%; Potassium sulfate 2%; Sodium persulfate 1%.

[0047] The preparation method of the anti-flash rust styrene-acrylic emulsion of the present invention may further comprise the steps:

[0048] a. Bottom liquid preparation: Add 50% of the total amount of water and 3% of the total amount of emu...

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Abstract

The invention discloses a styrene-acrylic emulsion with a flash rust prevention function. The styrene-acrylic emulsion is characterized in that the styrene-acrylic emulsion with the flash rust prevention function comprises components in percentage by mass as follows: 50% of water, 5%-20% of n-butyl methacrylate, 5%-20% of methyl methacrylate isooctyl, 5%-20% of styrene, 1%-5% of hydrophilic monomers, 1%-5% of an emulsifier and 1%-5% of an initiator. The styrene-acrylic emulsion with the flash rust prevention function can prevent forming of flash rust during construction.

Description

technical field [0001] The invention relates to a styrene-acrylic emulsion and a preparation method thereof, in particular to an anti-flash rust styrene-acrylic emulsion and a preparation method thereof. Background technique [0002] Water-based styrene-acrylic emulsion is a very widely used architectural paint emulsion. However, when painting on metal materials, the traditional water-based styrene-acrylic emulsion has always had the problem of flash rust. [0003] Flash rust is the corrosion phenomenon that occurs on the metal surface during the drying process of the paint. There are two main causes of flash rust. First, when the water-based styrene-acrylic emulsion is mixed with paint, there is a lot of water. When the paint film is formed, the moisture in the paint volatilizes slowly, and the viscosity of the paint film is relatively high, resulting in a large surface tension of the paint film, which cannot infiltrate the tiny pores on the metal surface. Moisture and ox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/06C08F222/02C08F2/26
Inventor 成煬霈罗云罗宇
Owner 佛山市顺德区蓝德堡实业有限公司
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