Silicon-fluorine-containing styrene-acrylic emulsion and preparation method thereof

A styrene-acrylic emulsion and silicon-fluorine technology, applied in the direction of coating, can solve the problems of easy hydrolysis and flocculation of organic silicon, poor compatibility of organic fluorine, few patents, etc., which is beneficial to market competition, inhibits hydrolysis, and fully reacts Effect

Inactive Publication Date: 2015-10-07
GUANGZHOU GLORYSTAR CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the compatibility of organic fluorine is poor, and there are certain problems in the stability of the emulsion, and the organic silicon is prone to hydrolysis and flocculation during the reaction process.
[0003] At present, the modification of styrene-acrylic emulsions with organic silicon and organic fluorine is still in the research and exploration stage, and no manufacturers have been found to sell silicon-containing fluorostyrene-acrylic emulsions in the market, and there are few related patents

Method used

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  • Silicon-fluorine-containing styrene-acrylic emulsion and preparation method thereof
  • Silicon-fluorine-containing styrene-acrylic emulsion and preparation method thereof
  • Silicon-fluorine-containing styrene-acrylic emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Prepare the styrene-acrylic emulsion containing silicon fluorine according to the following steps:

[0033] 1) Prepare a compound emulsifier solution in advance, specifically mix 6g Tween-60 and 3g sodium perfluorononoxybenzenesulfonate, measure 5ml deionized water, and stir well with a glass rod to obtain a compound Type emulsifier solution, spare.

[0034] Mix 20g of methyl acrylate, 20g of methyl methacrylate, 30g of styrene and 87ml of deionized water; in the emulsifier, add dropwise an emulsifier that accounts for 40% of the total amount of the compound emulsifier solution while emulsifying solution, continue to emulsify for 15 minutes after the dropwise addition, and obtain the pre-emulsion;

[0035] 2) Prepare the initiator solution in advance, specifically, add 3 g of ammonium persulfate to 10 ml of deionized water to fully dissolve, add 3 drops of acetic acid solution to adjust its pH to about 5, and set aside.

[0036] Add about one-third of the pre-emulsion...

Embodiment 2

[0040] Prepare the styrene-acrylic emulsion containing silicon fluorine according to the following steps:

[0041] 1) Pre-prepared compound emulsifier solution, specifically mixing 6g of sodium dodecylbenzenesulfonate and 2g of perfluorononoxybenzenesulfonate, and taking 6ml of deionized water, stirring with a glass rod Evenly obtain the compound emulsifier solution, set aside.

[0042] Mix 10g methyl acrylate, 30g methyl methacrylate, 30g styrene and 90ml deionized water, add dropwise the emulsifier solution that accounts for 40% of the total amount of the compound emulsifier solution while emulsifying in the emulsifier, drop Continue to emulsify for 15 minutes after adding to obtain the pre-emulsion;

[0043] 2) Prepare the initiator solution in advance, specifically, add 2 g of ammonium persulfate to 10 ml of deionized water to fully dissolve, add 3 drops of acetic acid solution to adjust the pH of the initiator to about 5, and set aside.

[0044] Add about one-third of t...

Embodiment 3

[0048] Prepare the styrene-acrylic emulsion containing silicon fluorine according to the following steps:

[0049] 1) Pre-prepared compound emulsifier solution, specifically mix 8g OP-10 and 4g sodium perfluorononyloxybenzene sulfonate, and measure 5ml deionized water, stir with a glass rod to get the compound type Emulsifier solution, set aside.

[0050] Mix 10g butyl acrylate, 30g ethyl methacrylate, 30g styrene and 83ml deionized water, add dropwise the emulsifier solution that accounts for 40% of the total amount of the compound emulsifier solution while emulsifying in the emulsifier, add dropwise Continue to emulsify for 15 minutes after completion to obtain the pre-emulsion;

[0051] 2) Prepare the initiator solution in advance, specifically, add 2 g of potassium persulfate to 10 ml of deionized water to fully dissolve, add 3 drops of acetic acid solution to adjust the pH value of the initiator to about 5, and set aside.

[0052] Add about one-third of the pre-emulsion...

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Abstract

The invention provides a silicon-fluorine-containing styrene-acrylic emulsion and a preparation method thereof. The silicon-fluorine-containing styrene-acrylic emulsion mainly comprises the following components in percentage by mass: 5-30% of acrylate monomer, 5-25% of styrene, 1-8% of organosilane, 1-5% of organic fluorine, 2-7% of emulsifier, 0.5-2% of initiator, 0-2% of hydrolysis inhibitor and 0.1-0.5% of ammonia water. The styrene-acrylic emulsion provided by the invention has the advantages of the organosilicon and organic fluorine, can effectively lower the emulsion cost, and has better water resistance and oil resistance.

Description

technical field [0001] The invention belongs to the field of architectural coatings, in particular to a styrene-acrylic emulsion containing silicon and fluorine and a preparation method thereof. Background technique [0002] Styrene-acrylic emulsion is a copolymer emulsion of styrene and acrylic monomers, and its development as an important intermediate product and raw material is getting faster and faster. After decades of development, it has been widely used in construction, coatings and adhesives and other fields. Because styrene-acrylic emulsion has certain defects in water resistance, oil resistance, weather resistance, high and low temperature resistance, aging resistance, and tensile strength, and it is easy to stick to dirt and deform, which limits its application range, so domestic and foreign scholars have paid attention to it. It has carried out a lot of modification research. The Chinese patent application whose publication number is CN102875739 A discloses a k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/14C08F230/08C08F220/22C08F220/18C08F290/06C08F2/26C08F2/30C09D125/14C09D151/08
Inventor 李志诚曾美婵罗伟胡新嵩张一甫
Owner GUANGZHOU GLORYSTAR CHEM
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