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Fluorocarbon elastomer latex and its preparation method

An elastomer and fluorocarbon technology, which is applied in the field of fluorocarbon elastomer emulsion and its preparation, can solve the problems of affecting the decorative protective effect of coatings, poor stain resistance of elastic exterior wall coatings, and poor weather resistance of latex films.

Inactive Publication Date: 2006-07-12
高明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the elastic acrylic emulsion widely used at home and abroad usually uses acrylate monomer as the main component. Although this emulsion has good low-temperature flexibility and elasticity, the weather resistance of the latex film is not good, and the elastic exterior wall prepared with it The stain resistance of the coating is very poor. As time goes by, the network cracks of the coating film appear to varying degrees or cracks of different sizes appear along with the cracking of the cement mortar of the wall, which affects the decorative protection of the coating. effect

Method used

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  • Fluorocarbon elastomer latex and its preparation method
  • Fluorocarbon elastomer latex and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In a four-necked flask with a condenser, a dropping device, a stirrer, and a thermometer, add 150 grams of deionized water, 3.5 grams of methacrylamide isopropyl sulfonate, and 1.85 grams of nonylphenol polyoxyethylene ether, Sodium bicarbonate 0.27 g. After fully dissolving, heat up to 75-80°C. After 5 minutes, 15.0 grams of methyl methacrylate, 12.5 grams of methacrylic acid, 135.0 grams of butyl acrylate, 27.5 grams of isobornyl methacrylate, 47.5 grams of hexafluorobutyl acrylate, and 1.5 grams of NP-40 were added dropwise. 1.5 grams of nonylphenol polyoxyethylene ether, 2.0 grams of N-methylolacrylamide, the monomer pre-emulsion prepared by the mixture of 50.0 grams of deionized water, while adding 1.75 grams of ammonium persulfate (dissolved in 50.0 grams of deionized water) deionized water) in aqueous solution. The addition was completed in 2.5-3 hours, and the reaction was carried out at 80°C for 2 hours. Add 0.2 g of tert-butyl hydroperoxide (dissolved in 5 ...

Embodiment 2

[0023] In a four-neck flask equipped with a condenser, dropping device, stirrer, and thermometer, add 150 grams of deionized water, 3.6 grams of methacrylsulfonate, 1.8 grams of octylphenol polyoxyethylene ether, and sodium bicarbonate 0.45 grams. After fully dissolving, heat up to 75-80°C. After 5 minutes, 35 grams of methyl methacrylate, 10.0 grams of acrylic acid, 120 grams of butyl acrylate, 10.0 grams of isobornyl acrylate, 15 grams of dodecafluoroheptyl acrylate, 30.0 grams of hexafluorobutyl acrylate, 4.0 N-methylol acrylamide, 1.5 grams of octylphenol polyoxyethylene ether, 3.0 grams of sodium methacryl sulfonate, monomer pre-emulsion prepared from a mixture of 50.0 grams of deionized water, while adding persulfuric acid dropwise Ammonium 1.5 g (dissolved in 35 g deionized water) in water. The addition was completed in 2.5-3 hours, and the reaction was carried out at 80°C for 2 hours. Add 0.25 grams of tert-butyl hydroperoxide (dissolved in 5 grams of deionized wate...

Embodiment 3

[0025] In a four-necked flask equipped with a condenser, a dropping device, an agitator, and a thermometer, add 125 grams of deionized water, 3.59 grams of methacrylamide isopropyl sulfonate, 1.915 grams of fatty alcohol polyoxyethylene ether, carbonic acid Sodium hydrogen 0.20 g. After fully dissolving, heat up to 75-80°C. After 5 minutes, 52.50 grams of methyl methacrylate, 12.67 grams of methacrylic acid, 100.0 grams of butyl acrylate, 22.5 grams of isobornyl methacrylate, 47.5 grams of dodecafluoroheptyl acrylate, and N-methylol 3.0 grams of acrylamide, 1.5 grams of NP-40, 1.5 grams of octylphenol polyoxyethylene ether, the monomer pre-emulsion prepared by the mixture of 51.5 grams of deionized water, while adding 1.8 grams of ammonium persulfate (dissolved in 50 grams in deionized water). The addition was completed in 2.5-3 hours, and the reaction was carried out at 80°C for 2 hours. Add 0.2 grams of tert-butyl hydroperoxide (dissolved in 5 grams of deionized water), c...

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Abstract

The invention relates to a fluorocarbon elastic solid emulsion and it's preparing method. The method uses fluorocarbon base to quench the acrylate macromole. The formation of the emulsion used base is that the organic fluorine base with the base total amount 10-30%, the olefin unsaturated acid ester base with the base total amount 5-15% and the olefin acrylate base with the base total amount 55-85%.

Description

Technical field: [0001] The invention relates to an organic fluorine monomer-modified acrylate elastic emulsion used as a building coating and a preparation method thereof. In particular, a fluorocarbon elastomer emulsion and a preparation method thereof. Background technique: [0002] At present, the elastic acrylic emulsion widely used at home and abroad usually uses acrylate monomer as the main component. Although this emulsion has good low-temperature flexibility and elasticity, the weather resistance of the latex film is not good, and the elastic exterior wall prepared with it The stain resistance of the coating is very poor. As time goes by, the network cracks of the coating film appear to varying degrees or cracks of different sizes appear along with the cracking of the cement mortar of the wall, which affects the decorative protection of the coating. effect. Invention content: [0003] In order to overcome the deficiencies brought about by the elastic acrylic emu...

Claims

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Application Information

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IPC IPC(8): C08F20/22C08F2/22
Inventor 高明
Owner 高明
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