Preparation method of aqueous fluorine-modified phosphorus-containing acrylate emulsion

An acrylate, water-based fluorine technology, applied in coating, textile and papermaking, fiber processing and other directions, can solve the problem of paint film adhesion needs to be improved, to improve hydrophobic and oleophobic properties, improve salt water resistance, stain resistance improved effect

Inactive Publication Date: 2014-06-04
西安佳龙油漆新技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent No. CN1388196A introduces fluorine-containing monomers, which significantly improves the salt water resistance and stain resistance of the emulsion, but the adhesion of the paint film still needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the embodiment of the present invention, a method for preparing a water-based fluorine-modified phosphorus-containing acrylate emulsion, the specific steps are as follows:

[0029] (1) Preparation of pre-emulsion: Add 1 / 4 of deionized water and 3 / 4 volume of compound emulsifier into the pre-emulsification reactor, stir well until it dissolves evenly, and then pass through the constant pressure dropping funnel to form a continuous drop. Add the pre-emulsion monomers in order, stir at high speed for 30-50 minutes, and prepare a stable pre-emulsion for later use;

[0030] (2) Preparation of seed emulsion: In a four-necked flask equipped with a stirrer, a spherical reflux condenser, and a constant pressure dropping funnel, add 2 / 5 of deionized water, 1 / 4 of an emulsifier, and 1% PH buffer , after stirring until it is evenly dissolved, add 5% pre-emulsion and 1 / 3 initiator (form a solution with deionized water) through a constant pressure dropping funnel at 60°C, heat up ...

Embodiment 2

[0037] In the embodiment of the present invention, a method for preparing a water-based fluorine-modified phosphorus-containing acrylate emulsion, the specific steps are as follows:

[0038] (1) Preparation of pre-emulsion: Add 1 / 4 deionized water and 3 / 4 compound emulsifier into the pre-emulsification reactor, stir well until it dissolves evenly, and press the Sequentially add pre-emulsion monomers, stir at high speed for 30-50 minutes, and prepare a stable pre-emulsion for later use;

[0039] (2) Preparation of seed emulsion: In a four-necked flask equipped with a stirrer, a spherical reflux condenser, and a constant pressure dropping funnel, add 2 / 5 deionized water, 1 / 4 emulsifier, and 1% PH buffer , after stirring until it dissolves evenly, add 5% pre-emulsion and 1 / 3 initiator (form a solution with deionized water) through a constant pressure dropping funnel at 60°C, heat up to 75°C, and keep warm for 10 minutes;

[0040] (3) Emulsion polymerization: drip the remaining p...

Embodiment 3

[0046] In the embodiment of the present invention, a method for preparing a water-based fluorine-modified phosphorus-containing acrylate emulsion, the specific steps are as follows:

[0047] (1) Preparation of pre-emulsion: Add 1 / 4 deionized water and 3 / 4 compound emulsifier into the pre-emulsification reactor, stir well until it dissolves evenly, and press the Sequentially add pre-emulsion monomers, stir at high speed for 30-50 minutes, and prepare a stable pre-emulsion for later use;

[0048] (2) Preparation of seed emulsion: In a four-necked flask equipped with agitator, spherical reflux condenser, and constant pressure dropping funnel, add 2 / 5 deionized water, 1 / 4 emulsifier, 1% PH buffer , after stirring until it is evenly dissolved, add 5% pre-emulsion and 1 / 3 initiator (form a solution with deionized water) through a constant pressure dropping funnel at 60°C, heat up to 75°C, and keep warm for 10min;

[0049] (3) Emulsion polymerization: Add the remaining pre-emulsion ...

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Abstract

The invention discloses a preparation method of an aqueous fluorine-modified phosphorus-containing acrylate emulsion. The preparation method comprises the steps of firstly preparing a pre-emulsion, then preparing a seed emulsion, and carrying out emulsion polymerization, so as to obtain the milky-white and slightly-blue aqueous fluorine-modified phosphorus-containing acrylate emulsion. According to the preparation method, a phosphate emulsifier is taken as an anionic emulsifier, meanwhile, phosphate is added as a functional monomer, phosphate groups are intruded into the emulsion, so that the emulsion has the characteristics of fine granularity and flash rusting resistance, and a coating has high adhesive force and certain salt water resistance; by adding a fluorine-containing modified monomer having good effects in the reduction of surface free energy and the improvement of surface dewatering and oleophobic performance, the water resistance of the coating of the emulsion is enhanced, and the pollution resistance of the coating of the emulsion is improved; meanwhile, the utilized fluorine-containing modified monomer is a fluorine-containing acrylic monomer, so that the problems of environment friendliness and biological harm of a long-fluorocarbon-chain compound are avoided, and the prepared emulsion is environmental friendly; the utilized nonionic emulsifier does not contain APEO (alkylphenol ethoxylate) and is environmental friendly.

Description

technical field [0001] The invention relates to the field of water-based coatings, in particular to a preparation method of water-based fluorine-modified phosphorus-containing acrylate emulsion. Background technique [0002] Acrylate emulsions currently on the market have disadvantages such as poor compactness, high water vapor and oxygen permeability, high minimum film-forming temperature, difficult rheological adjustment, more ions in the film-forming material, and large corrosion current. . The Chinese patent No. 201010605187.X added phosphate monomer to the polyacrylate emulsion, which inhibited the flash corrosion phenomenon during the film formation process, improved the adhesion between the coating film and the substrate, and improved the antirust performance of the coating film . The Chinese patent of patent No. CN1388196A introduces fluorine-containing monomers, so that performances such as salt water resistance and stain resistance of the emulsion are obviously i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/46C08F220/06C08F220/14C08F212/10C08F214/18C08F230/02C08F2/26C08F2/30C09D133/20D06M15/356
Inventor 赵妮
Owner 西安佳龙油漆新技术发展有限公司
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