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Organofluorine emulsion with low fluorine content, preparation method and application of organofluorine emulsion

A technology of organic fluorine and fluorine content, which is applied in the direction of coating, etc., can solve the problems of large particle size of core-shell emulsion and cannot completely reduce the amount of fluorine monomer, so as to improve mechanical properties, facilitate large-scale production, and improve film formation performance effect

Active Publication Date: 2013-11-06
GUANGZHOU HUADU HAUYU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of core-shell polymerization can reduce the amount of fluorine-containing monomers, due to the large particle size of the core-shell emulsion, a higher concentration of the treatment solution is required to completely cover the surface of the substrate with emulsion particles, which cannot completely reduce the amount of fluorine-containing monomers. the goal of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of non-fluoropolymer emulsion

[0034] Raw materials: 95 g of lauryl methacrylate, 5 g of N-methylol acrylamide, and 1 g of dodecyl mercaptan. Pingpingjia-253g, OP-1013g, sodium dodecylbenzenesulfonate 1g, water 200g. Stir the above raw materials at room temperature for 5 minutes, then add a high-pressure homogenizer to homogenize for 5 minutes to obtain a pre-emulsion; first put 1 / 5 mass parts of the pre-emulsion into the reactor, and pass nitrogen gas for 10 minutes, heat up to 60 ° C, add Aqueous solution of 2,2'-azobis(2-amidinopropane) dihydrochloride. After 30 minutes of reaction, the remaining pre-emulsion was added dropwise, and the drop was completed in about 1 hour, and the reaction was continued for 3 hours to obtain a non-fluoropolymer emulsion with a particle size of about 200 nm.

[0035] (2) Preparation of organic fluoropolymer emulsion

[0036] Raw materials: 40 g of octadecyl methacrylate, 60 g of perfluorooctylethyl acrylate, and 1 g...

Embodiment 2

[0040] (1) Preparation of non-fluoropolymer emulsion

[0041]Raw materials: 95 g of stearyl methacrylate, 5 g of N-methylol acrylamide, and 1 g of dodecyl mercaptan. Pingpingjia-253g, OP-1013g, sodium dodecylbenzenesulfonate 1g, water 200g. Stir the above raw materials at room temperature for 5 minutes, then add a high-pressure homogenizer to homogenize for 5 minutes to obtain a pre-emulsion; first put 1 / 5 mass parts of the pre-emulsion into the reactor, and pass nitrogen gas for 10 minutes, heat up to 60 ° C, add Aqueous solution of 2,2'-azobis(2-amidinopropane) dihydrochloride. After 30 minutes of reaction, the remaining pre-emulsion was added dropwise, and the drop was completed in about 1 hour, and the reaction was continued for 3 hours to obtain a non-fluoropolymer emulsion with a particle size of about 500 nm.

[0042] (2) Preparation of organic fluoropolymer emulsion

[0043] Raw materials: Pingpingjia-253g, OP-1013g, sodium dodecylbenzenesulfonate 1g, azobisisohepta...

Embodiment 3

[0047] (1) Preparation of non-fluoropolymer emulsion

[0048] Raw materials: 95g of vinylidene chloride, 5g of N-methylolacrylamide, 1g of dodecyl mercaptan. Pingpingjia-253g, OP-1013g, sodium dodecylbenzenesulfonate 1g, water 200g. Stir the above raw materials at room temperature for 5 minutes, then add a high-pressure homogenizer to homogenize at low temperature for 5 minutes to obtain a pre-emulsion; first put 1 / 5 mass part of the pre-emulsion into the reactor, and pass nitrogen gas for 10 minutes, and heat up to 60 ° C. An aqueous solution of 2,2'-azobis(2-amidinopropane) dihydrochloride was added. After reacting for 30 minutes, the remaining pre-emulsion was added dropwise under pressure, and the drop was completed in about 1 hour, and the reaction was continued for 3 hours to obtain a non-fluoropolymer emulsion with a particle size of about 1000 nm.

[0049] (2) Preparation of organic fluoropolymer emulsion

[0050] Raw materials: Pingpingjia-253g, OP-1013g, sodium do...

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Abstract

The invention discloses an organofluorine emulsion with low fluorine content, a preparation method and application of the organofluorine emulsion. The organofluorine emulsion is composed of 50-90 percent of non-fluoropolymer emulsion and 50-10 percent of organofluorine emulsion according to mass fraction; the microcrystal melting point of the non-fluoropolymer emulsion ranges from 30 DEG C to 70 DEG C, the grain diameter of the organofluorine emulsion ranges from 1 to 150nm, and the grain diameter of the non-fluoropolymer emulsion is 1.5-10 times of that of the organofluorine emulsion; and the cost of the organofluorine emulsion is improved under a condition that the surface characteristics of the organofluorine emulsion is not affected. The organofluorine emulsion and the non-fluoropolymer emulsion are mixed before being used, and the surface characteristics of the organofluorine emulsion can be kept after the surface of an article is processed. The organofluorine emulsion with low fluorine content can be used for surface processing of various base materials such as wood, stone, metal, handicraft article, fiber and the like, and enables the surface of the base material to have the antifouling, water-proofing, oil-proofing and corrosion resisting characteristics.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and in particular relates to an organic fluorine emulsion with low fluorine content and a preparation method and application thereof. Background technique [0002] Organic fluorine emulsion is a type of emulsion with relatively excellent comprehensive properties, but the large-scale application of organic fluorine emulsion is severely limited due to the expensive fluorine monomer. In recent years, how to reduce the amount of fluorine monomers has become the focus of research and development of organic fluorine emulsions. In conventional emulsion polymerization, it is often necessary to add a large amount of fluorine monomers to obtain organic fluorine emulsions with satisfactory surface properties, usually accounting for more than 50% of the total monomer weight, which makes the cost of the final emulsion higher. Although the use of core-shell polymerization can reduce the amoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/10C08L27/08C08F220/18C08F220/58C08F220/24C08F214/08C09D133/10C09D127/08
Inventor 李文
Owner GUANGZHOU HUADU HAUYU CHEM