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Method for preparing anionic fluorine-containing polyacrylate soap-free emulsion

A technology of polyacrylate and soap-free emulsion is applied in the field of material preparation to achieve the effect of high utilization rate and broad application prospects

Active Publication Date: 2017-01-04
山东韩师傅新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the synthesis of brush-type fluorine-containing amphiphilic block copolymers by RAFT polymerization and their use as polymer surfactants in fluorine-containing acrylate emulsions.

Method used

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  • Method for preparing anionic fluorine-containing polyacrylate soap-free emulsion
  • Method for preparing anionic fluorine-containing polyacrylate soap-free emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Weigh methyl acrylate, butyl methacrylate, and hexafluorobutyl methacrylate at a mass ratio of 10:5:1; weigh ammonium persulfate and deionized water at a mass ratio of 1:60; weigh The methyl acrylate, butyl methacrylate and hexafluorobutyl methacrylate were mixed evenly to prepare a mixed monomer; the weighed ammonium persulfate was added to the weighed deionized water, and the over Aqueous solution of ammonium sulfate;

[0086] First weigh the mixed monomer, and then weigh the ammonium sulfate aqueous solution, sodium bicarbonate, deionized water and the brush-type fluorine-containing amphiphilic block copolymer polymer with active end groups of thiocarbonate according to the mass of the mixed monomer. (acrylic acid-co-polyethylene glycol monomethyl ether acrylate)-b-hexafluorobutyl polyacrylate; the quality of ammonium persulfate aqueous solution is 1.4% of the mixed monomer quality; the quality of sodium bicarbonate is the mixed monomer quality 6.7% of 6.7%; the qua...

Embodiment 2

[0093] Weigh methyl acrylate, butyl acrylate and hexafluorobutyl acrylate at a mass ratio of 6:10:1; weigh potassium persulfate and deionized water at a mass ratio of 1:50; weigh the methyl acrylate ester, butyl acrylate and hexafluorobutyl acrylate were mixed evenly to prepare a mixed monomer; the weighed potassium persulfate was added to the weighed deionized water, and after mixing evenly, an aqueous solution of potassium persulfate was prepared;

[0094] First weigh the mixed monomer, and then weigh the potassium persulfate aqueous solution, sodium hydroxide, deionized water and the brush-type fluorine-containing amphiphilic block copolymer with active end groups of thiocarbonate according to the mass of the mixed monomer. Poly(acrylic acid-co-polyethylene glycol monomethyl ether acrylate)-b-polyhexafluorobutyl acrylate; the quality of potassium persulfate aqueous solution is 1.1% of the mixed monomer quality; the quality of sodium hydroxide is the mixed monomer 5.5% of th...

Embodiment 3

[0101] Weigh methyl methacrylate, butyl methacrylate and hexafluorobutyl methacrylate at a mass ratio of 2:5:1; weigh ammonium persulfate and deionized water at a mass ratio of 1:40; Mix the weighed methyl methacrylate, butyl methacrylate and hexafluorobutyl methacrylate to prepare a mixed monomer; add the weighed sodium persulfate to the weighed deionized water, and mix well After preparing sodium persulfate aqueous solution;

[0102]First weigh the mixed monomer, then weigh sodium persulfate, ammonia water, deionized water and brush-type fluorine-containing amphiphilic block copolymer poly(acrylic acid) with active end groups of thiocarbonate according to the mass of the mixed monomer. -co-polyethylene glycol monomethyl ether acrylate)-b-hexafluorobutyl polyacrylate; the quality of sodium persulfate aqueous solution is 0.4% of the mixed monomer quality; the quality of ammonia water is 1.1% of the mixed monomer quality; The quality of deionized water is 300% of the mixed mon...

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Abstract

The invention discloses a method for preparing anionic fluorine-containing polyacrylate soap-free emulsion. The method comprises the steps that acrylic monomers and fluorinated acrylate monomers are mixed to obtain mixed monomers, and an initiator and deionized water are mixed to obtain an initiator water solution; the initiator water solution, alkali, deionized water and an emulgator are weighed according to the mass of the mixed monomers, and the emulgator is fluorine-containing amphiphilic block copolymer poly(crylic acid-co-polyethylene glycol monomethyl ether methyl acrylate)-b-polyacrylic acid hexa-fluorin butyl ester; the mixed monomers and the initiator water solution are equally divided into three parts respectively; alkali, the deionized water, the emulgator, one part of mixed monomers and one part of initiator water solution are added into a four-mouth flask together; argon is introduced into the four-mouth flash, heating is carried out, the remaining mixed monomers and initiator water solution are added in the heating process, and the anionic fluorine-containing polyacrylate soap-free emulsion is obtained through cold water discharging. The anionic fluorine-containing polyacrylate soap-free emulsion with good emulsion particle stability can be prepared through the preparation method.

Description

technical field [0001] The invention belongs to the technical field of material preparation methods, and in particular relates to a preparation method of an anionic fluorine-containing polyacrylate soap-free emulsion. Background technique [0002] Fluorine-containing polyacrylate not only has the excellent bonding performance of acrylic resin, but also has the heat resistance, chemical stability, aging resistance, low surface energy and water and oil repellency of fluorine-containing polymers. It is used in fabric finishing, functional coatings, biological It has been widely used in medical, aerospace and microelectronics fields. The fluorine-containing polyacrylate emulsion prepared by conventional emulsion polymerization is easily desorbed by the influence of the external environment due to the small molecule emulsifier physically attached to the surface of the latex particle, which leads to the easy coagulation of the latex particle and reduces the stability of the emulsi...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F220/22C08F2/24C08F293/00
CPCC08F2/24C08F220/14C08F220/18C08F220/1804C08F293/005C08F220/22
Inventor 周建华姚红涛马建中
Owner 山东韩师傅新材料有限公司
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