Low-fluorine hydrophobic latex film and preparation method thereof

A technology of water emulsion and polyacrylate emulsion, which is applied in the field of hydrophobic materials, can solve the problems that the cost and performance effect of fluorine-containing polyacrylate coatings cannot be taken into account at the same time, and the preparation process is complicated, and achieves excellent hydrophobicity, increased surface roughness, The effect of improving hydrophobicity and thermal stability

Inactive Publication Date: 2019-07-05
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a low-fluorine hydrophobic latex film and its preparation method to solve the problem that the cost and performance effect of the existing fluorine-containing polyacrylate coating cannot be taken into account at the same time and the preparation process is complicated

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  • Low-fluorine hydrophobic latex film and preparation method thereof
  • Low-fluorine hydrophobic latex film and preparation method thereof
  • Low-fluorine hydrophobic latex film and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0046] The low-fluorine hydrophobic latex film of the present embodiment is cured after blending the following raw materials: 10wt% fluorine-containing polyacrylate emulsion and 90wt% non-fluorine-containing polyacrylate emulsion; the solid content in the mixed emulsion after blending is 45wt%, the fluorine content is 1wt%.

[0047] Among them, the fluorine-containing polyacrylate emulsion is prepared by the following raw materials: fluorine-containing acrylate monomers accounting for 15 wt% of the total monomer mass, 85 wt% acrylate monomers accounting for the total monomer mass, accounting for 1.5 wt% of the total monomer mass Surfactant, the initiator accounting for 0.15wt% of the total mass of the monomer, the co-stabilizer accounting for 1.5wt% of the total mass of the monomer, and 3 times the water of the total mass of the monomer; wherein, the total mass of the monomer is The sum of the mass of fluoroacrylate monomer and acrylate monomer.

[0048] The fluorine-containi...

Embodiment 2

[0058] The low-fluorine hydrophobic latex film of the present embodiment is cured after blending the following raw materials: 90wt% fluorine-containing polyacrylate emulsion and 10wt% non-fluorine-containing polyacrylate emulsion; the solid content in the mixed emulsion after blending is 23wt%, and the fluorine content is 9wt%.

[0059] Among them, the fluorine-containing polyacrylate emulsion is prepared by the following raw materials: fluorine-containing acrylate monomer accounting for 25wt% of the total monomer mass, 75wt% acrylate monomer accounting for the total monomer mass, accounting for 3.5wt% of the total monomer mass Surfactant, the initiator accounting for 0.4wt% of the total mass of the monomer, the co-stabilizer accounting for 3.5wt% of the total mass of the monomer, and 3 times the water of the total mass of the monomer; wherein, the total mass of the monomer is The sum of the mass of fluoroacrylate monomer and acrylate monomer.

[0060] The fluorine-containing...

Embodiment 3

[0070] The low-fluorine hydrophobic latex film of the present embodiment is cured after blending the following raw materials: 20wt% fluorine-containing polyacrylate emulsion and 80wt% non-fluorine-containing polyacrylate emulsion; the solid content in the mixed emulsion after blending is 42wt%, the fluorine content is 2wt%.

[0071] Among them, the fluorine-containing polyacrylate emulsion is prepared by the following raw materials: fluorine-containing acrylate monomers accounting for 20 wt% of the total monomer mass, accounting for 80 wt% of the total monomer mass acrylate monomers, accounting for 2.5 wt% of the total monomer mass Surfactant, the initiator accounting for 0.3wt% of the total mass of the monomer, the co-stabilizer accounting for 2.5wt% of the total mass of the monomer, and 3.5 times the water of the total mass of the monomer; wherein, the total mass of the monomer is The sum of the mass of fluoroacrylate monomer and acrylate monomer.

[0072] The fluorine-cont...

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Abstract

The invention discloses a low-fluorine hydrophobic latex film and a preparation method thereof, and belongs to the field of hydrophobic materials. The low-fluorine hydrophobic latex film is prepared by blending the following raw materials: 10 wt%-90 wt% of a fluorine-containing polyacrylate emulsion and 10 wt%-90 wt% of non-fluorine polyacrylate emulsion, and carrying out curing, wherein the solidcontent in the blended emulsion is less than or equal to 45 wt%, and the fluorine content in the solid content is less than or equal to 9 wt%. The fluorine-containing polyacrylate emulsion and the non-fluorine polyacrylate emulsion are mixed at a temperature of 25-35 DEG C, then film forming is carried out at room temperature, ultrasonic cleaning is carried out, and drying is carried out at a temperature of 45-55 DEG C to obtain the low-fluorine hydrophobic latex film. According to the invention, the use amount of fluorine-containing monomers is reduced, excellent surface performance of a fluorine-containing acrylate polymer is further improved, and the polymer film is endowed with better hydrophobicity, thermal stability, solvent resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of hydrophobic materials, in particular to a low-fluorine hydrophobic emulsion film and a preparation method thereof. Background technique [0002] Fluoropolymers have many excellent properties such as excellent corrosion resistance, weather resistance, thermal stability, water and oil repellency, good optical properties and low surface friction coefficient, etc., and have a long service life. It has a wide range of applications in the fields of processing aids, fabric finishing, optical devices, etc. Fluorine-containing acrylate copolymers are one of the important types. [0003] Commercial fluorine-containing polyacrylate water-repellent and antifouling coatings are generally polymerized by one or several fluorine-containing monomers and non-fluorine-containing monomers. The polarity of the fluorine-containing group and other groups is very different. During the curing and film-forming process of the cop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04C08L33/08C08J5/18C08F220/10C08F220/24
CPCC08F220/10C08J5/18C08J2333/04C08J2333/16C08J2433/04C08J2433/16C08F220/24
Inventor 余自力王秀丽顾爱群余先巍邱孝涛
Owner SICHUAN UNIV
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