Water-based fluorinated acrylate copolymer emulsion and preparation method thereof

A technology of acrylate and hydroxypropyl acrylate, which is applied in the field of water-based fluorine-containing acrylate copolymer emulsion and its preparation, can solve problems such as air pollution, non-environmental protection, and health effects of construction workers, and achieve good water and oil resistance, comprehensive and practical High performance, good self-cleaning effect

Active Publication Date: 2022-06-24
上海水立方新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current solvent-based coatings have the following disadvantages: 1. There is a large amount of VOC emissions during the coating process, which pollutes the atmosphere and is not environmentally friendly.
2. It has a certain impact on the health of construction workers. 3. The state will levy environmental taxes on the excessive VOC emissions of solvent-based coatings, which will undoubtedly increase the cost of enterprises

Method used

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  • Water-based fluorinated acrylate copolymer emulsion and preparation method thereof
  • Water-based fluorinated acrylate copolymer emulsion and preparation method thereof
  • Water-based fluorinated acrylate copolymer emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of an aqueous fluorine-containing acrylate copolymer emulsion, comprising the following steps:

[0045] (1) Take acrylic acid, methyl methacrylate and hydroxypropyl acrylate, mix uniformly under nitrogen atmosphere, add azobisisobutyronitrile and N,N-dimethylformamide, react at 60°C for 12h, and settle in n-hexane , vacuum drying to obtain a prepolymer; the weight ratio of the acrylic acid, methyl methacrylate and hydroxypropyl acrylate is 2:1:3, and the azobisisobutyronitrile is acrylic acid, methyl methacrylate and 2 wt% of the total amount of hydroxypropyl acrylate monomers.

[0046] Mix the prepolymer and dopamine hydrochloride, dissolve the mixture of dichloromethane and dimethylformamide in a volume of 1:1, add 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt acid salt, stirred for 30min, added triethylamine, reacted at 25°C for 24h, washed and dried after the reaction, to obtain a dopamine-modified prepolymer; the mass ratio of the prepoly...

Embodiment 2

[0054] A preparation method of an aqueous fluorine-containing acrylate copolymer emulsion, comprising the following steps:

[0055] (1) Take acrylic acid, methyl methacrylate and hydroxypropyl acrylate, mix uniformly under nitrogen atmosphere, add azobisisobutyronitrile and N,N-dimethylformamide, react at 65°C for 11h, and settle in n-hexane , vacuum drying to obtain a prepolymer; the weight ratio of the acrylic acid, methyl methacrylate and hydroxypropyl acrylate is 2:1:3, and the azobisisobutyronitrile is acrylic acid, methyl methacrylate and 2 wt% of the total amount of hydroxypropyl acrylate monomers.

[0056] Mix the prepolymer and dopamine hydrochloride, dissolve the mixture of dichloromethane and dimethylformamide in a volume of 1:1, add 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt acid salt, stirred for 35min, added triethylamine, reacted at 28°C for 22h, washed and dried after the reaction to obtain a dopamine-modified prepolymer; the mass ratio of the prepolym...

Embodiment 3

[0065] A preparation method of an aqueous fluorine-containing acrylate copolymer emulsion, comprising the following steps:

[0066] (1) Take acrylic acid, methyl methacrylate and hydroxypropyl acrylate, mix uniformly under nitrogen atmosphere, add azobisisobutyronitrile and N,N-dimethylformamide, react at 70°C for 10h, and settle in n-hexane , vacuum drying to obtain a prepolymer; the weight ratio of the acrylic acid, methyl methacrylate and hydroxypropyl acrylate is 2:1:3, and the azobisisobutyronitrile is acrylic acid, methyl methacrylate and 2 wt% of the total amount of hydroxypropyl acrylate monomers.

[0067] Mix the prepolymer and dopamine hydrochloride, dissolve the mixture of dichloromethane and dimethylformamide in a volume of 1:1, add 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt acid salt, stirred for 40min, added triethylamine, reacted at 30°C for 20h, washed and dried after the reaction, to obtain a dopamine-modified prepolymer; the mass ratio of the prepoly...

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Abstract

The invention discloses a water-based fluorine-containing acrylate copolymer emulsion and a preparation method thereof. According to the scheme, methyl methacrylate, butyl methacrylate, methacrylic acid and other monomers are copolymerized to prepare a fluorocarbon resin emulsion; fluorine-containing acrylate monomers such as trifluoroethyl acrylate, octafluoropentyl methacrylate and hexafluorobutyl methacrylate are introduced in a preparation scheme, fluorine-containing groups are easy to migrate to the surface and are enriched on the surface, so that a coating film is endowed with excellent hydrophobic performance, and due to the advantages of excellent weather resistance, chemical resistance stability and the like of a fluorine-containing polymer, the hydrophobic property of the coating film is greatly improved. It can be guaranteed that a coating film has the properties of low surface energy, low friction, stain resistance, good water and oil resistance, self-cleaning performance and the like, and the comprehensive practicability is high. And meanwhile, pretreatment and parameter limitation are carried out on the PET film in cooperation with the scheme, so that the adhesive force between the coating film and the PET film is further improved.

Description

technical field [0001] The invention relates to the technical field of fluorocarbon coatings, in particular to an aqueous fluorine-containing acrylate copolymer emulsion and a preparation method thereof. Background technique [0002] The PET film of the solar photovoltaic backplane is located in the outermost layer on the back of the module. At present, the solvent-based fluorocarbon coating is roll-coated on the back of the PET film to strengthen the adhesion of the two layers of film, thereby protecting the solar cell module from the erosion of water vapor and blocking Oxygen prevents oxidation, high and low temperature resistance, good insulation and aging resistance, and corrosion resistance. However, the current solvent-based coatings have the following shortcomings: 1. There is a large amount of VOC emissions during the coating process, which pollutes the atmosphere and is not environmentally friendly. 2. It has a certain impact on the health of construction workers. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D7/62C08F265/06C08F220/14C08F220/18C08F220/06C08F220/20C08F220/24
CPCC09D151/003C09D7/62C08F265/06C08F220/14C08F220/1804C08F220/06C08F220/20C08F220/24C08K9/06C08K3/36
Inventor 郑泓何湖家
Owner 上海水立方新材料有限公司
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