Unlock instant, AI-driven research and patent intelligence for your innovation.

High fluorine content aqueous fluoropolymer emulsion and preparation method thereof

A technology of polymer emulsion and water-based fluorine, applied in the field of polymer emulsion, can solve the problems of low fluorine content of fluoropolymer, complex production process, unsatisfactory performance, etc., and achieves low surface energy, scientific and reasonable composition, and simple processing method. easy effect

Inactive Publication Date: 2016-08-17
DALIAN UNIV OF TECH
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to propose a high fluorine content water-based fluoropolymer emulsion and its preparation method in view of the problems of low fluorine content, unsatisfactory performance, complicated production process, environmental protection and low production efficiency of the existing fluorine-containing polymers , the water-based fluoropolymer emulsion with high fluorine content has excellent water resistance, outstanding surface properties and more excellent weather resistance. Due to the combination of low surface energy and high weather resistance, it has wider application prospects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High fluorine content aqueous fluoropolymer emulsion and preparation method thereof
  • High fluorine content aqueous fluoropolymer emulsion and preparation method thereof
  • High fluorine content aqueous fluoropolymer emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The preparation method of the above-mentioned high fluorine content aqueous fluoropolymer emulsion comprises the following steps:

[0039] The first step: the aliphatic carboxylic acid vinyl or allyl ester, linear carboxyl-containing alkenoic acid accounting for 70% to 90% of the total weight of aliphatic carboxylic acid vinyl or allyl ester, accounting for 40% % to 50% of the emulsifier and deionized water are put into the container, and a high-speed shear emulsifier is used to emulsify to prepare the first emulsified monomer solution, and the concentration (the total solute accounts for the mass percentage of the solution) is 60% to 70%;

[0040]The second step: the fluorine-containing acrylate monomer and / or fluorine-containing methacrylate monomer, the remaining 10% to 30% of aliphatic carboxylic acid vinyl or allyl ester, accounting for 20% of the total weight of the emulsifier %~40% emulsifier and deionized water are put into the container, and emulsified by a hig...

Embodiment 1

[0049] Put 149.15g of vinyl acetate, 4.97g of acrylic acid, 0.6g of sodium lauryl sulfate, 2.78g of octylphenol polyoxyethylene ether, 2.58g of styrylphenol polyoxyethylene ether, and 66.13g of deionized water Put it into a container and use a high-speed shear emulsifier to emulsify to make the first emulsified monomer solution.

[0050] Add 66.87g of fluorine-containing butyl acrylic acid, 25.60g of vinyl tert-carbonate, 0.41g of sodium lauryl sulfate, 1.92g of octylphenol polyoxyethylene ether, 1.78g of styrylphenol polyoxyethylene ether, 45.64 g of ionized water was put into a container and emulsified by a high-speed shear emulsifier to prepare a second emulsified monomer solution.

[0051] 1.51g of potassium persulfate was added into 80.34g of deionized water to make an initiator solution for use.

[0052] Put 10% of the first emulsified monomer solution, 90g of chlorotrifluoroethylene, 2.77g of mixed emulsifier, and 30.70g of deionized water into a high-pressure reactor ...

Embodiment 2

[0054] Vinyl acetate 132.67g, vinyl tertiary carbonate 17.03g, acrylic acid 4.86g, sodium lauryl sulfate 0.59g, octylphenol polyoxyethylene ether 2.77g, styrylphenol polyoxyethylene ether 2.57 g. Put 65.80 g of deionized water into a container and emulsify with a high-speed shear emulsifier to prepare the first emulsified monomer solution.

[0055] 66.35g of hexafluorobutyl methacrylate, 15.39g of vinyl acetate, 8.48g of vinyl tertiary carbonate, 0.35g of sodium lauryl sulfate, 1.64g of octylphenol polyoxyethylene ether, styrylphenol 1.53 g of polyoxyethylene ether and 39.11 g of deionized water were put into a container and emulsified by a high-speed shear emulsifier to prepare a second emulsified monomer solution.

[0056] 1.43g of potassium persulfate was added into 76.15g of deionized water to make an initiator solution for use.

[0057] Put 10% of the total weight of the first emulsified monomer solution into the first emulsified monomer solution, 84 g of chlorotrifluoro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides high-fluorine content aqueous fluoropolymer emulsion and a preparation method thereof. The high-fluorine content aqueous fluoropolymer emulsion comprises the following components in part by weight: 10.00-20.00 parts of chlorotrifluoroethylene, 5.00-20.00 parts of fluorine-containing acrylate monomer and / or fluorine-containing methacrylate monomer, 15.00-30.00 parts of aliphatic vinyl or allyl carboxylic ester, 0.50-3.00 parts of straight-chain carboxyl olefine acid, 0.10-2.00 parts of an initiator, 1.00-3.50 parts of an emulsifier, 0.05-2.00 parts of a buffering agent and 40.00-70.00 parts of deionized water. The high-fluorine content aqueous fluoropolymer emulsion has excellent water resistance, outstanding surface properties and excellent weather resistance, and has a wide application prospect in building materials, textiles, optical fibers, photovoltaic battery coatings, thin-film electronic packaging materials and the like.

Description

technical field [0001] The invention relates to polymer emulsion technology, in particular to an aqueous fluoropolymer emulsion with high fluorine content and a preparation method thereof. Background technique [0002] Fluoropolymers are high-performance materials that people have been paying attention to because of their excellent weather resistance, chemical resistance, stain resistance, extremely low surface energy, and high optical transparency. At present, fluorine-containing materials include polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polychlorotrifluoroethylene (PCTFE), fluorine-containing copolymers (such as FEVE), and the like. On this basis, researchers have been performing physical and chemical modifications and process improvements on these familiar materials in order to obtain broader application fields. Due to environmental protection, resource saving, and energy saving, water-based fluoropolymer emulsion is an important research direction...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F218/08C08F220/22C08F218/00C08F214/24C08F220/06C08F2/26C08F2/30C09D131/04
Inventor 刘洪珠边继明
Owner DALIAN UNIV OF TECH