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Method for preparing hydrophilic fluorine carbon metal paint

A fluorocarbon metal paint and hydrophilic technology, applied in latex paint, coating, etc., can solve problems such as air pollution and endangering the health of construction workers, and achieve the effect of zero pollution emission, high product quality and reasonable process

Inactive Publication Date: 2009-06-17
JIANGSU GUOLIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, fluorocarbon metal paint is still mainly solvent-based, containing a large amount of organic solvents. The volatilization of solvents during the drying process will seriously pollute the atmosphere and endanger the health of construction workers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Step 1. Prepare the pre-emulsified mixture

[0057] Add 400kg of soft water, 2kg of nonionic emulsifier, 1.5kg of fluorocarbon nonionic emulsifier, 20kg of vinyltrimethoxysiloxane containing unsaturated double bonds, 10kg of acrylic acid, and 100kg of butyl acrylate into a 1000L pre-emulsification kettle. 100kg of methyl methacrylate and 260kg of dodecafluoroacrylate monomer were emulsified for half an hour to obtain a pre-emulsified mixture.

[0058] Step 2. Preparation of Nano-modified Fluorocarbon Emulsion

[0059] Take 1 / 5 of the pre-emulsified mixture prepared in step 1 and add it to a 1000L reactor to heat up to 65°C, add 86.5kg of initiator potassium sulfate and water mixture (including 1kg of potassium sulfate), and heat up to 88°C for 0.5 hours Then add the remaining 4 / 5 pre-emulsified mixture dropwise, the dropwise addition is completed in 2.5 hours, keep the reaction temperature at 92°C, add 20kg of surface-activated inorganic nanomaterial aluminum oxide dro...

Embodiment 2

[0064] Step 1. Prepare the pre-emulsified mixture

[0065] Add 400 kg of soft water, 3.5 fluorocarbon anion emulsifiers, 10 kg of vinyl triethoxysiloxane, 5 kg of vinyl tris (2-methoxyethoxy) silane, and 5 kg of tetramethyltetraethylene into a 1000 L pre-emulsification kettle. Cyclotetrasiloxane 5kg, methacrylic acid 10kg, octyl acrylate 90kg, ethyl methacrylate 90kg, hexafluorofluoroacrylate monomer 50kg, heptafluorofluoroacrylate monomer 50kg, octafluorofluoroacrylate monomer 50kg, 50kg of nonafluorofluoroacrylate monomer, and 80kg of dodecafluorofluoroacrylate monomer were emulsified for half an hour to obtain a pre-emulsified mixture.

[0066] Step 2. Preparation of Nano-modified Fluorocarbon Emulsion

[0067] Take 1 / 5 of the pre-emulsified mixture prepared in step 1 and add it to a 1000L reactor to raise the temperature to 65°C, add 86.5kg of the initiator ammonium persulfate and water mixture (including 10kg of ammonium persulfate), and heat up to 88°C. After 0.5 hours...

Embodiment 3

[0072] Step 1. Prepare the pre-emulsified mixture

[0073] Add 400kg of soft water, 1kg of nonionic emulsifier, 1kg of anionic emulsifier, 1kg of fluorocarbon nonionic emulsifier, 0.5kg of fluorocarbon anionic emulsifier, and vinyl trimethoxy silicon containing unsaturated double bonds into a 1000L pre-emulsification kettle Oxane 5kg, vinyltriethoxysiloxane 5kg, vinyltris(2-methoxyethoxy)silane 5kg, tetramethyltetravinylcyclotetrasiloxane 5kg, acrylic monomer 100kg, Butyl acrylate monomer 70kg, fluoroacrylate hexafluoroacrylate monomer 30kg, fluoroacrylate heptafluoroacrylate monomer 30kg, fluoroacrylate octafluoroester monomer 40kg, fluoroacrylate nonafluoroacrylate monomer 30kg, fluoroacrylate monomer decafluoroacrylate 30kg, 20kg of undecafluoroacrylate monomer, and 20kg of dodecafluoroacrylate monomer were emulsified for half an hour to obtain a pre-emulsified mixture.

[0074] Step 2. Preparation of Nano-modified Fluorocarbon Emulsion

[0075] Take 1 / 5 of the pre-emulsi...

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Abstract

The present invention relates to a preparation method of hydrophilic fluorocarbon metal paint which includes the following process steps: 1. preparation of pre-emulsified mixture: add water, wedding agent, organosilicon autocopulation self-crosslinking monomer, acrylic monomers, acrylic ester monomers, fluorine acrylic ester monomer to the pre-emulsified reactor, and emulsifying to obtain pre-emulsified mixture; 2. preparation of nanometer modified fluorocarbon emulsion: take 1 / 5 of pre-emulsified mixture obtained in step 1; add it to reactor and elevate temperature; dropwise add mixture of evocating agent and water; then dropwise add the rest 4 / 5 pre-emulsified mixture to get nanometer modified fluorocarbon emulsion; 3. preparation of hydrophilic fluorocarbon metal paint: add mixture of nanometer modified fluorocarbon emulsion obtained in step 2, dispersants, wetting agents, anti-settle agent, propylene glycol, flatting agent, pigment, thickening agent and water to paint preparing reactor, stir and disperse for 10-15 min, filtrate and discharge. The hydrophilic fluorocarbon metal paint prepared through the method described in the invention has good stain resistance and long weather resistance, and has effect of the aluminum plate paint with film ventilating.

Description

(1) Technical field [0001] The invention relates to a preparation method of hydrophilic fluorocarbon metal paint. Hydrophilic fluorocarbon metallic paints are widely used in metal paints for aluminum-plastic panels, architectural coatings, industrial anti-corrosion coatings, plastic coatings and other fields. (2) Background technology [0002] Since 1964, the American Penwat Company successfully developed solvent-based fluorocarbon coatings based on polyvinylidene fluoride resin (PVDF), fluorocarbon coatings have experienced nearly 20 years of development, from solvent-based high-temperature baking to The film is improved to be cured at room temperature to form a film, but the solvent-based fluorocarbon coating contains more organic solvents, which pollutes the environment during production and construction, endangers people's health, and is inconvenient for construction and unsafe for storage and transportation. As people pay more attention to environmental protection, the...

Claims

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Application Information

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IPC IPC(8): C09D133/16C09D5/02
Inventor 徐国华李亚男
Owner JIANGSU GUOLIAN TECH
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