Graphene and organic fluorosiloxane waterborne polyurethane composite emulsion and preparation method thereof

A water-based polyurethane and composite emulsion technology, used in polyurea/polyurethane coatings, coatings, anti-corrosion coatings, etc., can solve problems such as dispersion and lamination, and achieve the effects of salt spray resistance, penetration resistance, and wide application

Active Publication Date: 2018-09-28
嘉兴烯成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many studies on graphene anti-corrosion coatings, due to the defects in the preparation process of graphene a

Method used

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  • Graphene and organic fluorosiloxane waterborne polyurethane composite emulsion and preparation method thereof
  • Graphene and organic fluorosiloxane waterborne polyurethane composite emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Preparation of Hydroxypolysiloxane Containing Fluorine and Epoxy

[0023] Add 100ml toluene, 50g methyl hydrogen silicone oil and 60g perfluorooctyl ethyl methacrylate (the carbon-carbon double bond molar content is 30% of the silicon-hydrogen bond content) successively in the nitrogen-protected four-necked flask, and the temperature is controlled at 100~120℃, add chloroplatinic acid / isopropanol solution dropwise under stirring, wherein the mass fraction of chloroplatinic acid is 0.01~0.02% of the sum of the mass of reactants. After the dropwise addition, react for 3~4 hours, then 75~ At 80°C, add 100g of glycidyl acrylate (the molar content of epoxy groups is 68% of the initial silicon-hydrogen bond content) and 2g of propenyl alcohol (the molar content of hydroxyl groups is 2% of the initial silicon-hydrogen bond content), and react at 90°C After 3-4 hours, the solvent and unreacted substances were removed under reduced pressure.

[0024] Preparation of Organofluoros...

Embodiment 2

[0030] Preparation of Hydroxypolysiloxane Containing Fluorine and Epoxy

[0031] Add 100ml of toluene, 50g of methyl hydrogen silicone oil and 45g of perfluorooctylethyl methacrylate (the carbon-carbon double bond molar content is 20% of the silicon-hydrogen bond content) successively in a nitrogen-protected four-necked flask, and the temperature is controlled at 100-120 degrees, add chloroplatinic acid / isopropanol solution dropwise under stirring, wherein the mass fraction of chloroplatinic acid is 0.01-0.02% of the sum of the mass of reactants. After the dropwise addition, react for 3-4 hours, then 75- At 80°C, add 120g of glycidyl acrylate (the molar content of the epoxy group is 78% of the initial silicon-hydrogen bond content) and 2g of propenyl alcohol (the molar content of the hydroxyl group is 2% of the initial silicon-hydrogen bond content), and react at 90°C After 3-4 hours, the solvent and unreacted substances were removed under reduced pressure.

[0032] Preparati...

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Abstract

The invention relates to the field of anticorrosive paint, in particular to environment-friendly and efficient graphene and organic fluorosiloxane waterborne polyurethane composite emulsion with a wide application range and high adhesive property. The composite emulsion is formed by performing mixing reaction on waterborne organic fluorosiloxane polyurethane emulsion and amino-functionalization graphene. Waterborne organic fluorosiloxane polyurethane is formed by compounding diisocyanate and polyether glycol serving as raw materials, hydroxyl silicone oil, containing fluorine and epoxy groups,serving as a modifier, dimethylolpropionic acid as hydrophilic monomer, and 1, 4-butanediol as a chain extender. The graphene is amination reduced graphene, the sheet diameter is 0.5 to 30um, the single layer ratio is greater than 85 percent, and the weight of the graphene is 0.1 to 5 percent of that of the waterborne polyurethane. The graphene and organic fluorosiloxane waterborne polyurethane composite emulsion has the characteristics of high corrosion resistance, high temperature and humidity resistance, acid rain resistance, salt spray resistance and high adhesive strength.

Description

technical field [0001] The invention relates to a graphene and organic fluorosilicon aqueous polyurethane composite emulsion and a preparation method thereof, in particular to the field of anti-corrosion coatings. Background technique [0002] At present, my country's economy is developing rapidly, and a large number of metal materials are used in transportation, construction, machinery, energy, chemical industry, infrastructure, railways and marine development and other fields. However, due to the influence of its own characteristics and environmental conditions, metal corrosion is inevitable, and the losses caused by corrosion and deterioration are quite serious, so the requirements for metal anti-corrosion treatment are very urgent. The use of anti-corrosion coatings is one of the current methods with low cost and excellent anti-corrosion effect, and it can better protect the metal surface in relatively harsh environments. [0003] The anti-corrosion coating protects the...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D5/08C09D7/62C08G18/66C08G18/48C08G18/61C08G18/34C08G18/32
CPCC08G18/3206C08G18/348C08G18/48C08G18/61C08G18/6692C09D5/08C09D5/18C09D175/08C09D7/62C09D7/70C08K9/04C08K7/00C08K3/042
Inventor 倪华钢熬善世秦存琪叶鹏
Owner 嘉兴烯成新材料有限公司
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