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Graphene-modified premixed emulsion and black conductive coating thereof

A technology of graphene modification and conductive coating, which is applied in the direction of coating, pigment slurry, etc., can solve the problems that are difficult to meet the needs of rapid development, and achieve strong antistatic ability, good temperature resistance and chemical resistance, and simple process Effect

Inactive Publication Date: 2019-04-16
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above invention is an additive conductive coating, which has certain limitations and is difficult to meet the needs of rapid development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of graphene modified water-based silicon acrylic emulsion A, its preparation process is as follows:

[0031] 1) In a four-port reactor equipped with a thermometer, condenser, and agitator, add 3.5 parts of dimethylolpropionic acid and 2.0 parts of special graphene according to the weight of the formula, raise the temperature to 70-75°C, and then slowly drop Add 7.5 parts of isophorone diisocyanate, stir and react for 0.5-1.0 hours, add 0.05 parts of dibutyltin dilaurate in the formula, raise the temperature to 85-88°C and react for 2-2.5 hours, during the reaction, add 3.6 parts of butyl acrylate, methyl Adjust the viscosity with 6.0 parts of methyl acrylate, lower the temperature to 80°C, add 1.8 parts of hydroxyethyl acrylate, continue the reaction for 1.5 hours, and measure the NCO value until it is consistent with the design value;

[0032] 2) Continue to stir to reduce the temperature of the reactant to below 45°C, slowly add 3.6 parts of triethylamine dropwis...

Embodiment 2

[0035] A kind of graphene modified water-based silicon acrylic emulsion B, its preparation process is as follows:

[0036] 1) In a four-port reactor equipped with a thermometer, condenser, and agitator, add 4.0 parts of dimethylolpropionic acid and 2.3 parts of special graphene according to the weight of the formula, raise the temperature to 70-75°C, and then slowly drop Add 7.6 parts of toluene diisocyanate, stir and react for 0.5-1.0 hours, add 0.05 parts of dibutyltin dilaurate in the formula, raise the temperature to 85-88°C and react for 2-2.5 hours, during the reaction, add 4.2 parts of stearyl acrylate, methyl acrylate 7.0 parts to adjust the viscosity, lower the temperature to 80°C, add 2.0 parts of hydroxyethyl acrylate, continue the reaction for 1.5 hours, and measure the NCO value until it is consistent with the design value;

[0037] 2) Continue to stir to reduce the temperature of the reactant to below 45°C, slowly add 4.2 parts of triethylamine dropwise under hig...

Embodiment 3

[0040] A kind of fluorine-containing polyurethane modified acrylic water-based resin C, its preparation process is as follows:

[0041] a. In a four-port reactor equipped with a thermometer, condenser, and agitator, add 3.0 parts of butanediol, 1.5 parts of trimethylolpropane, 7.0 parts of polytetrahydrofuran polyol, dimethylol 2.6 parts of propionic acid, heated to 95-110°C for vacuum dehydration for 1.5-2.0 hours;

[0042] b. Cool down to 60~70℃, 10.0 parts of hexamethylene diisocyanate, pass through N 2 , then dropwise add 0.05 parts of dibutyltin dilaurate in the formula, raise the temperature to 80-82° C. and react for 1-1.5 hours to obtain the hydrophilic polyurethane prepolymer;

[0043] c. Prepare 9.0 parts of methyl methacrylate and 3.0 parts of butyl methacrylate in advance, take 6.0 parts of the acrylate mixture and add it to the hydrophilic polyurethane prepolymer until the viscosity is moderate, cool down to 70°C, add 2.0 parts of hydroxyethyl acrylate, continue...

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Abstract

The invention relates to a graphene-modified premixed emulsion and a black conductive coating thereof. The black conductive coating is composed of a graphene-modified waterborne silicone acrylic emulsion, fluorinated polyurethane modified acrylic waterborne resin, a waterborne acrylic emulsion, nanometer carbon black color paste, a polyacrylate sodium phosphate dispersing agent, a flatting agent,a defoaming agent, a multifunctional auxiliary, a wetting agent and deionized water; the graphene-modified waterborne silicone acrylic emulsion is prepared from an acrylate hard monomer, an acrylate soft monomer, styrene, dimethylolpropionic acid, organic silicone, polyisocyanates, special graphene, hydroxyethyl acrylate and a neutralizer through a reaction. The prepared graphene-modified premixedemulsion and the black conductive coating thereof have the advantages that the surface tension is small, the dirt resistance is strong, the waterproofness is good, the crosslinking density is high, the temperature resistance and the chemical resistance are good, the corrosion resistance is good, the conductivity is good, and the anti-static property is great, and the excellent effects of resisting corrosion and static electricity can be effectively achieved.

Description

technical field [0001] The invention relates to the preparation of a water-based premixed emulsion and a black conductive paint used on various surfaces such as cement concrete, metal, wood, etc., and belongs to the technical field of synthetic resin emulsion and water-based functional paint. Background technique [0002] With the rapid development of the electronics industry, electronic products such as various household appliances, office computers, instruments and equipment have been widely popularized and applied. However, while their work brings great convenience to people, it also releases a large amount of electromagnetic radiation, which endangers people's health. In addition, electromagnetic radiation is also extremely harmful to electronic products themselves. On the one hand, plastic is widely used as the casing of electronic products due to its advantages of low cost, light weight and easy processing, but it is almost completely transparent to electromagnetic wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/61C09D7/65C09D17/00C08F2/44C08F283/00C08G18/32C08G18/34C08G18/38C08G18/48C08G18/67C08G18/73C08G18/75C08G18/76C08G18/66
CPCC09D7/65C09D7/67C09D17/005C09D151/08C08F2/44C08F283/008C08G18/0823C08G18/3206C08G18/348C08G18/3802C08G18/4833C08G18/4854C08G18/672C08G18/73C08G18/755C08G18/7614C09D7/61C08L2205/035C08K2201/011C08K2201/001C08G18/6692C08L75/08C08L33/00C08L43/02C08L75/04C08K3/042C08K3/04C08F220/1818C08F230/08C08F220/1804
Inventor 张武康伦国姚东生许钧强阳京辉
Owner UNION FOSHAN CHEM
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