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Super-hydrophobic coating with flame-retardant effect and preparation method thereof

A technology of super-hydrophobic coatings and raw materials, which is applied in the direction of fire-resistant coatings and coatings, and can solve the problems of limited scale production of super-hydrophobic coatings, batch transportation in construction environments, hidden safety hazards of super-hydrophobic coatings, and hidden safety hazards of super-hydrophobic coatings. To achieve the effect of improving hydrophobic performance, improving hydrophobicity, and increasing water contact angle

Pending Publication Date: 2020-05-08
汤彪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the currently used superhydrophobic coatings all use flammable organic solvents such as ethanol, isopropanol, petroleum hydrocarbons, acetone, etc. as dispersants or solubilizers, making superhydrophobic coatings in the process of preparation, production, transportation, etc. There are large safety hazards in the process, which greatly limits the large-scale production, construction environment and batch transportation of superhydrophobic coatings.
Secondly, superhydrophobic coating additives often contain some combustible particles, such as carbon nanotubes, organic powder, etc., which will also cause safety hazards in superhydrophobic coatings in practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A superhydrophobic coating with flame retardant effect, mainly comprising: 30 parts of BF-400B type silicon acrylic emulsion, 5 parts of modified graphene, 3 parts of polyethylene glycol 200 and 6 parts of flame retardant micro ball.

[0034] A method for preparing a superhydrophobic coating with a flame-retardant effect, the superhydrophobic coating with a flame-retardant effect mainly includes the following preparation steps:

[0035] (1) Mix dextran and dimethyl sulfoxide in a beaker at a mass ratio of 1:250, and add ethylenediamine, which is 1 times the mass of dextran, to the beaker. After stirring and mixing for 30 minutes under the condition of min, the dextran solution was obtained. The dextran solution and the pretreated cholesterol were mixed in the flask at a mass ratio of 250:1, and the addition rate of the pretreated cholesterol was controlled to be 3mL / min. Nitrogen was passed into the medium at a rate of 25mL / min, and the reaction was stirred for 7 hours...

Embodiment 2

[0043] A superhydrophobic coating with flame retardant effect, mainly comprising: 30 parts of BF-400B type silicon acrylic emulsion, 5 parts of modified graphene, 3 parts of polyethylene glycol 200 and 6 parts of flame retardant micro ball.

[0044] A method for preparing a superhydrophobic coating with a flame-retardant effect, the superhydrophobic coating with a flame-retardant effect mainly includes the following preparation steps:

[0045] (1) Mix dextran and polylactic acid in a blender at a mass ratio of 1:1, and add dimethyl sulfoxide 80 times the mass of dextran to the blender at a temperature of 40°C and a speed of 300r After stirring and mixing for 30 minutes under the condition of 1 / min, the mixed dispersion was obtained, and the mixed dispersion was placed in a dialysis bag with a molecular weight cut-off of 1400, and placed in water for dialysis for 4 hours, then the dialysis bag was taken out and placed in a dialysis bag with a mass fraction of 2%. After dialysi...

Embodiment 3

[0051] A superhydrophobic coating with a flame-retardant effect, mainly comprising: 30 parts of BF-400B type silicone acrylic emulsion, 5 parts of graphene, 3 parts of polyethylene glycol 200 and 6 parts of flame-retardant microspheres in parts by weight.

[0052] A method for preparing a superhydrophobic coating with a flame-retardant effect, the superhydrophobic coating with a flame-retardant effect mainly includes the following preparation steps:

[0053] (1) Mix dextran and dimethyl sulfoxide in a beaker at a mass ratio of 1:250, and add ethylenediamine, which is 1 times the mass of dextran, to the beaker. After stirring and mixing for 30 minutes under the condition of min, the dextran solution was obtained. The dextran solution and the pretreated cholesterol were mixed in the flask at a mass ratio of 250:1, and the addition rate of the pretreated cholesterol was controlled to be 3mL / min. Nitrogen was passed into the medium at a rate of 25mL / min, and the reaction was stirr...

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Abstract

The invention discloses a super-hydrophobic coating with a flame-retardant effect and a preparation method thereof, and relates to the technical field of high polymer materials. The preparation methodcomprises the steps: treating cholesterol with succinic anhydride and thionyl chloride, to obtain pretreated cholesterol, carrying out a mixing reaction on the pretreated cholesterol with glucan, toobtain modified glucan; mixing the modified glucan with polylactic acid; dialyzing in water, a gadolinium chloride solution and an ammonium polyphosphate solution in sequence to obtain flame-retardantmicrospheres, calcining the graphene oxide and silicon dioxide together, and etching with hydrofluoric acid to obtain modified graphene; and mixing and grinding the modified graphene and modified glucan, and mixing with a silicone acrylic emulsion and a dispersing agent to obtain the super-hydrophobic coating with flame-retardant effect. The prepared super-hydrophobic coating with the flame-retardant effect has excellent flame retardance and hydrophobicity.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a superhydrophobic coating with a flame-retardant effect and a preparation method thereof. Background technique [0002] With the continuous development and utilization of superhydrophobic material technology, in recent years, the following superhydrophobic surface preparation technologies have been developed: wet / reactive ion etching, imprinting, machining, laser ablation, chemical / electrochemical oxidation, chemical / Electrochemical deposition, sol-gel, hydrothermal synthesis, thermal spraying, etc. However, expensive equipment and harsh process conditions make these technologies for preparing superhydrophobic coatings / thin films difficult for large-scale industrial production, and there is a risk of being easily damaged. In order to solve these problems, the technology of uniformly spraying the prepared superhydrophobic coating on the surface of the substrate to fo...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D5/18C09D7/62
CPCC08K2003/323C09D5/185C09D143/04C09D7/62C09D7/70C08K13/06C08K9/12C08K3/32C08K9/02C08K7/00C08K3/042
Inventor 汤彪
Owner 汤彪
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