Preparation method of an environmentally friendly superhydrophobic coating with high mechanical durability

A super-hydrophobic coating, durable technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as poor mechanical properties, and achieve the effect of reducing pollution, low price and environmental protection

Active Publication Date: 2020-09-04
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the main technical problem of the poor mechanical properties of the superhydrophobic coating in the above-mentioned prior art, the present invention proposes a method for preparing an environmentally friendly superhydrophobic coating with high mechanical durability. Excellent mechanical durability

Method used

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  • Preparation method of an environmentally friendly superhydrophobic coating with high mechanical durability
  • Preparation method of an environmentally friendly superhydrophobic coating with high mechanical durability
  • Preparation method of an environmentally friendly superhydrophobic coating with high mechanical durability

Examples

Experimental program
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Effect test

Embodiment 1

[0047]Step 1, the preparation of waste edible oil fatty acid amide, first place sodium methoxide (0.007mol) and diethanolamine (0.32mol) in a three-neck round bottom flask, turn on the heating switch and magnetic stirring device, heat and stir at 80°C for 20 minutes, then purified waste cooking oil (0.1 mol) was added dropwise over 60 minutes. After the purified waste edible oil is completely added, the reaction temperature is raised to 120° C. and the stirring reaction is continued at this temperature for 3 hours to obtain the waste edible oil fatty amide;

[0048] Step 2, the preparation of the polyurethane prepolymer, using waste edible oil fatty amide and toluene diisocyanate as raw materials, and adopting a one-step method to prepare the polyurethane prepolymer. Dissolving waste edible oil fatty amide in acetone under room temperature conditions to obtain a 50 wt% waste edible oil fatty amide solution. Add the fatty amide solution of waste cooking oil to toluene diisocya...

Embodiment 2

[0058] Step 1, the preparation of waste edible oil fatty acid amide, first place sodium methoxide (0.007mol) and diethanolamine (0.32mol) in a three-neck round bottom flask, turn on the heating switch and magnetic stirring device, heat and stir at 80°C for 20 minutes, then purified waste cooking oil (0.1 mol) was added dropwise over 60 minutes. After the purified waste edible oil is completely added, the reaction temperature is raised to 120° C. and the stirring reaction is continued at this temperature for 3 hours to obtain the waste edible oil fatty amide;

[0059] Step 2, the preparation of the polyurethane prepolymer, using waste edible oil fatty amide and toluene diisocyanate as raw materials, and adopting a one-step method to prepare the polyurethane prepolymer. Dissolving waste edible oil fatty amide in acetone under room temperature conditions to obtain a 50 wt% waste edible oil fatty amide solution. Add the fatty amide solution of waste cooking oil to toluene diisocy...

Embodiment 3

[0064] Step 1, the preparation of waste edible oil fatty acid amide, first place sodium methoxide (0.007mol) and diethanolamine (0.32mol) in a three-neck round bottom flask, turn on the heating switch and magnetic stirring device, heat and stir at 80°C for 20 minutes, then purified waste cooking oil (0.1 mol) was added dropwise over 60 minutes. After the purified waste edible oil is completely added, the reaction temperature is raised to 120° C. and the stirring reaction is continued at this temperature for 3 hours to obtain the waste edible oil fatty amide;

[0065] Step 2, the preparation of the polyurethane prepolymer, using waste edible oil fatty amide and toluene diisocyanate as raw materials, and adopting a one-step method to prepare the polyurethane prepolymer. Dissolving waste edible oil fatty amide in acetone under room temperature conditions to obtain a 50 wt% waste edible oil fatty amide solution. Add the fatty amide solution of waste cooking oil to toluene diisocy...

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Abstract

A preparation method for an environmentally friendly super-hydrophobic coating with high mechanical durability, comprising the following steps: using filtered and purified waste edible oil as a raw material, synthesising the waste edible oil fatty amides by means of an amino decomposition reaction; using waste edible oil fatty amides and toluene diisocyanate as raw materials, employing a one-step process to prepare a polyurethane prepolymer; capping the polyurethane polymer by means of a double-ended ammonia-based silicone oil to obtain modified polyurethane; mixing the silicone-modified polyurethane with hydrophobically treated silicon carbide particles and, after magnetic stirring, spraying same onto a substrate, and drying and curing to obtain the super-hydrophobic coating.

Description

technical field [0001] The invention relates to the technical field of coating preparation, in particular to a preparation method of an environment-friendly super-hydrophobic coating. Background technique [0002] Due to long-term mining, shallow coal seams have been exhausted, and most coal mines have to mine deep coal seams. As mining depth increases, so does the temperature of the surrounding rock, leading to an increasing risk of heat damage in mining operations. For high-temperature mines, under normal circumstances, mine ventilation alone cannot solve the problem of high-temperature heat damage. In order to ensure the normal work of employees, corresponding cooling systems must be built in most cases. With the technological innovation, air cooler cooling technology has been widely used in the coal mining industry and has become one of the main means to reduce the high temperature of mines. Mine air coolers are generally arranged in the underground mining face or in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/62C08G18/65C08G18/61C08G18/32C08G18/10
CPCC08G18/10C08G18/32C08G18/61C08G18/65C09D7/62C09D175/04
Inventor 苗徳俊程英模蒋家琛孔令晓徐毓名
Owner SHANDONG UNIV OF SCI & TECH
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