Preparation method of high-mechanical-durability environment-friendly super-hydrophobic coating layer

A super-hydrophobic coating and environmental protection 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: 2019-06-28
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 high-mechanical-durability environment-friendly super-hydrophobic coating layer
  • Preparation method of high-mechanical-durability environment-friendly super-hydrophobic coating layer
  • Preparation method of high-mechanical-durability environment-friendly super-hydrophobic coating layer

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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

The invention discloses a preparation method of a high-mechanical-durability environment-friendly super-hydrophobic coating layer, belonging to the technical field of preparation of coating layers. The preparation method comprises the steps of synthesizing waste edible oil fatty acid amide from filtrated and purified waste edible oil through aminolysis reaction, preparing a polyurethane prepolymerfrom waste edible oil fatty acid amide and toluene diisocynate by virtue of a one-step method, carrying out end capping on the polyurethane prepolymer by virtue of a double-end ammonia hydrocarbyl silicone oil so as to obtain modified polyurethane, mixing organic silicon modified polyurethane and hydrophobically treated silicon carbide particles, magnetically stirring, spraying the mixture to a substrate, and drying for solidification, so as to obtain the super-hydrophobic coating layer. The coating layer prepared by virtue of the method is low in cost and environment-friendly, and has good heat conductivity, wear resistance and self-cleaning performance, the dust pollution problem relevant to fins of a mining air cooler can be solved, and the heat exchange efficiency of the air cooler inthe use process is guaranteed.

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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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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