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Nano TiO2 powder super-hydrophobic coating material as well as preparation method and application thereof

A super-hydrophobic coating and powder technology, applied in polyurea/polyurethane coatings, coatings, anti-corrosion coatings, etc., can solve problems such as environmental hazards, high cost of fluorine-containing substances, and poor hydrophobicity

Inactive Publication Date: 2020-10-30
佛山市南海区里水镇经济促进局 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN107629653A discloses an outer protective coating for crawler tracks, which can greatly improve the wear resistance of track tracks, but its hydrophobicity is not very good, and the tri-n-butylamine used in it is highly toxic, which brings inconvenience to the preparation. bad impact on the environment
In order to improve the hydrophobicity of coatings, some researchers use fluorine-containing substances to reduce the surface energy of materials, but fluorine-containing substances are expensive and have certain harm to the environment, or use fluorine-free polymer coatings containing silicon-oxygen bonds , but there are certain problems in its binding force, and it is easy to peel off during exercise

Method used

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  • Nano TiO2 powder super-hydrophobic coating material as well as preparation method and application thereof
  • Nano TiO2 powder super-hydrophobic coating material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation step of superhydrophobic coating material comprises the following:

[0024] 8 parts nano-TiO 2 The powder was added to 5 times the amount of ethanol-water mixture with a volume ratio of 1:1, ultrasonically dispersed and then stirred for 1 h, and the temperature was kept at 60°C. Add a small amount of triethylamine, then slowly add 1 part of ethanol solution of silane coupling agent dropwise, and fully react for 2 hours under rapid stirring conditions. After the reaction is completed, age at room temperature, filter with suction, wash with ethanol, and dry at 80°C to obtain the improved Nano-TiO 2 powder.

[0025] Add 80 parts of polyurethane and 10 parts of terpene resin to 80 parts of ethanol and place in a high-energy ball mill for 4-6 hours to obtain superfine suspension A. The above modified nano-TiO 2 The powder, 0.6 part of stearic acid, 1 part of zinc stearate, 0.3 part of antioxidant 1024 and 0.5 part of polyvinylpyrrolidone were sequentially...

Embodiment 2

[0028] The preparation step of superhydrophobic coating material comprises the following:

[0029] 14 parts nano-TiO 2 The powder was added to 5 times the amount of ethanol-water mixture with a volume ratio of 1:1, ultrasonically dispersed and then stirred for 2 hours, and the temperature was kept at 70°C. Add a small amount of triethylamine, then slowly add 2 parts of silane coupling agent ethanol solution dropwise, fully react for 2 hours under rapid stirring conditions, after the reaction is completed, age at room temperature, filter with suction, wash with ethanol, and dry at 80°C to obtain the modified Nano-TiO 2 powder.

[0030] Add 90 parts of polyurethane and 12 parts of terpene resin to 80 parts of ethanol and place in a high-energy ball mill for 4-6 hours to obtain ultrafine suspension A. The above modified nano-TiO 2 The powder, 0.9 parts of stearic acid, 1.5 parts of zinc stearate, 0.6 parts of antioxidant 1024 and 0.8 parts of polyvinylpyrrolidone were sequent...

Embodiment 3

[0033] The preparation step of superhydrophobic coating material comprises the following:

[0034] 18 parts nano-TiO 2 The powder was added to 5 times the amount of ethanol-water mixture with a volume ratio of 1:1, ultrasonically dispersed and then stirred for 2 hours, and the temperature was kept at 80°C. Add a small amount of triethylamine, then slowly add 2.5 parts of silane coupling agent ethanol solution dropwise, fully react for 3 hours under rapid stirring conditions, after the reaction is completed, age at room temperature, filter with suction, wash with ethanol, and dry at 80°C to obtain the improved Nano-TiO 2 powder.

[0035] 100 parts of polyurethane and 14 parts of terpene resin were added to 80 parts of ethanol and placed in a high-energy ball mill for 5 hours to obtain ultrafine suspension A. The above modified nano-TiO 2 The powder, 1.2 parts of stearic acid, 1.5 parts of zinc stearate, 0.8 parts of antioxidant 1024 and 1.0 part of polyvinylpyrrolidone were...

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Abstract

The invention discloses a nano TiO2 powder super-hydrophobic coating material as well as a preparation method and application thereof. The super-hydrophobic coating material is prepared from the following components in parts by mass: 120 parts of ethanol, 80 to 100 parts of polyurethane, 10 to 16 parts of terpene resin, 8 to 20 parts of nano TiO2 powder, 1 to 3 parts of a silane coupling agent ethanol solution, 0.6 to 1.6 parts of stearic acid, 1 to 2 parts of zinc stearate, 0.3 to 0.8 part of an antioxidant and 0.5 to 1.5 parts of polyvinylpyrrolidone.

Description

technical field [0001] The invention relates to the field of superhydrophobic coating materials, especially a kind of nano TiO 2 Powder superhydrophobic coating material and its preparation method and application. Background technique [0002] With the needs of the development of human society and the progress of science and technology, the scale of underwater engineering is getting larger and larger, and more and more needs to be used in the investigation and detection of underwater resources, rescue and lifesaving, ocean development, and hull surface cleaning operations. to underwater robots. Underwater robots work underwater for a long time, and the relevant components will be eroded by seawater / sewage. The salt in seawater will accelerate the aging or corrosion of the crawler tracks. Clean the crawler tracks in time after use in such an environment; It will rub against sand, gravel, mud or other foreign objects in water to cause wear. In order to minimize the loss cau...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/62C09D5/08
CPCC08K2003/2241C08K2201/011C08L2205/03C09D5/08C09D175/04C09D7/62C08L45/00C08K13/06C08K9/06C08K3/22
Inventor 曾晖王义珍
Owner 佛山市南海区里水镇经济促进局
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