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Super-hydrophobic polyurethane/ oxide nano particle hybrid coating material and preparation method thereof

A nanoparticle and coating material technology, which is applied in the field of superhydrophobic polyurethane/oxide nanoparticle hybrid coating and its preparation, can solve the problems of complex process, incapable of large-scale production, high production cost, etc., and achieve good chemical stability , low cost, low dielectric constant effect

Active Publication Date: 2013-02-06
JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention proposes a kind of superhydrophobic polyurethane / oxide nanoparticle hybrid coating material, another object of the present invention also provides the preparation method of above-mentioned material, solves the many needs in the current preparation transparent superhydrophobic coating Perfluorosilane modification with low surface energy, high production cost, complicated process, and inability to scale up production

Method used

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  • Super-hydrophobic polyurethane/ oxide nano particle hybrid coating material and preparation method thereof
  • Super-hydrophobic polyurethane/ oxide nano particle hybrid coating material and preparation method thereof
  • Super-hydrophobic polyurethane/ oxide nano particle hybrid coating material and preparation method thereof

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Embodiment 1

[0038] 1. Nano silica pretreatment

[0039] Take by weighing 3g precipitation method nano silicon dioxide (average particle diameter 50nm, specific surface area 150m 2 / g), after drying in an oven at 100°C for 2 hours, place 30g of toluene in a 250ml three-necked flask for ultrasonic dispersion; heat up to 80°C, and add 6.4g of γ-glycidyl etheroxypropyl trimethoxyl hydrolyzed by 20g of toluene dropwise Base silane, dropwise for 30 minutes, continue to stir for 30 minutes, heat up to 110°C and reflux for 10 hours to make it fully react; finally wash the product with absolute ethanol 4 times and centrifuge, and dry in a vacuum oven at 110°C Modified silicon dioxide was obtained in 17 hours and placed in a desiccator for subsequent use.

[0040] 2. Preparation of superhydrophobic silica:

[0041] Take 1.5g of the above-mentioned treated modified silicon dioxide and ultrasonically disperse it in 75g of toluene to form a silicon dioxide solution; then ultrasonically disperse 2.25...

Embodiment 2

[0048] 1. Nano silica pretreatment

[0049] Take by weighing 3g precipitation method nano silicon dioxide (average particle diameter 50nm, specific surface area 150m 2 / g), dried in an oven at 100°C for 2 hours, placed in a 500ml three-necked flask with 150g toluene and ultrasonically dispersed until evenly dispersed; heated to 70°C, and added dropwise 15g of γ-glycidyl etheroxypropyl trimethyl that was hydrolyzed by 20g of toluene Oxysilane, dropwise for 30 minutes, continue to stir for 30 minutes, heat up to 110°C and reflux for 5 hours to make it fully react; finally wash the product 4 times with absolute ethanol and centrifuge, and put it in a vacuum oven at 110°C Dry for 17 hours to obtain modified silica, which is placed in a desiccator for subsequent use.

[0050] 2. Preparation of superhydrophobic silica:

[0051] Take 0.2g of the above-mentioned treated modified silicon dioxide and ultrasonically disperse it in 15g of toluene to form a silicon dioxide solution; then...

Embodiment 3

[0058] 1. Nano silica pretreatment

[0059] Take by weighing 3g fumed nano silicon dioxide (average particle diameter 30nm, specific surface area 380m 2 / g), after drying in an oven at 100°C for 2 hours, place 90g of N,N-dimethylformamide in a 250ml three-neck flask and ultrasonically disperse evenly; heat up to 90°C, and add dropwise 6.4g of γ -Glycidyl etheroxypropyltrimethoxysilane, dropwise for 30 minutes, continue to stir for 30 minutes, then raise the temperature to 120°C and reflux for 10 hours to make it fully react; finally wash the product 5 times with absolute ethanol and centrifuge , dried in a vacuum oven at 110° C. for 17 hours to obtain modified silica, and placed in a desiccator for use.

[0060] 2. Preparation of superhydrophobic silica:

[0061] Take 0.2g of the above-mentioned treated modified silica and ultrasonically disperse it in 10g of toluene to form a silica solution; then ultrasonically disperse 0.3g of octadecylamide in a mixture of 8g of N,N-dime...

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Abstract

The invention relates to a super-hydrophobic polyurethane / oxide nano particle hybrid coating and a preparation method thereof. The super-hydrophobic coating is prepared by oxide nano particles, silane coupling agent and polyurethane which have wide material source and are easily obtained through a self-assembly method, and has the contact angle of 140-168 degrees and the rolling angle of 1-20 degrees as well as good visible light permeability. The invention solves the problems that the currently prepared transparent super-hydrophobic coating needs extremely low surface energy perfluorinated silane modification, has high production cost and complicated technique, and can not realize large-scale production. The method has simple technique, easily obtained raw material and low cost; and the prepared super-hydrophobic coating can be taken as a dustproof and antifogging protective coating of the surface of solids such as glass and the like, and a waterproof insulating layer used in a micro-electronic device, a sensor and the like.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic coating preparation, and more specifically relates to a superhydrophobic polyurethane / oxide nanoparticle hybrid coating and a preparation method thereof. Background technique [0002] Superhydrophobic (surface static contact angle greater than 150°) coatings have the properties of waterproof, anti-pollution, anti-oxidation, and self-cleaning, so they have attracted people's attention. The transparent super-hydrophobic coating not only has the properties of a super-hydrophobic surface but also has good visible light permeability. It is used for outdoor optoelectronics and display equipment, self-cleaning glass for high-rise buildings, as windshields for cars and airplanes, etc. It has great application value. [0003] At present, there are not many studies on transparent superhydrophobic coatings, and the preparation methods mainly include sol-gel method, phase separation method, self-ass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/12C09D5/00
Inventor 陈苏王丽芳杨胜洋陈莉
Owner JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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