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Self-cleaning nano protective liquid used for glass and preparation method

A protective liquid and self-cleaning technology, which is applied in the coating and other directions, can solve the problems of insufficient hydrophobic effect, large amount of fluorine-containing monomer, troublesome preparation process, etc., to reduce surface current conduction, good water and oil repellency, The effect of excellent hydrophobic and oleophobic properties

Inactive Publication Date: 2015-12-02
王金书
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] U.S. Patent US6068911 discloses that a resin containing non-reactive nanoparticles and fluoropolymers is cured by UV light to prepare a superhydrophobic coating with a rough surface. The volatile solvent can bring the low surface energy fluoropolymer to the surface, but UV light is required It is used to cure the coating, the preparation process is cumbersome, and it is greatly restricted in use; patent CN101029137A discloses a fluorine-containing POSS acrylate block copolymer resin and its synthesis method, which is synthesized by atom transfer radical polymerization (ATRP) , the contact angle between the coating and water after film formation is 85-120°, the process is cumbersome and the effect is limited; both CN103012700A and CN102775567A adopt the method of reversible addition-fragmentation chain transfer radical polymerization (RAFT) to construct low surface energy, and prepare The process is relatively complicated, and the hydrophobic effect is not significant enough; patent CN101619116 discloses a preparation method of thermoplastic fluorine-containing acrylate resin, but it uses fluorine-containing acrylate monomers, methyl methacrylate monomers and other functional monomers for solution Copolymerization, the weather resistance and stain resistance of the coating film are improved, but the weight of the fluorine-containing acrylate monomer is 15-25 parts, the dosage is relatively large, and the cost of the fluorine-containing polymer is high. In patents such as CN1322775A and CN102617783A All have proposed the method for preparing fluorine-containing acrylic resin coating, these methods also have the problem that the amount of fluorine-containing monomer is large

Method used

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  • Self-cleaning nano protective liquid used for glass and preparation method
  • Self-cleaning nano protective liquid used for glass and preparation method
  • Self-cleaning nano protective liquid used for glass and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Treat silica nanoparticles with sodium borohydride aqueous solution to make the surface rough: mix 3gSiO 2 Nanoparticles and 2.5g polyvinylpyrrolidone (PVP) were dispersed in 100mL water, 100W ultrasonic dispersion was performed for 1h, and 6gNaBH was added 4 Stir vigorously at the same time, then stir at room temperature for 0.5h, stir at 50°C for 5h, centrifugally disperse, wash with distilled water and ethanol, and dry and store for later use;

[0044] (2) Add 15ml of toluene solvent in a four-necked flask equipped with a thermometer, nitrogen gas flow, reflux condenser, and dropping funnel, take by weighing the initiator dibenzoyl peroxide BPO0.08g, add (1) after processing 1.00g of silicon dioxide particles, after heating up to 85°C, the stirring speed is 350r / min, and nitrogen is blown;

[0045] (3) Add a certain ratio of monomer mixture (methyl methacrylate 4.50g, butyl acrylate 3.50g, acrylic acid 0.50g, styrene 1.50g) dropwise within a certain period of ti...

Embodiment 2

[0051] (1) add the toluene solvent of 15ml in the four-necked flask that thermometer, logical nitrogen, reflux condenser, dropping funnel are equipped with, take by weighing initiator azobisisobutyronitrile AIBN0.08g, add step in embodiment 1 ( 1) 1.00g of the treated silica particles is heated up to 80°C, the stirring rate is 350r / min, and nitrogen is blown;

[0052] (2) Add a certain ratio of monomer mixture (methyl methacrylate 5.00g, butyl acrylate 3.50g, acrylic acid 0.50g, styrene 1.00g) dropwise within a certain period of time using a constant pressure dropping funnel Into the reaction flask, insulation reaction 0.5h;

[0053] (3) Use a constant pressure dropping funnel to add 0.50 g of hexafluorobutyl methacrylate, and add 0.02 g of initiator, and continue the reaction for 3 hours to obtain SiO with a certain molecular weight. 2 - Fluorine-modified acrylic resin is the prepared nano protective liquid, which is a colorless and transparent liquid;

[0054] (4) The prot...

Embodiment 3

[0057] (1) Add 15ml of toluene solvent into a four-necked flask equipped with a thermometer, nitrogen gas, reflux condenser, and dropping funnel, weigh the initiator azobisisobutyronitrile AIBN0.08g, heat up to 80°C, and stir The speed is 280r / min, and nitrogen gas is passed;

[0058] (2) Add a certain ratio of monomer mixture (methyl methacrylate 4.50g, butyl acrylate 3.00g, acrylic acid 0.40g, styrene 2.10g) dropwise within a certain period of time using a constant pressure dropping funnel Into the reaction flask, insulation reaction 0.5h;

[0059] (3) Use a constant pressure dropping funnel to add 0.60 g of hexafluorobutyl methacrylate, and add 0.02 g of initiator, and continue the reaction for 3 hours to obtain a fluorine-modified acrylic resin with a certain molecular weight. The solvent is evaporated by rotary evaporation Obtain solid resin after going out;

[0060] (4) get the surface rough SiO obtained in (1) in embodiment 1 2 1.00 g of nanoparticles is dispersed in...

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Abstract

The present invention relates to a self-cleaning nano protective liquid used for glass and a preparation method. According to the self-cleaning nano protective liquid used for glass, a thin film coating formed by the nano protective liquid is provided with a similar structure of a lotus leaf surface in nature, wherein the structure is a nano-micro composite layer structure, and the coating is a colorless transparent thin film coating, with a thickness of 400-1000nm. The coating provided by the present invention has superior properties of water-proofing, oil-proofing, anti-fouling, anti-fogging, moisture-proofing, and the like. A contact angle of the coating and water is 140-155 DEG (a droplet volume is measured as 4 mu L), a roll angle of a water droplet on a coating surface is less than 5 DEG (a droplet volume is measured as 4 mu L). The water droplet existed on the the coating surface is freely rollably, meanwhile contaminations of dust and the like are removed, and thereby achieving the superior properties of anti-fogging, anti-fouling and the like.

Description

(1) Technical field [0001] The invention belongs to the technical field of paint processing, and in particular relates to a superhydrophobic self-cleaning nano protective liquid for glass and a preparation method thereof. (2) Background technology [0002] Glass is an important material for modern life and decoration, and it is mainly kept clean and transparent by manual cleaning. For the glass curtain wall used in high-rise buildings, dirty air, rainwater and other pollutants will make it lose its luster, and the light transmittance will decrease. Using conventional cleaning methods, the cleaning cost is high and there are potential safety hazards; car windshields and rearview mirrors in rainy days It will form a water film, which may lead to car accidents; the temperature is very low in winter, and the car glass will produce frost. It is very inconvenient to clear the frost by hand or by heating before going on the road; mirrors and glasses are often fogged in life, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D133/08C09D133/02C09D7/12C08F220/14C08F220/18C08F220/22C08F220/24C08F220/06C08F212/08
Inventor 刘玉婷楚延锋常贵娟冯汝明侯红霞王瑛陈双喜王胜伟
Owner 王金书
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