Water repellent agent and preparation method of water repellent agent as well as hydrophobic glass and preparation method of hydrophobic glass

A technology of hydrophobic glass and hydrophobic agent, which is applied in the field of hydrophobic glass and its preparation, hydrophobic agent and its preparation, which can solve problems such as non-slip, adhesion, and large sliding angle, so as to maintain smoothness, good hydrophobic performance, and reduce sliding corner effect

Active Publication Date: 2012-10-10
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, glass rainproof coating products for car maintenance also appear on the market, but at present these products have the disadvantage of too large sliding angle, that is, tiny water droplets falling on the surface of the film layer cannot slide off quickly, but will adhere to the film layer Surface, even sitting under certain wind force and vibration still can't slip off
Especially in light rain, the water droplets formed by light raindrops falling on the glass surface are very small, and the tiny water droplets adhere to the glass surface and are more difficult to slip off, seriously affecting the driver's vision clarity, so that the hydrophobic film cannot solve the accumulation of water droplets on the glass surface blurred vision

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a method for preparing a hydrophobic agent for glass, comprising the following steps:

[0038] (1) Add 1 part by mass of n-C 18 h 37 SiCl 3 A 30% hydrochloric acid solution containing 1 mass part of HCl and 3 mass parts of water (including water in the hydrochloric acid solution) were added to 93 mass parts of ethyl acetate solvent and stirred at 30°C for 5 hours get the mixture;

[0039] (2) Add 3 parts by mass of N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane dropwise to the mixture, and continue stirring for 12 hours after the addition is completed to obtain a hydrophobic agent.

[0040] above n-C 18 h 37 SiCl 3 It is a flexible long-chain low surface energy substance, which is used to prepare glass hydrophobic agent. The hydrophobic agent for glass can greatly reduce the sliding angle of the glass surface, and even tiny water droplets can easily slide off the glass surface, greatly improving the clarity of the driver's vision. ...

Embodiment 2

[0051] This embodiment provides a method for preparing a hydrophobic agent for glass, comprising the following steps:

[0052] (1) Add 5 parts by mass of CF 3 (CF 2 ) 7 (CH 2 ) 2 Si(NH 2 ) 3 , containing 2 parts by mass of H 2 SO 4 A sulfuric acid solution with a concentration of 50% by mass and 3 parts by mass of water (including water in the sulfuric acid solution) were added to 95 parts by mass of formic acid solvent, and stirred at 15°C for 2 hours to obtain a mixture;

[0053] (2) Add 5 parts by mass of γ-(2,3 glycidoxy)propyltrimethoxysilane dropwise to the mixture, and continue stirring for 10 hours after the dropwise addition to obtain a hydrophobic agent for glass.

[0054] This embodiment also provides a method for preparing hydrophobic glass, comprising the following steps:

[0055] (1) Add SiF in an airtight container 4 and water mixed solution, where SiF 4 The molar ratio with water is 4:1, put the cleaned glass in the atmosphere of the airtight contain...

Embodiment 3

[0058] This embodiment provides a method for preparing a hydrophobic agent for glass, comprising the following steps:

[0059] (1) Mix 2.5 parts by mass of methyl silicone oil and methyl hydroxy silicone oil (the mass ratio of methyl silicone oil and methyl hydroxy silicone oil is 1:1), and contain 0.5 parts by mass of HF with a mass percentage concentration of 40% hydrofluoric acid The acid solution and 3 parts by mass of water (including water in the hydrofluoric acid solution) were added to 94 parts by mass of ethanol solvent, and stirred at 45°C for 3 hours to obtain a mixture;

[0060] (2) Add 0.5 parts by mass of 3-aminopropyltriethoxysilane dropwise to the mixture, and continue stirring for 2 hours after the dropwise addition to obtain a hydrophobic agent for glass.

[0061] The above-mentioned methyl silicone oil and methyl hydroxy silicone oil are flexible long-chain low surface energy substances, which are used to prepare glass hydrophobic agents. The hydrophobic ag...

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Abstract

The invention provides a water repellent agent and a preparation method of the repellent agent as well as hydrophobic glass and a preparation method of the hydrophobic glass. The preparation method of the water repellent agent comprises the following steps of: (1) mixing a silicon-containing substance, acid, water and an organic solvent and agitating to obtain a mixture, wherein the silicon-containing substance is R-SiX3 or silicone oil; the R in the R-SiX3 is alkyl or halogenated alkyl with the carbon atom number which is more than or equal to 8; and the X is any one of halogen atom, alkoxy, acyloxy, amino and aminoxy; and (2) adding a silane coupling agent into the mixture of the step (1) and agitating to obtain the water repellent agent for the glass. A sliding angle of the hydrophobic glass prepared by the water repellent agent is greatly reduced and even tiny water drops can easily slip off on the surface of the hydrophobic glass, so that the hydrophobic performance of the glass is greatly improved.

Description

technical field [0001] The invention relates to the technical field of hydrophobic glass, in particular to a hydrophobic agent and a preparation method thereof, and hydrophobic glass and a preparation method thereof. Background technique [0002] The surface of silicate glass is a high-energy, hydrophilic surface. When water droplets spread randomly on the glass, the light transmission of the glass will deteriorate, which brings a lot of inconvenience to people's life and work. When the car is driving in rainy days, the rain will form a water curtain on the surface of the windshield, side door glass and rearview mirror glass. Especially in the night rain environment, the water curtain on the glass surface will reflect various lights and seriously affect the driver's sight. Even if the wiper is used on the glass surface, there will be many dead angles. These dead angles on the glass surface will increase the probability of traffic accidents when water droplets accumulate. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/30
Inventor 熊建民陈大华
Owner CHERY AUTOMOBILE CO LTD
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