Automobile windscreen film plating agent, and preparation method thereof

A technology for windshields and coating agents, which is applied in the direction of paints, coatings, antifouling/underwater coatings containing biocides, etc., can solve the problems of increased hardness, glare reaction, and the thermal insulation and sound insulation effects need to be improved. Good thermal stability, good compatibility, excellent hydrophobicity

Inactive Publication Date: 2019-07-02
谢耀平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After research, it is found that the automotive windshield coating agents currently on the market still have the following problems: 1. Although the hydrophobicity of small molecule silicone oil and fluorosilicone resin is better, the oilophobicity is poor, and it is still easy to absorb dust and oil. It increases the difficulty of glass cleaning, increases the frequency of glass cleaning, and the effect of heat and sound insulation needs to be improved; 2. Small molecular silicone oil has a high refractive index, which has a large refraction and diffraction effect on light, and it is easy to produce glare reaction after forming a protective film. There are safety hazards in driving at night and under strong light; 3. After the existing coating agent is applied, it cannot form a dense and uniform transparent protective layer. reduce lubricity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The automobile windshield coating agent of the present embodiment comprises the following raw materials in parts by weight: 10 parts of fluorosilicone resin, 3 parts of heptadecafluorodecyltrimethoxysilane, 1.2 parts of hydrophobic nanofillers, 4 parts of silane coupling agent KH560, 2 parts of silicon carbide, 0.9 parts of sound and heat insulation filler, and 58 parts of dimethyl carbonate. Among them, the solid content of the fluorosilicone resin is ≥50%, the fluorine content is ≥25%, the average molecular weight is 8000-10000, and the hydroxyl value is 23±2mg KOH / g.

[0036] The preparation method of described hydrophobic nanofiller is as follows:

[0037] 1) Preheat the three-necked flask to 55°C, add 27g of elemental silicon powder and 6g of sodium silicate, slowly add 245g of deionized water while stirring, and raise the temperature to 80°C at a rate of 3°C / min. Add the mixed solution of 42g sodium silicate and ammonia water dropwise to the pressure dropping fun...

Embodiment 2

[0050] The automobile windshield coating agent of the present embodiment comprises the following raw materials in parts by weight: 11 parts of fluorosilicone resin, 4 parts of heptadecafluorodecyltrimethoxysilane, 1.6 parts of hydrophobic nanofillers, 5 parts of silane coupling agent KH580, 1.5 parts of silicon carbide, 1.2 parts of sound insulation and heat insulation filler, 50 parts of dimethyl carbonate. Among them, the solid content of the fluorosilicone resin is ≥50%, the fluorine content is ≥25%, the average molecular weight is 8000-10000, and the hydroxyl value is 23±2mg KOH / g.

[0051] The preparation method of described hydrophobic nanofiller is as follows:

[0052] 1) Preheat the three-necked flask to 58°C, add 28g of elemental silicon powder and 7g of sodium silicate, slowly add 255g of deionized water while stirring, and raise the temperature to 80°C at a rate of 5°C / min. Add 51g of the mixed solution of sodium silicate and ammonia water dropwise to the pressure ...

Embodiment 3

[0063] The automobile windshield film coating agent of the present embodiment comprises the following raw materials in parts by weight: 8 parts of fluorosilicone resin, 3 parts of heptadecafluorodecyltrimethoxysilane, 1.8 parts of hydrophobic nanofillers, 5 parts of silane coupling agent KH570, 2.5 parts of silicon carbide, 1.3 parts of sound and heat insulation filler, and 57 parts of dimethyl carbonate. Among them, the solid content of the fluorosilicone resin is ≥50%, the fluorine content is ≥25%, the average molecular weight is 8000-10000, and the hydroxyl value is 23±2mg KOH / g.

[0064] The preparation method of described hydrophobic nanofiller is as follows:

[0065] 1) Preheat the three-neck flask to 60°C, add 30g of elemental silicon powder and 7.6g of sodium silicate, slowly add 252g of deionized water while stirring, and raise the temperature to 80°C at a rate of 4.5°C / min. During the heating process, use Add 50g of the mixed solution of sodium silicate and ammonia ...

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Abstract

The invention discloses an automobile windscreen film plating agent, and a preparation method thereof. According to the preparation method, environmental friendly dimethyl carbonate is selected as a solvent, fluorosilicone resin, heptafluorodecyl trimethoxysilane are selected as main hydrophobic components, a hydrophobic nano-filler, silicon carbide, and a sound-insulating filler are taken as auxiliary materials or additives. The preparation method includes mixing and stirring, and ultrasonic dispersion. When the automobile windscreen film plating agent is sprayed on an automobile windscreen,a dense hydrophobic protective film layer structure is formed on the surface of the glass, and the film layer is firmly bonded with the glass with the hydrophobic nano-filler with good bonding property at the same time; a small amount of silicon carbide is capable of improving the hardness and wear resistance of the film layer greatly, and achieving excellent hydrophobicity, stain resistance, sound and heat insulation performance, UV resistance and antistatic property; and fine cracks are not caused by long-term wiping and cleaning.

Description

technical field [0001] The invention relates to the technical field of glass coating, in particular to an automobile windshield coating agent and a preparation method thereof. Background technique [0002] When a car is driving at high speed, it will inevitably encounter severe weather such as heavy rain, strong wind, sandstorm, and hail. Blurred vision poses a great safety hazard. In heavy rain and sandy weather, even if the wiper runs at high speed, it still cannot wipe off the rainwater and dust particles on the glass in time. At this time, the water curtain will easily form on the glass, forming scratches and pits, affecting the front view of the windshield. Bring great potential safety hazard to driving. [0003] Glass coating agent is a traditional car glass maintenance product. At present, most of them use chemical polymer materials. The main component is small molecule silicone oil with strong hydrophobic effect. The small molecule silicone oil is evenly dispersed a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D5/24C09D5/16C09D7/62C09D7/63C09D7/61C03C17/00
CPCC03C17/007C03C17/009C03C2217/46C03C2217/475C03C2217/48C08K2003/2241C08K2201/011C08K2201/017C09D5/1675C09D5/1687C09D5/18C09D5/24C09D183/08C08K13/06C08K9/10C08K9/08C08K9/04C08K9/00C08K5/5419C08K3/34C08K3/36C08K3/22C08K7/18
Inventor 谢耀平李翠萍
Owner 谢耀平
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