Hydrophobic and oleophobic coating liquid for automobile glass

Abstract

The invention discloses a hydrophobic and oleophobic coating liquid for automobile glass, and the hydrophobic and oleophobic coating liquid comprises the following components by weight: 0.5-5 parts ofa fluorosilane coupling agent, 5-20 parts of water, 0.5-5 parts of a catalyst, 70-92 parts of a solvent and 0-2 parts of an auxiliary agent. The hydrophobic or oleophobic coating liquid for the automobile glass solves the following problems existing in the prior art: (1) weather resistance of a conventional glass coating agent is poor; (2) self-cleaning ability of the conventional glass coating agent is poor; the conventional glass coating agent is hydrophobic but non-oleophobic; (3) the conventional glass coating agent easily causes jumping of windscreen wipers; and (4) the conventional glass coating agent is high in refractive index.

Description

technical field [0001] The invention relates to a coating, in particular to an oil-water amphobic coating liquid for automobile glass. Background technique [0002] Whether the car glass is transparent or not is closely related to the driving safety of the car. On the one hand, for vehicles driving in rainy days, especially heavy rainy days, rainwater is likely to form raindrops or rain curtains on the glass, which will seriously affect the driver's sight, and it is necessary to frequently turn on the wiper to alleviate this phenomenon and restore a clear vision; On the other hand, automobiles are outdoor products, and the use environment is complicated. They are easy to be stained with dirt, oil stains and other difficult-to-clean stains, which will also affect the driver's sight. [0003] The traditional solution is to apply a layer of hydrophobic glass coating on the glass surface, so that the glass surface has a strong hydrophobic effect, and the water droplets dripping...

AI Technical Summary

Problems solved by technology

[0005] Because the traditional glass coating agent uses small molecule silicone oil as the main effective substance, and small molecule silicone oil is an inert substance, which is simply physically adsorbed with glass, so the weather resistance is relatively poor, and the effective time is not long, requiring frequent construction to maintain the hydrophobic effect; Although the viscosity of small molecule silicone oil is not high, it is still easy to absorb dust and oil. The dust or oil from the adsorption combines with small molecule silicone oil, which increases the difficulty of cleaning the glass; and small molecule silicone oil forms after absorbing dust and oil. The dirt is uneven, which reduces the flatness and smoothness of the glass. When the wiper is turned on, there will be undesirable phenomena such as jumping wiper and abnormal noise; moreover, the small molecule silicone oil has a high refractive index and has a greater impact on light. Due to refraction and diffraction effects, there will be side effects of glare after construction. Driving at night is easily affected by lights, causing spots and rainbow patterns, etc., which endanger the safety of driving at night.

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