On rainy days, especially in countries and regions with a lot of rainfall, driving on rainy days often faces the dilemma that the rearview mirror is wet by rain and the vision is blurred, which seriously affects driving safety. In recent years, a hydrophilic rainproof film has appeared on the market, the use method is similar to window film. The rearview mirror is attached to this hydrophilic film, can keep the mirror surface clear at all times. As a result, the hassle of rainy driving is relieved.

Its price is generally in the dozen yuan a pair. Once put on the market, it is quickly favored by the majority of car owners and is all the rage. On the market, the price of hydrophilic rainproof film ranges from a few yuan to several hundred yuan, the product quality is also uneven, mixed fish and dragons, in the face of many similar products how to identify and choose, please refer to the following evaluation criteria:

1. Clarity

The clarity of a good quality hydrophilic film should be very high, no matter from which angle, there will be no haze overflowing. Poor quality film clarity is often not well controlled enough, the side feels that the membrane surface has a layer of white fog, giving people an uncomfortable feeling, and not conducive to driving safety.

2. Hydrophilic and rainproof effect

As a functional film, the pros and cons of hydrophilic effect is an important indicator. Good quality hydrophilic film, whether heavy rain or light rain has excellent hydrophilic effect, and most hydrophilic films on the market can only show good hydrophilic effect when washed by a large amount of water, and spray a large amount of water before use will have an effect. However, the reality is that the rearview mirror is an upright façade, and it is in a leeward direction, and there is not much rain on the rearview mirror. Therefore, it also has a good hydrophilic effect on fine water spray, which is a high-quality hydrophilic rainproof film.

3. Duration of hydrophilic effect

The duration of the hydrophilic effect directly determines the life of the membrane. Some merchants in the market say that the hydrophilic effect can last for 1~2 years, or even 3~5 years. But in fact, after about 2 weeks of use, the hydrophilic effect has become very poor, and it is recommended to communicate with the merchant on this indicator before purchasing.

4． Surface hardness and wear resistance

The hydrophilic coating on the membrane surface should have good hardness and wear resistance to prevent wear and scratch the film surface, when cleaning and wiping the rearview mirror in the later stage, affecting continued use.

5. no degumming, no glue

At present, almost all hydrophilic rain films will deteriorate and disappear after a period of use. In a certain cycle, the hydrophilic rainproof film needs to be replaced, and the original film should not fall off or residual glue on the surface of the rearview mirror after being torn off. Poor quality films often have residual glue that needs to be carefully cleaned.

The above points are the main parameters for the evaluation of hydrophilic films and coatings, and are also the summary and experience of Huzheng Company in the research of hydrophilic nano coatings for more than ten years. Hydrophilic coating not only in the car rearview mirror, in the solar panel and building curtain wall glass have broad application prospects. In order to solve the pain points of products such as hydrophilic coating construction and poor durability, Huzheng has achieved a series of results after long-term and arduous research and development. In order to devote ourselves to the civilian use of nano-functional materials and facilitate people's daily life, we have been working hard!