How is the oil film on the windshield formed?
1 Answers
Automotive glass is an essential component of a vehicle's body attachments, primarily serving a protective function. There are three main types of automotive glass: laminated glass, tempered glass, and zone-tempered glass, all of which can withstand strong impacts. The formation of an oil film on the windshield is caused by the exhaust pipes of vehicles ahead. Driving closely behind another vehicle makes it easier for the oil film to adhere to the windshield. The symptoms are not noticeable during the day, but at night when it rains and the wipers are used, headlights from oncoming traffic will reveal a hazy, patchy film on the glass, unevenly distributed with a net-like pattern in the middle. Additionally, rainwater forms irregular droplets on the glass, significantly impairing visibility. Additional information: 1. The use of coated wiper blades, which have a layer of silicone oil on the rubber (coating the glass when wiping), causes rainwater to roll off the windshield immediately, an effect known in the industry as the lotus leaf molecular effect. 2. The use of water wax for car washing, which forms a film on the windshield. 3. The windshield has undergone crystal coating or water-repellent treatment, similar to coating, making the glass less prone to water adhesion.
