Car glass is rarely paid attention to, but it is an important safety equipment in the body structure and an essential accessory in the car body, mainly playing a protective role.
Automotive glass is divided into interlayer and tempered glass according to its technological properties
1, Laminated glass
Laminated glass is a glass product made by bonding two or more layers of glass with one or several layers of transparent PVB film. When the laminated glass is broken, the glass fragments still adhere to the PVB without peeling off or hurting people, which is safe. The front windshield is mandatory by China to be laminated glass.
2, Tempered glass
Tempered glass refers to high-strength glass formed by rapid cooling after high-temperature treatment.
Its mechanical strength is high, thermal stability is good, and safety performance is good. When tempered glass is broken, the fragments become honeycomb shaped blunt angle small particles, which are not easy to harm people. The side windows and rear bumpers of cars are generally made of tempered glass.
Automotive glass is classified according to its functional attributes, including coating, HUD, sound insulation, hydrophobicity, dimming, heating, etc
1. Coated glass
Using magnetron vacuum sputtering technology, a 9-20 layer metal compound film with a thickness of 50-300 nanometers is coated on the inner surface of automotive glass, which reflects solar energy
Performance: Reflecting infrared rays, making the interior cooler, reducing summer air conditioning usage, and more energy-efficient; Reduce glare and improve the safety of nighttime driving; Reduce the damage of ultraviolet radiation to car interiors and extend their service life.
2. Soundproof glass
Adding high damping sound insulation materials to the PVB interlayer can absorb uncomfortable audio noise in the range of 1000~4000Hz, achieving a noise reduction of 5-10dB;
Performance: Noise reduction and sound insulation.
3. HUD Head Up Display Glass
By utilizing an optical system, the vehicle's operating information is projected onto the driver's side 2-3 meters ahead through the front windshield. Combined with the vehicle's optical system, it provides a rich driving experience such as navigation and image display.
Performance: During driving, the driver does not need to lower their head to know vehicle information, can focus on observing road conditions, and respond more promptly to unexpected external situations.
4. Hydrophobic glass
A layer of fluorinated compound film is formed on the glass surface by the sol gel method, which increases the contact angle of the glass to water, and the water drops quickly slip off.
Performance: Improve visibility and clearer visibility during rainy driving; It is easier to remove pollutants such as dust, soil, car wax, oil stains, etc. from the glass.
5. Dimming glass
Add a PDLC film between two pieces of glass, apply voltage to the outlet, and adjust the voltage to arrange the particles in the PDLC film in a certain direction to change the transparency of the glass.
Performance: Personalized adjustment of glass transparency to enhance user experience; Effectively enhance privacy and ensure user privacy.