The selection of windshield adhesive must not be careless!

The selection of windshield adhesive must not be careless!

For a long time, in the understanding of private owners and auto repair industry, windshield adhesive is only a "supporting role" positioning, owners will pay attention to the brand of windshield and the proficiency of the installation technician when replacing the windshield, but rarely pay attention to the bonding strength and service life of automotive glass adhesive. Resulting in low-quality adhesives and common building sealants flooded in the windshield repair market, causing great safety hazards to the repaired vehicles.

In the automotive assembly industry, windshield bonding adhesive, as a connection material for automotive glass and body, will not only stay on the car permanently, but also play an important safety role. On the one hand, it is used to strengthen the strength of the entire body, and on the other hand, it is mainly displayed in the passive safety protection of the vehicle.

Often the maintenance master asked, they will be the construction of glass sealant car glass for many years have no owner complaints. In fact, the window glass is not leaking, but the strength of the vehicle has decreased, which may cause the body to leak; As a passive safety protection, the safety of automotive glass sealant plays a role in extreme circumstances, like an airbag. Few people have experienced the effects of airbags, but they protect tens of thousands of lives in fatal traffic accidents around the world each year. (In all potentially fatal crashes, the survival rate is about 60% when seat belts and airbags are used correctly and in combination.) In traffic accidents, windshields fly out and people fly out. High strength, high quality glass sealant as much as possible to avoid these should not happen tragedy.

In fact, the safety role of automotive glass adhesives, especially windshield glass adhesives, is not difficult to understand. Whenever the car is lightweight design, the body becomes an integral load bearing force. Windshield glass, as the most rigid body part, plays an important supporting role. It needs to ensure that in the event of a collision, it can withstand the dual impact of the air bag explosion and the front passenger. And this impact is completed by the strong connection of the windshield glass sealant. According to the standards of automobile manufacturers, the tensile strength of windshield sealant needs to reach at least 6-7MPa(60-70 kg per square centimeter) to ensure safety.

Further, in recent years, with the strengthening of occupant protection requirements in Europe and the United States, safety bodies continue to appear. Safety crash star (EURONCAP test, requiring the vehicle after the crash, fully ensure the living space of the front driver and passenger, the body A-pillar and glass frame are unchanged, the door can be freely opened. Therefore, in this case, the windshield adhesive should not only resist the impact of the air bag, but also use the rigidity of the glass to reduce the deformation of the A-pillar and the car frame.

Windshield adhesive as one of the components of the safety performance of the car, the construction of windshield adhesive requires special training, such as the shape of the sealant nozzle, the thickness of the gel and the sealing construction of some models, etc., the installation and replacement of the precautions also need to be paid attention to, only in this way, in order to ensure that everyone is really safe driving.