Is the plastic used in the bumper for cutting corners?
The front and rear end of the car is equipped with a bumper (bumper), which not only has decorative functions, but also is a safety device for absorbing and alleviating the external impact force, protecting the body, protecting the body and the safety function of the passenger. The plastic outer plate and buffer material beams with a thickness of about 1.5 mm cold-rolled sheet metal into a U shape groove; the outer plate and buffer material attached to the beams, beams and beam frame screw connection, can be removed at any time. The plastic used for the plastic bumpers generally consists of two materials, polyester and polypropylene, which are made by injection molding. For example, the bumper of Peugeot 405 was made of polyester and made by reaction injection molding.
The bumper of a car is an accessory (wearing parts) of a car body, located in the front of the car (called the front bumper) and the rear of the car (referred to as the rear bumper). Most of them are made of PP and three yuan epdm. The bumpers, bumpers and cushioning materials are all made of plastic.
And Volkswagen's Audi 100, golf, Shanghai Santana, Tianjin Xiali and other models of the bumper car, using a polypropylene material, injection molding law. There is also a foreign called polycarbonate plastic line, into the components of the alloy, the alloy injection molding method, process out of the bumper not only has high strength rigid, can also have the advantages of welding, and coating performance, in the amount of cars is increasing. Bumpers have the function of safety protection, decorating vehicles and improving the aerodynamic characteristics of vehicles. From the safety point of view, when the car has a low-speed collision accident, it can act as a buffer, protect the front and rear bodywork, and play a certain role in protecting pedestrians when accidents occur with pedestrians. From the exterior, it is decorative and becomes an important part of the exterior of the decorated car. At the same time, the car bumper has a certain aerodynamic effect.
