Why are car bumpers made of plastic?
The regulations require that the front and rear end protection devices of the car ensure that the vehicle will not cause serious damage to the vehicle in the event of a mild collision of 4km/h. In addition, the front and rear bumpers protect the vehicle and reduce vehicle damage at the same time, but also protect the pedestrian and reduce the injury suffered by the pedestrian when the collision occurs. Therefore, the bumper housing material should have the following characteristics:
1) With a small surface hardness, can reduce pedestrian injury;
2) Good elasticity, with strong ability to resist plastic deformation;
3) The damping force is good and can absorb more energy within the elastic range;
4) Resistance to moisture and dirt;
5) It has good acid and alkali resistance and thermal stability.
