Why doesn't the bumper of the car need elastic material like rubber?
The PP is simply to fix the rubber on the steel beam. The car is beautiful. Windage. Wait a lot of questions. Plus the plasticity of rubber. Durability is not good. So no one makes
For collision safety, an elastic bumper does not have any use. The force of the collision is very large, and the elastic material itself can not cope with so much power. In fact, we see the outer bumper is only for the beautiful shape, the real bumper is the inner layer of the anti-collision rod, the collision bar is the collision of deformation, absorb energy, protect the main structure of the car.
There are a lot of car bumper is plastic (not rubber), such as Citroen's C4, and even surrounded are plastic.In some foreign countries, the bumpers of some cars are black, that is, plastic primary colors, without spraying paint. This bumper rubbing is okay, without any treatment. Domestic due to aesthetic reasons, the bumper is painted, rub after it is ugly, can only paint, but if they do not care about unsightly, can not be treated.
In fact, many foreign models have just arrived in the country, the use of rubber bumpers, such as: old Santana, Chevolet Spaak and so on, are used in this black rubber bumper.But although the bumpers are very practical, they seem to be of low quality. The car manufacturers use glass fiber reinforced plastic bumpers in order to improve the image of the car and to make the body color and cost.
