What are the requirements for scratch resistance of automotive plastic parts?

As cars become lighter, more and more plastic parts are used in cars. Automotive instrument panel / dashboard, door trim panel, bumper are high usage rate and the exposed parts of the scratch resistance requirements.

In the industry, modified PP plastics are gradually replacing other materials and are increasingly used in automotive components.

However, the defects of PP are also obvious. After the addition of talc, PP plastic has good mechanical properties, but it also reduces the scratch resistance of PP plastics. Now, in the car market, the skin texture of the interior of the car is more popular with consumers, and the roughness of the skin, scratch resistance is also poor. As a matter of fact, the automobile interior decoration enterprises solve the problem by spraying a layer of wear-resistant coating. However, considering the environmental and health aspects, this is inappropriate, and the cost is also very high.

The application of spray free plastics in the automotive field is not only environmentally friendly and healthy, but also reduces the cost and reject rate due to the process of painting. The problem with free spray plastics is that scratch resistance is not enough. If the scratch free performance of the spray free plastic can be solved, the application of the spray free plastic in the automotive field will be a breakthrough.

To increase the scratch resistance of plastics, there are two main ways to increase the scratch resistance of plastics.