Trend molding of automotive plastics

- Jun 13, 2018-

Vehicle lightweight is the most important task of energy conservation and emission reduction in the future. Therefore, the trend of automobile plastics is showing in the global automobile manufacturing industry. With the development trend of automobile plastic, the application and promotion of automotive plastic parts is expected to accelerate. The whole industry will usher in rapid development and broad prospects.

It is estimated that a car's self weight will be reduced by 10%, fuel consumption will be reduced by 6%~8%, and carbon dioxide emissions will be reduced by 5%-6%. Therefore, in energy conservation and emission reduction, vehicle lightweight is an undisputed hot topic. Under this background, plastic material with low density is an effective way to lighten the weight of car body.

In the same size auto parts, plastic products can generally reduce 30%~40% in quality compared with steel products. Besides, plastic materials also have the advantages of large design space, low manufacturing cost and wide functions.

Therefore, with the constant breakthrough of technology, the application of automotive plastic products is increasing. From the exterior decoration to the interior decoration, from the functional parts to the structural parts, and even the full plastic body, the plastic products are covered more and more widely in the automobile, and the automobile plastic parts industry is moving towards the high speed development.

At the same time, the consumption of plastic products in automobiles has gradually become one of the signs to measure the development level of a country's automobile industry. Globally, the volume of plastic products used by automobiles in Germany and Japan is significantly ahead of other countries. According to statistics, every vehicle in Germany uses nearly 300kg plastic products on average, and the average plastic in Japan is 100kg. Comparatively speaking, the largest number of plastic products per vehicle in China is only 70kg, and there is still much room for improvement in the future.

It can be seen from the data that even in Germany, where the automobile industry is developed, the use of plastic products is still limited. The reason is that there are many obstacles in the promotion of automobile plasticization. On the one hand, high strength and cost-effective materials supply problems. Compared with metal, the fatigue period of plastics is shorter, the aging phenomenon is serious at high temperature or gasoline contact, and the intensity of application is not enough in the transmission part. In addition, under the technical constraints, the cost of automotive plastic products remains high.

On the other hand, automobile plasticization is also faced with problems of production transformation, cost recovery and so on. In other words, under the consideration of maximizing interests, automobile manufacturers do not have a high degree of recognition for automotive plastic parts.

However, in general, under the pressure of energy saving policy and product cost pressure, automobile plasticization is the general trend. The application and promotion of automotive plastic parts will continue to promote. With continuous breakthrough in technology, material quality and continuous improvement of technology, the existing problems of automotive plastic parts will be solved gradually, and through many efforts, such as government, car enterprises, spare parts suppliers, material producers, and so on, to the large-scale popularization and application stage, the future development prospect is available.