The future car is a green car that adapts to environmental protection, so it is inevitable to mention the environmental protection awareness of composite materials. Composite materials can improve material properties, extend service life, and enhance functionality, all of which are beneficial to the environment. However, we should take seriously and make efforts to overcome the recycling problem of composite materials, so as to make composite materials develop in the direction of environmental harmonization.
The recycling of composite parts is very difficult and has some adverse effects on the environment. For example, most of the fastest-growing and most widely used polymer-based composite materials are flammable substances, which will emit a large amount of toxic gases when burning, polluting the environment; and during molding, the volatile components in the matrix, that is, the solvent will diffuse into the air. , causing pollution. The use of composite materials itself is composed of a variety of component materials, which are multi-phase materials, and are difficult to crush, grind, melt and degrade. Composite parts are first decomposed into single-material parts. It is very difficult to restore its original performance. Therefore, one of the main conditions for recycling is that the parts are easy to disassemble, and it is possible to use a single variety of materials as much as possible. Even composite materials should try to use less composite materials. Based on the above-mentioned principle considerations, the application amount of thermoplastic polyolefin elastomer, polypropylene foam material and GMT reinforced sheet will be greatly increased, on the contrary, the amount of thermosetting resin will be limited. At present, great progress has been made in the research work on regeneration and degradability. In today's society, people's attention has gradually turned to the relationship between man and nature, and environmental and energy issues have become the key to the survival and development of every country in the world. With the continuous improvement of people's awareness of environmental protection and the successive introduction of environmental protection regulations, green cars have become an inevitable trend of future car development. Therefore, how to make cars meet the requirements of environmental protection has been mentioned on the agenda of car manufacturers. As the mainstream of future automotive materials development, composite materials will definitely play a very important role in it.
