What is a new composite material

The history of the use of new composite materials can be traced back to ancient times. The straw-enhanced clay used from ancient times to the present and the reinforced concrete that has been used for hundreds of years are both composites of two materials. In the 1940s, due to the needs of the aviation industry, glass fiber reinforced plastics (commonly known as glass fiber reinforced plastics) were developed, and the name composite material has since appeared. After the 1950s, high-strength and high-modulus fibers such as carbon fiber, graphite fiber and boron fiber have been successively developed. Aramid fibers and silicon carbide fibers appeared in the 1970s. These high-strength, high-modulus fibers can be combined with non-metallic substrates such as synthetic resins, carbon, graphite, ceramics, rubber, or metal substrates such as aluminum, magnesium, and titanium to form unique composite materials.

The specific strength of ultra-high molecular weight polyethylene fiber ranks first among various fibers, especially its resistance to chemical agents and excellent anti-aging properties. It also has excellent high-frequency sonar permeability and seawater corrosion resistance. Many countries have used it to manufacture high-frequency sonar domes for ships, which greatly improves the mine detection and mine clearance capabilities of ships. It is developed by Sijia New Materials in China. New composite materials represent a relatively high level in China. In addition to the military field, ultra-high molecular weight polyethylene fibers also have broad application prospects in automobile manufacturing, shipbuilding, medical equipment, sports equipment and other fields. Once the fiber came out, it attracted great interest and attention from developed countries in the world.