What is special plastic?
Special plastics generally refer to plastics with special functions that can be used in special applications such as aviation and aerospace. For example, fluoroplastics and silicones have outstanding high temperature resistance, self-lubricating and other special functions, and reinforced plastics and foamed plastics have special properties such as high strength and high cushioning. These plastics belong to the category of special plastics.
a. Reinforced plastic:
Reinforced plastic raw materials can be divided into granular (such as calcium plastic reinforced plastic), fiber (such as glass fiber or glass cloth reinforced plastic), and flake (such as mica reinforced plastic) in appearance. According to the material, it can be divided into cloth-based reinforced plastics (such as rag reinforced or asbestos reinforced plastics), inorganic mineral filled plastics (such as quartz or mica filled plastics), and fiber reinforced plastics (such as carbon fiber reinforced plastics).
b. Foam plastic:
Foam plastics can be divided into three types: rigid, semi-rigid and flexible foams. Rigid foam has no flexibility, and its compression hardness is very large. It will deform only when it reaches a certain stress value and cannot return to its original state after the stress is relieved. Flexible foam is flexible, with low compression hardness, and is easy to deform. It can be deformed after stress is relieved. Restore the original state, the residual deformation is small; the flexibility and other properties of the semi-rigid foam are between the rigid and soft foams.