PEEK is the abbreviation for polyetheretherketone, a high-performance thermoplastic special engineering plastic with the following characteristics and properties: chemical structure. The main chain of PEEK molecules is composed of benzene rings, ether bonds, and ketone bonds, which endow it with many excellent properties. The benzene ring structure provides rigidity and heat resistance, ether bonds increase the flexibility and processability of molecular chains, and ketone bonds help improve the crystallinity and mechanical properties of materials.

The application of PEEK in analytical instruments is mainly reflected in its excellent characteristics such as high temperature resistance, corrosion resistance, and self-lubricating properties, which make PEEK and its composite materials widely used in the analytical testing instrument industry.

The hardness of PEEK material depends on whether it is pure material, added with glass fiber or other additives. Generally, the Shore D of pure PEEK is 88, the Shore D of glass fiber reinforced PEEK is generally D89, and the Shore D of carbon fiber reinforced PEEK is generally D91. However, different degrees of crystallinity can also result in varying degrees of hardness.