Peek is an ultra-high performance special engineering plastic developed by ICI in 1978. Because peek is an aromatic crystalline thermoplastic polymer material, its melting point is 334 ℃, which has high mechanical strength, high temperature resistance, impact resistance, flame retardant, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, radiation resistance and excellent electrical properties, In most cases, it can replace metals, alloys, ceramics and other materials. Although it is a kind of compound material, it does not produce non-toxic gas when burning, so its application field has been rapidly expanded in today's advocating green environmental protection design.