When it comes to polyetheretherketone, it is well known that if plastic materials are compared to a pyramid, PEEK is the one at the top of the tower. Polyetheretherketone (PEEK resin) is a semi-crystalline, high performance thermoplastic engineering plastic with strong mechanical properties, chemical resistance, wear resistance, fatigue resistance and dimensional stability, high temperature resistance of 260 ℃, commonly used in engineering machinery, aerospace products. According to Naban new material editorial, PEEK and other high temperature resistant plastics such as PI, PPS, PTFE, PPO and other high temperature resistant plastics use the upper limit of more than 50 ℃.
First, PEEK heat resistance is very strong, PEEK plastic heat resistance up to 260 degrees, heat deflection temperature up to 160 degrees, if you add 30% glass fiber modified, its heat deflection temperature up to 316 degrees C. PEEK resin at high temperatures can still maintain high strength, 200 degrees C bending strength up to 24mpa, while at 250 degrees C bending strength and bending strength is still 12 ~ 13mp .
Second, PEEK chemical stability is excellent, in addition to concentrated sulfuric acid almost all chemical reagents; its corrosion resistance is close to nickel steel, while its own flame retardant, peek's V0 flame retardant grade as low as 1.45mm, LOI of 35%, its smoke and toxic emissions are extremely low. Excellent hydrolysis resistance, insoluble in all common solvents, even in the 200-250 ℃ steam environment or high-pressure water, can be used for a long time and will not occur a significant reduction in performance.
Once again, PEEK resin has significant tribological characteristics, with excellent resistance to sliding wear and micro-motion wear, particularly at 250°C where it maintains high wear resistance and a low coefficient of friction.
In addition, PEEK resin also has a large rigidity, good dimensional invariance, low coefficient of linear expansion, very close to the metal aluminum material. Easy to injection molding, extrusion molding, good processing properties, high molding efficiency.