Abstract
Victrex high-heat resistant polyaryletherketone (PEEK) polymer can be welded using ultrasonic, friction and hot plate welding techniques. When welding Victrex PEEK, it must be remembered that the melting point is very high and therefore considerable amounts of energy must be put into the polymer during welding to achieve a good bond. Ultrasonic welding of composites with thermoplastic-only energy directors produced excellent bonds. The short beam shear strength of the welded composites was equal to the short beam shear strength of compression molded parts. For PEEK composites (PEEK APC-2) as with other semicrystalline polymers, high power inputs are necessary in order to heat the material to a temperature above the melting temperature. Many adhesive types can be used for bonding Victrex PEEK either to itself or to other materials. The bond strength will be very dependent on the surface preparation prior to bonding. The chapter also informs that PEEK is compatible with all Loctite adhesives, sealants, primers, and activators. Recommended surface cleaners are isopropyl alcohol and Loctite ODC Free Cleaner 7070.
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