Extrusion & Post
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Poor adhesion of ETFE to substrates
Fenómeno del problema
Insufficient adhesion of ETFE coating or lining to metal or other substrates
Análisis de la causa
ETFE surface energy is extremely low (similar to PTFE); lack of effective surface treatment
Solución
Sandblast the substrate to roughen and increase mechanical interlocking; plasma/corona/sodium-naphthalene solution treatment to increase surface energy; use primer
Conclusión clave
The low surface energy of ETFE is the core difficulty of its bonding processing
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