Molding Process
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PTFE Bonding Difficulty
Fenómeno del problema
PTFE cannot be effectively bonded with other materials, strength after adhesive bonding is extremely low and it falls off, and composite structures fail.
Análisis de la causa
PTFE's C-F bond inert shell with extremely low surface energy makes adhesives unable to wet and adhere; bonding without surface treatment is almost ineffective; the non-stick characteristic instead becomes a composite obstacle.
Solución
①Surface activation with sodium naphthalene solution treatment; ②Complete bonding within the validity period after sodium treatment; ③Select adhesives matching the treatment process; ④Bonding strength verification.; After adjustment, continuously sample to verify the effect, confirm stability before resuming mass production
Conclusión clave
The only way out for PTFE bonding is surface activation treatment; sodium naphthalene treatment is the industry standard method; treatment validity management affects success rate.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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