Molding Process
6 Aufrufe
PTFE Bonding Difficulty
Problembeschreibung
PTFE cannot be effectively bonded with other materials, strength after adhesive bonding is extremely low and it falls off, and composite structures fail.
Ursachenanalyse
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.
Lösung
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
Wichtigste Erkenntnis
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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