SubscriberWe are trying to bond PTFE to a ABS plastic frame. Issues with current process is glue bond is failing and causing leaks when water pressure is applied. What does 3M offer in its product line that might help our MFG process reduce quality issues.
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John Merchant
3M Application Engineer
This is a great question. Polytetrafluoroethylene (PTFE) is a very stable polymer with a very low surface energy which makes it ideal for many non-stick applications. Unfortunately, that also makes it one of the most challenging substrates to adhere. In fact, there are only a few options for bonding to PTFE. For large parts, there are exotic options like chemical etching or plasma etching. For small parts, 3M™ offers a cyanoacrylate instant adhesive that can adhere to PTFE with a primer.
Cyanoacrylates work best with flat substrates, small areas (around 1 cm²), and shear or tensile stresses. For PTFE on ABS, you can test 3M PR100 with a primer on the PTFE (AC77). See the technical data sheets for detailed surface preparation and use instructions:
3M™ Scotch-Weld™ Instant Adhesive Primer AC77
3M™ Scotch-Weld™ Plastic and Rubber Instant Adhesive PR100
Please comment below if you have additional questions.
