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DuPont Vertrel specialty fluids
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Application-Specific FAQs

» Can DuPont™ Vertrel® specialty fluids be used to deposit coatings and lubricants? 
» Can DuPont™ Vertrel® specialty fluids dissolve and deposit silicone lubricants? 
» Can PTFE lubricants mix with DuPont™ Vertrel® specialty fluids? 
» Why are DuPont™ Vertrel® specialty fluids used in electronics applications? 
» Why are DuPont™ Vertrel® specialty fluids used in metal cleaning applications? 
» Why are DuPont™ Vertrel® specialty fluids used in medical applications? 



Can DuPont™ Vertrel® specialty fluids be used to deposit coatings and lubricants?

The same characteristics that make Vertrel® specialty fluids an excellent cleaner—heavy, nonflammable and highly soluble with many types of contamination—also permit Vertrel® specialty fluids to carry coatings and lubricants and deposit those coatings precisely where they are required.

The coating or lubricant must either be soluble in Vertrel® specialty fluids or have a specific gravity similar to Vertrel® specialty fluids. The most common coatings are silicone lubricants and PTFE powdered coatings.

Vertrel® specialty fluids carry the coating and deposit it on the surface being lubricated during a dipping process. The primary benefit of using Vertrel® specialty fluids in this application is the speed or throughput of this solvent-based process. Most users also feel the process delivers a superior coating, which improves product quality. The surfaces do not have to be flat for this coating process to work; irregular shapes and blind vias can be coated as easily as a disk drive platter.

Can DuPont™ Vertrel® specialty fluids dissolve and deposit silicone lubricants?

Yes, Vertrel® specialty fluids can easily dissolve silicone lubricants and residues. Vertrel® specialty fluids are an excellent choice when silicone lubricants are required, such as in many medical applications. Vertrel® specialty fluids can carry up to 8% silicone by weight, which makes it far more cost effective than the other choices. Many customers are switching from HCFC-141b carrying agents and finding that Vertrel® specialty fluids work very well in this application.


 
Can PTFE lubricants mix with DuPont™ Vertrel® specialty fluids?

Yes. Many PTFE "dry lubricants" and coatings use Vertrel® specialty fluids as the carrying agent. These are normally applied in a dipping process. These processes work particularly well with Vertrel® specialty fluids because Vertrel® has some capability to dissolve PTFE and the densities of the material are similar to each other. Coatings produced with Vertrel® specialty fluids will have superior lubricity to coatings produced with HCFC-141b carrying agents because of the intrinsically closer match chemically between the solvent and the PTFE lubricant. The end result is a PTFE coating that is exceptionally smooth, free of runs and drips, and highly cost-effective.

The handling of the dipping process is simplified as well with Vertrel® specialty fluids because the material stays in suspension better than with the lighter carrying agents. This improves quality and reduces rework while simplifying the need to constantly agitate the dipping solution.


 
Why are DuPont™ Vertrel® specialty fluids used in electronics applications?

  • Cleans lead-free and no-clean fluxes
  • Excellent solvency power (high KB value); superior cleaning performance
  • Low surface tension; penetrates tight spaces
  • Fast, residue-free drying; increases productivity
  • Compatible with a broad range of substrates and contaminants
  • Cost effective; lowers your per-part cleaning costs
  • Superior technical support available to aid process design/troubleshooting

 
Why are DuPont™ Vertrel® specialty fluids used in metal cleaning applications?

  • Excellent solvency power (high KB value); superior cleaning performance
  • Fast, residue-free drying; increases productivity
  • Compatible with a broad range of substrates and contaminants
  • Cost effective; lowers your per-part cleaning costs
  • Specific grades available for high-volume, spot-free drying process
  • Superior technical support available to aid process design/troubleshooting

 
Why are DuPont™ Vertrel® specialty fluids used in medical applications?

  • Fast, residue-free drying
  • Compatible with a broad range of substrates and contaminants
  • Excellent carrier for silicone deposition or other thin films
  • Good solvency strength
  • Special grades available to be used for silicone tube swelling
  • Cost effective; lowers your per-part cleaning costs
  • Superior technical support available to aid process design/troubleshooting