Can DuPont™ Vertrel® solvents be used to deposit coatings and lubricants?
The same characteristics that make Vertrel® solvents an excellent cleaner—heavy, nonflammable and highly soluble with many types of contamination—also permit Vertrel® solvents to carry coatings and lubricants and deposit those coatings precisely where they are required.
The coating or lubricant must either be soluble in Vertrel® solvents or have a specific gravity similar to Vertrel® solvents. The most common coatings are silicones lubricants and PTFE powdered coatings.
Vertrel® solvents carry the coating and deposit it on the surface being lubricated during a dipping process. The primary benefit of using Vertrel® solvents 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.
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Can DuPont™ Vertrel® solvents dissolve and deposit silicone lubricants?
Yes, Vertrel® solvents can easily dissolve silicone lubricants and residues. Vertrel® is an excellent choice when silicone lubricants are required, such as in many medical applications. Vertrel® 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® solvents work very well in this application.
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Can PTFE lubricants mix with DuPont™ Vertrel® solvents?
Yes. Many PTFE "dry lubricants" and coatings use Vertrel® solvents as the carrying agent. These are normally applied in a dipping process. These processes work particularly well with Vertrel® because Vertrel® has some capability to dissolve PTFE and the densities of the material are similar to each other. Coatings produced with Vertrel® will have superior lubricity to coatings produced with HCFC-141b carrying agents because of the intrinsically closer match chemically between the Vertrel® 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® 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.
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Why are DuPont™ Vertrel® solvents 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; lower your per-parts cleaning costs
- Superior technical support available to aid process design/troubleshooting
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Why are DuPont™ Vertrel® solvents 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; lower your per-parts cleaning costs
- Specific grades available for high-volume, spot-free drying process
- Superior technical support available to aid process design/troubleshooting
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Why are DuPont™ Vertrel® solvents 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; lower your per-parts cleaning costs
- Superior technical support available to aid process design/troubleshooting
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