Water-Based Fluoropolymer Chemistry
Aqueous-Based Coating Technology
This next generation waterbased, Non-Cr(VI) Fluoropolymer coating, was uniquely designed to optimize coating durability, adhesion, and corrosion resistance while greatly reducing the coefficient of friction. Our world-class fluoropolymer chemistry delivers unmatched lubricity and adhesion on all medical guide wires in the ease a one-coat system and a safe non-Cr(VI) system. This coating is designed to be applied to all high-temperature alloys and all grades of stainless steel substrates to perform like our golden standard 850G-9004 coating, without the use of Cr(VI).
Coating Equipment & Application Recommendations
All of our PTFE coatings can be applied via spray, dip or spool-to-spool methods. Proper pre-coating wire cleaning treatment and post-application curing equipment is critical to guarantee performance and durability. Acceptable curing equipment includes high-temperature ovens which can safely maintain temperatures of 246 °C (475 °F) or utilize IR ovens. This will ensure proper sintering of the coatings onto the wire and promote the best surface characteristics that can be achieved.
Coating Property Data
|Typical Film Thickness||10-20 Microns|
|Coverage,2 m2/kg (m2/L) (ft2/gal)||4.44 (4.88) (199)|
|Viscosity,3 centipoises||400 – 600|
|Volume Solids, %||10.2 – 14.2|
|Weight Solids,4 %||18.0 – 21.0|
|Density, kg/l (lbs/gal)||1.10 (9.17)|
|VOC content, U.S. lb/gal (g/L) (less exempt)|
|As Packaged||0.401 (48.0)|
|Less Exempt||3.93 (472)|
|Maximum In-Use Temperature, °C (°F)||260 (500)|
|Flash Point, SETA closed cup, °C (°F)||>93 (200)|
ASTM & ISO Standards Met
- ASTM 1894 Coefficient of Friction
- ASTM D3359 Adhesion Test
- ISO 7802 Wire Wrap Test
- ISO 11070 Corrosion Resistance Test
- Coated smooth stainless steel panels passed Adhesion test, ASTM-3359
- Coated stainless steel catheter guidewires passed flexibility/adhesion tests, ISO 7802 Annex F wrapping test
- Coated stainless steel catheter guidewires passed corrosion resistance, ISO11070 Annex B, saline soak test
All Miller-Stephenson’s formulations generate very uniform thin films which exceed all ISO and ASTM requirements.
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This exceptional coating service is offered to any customer or OEM that does not have the ability to coat in-house or is looking to have a complete pre-coated turn-key solution product made and delivered. We offer customers the ability to utilize the coating services of the most highly regarded medical coaters in the United States. They provide strictly medical coating operations on some of the world’s most difficult geometrical device designs.
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