PTFE Liquid Dispersion
Non Melt
Melt
Also known as PTFE Aqueous dispersions, they are milky white dispersions of PTFE particles suspended in aqueous medium, stabilized by wetting agents. The dispersion typically contains 30-60%weight polymer particles and non-ionic surfactant. The PTFE particle characteristics and surfactant type depend on the application. They can be further formulated to meet specific needs by adding other solid or liquid ingredients. This tetrafluoroethylene resin has excellent resistance properties toward heat and chemicals. It also possesses weatherability, electrical characteristics of high frequency, reduced surface tension and non-sticky in nature.
PTFE Aqueous dispersion can also be used as additive in thermoplastics (as drip suppressant) or in dusty products to eliminate dust. As with PTFE Fine powders, aqueous dispersion particles also fibrillate under shear and these PTFE fibrils form a web within the host material that holds the dust or avoid the dripping of burning droplets in case of a fire.
PTFE Aqueous dispersions are applied to substrates by spraying, dipping or impregnation. After applying the dispersion on the substrate the water and surfactants are removed by evaporation and the PTFE is sintered. The substrate needs to be resistant to the typical sintering temperatures of PTFE.
In special cases, such as impregnated packing, the PTFE is left un-sintered to maintain flexibility.
Applications: Impregnation or Coatings
| Grades | Series A1D –60% | Series A2D – 60% HD | Series A3D –60% M |
| Product Category | Applications | Applications | Applications |
| Woven fiber-glass fabric | Heat-barrier films for textiles, food, electronics, architectural solutions | ||
| Impregnated porous fibres, Packings | High temperature gland packings | ||
| Coatings, Protective films | Metallic surfaces, cookware | ||
| Anti-drip for plastics | |||
| Binder for battery anode | Yes | ||
| Adhesive agents, pigments, addtives |