Sản phẩm đã cho vào giỏ hàng
DuPont™ DryFilm dispersion products are used in three major areas as dry lubricants, releaseagents, and additives to other compounds to improve lubricity and retard fouling.
Dry Lubricant
The low coefficient of friction that is characteristic of DuPont™ DryFilm polymer translates to superior effectiveness as a dry lubricant. DryFilm dispersions are the lubricant of choice for electric switches, window hardware, military equipment, and a range of other applications for which smooth, repeated movement is essential. DryFilm coatings improve abrasion resistance, extending the wear life of the product. They also provide dry lubrication as an inclusion in plastic and metallic bearing applications. DryFilm coatings can be infused into electroless nickel-coated components to improve corrosion resistance while providing lubrication.
Release Agent DuPont™ DryFilm dispersions are used extensively as release agents in processes involving the molding of rubber and plastic parts. The extreme stability of DryFilm dispersion means that it is virtually unaffected either by the mold itself or by the material
being molded
In commercial applications, air-dried coatings of DryFilm dispersions typically provide multiple releases between applications, even with difficult-to-release materials such as epoxy resins. When DryFilm dispersions are fused onto the mold, they provide added durability and release properties. DryFilm dispersions are superior mold-release agents for a range of industrial applications and substances, offering substantially longer mold-release performance than either oils or silicones. Sample applications include:
• Molded rubber and plastics
• Chutes and slides
• Plastic laminates
• Conveyor belts
• Laminated wood
• Paper, pressure-sensitive labels
• Resin releasing
Application
DryFilm dispersions can be applied in any of several methods, including dipping, wiping, or brushing onto a prepared surface or by spraying (air sprays, air-less sprays, and aerosols). Containers of DryFilm lubricant formulations should be agitated prior to opening, because the active ingredient can settle during storage. Applications can be air-dried, and, if greater adhesion is desired, coated surfaces can be heat-fused.
Surface Preparation: Surface preparation is important for all application methods. All
surfaces should be clean and dry before DryFilm dispersions are applied. Controlling surface roughness improves coverage, especially in air-dried applications; a smooth surface also
improves results in mold-release applications. Properly applied, DryFilm dispersion coatings are not affected by water or other materials with which they come in contact
Dilution
The extendability of DuPont™DryFilm dispersion products is a major asset, because it allows the user to customize the dispersion for ease of application and adequacy of coverage.
Each DuPont™ DryFilm dispersion product can be extended with additional amounts of the base solvent. DuPont™ DryFilm RA is furnished in a dispersion that is 15% solids by weight; DuPont™ DryFilm RA/W is 20% solids by weight. DuPont™DryFilm RA/IPA is 25% solids by weight. Table 2is a dilution table showing the total parts of DuPont™DryFilm dispersion and solvent required to achieve a range of final concentrations by weight.
Application Methods:
Dipping is useful for coating small parts, coils of wire, and items of varied shapes. The pieces are dipped in a dilute DuPont™DryFilm dispersion; coating levels are determined by the concentration of solids, rate of withdrawal, and number of applications. A single dip is adequate for most uses
