Surface Modifier

Definition - What does Surface Modifier mean?

Surface modifiers are substances that are added to other ingredients, often protective coatings, to change their physical properties. Surface modifiers are used to avoid coating surface defects by repelling water and oil, as well as providing stain resistance, non-adhesiveness, anti-blocking and slipperiness to the solid surface. Surface modifiers provide fast and effective coating protection for electronics and other manufacturing and assembly solutions.

Corrosionpedia explains Surface Modifier

Surface modifiers are additives used in paint to prevent paint surface defects. They provide functions to repel water and oil, and to prevent the adherence of fingerprints or stains to a coating film surface. They have excellent durability and can be used to protect the surface of optical films and the bodies of electronic and other devices. Surface modifier coating protects against moisture and corrosion — rapidly, economically and safely.

Surfactants are mainly known as additives for improving dispersion properties of pigments and extenders. However, they also can be effective additives for resolving surface problems like leveling and substrate wetting. Hydrocarbon surfactants impact the leveling and wetting properties in coatings formulations which are key points in avoiding paint surface defects. Therefore surfactants can be used as surface modifiers.

Features of surface modifiers include:

  • Strong water repellency
  • Strong repellency of both oils and organic solvents
  • Prevents adherence of various kinds of stains
  • Improves coatability (wettability, smoothness)

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