Wetting

Definition

Wetting is the thorough impregnation of a material by a liquid. The more viscous a fluid, and the higher its surface tension, the more difficult it is for the liquid to "wet" materials. Certain additives, such as water softeners, reduce surface tension or viscosity and improve wetting properties, allowing the material to flow better.

Purpose

The purpose of wetting is to ensure that liquids can penetrate and spread across surfaces effectively, which is essential for processes such as cleaning, coating, and adhesive application.

Examples of Use

• Painting: Ensuring paint wets the surface properly for even coverage and adhesion.
• Cleaning: Achieving thorough wetting of surfaces to remove dirt and grime effectively.
• Adhesives: Ensuring adhesives wet surfaces well to form strong bonds.

Related Terms

• Viscosity: A measure of a fluid's resistance to flow.
• Surface Tension: The property of a liquid's surface that resists external force.
• Surfactant: A substance that reduces surface tension, improving wetting.

Notes

Wetting is influenced by the properties of both the liquid and the material being wetted. Additives and treatments can enhance wetting for specific applications, improving the performance of products and processes.

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