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PSA101-Slide17

Adhesion is the molecular forces of attraction between unlike materials. The strength of attraction is determined by the surface energy of the material. The higher the surface energy, the greater the molecular attraction. The lower the surface energy, the weaker the attractive forces. Greater molecular attraction results in increased contact between an adhesive and substrate. In other words, with a high surface energy material, the adhesive can flow or wet out to assure a stronger bond similar to the automobile example stated above.

PTM Published on: 2011-10-13