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==Etymology==
==Etymology==
French or [[Latin]]; French adhésion, from Latin adhaesion-, adhaesio, from adhaerēre
French or [[Latin]]; French adhésion, from Latin adhaesion-, adhaesio, from adhaerēre
*Date: [http://www.wikipedia.org/wiki/17th_Century 1624]
*Date: [https://www.wikipedia.org/wiki/17th_Century 1624]
==Definitions==
==Definitions==
*1 : steady or firm attachment : adherence
*1 : steady or firm attachment : adherence
The strength of the adhesion between two materials depends on which of the above mechanisms occur between the two materials, and the surface area over which the two materials contact. Materials that wet against each other tend to have a larger contact area than those that do not. Wetting depends on the surface energy of the materials.
The strength of the adhesion between two materials depends on which of the above mechanisms occur between the two materials, and the surface area over which the two materials contact. Materials that wet against each other tend to have a larger contact area than those that do not. Wetting depends on the surface energy of the materials.
Low surface energy materials such as polyethylene, polypropylene, Teflon, and Delrin are difficult to bond without special surface preparation.[http://en.wikipedia.org/wiki/Adhesion]
Low surface energy materials such as polyethylene, polypropylene, Teflon, and Delrin are difficult to bond without special surface preparation.[https://en.wikipedia.org/wiki/Adhesion]
[[Category: Chemistry]]
[[Category: Chemistry]]