When acid etching for bonding,it is desirable to have a _____ surface energy and a _____ angle of contact.

Question

Quizplus · Accepted Answer

When acid etching for bonding,it is desirable to have a high surface energy and a low angle of contact.The high surface energy helps attract the resin to the etched surface.Surfaces that are poorly wet will cause beading of the liquid,similar to water on a newly waxed car.On an unwaxed car,the water easily spreads out and has a low angle of contact.Bonding agents are usually not very viscous (thick),so they will flow readily and wet the etched surface.

When Acid Etching for Bonding,it Is Desirable to Have a _____