Surface Energy Of Acrylic Sheet

Different forms of surface preparation can increase the surface energy which increases wetting.

Surface energy of acrylic sheet.

Therefore the surface tension of the liquid and the surface energy of the material must be matched for the application. Although the tensile strength of acrylite ff sheet is 10 000 psi 69 mpa at room temperature astm d 638 stress crazing can be caused by continuous loads below this value. Some sources quote the critical surface tension in units of mn m which is equivalent to surface energy. The surface energy values of some typical materials are shown in the two tables.

Acrylic acid content increases the surface energy threshold adhesion energy and adhesion hysteresis of psa lns. Spreading a b c where. Acrylic acid aa was co polymerized with 2 ethyl hexyl acrylate 2 eha and 1 6 hexane diol diacrylate hdda to create psa lns. Surface energy values usually have the units of mj m 2.

If the material surface energy is too high then the paint ink or coating may bleed or be difficult to control. 300 lse low surface energy acrylic 300 f bonds well to lse surfaces outstanding adhesion to low surface energy plastics powder coated paints and lightly oiled metals good chemical and humidity resistance. The dynamics of wetting watch video are described below. Historically low surface energy plastics required some type of surface treatment such as abrasion flame corona plasma chemical treatment or primers prior to bonding.

The measured surface energy 27 to 31 mj m 2 was sensible as surmised from their structure. The surface energy of the plastic either allows or prevents wetting the surface.