Surface Energy Of Acrylic Sheet

The surface energy values of some typical materials are shown in the two tables.

Surface energy of acrylic sheet.

Acrylic acid aa was co polymerized with 2 ethyl hexyl acrylate 2 eha and 1 6 hexane diol diacrylate hdda to create psa lns. Sheet sizes from 10 x 10 to 65 x 130. 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. The surface energy of the plastic either allows or prevents wetting the surface.

For glazing applications continuously imposed design loads should not exceed 750 psi 5 2 mpa at 73 f 23 c. 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. If the material surface energy is too high then the paint ink or coating may bleed or be difficult to control.

Different forms of surface preparation can increase the surface energy which increases wetting. The dynamics of wetting watch video are described below. Some sources quote the critical surface tension in units of mn m which is equivalent to surface energy. The first table shows values for low and high surface energy solid materials whilst the second table.

Acrylic acid content increases the surface energy threshold adhesion energy and adhesion hysteresis of psa lns. Spreading a b c where.