EVA is used for encapsulation of solar module which is novel thermosetting hot glue. The main row material is ethylene-vinlacetate copolymer which is imported. EVA is tack-free at standard temperature ranges. Being tested by the domestic authority organizations, all performance indexes of JF EVA have attained the like products' international standard.
Properties
★ Excellent light transmittance: The light transmittance is 91%
★ Cross-linking rate (135°C, 20min): 80%-90%
★ Damp Heat Test, UV Test both for 1000hrs: no yellowing, no aging
★ Adhesion with glass and back-sheet: ≥90 N/20mm
EVA solar module glue film technical data
| Item |
Unit |
Standard |
Fast Cure |
| VA Contents |
% |
30 |
30 |
| Melting Point(before cross-linking) |
°C |
72 |
72 |
| Light Transmittance |
% |
91 |
91 |
| Density |
g/cm3 |
0.96 |
0.96 |
| Specific Heat |
J/°C.g |
2.3 |
2.3 |
| Heat Conductivity |
W/mk |
0.3 |
0.3 |
| Glass Transition Temp |
°C |
-40 |
-40 |
| Tensile Strength at Break(after cross-linking) |
Mpa |
20 |
20 |
| Elongation at Break(after cross-linking) |
% |
520 |
520 |
| Water Absorption(20°C,20min) |
% |
0.1 |
0.1 |
| Cross-linking rate(135°C,20min) |
% |
70-75 |
80-90 |
| Adhesive Strength(First EVA-Glass) |
N/20mm |
103 |
96 |
| Adhesive Strength(First EVA-TPT) |
N/20mm |
147 |
120 |
| Light Resistance(UV Radiation 800hr) |
% Retention |
≥95 |
≥95 |
| Damp Heat Test(1000hr at +85°C,85%RH) |
% Retention |
≥95 |
≥95 |
| Shrinkage Rate(120°C,3min) |
MD % |
<2.0 |
<2.0 |
CD % |
<1.0 |
<1.0 |
Side & Grade:
Thickness: 0.3mm-1.0mm Width: 250mm-2200mm. |
EVA Solar Cell Glue Film