DL Chemical VLD products are expected to be slightly inferior in adhesive performance due to
their higher density than EVA/POE. With the advantage of excellent physical properties (volume resistivity, water permeability), it is possible to reduce costs and secure raw material supply stability when applied to photovoltaic encapsulant film Pros.
Spec | EVA 28% | D | L | PV0500 | VL8803 | ||
Density | g/㎤ | - | 0.950 | 0.872 | 0.877 | 0.900 | 0.885 |
MI | g/190℃ | - | 18 | 4.8 | 5 | 5 | 3 |
Haze (250㎛) | % | - | 0.72 | 1.20 | 0.81 | 0.98 | 0.95 |
Transmittance | % | >90 | 90 | 90 | 90 | 90 | 91 |
% | - | 86 | 84 | 87 | 84 | 85 | |
WVTR (250㎛) | g/㎡ | <10 | 56.4 | - | 9.7 | 4.9 | 8.5 |
Volume Resistivity | Ω ㎝ | >1*10¹⁶ | 4*10¹⁶ | >9*10¹⁶ | |||
Gel Contents | % | - | 90% | 81% | Bad | 79% | 80% |
Glass Adhesion | - | - | Good | Bad | |||
Resin properties | Unit | Test Method | Value | |||
PV0500 | PV1300 | PV1800 | VL8803 | |||
Density | g/㎤ | ASTM D1505 | 0.900 | 0.900 | 0.900 | 0.885 |
Melt index (190℃, 2.16㎏) | g/10min | ASTM D1238 | 5.0 | 13.0 | 18.0 | 3.0 |
Vicat Softening Temperature | ℃ | ASTM D1525 | 82 | 65 | 63 | 52 |
Melting Temperature | ℃ | ASTM D3418 | 91 | 89 | 89 | 72 |
Additives | - | - | AO | AO | AO | AO |
Volume Resistivity | Ω.㎝ | ASTM D257 | > 10¹⁶ | > 10¹⁶ | > 10¹⁶ | > 10¹⁶ |
WVTR (250㎛ Sheet) | g/㎡ 24h | - | 4.9 | 4.9 | 4.9 | 8.5 |
Additives : AO (Antioxidant) | ||||||
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