EVA film for photovoltaic cell encapsulation

This EVA film is specailly developed for solar panel encapsulation. It plays the roll of connecting various components and protect them from changeable outdoor environment damage , with strong temperature & humidity resistance and excellent anti – aging performance .

PID is the the commonest and biggest problem during photovoltaic module encapsulation. ASQS1&ASQS2 is specially developed to overcome this problem from the side of eva film .

Due to its excellent Anti – PID performance, its module can withstand PID testing of 194 hours with condition of – 1500 V , 85 ℃ and 85% RH.

(ASQS1 is used on the glass side and ASQS2 used on the TPT side )

Features of solar eva film

Good optical performance, which can maximize the light coming throungh.
Good Anti – PID performance
Fast curing . 20 – 30% laminating time will be saved compared with traditional solar eva film
Less energy consuming during lamination

Anti – PID performance testing

Test condition

Result

Anti- Pid aging testing

（Glass + ASQS1 EVA + Silicon cell+ ASQS2 EVA + Backsheet）

IEC62804, -1500V, 85℃, 85%RH

Module with ASQS1 & ASQS2 under – 1500V & 85℃& 85%RH for 96 H,

Degradation ≤ 0.72% ；

Module with ASQS1 & ASQS2 under – 1500V & 85℃& 85%RH for 192 H,

Degradation ≤ 0.72% ；

Technical data

Item

ASQS1

ASQS2

Thickness（mm）	0.45	0.45
Gram weight	370	370
width（m）	customized	customized
Length （m）	150	150

VA content	28.5%	28.5%
Melting point (before cross lingking )	67℃	67℃
Melting Index (before cross lingking )	25g/10min	25g/10min
Gel content	88%	88%
Shrinkage rate	MD ≤ 3% TD ≤ 1.5%	MD ≤ 3% TD ≤ 1.5%

Transmittance	380 – 1100nm ≥ 92.5% 280 – 380nm ≥ 87.5%	380 – 1100nm ≥ 92% 280 – 380nm ≥ 7%
UV cut	0	99%
Peeling strength with glass	≥ 100 N /CM	≥ 100 N /CM
Peeling strength with TPT	≥ 60 N /CM	≥ 60 N /CM
Volume resistivity	2.2 x 10^5Ω.cm	2.2 x 10^5Ω.cm