hangzhou first applied material co.,ltd.-pg电子直营网

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special functional type backsheet—transparent/1500v high voltage

product series

model  structure   thinckness   color 
bef-402 po/f-coating/pet/f-coating  200μm/5μm/250μm/15μm  white /black
bec-301t  f-coating/pet/f-coating  15μm/250μm/15μm  transparent 


introduction

firstbacksheet®  bef-402 is a backsheet with more than 1500vdc partial discharge, which consist of po layer, hydrolysis resistant pet layer and two fluorine coating layers. bef-402 has excellent insulation and moisture barrier property, which can  meet the application  requirement of high voltage pv modules. 
firstbacksheet®  bec-301t is transparent designed as tri-layer structure, which not only has high light transmittance and low haze, but also has excellent insulation performance and long term weather durability property. bec-301t can be used in building and double power modules with the advantage in lightweight and lamination condition. 


basic property

property quoted standard unit bef-402 bef-402b bec-301t
color  / / white black transparent
peeling strength with eva  gb/t 2790-1995 n/10mm   >100   >100   >100
water vapor transmission rate   astm f1249-2006 g/m2.24h   <1.5   <1.5   <1.5
comparative tracking index iec 60112-2009 v >600 >600 400
partial discharge (in air) iec 60664-1 vdc >1600 >1600 >1000
transmittance(400-700nm) gb/t 29848-2013   <5.0   <5.0   >85
haze(400-700nm) gb/t 29848-2013 / / <25 



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