thermoset po film
tf4 & tf8 & tfw-8015
product introduction
f·rst® tf series film are a cross linking type of polyolefin encapsulant material developed by hangzhou first pv. with good moisture barrier properties, weather resistance, optical transmittance, tf-series products can protect module working normally at high humidity environment, and provide prolonged pid-resistance for solar module.
f·rst® tfw-8015 po film is white po product, specifically designed for the backside encapsulation of normal pv modules and double-glass pv modules. it is used between cells and rear materials. f·rst® tfw-8015 po is characterized as highly reflective. its unique optical property can increase the effective utilization of light ultimately enhancing the power output of pv modules.
performance parameter
| properties | test method | units | tf4 | tf8 | tfw-8015 | |
| general gram weight | fst method | g/m2 | 410±20 | 410±20 | 410±20 | |
| length | fst method | m/roll | 130 | 130 | 130 | |
| width | fst method | mm | customization0/ 7 | customization0/ 7 | customization0/ 7 | |
| density | astmd792 | g/cm3 | 0.88±0.02 | 0.88±0.02 | 0.94±0.02 | |
| melting range | fst method | ℃ | 40-80 | 40-80 | 40-80 | |
| shrinkage rate(120℃,3min) | gb/t29848 | md% | <2.0 | <2.0 | <3.0 | |
| td% | <1.0 | <1.0 | <2.0 | |||
| uv-cutoff wavelength | fst method | nm | -- | 360 | 370 | |
| transmittance | 1100nm-380nm | gb/t29848 | % | >90 | >90 | <10 |
| 380nm-290nm | % | >70 | <30 | <10 | ||
| reflectance（1100nm-380nm） | fst method | % | - | - | >90 | |
| gel content | gb/t29848 | gel% | >60 | >60 | >60 | |
| volume resistivity | iec62788-1-2 | ω·cm | >1.0×1015 | >1.0×1015 | >1.0×1015 | |
| wvtr | astmf1249 | g/m2.24h | <5.0 | <5.0 | <5.0 | |
| strength of peeling from glass | gb/t29848 | n/cm | >60 | >60 | >60 | |
| strength of peeling from tpt | gb/t29848 | n/cm | >40 | >40 | >40 | |
