Applications in photovoltaic field

1、Solar cell carriers

The solar cell carriers and accessories based on PVDF(Polyvinylidene fluoride) are designed for square solar cell silicon wafers, with the sizes of 103×103mm, 125×125mm, 150×150mm and 155×155mm. The carriers intended for processing of solar cells can be used in most wet processing systems, and support the suitability for automatic handling and manual handling.

With high rigidity and strength, precise control of dimension and weight, the carries show excellent durations in wet processing systems at a temperature up to 150℃. Based on high purity PVDF, the carriers have no effect on the purity of washing chemicals. Design of the carriers can aviod scratch on the surface of silicon wafers during wet process.

Wafer size，mm	103×103	125×125	150×150	155×155
Capacity，piece	25	25	25	25
Length，mm	143.5	143.5	144	144
Width，mm	128	152	179	185
Height，mm	123	149	178	184

2、Backing sheet for photovoltaic modules

With excellent strength, weather resistance, UV resistance, and moisture barrier properties, the backing sheet is used to protect solar cells of photovoltaic modules.

The product is composed of three laminations(PVDF/PET/PVDF). The outer lamination of PVDF show good resistance to weather and UV, the middle lamination of PET show excellent moisture barrier property, and the inner lamination of PVDF show good adhesion to EVA.

Item	Unit	Test Method	Value
1、Sheet structure			PVDF/PET/PVDF
Thickness of PET	μm	GB/T13541-92	250
Thickness of fluorine containing lamination	μm	GB/T13541-92	30
Total thickness	μm	GB/T13541-92	340
2、Peel strength
EVA/Sheet, normal condition	N/cm	ASTM D-1876 180°Peel	≥40
EVA/Sheet, 85℃ & 85 %RH	N/cm	ASTM D-1876 180°Peel	≥40
EVA/Sheet, after UV treatment	N/cm	ASTM D-1876 180°Peel	≥40
PET/PVDF, normal condition	N/cm	ASTM D-1876 180°Peel	≥6
condition
PET/PVDF, boiling water, 24h	N/cm	ASTM D-1876 180°Peel	≥6
PET/PVDF, 85℃& 85%RH	N/cm	ASTM D-1876 180°Peel	≥5
PET/PVDF, after coolheat cycle	N/cm	ASTM D-1876 180°Peel	≥5
PET/PVDF, after vapour freezing	N/cm	ASTM D-1876 180°Peel	≥5
PET/PVDF, after UV treatment	N/cm	ASTM D-1876 180°Peel	≥5
Sheet/silica gel, 85℃& 85%RH	-	15Kg/30min	can not peel off
3thermal shrinkage, MD/TD	%	ASTM D-1204，150℃/30min	≤1
4、Thermal weight loss	%	GB/T13541-92	≤0.25
5、Vapour permeation	gm/m2.day	ASTM F-1249，38℃/100%RH	≤0.30
6、Disruptive voltage	KV	ASTM D-149	≥18
7、Partial discharge	VDC	IEC60664-1	≥1000
8、Yellow index （UV 1000h）	-	ASTM E313-05	△b≤2
9、Tensile strength	MPa	ASTM D-882	≥40