HD-SG

Product Name: Strengthened Back Sheet
Product Series: HD-SG Series
Product Code: HD-SG-F/ HD-SG-S / HD-SG-N / HD-SG-T

KEY FEATURES

High Reflectivity: ＞80% (conventional CPC backsheets＞70%)
Low Water Transmission: ＜0.5g/㎡/day（conventional CPC backsheets＜2.0g/㎡/day)
Light yet Rigid: component fragmentation caused by deformation avoids battery micro-cracks

STORAGE

The product has high storage stability and no other special storage requirements. The warranty period is one year under cool and dry storage conditions, and the generality of laminating process should be evaluated after the period.

SPECIFICATIONS

Product Code	Product Code		HD-SG-F	HD-SG-N	HD-SG-S HD-SG-BS	HD-SG-T
Product Structure	Air Coating	20μm, Weather-Resistance	20μm, Weather-Resistance	20μm, Weather-Resistance	25μm, Weather-Resistance
		Middle Layer	500μm, Insulation Property, Water Vapor Barrier Property	850μm, Insulation Property, Water Vapor Barrier Property	700μm, Insulation Property, Water Vapor Barrier Property	950μm, Insulation Property, Water Vapor Barrier Property
		Inner Coating	20μm, High Reflectivity, Great Bonding Performance with EVA	20μm, High Reflectivity, Great Bonding Performance with EVA	20μm, Reflection, Bonding with EVA	25μm, High Reflectivity, Great Bonding Performance with EVA
Thickness			Air Coating: 20±5μm Middle Layer: 500μm±10% Inner Coating: 20±5μm Total Thickness: 540μm±10%	Air Coating: 20±5μm Middle Layer : 850μm±10% Inner Coating: 20±5μm Total Thickness: 890μm±10%	Air Coating: 20±5μm Middle Layer : 700μm±10% Inner Coating: 20±5μm Total Thickness: 740μm±10%	Air Coating: 25±5μm Middle Layer : 950μm±10% Inner Coating: 25±5μm Total Thickness: 1000μm±10%
Color			White / Black

CERTIFICATIONS

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NO.	Test Item		Test Item	Unit	Test Method	Product Code
NO.	Test Item			Unit	Test Method					HD-SG-F	HD-SG-N	HD-SG-S HD-SG-BS	HD-SG-T
1	Nominal Thicknes	Nominal Thicknes		μm	GB/T 13542.2-2021	540	890	740	1000
2	Thickness Deviation			-	GB/T 13542.2-2021		±10%	±10%	±10%	±10%
3	Width Deviation	Width Deviation		-	GB/T 13542.2-2021	+5, -0	+5, -0	+5, 0	+5, 0
4	Tensile Strength	MD	MPa	GB/T 13542.2-2021	≥150	≥150	≥150	≥300
4	Tensile Strength			GB/T 13542.2-2021	TD	MPa		≥150	≥150	≥150	≥300
5	Bending Strength	MD	MPa	GB/T 2567-2008	-	-	≥300	≥300
5	Bending Strength				TD	MPa		-	-	≥100	≥100
6	Bending Modulus	MD	MPa			-	-	＞5000	＞7000
6	Bending Modulus				TD	MPa		-	-	＞3000	＞4000
7	Heat Shrinkage	MD	%	GB/T 13542.2-2021	≤0.8	≤0.8	≤0.8	≤0.3
7	Heat Shrinkage			GB/T 13542.2-2021	TD	%		≤0.8	≤0.8	≤0.8	≤0.3
8	Coating Adhesion	Air Side	-	GB/T 9286-2021	0 Class	0 Class	0 Class	0 Class
8	Coating Adhesion			GB/T 9286-2021	EVA Side	-		0 Class	0 Class	0 Class	0 Class
9	Boiling Watertreatment (boil for 24h)	Appearance	-	GB/T 17748-2016	No delaminatio, no bubble, no peeling	No delaminatio, no bubble, no peeling	No delaminatio, no bubble, no peeling	No delaminatio, no bubble, no peeling
9	Boiling Watertreatment (boil for 24h)			Coating Adhesion	-	GB/T 9286-2021	0 Class	0 Class	0 Class	0 Class
10	Peeling Strength with EVA (Initial)	Transparent EVA	N/cm	GB/T 2790-1995	≥60	≥60	≥60	≥60
11	Peeling Strength with Silica Gel			N/cm	GB/T 1040-2006	≥20	≥20	≥20	≥20
12	Reflectivity (White) 400-1100nm			%	GB/T 2410-2008	≥75	≥75	≥75	≥75
13	Breakdown Voltage			KV	GB/T 13542.2-2021	≥8	≥8	≥8	≥8
14	Partial Discharge	Partial Discharge		VDC	IEC 60664-1-2007	≥1500	≥1500	≥1500	≥1500
15	DTI			μm	IEC TS 62788-2:2017	≥300	≥300	≥300	≥300
16	Water Vapor Transmission Rate	38℃*90RH%	g/m2•d	GB/T 21529-2008	≤1	≤1	≤1	≤1
17	PCT Aging Treatment (121℃, 2 ato, 48h)			△b	GB/T 13542.2-2021	△b≤2.0 Elongation at Break≥10%	△b≤2.0 Elongation at Break≥10%	△b≤2.0 Elongation at Break≥10%	△b≤2.0 Elongation at Break≥10%
18	Damp Heat (1000h) UV Aging (120kwh) Thermal Cycle(200) Humidity-Freeze (10)	Damp Heat (1000h) UV Aging (120kwh) Thermal Cycle(200) Humidity-Freeze (10)		△b	IEC 61215-2021	No brittle fracture, blistering, delamination△b≤2.0	No brittle fracture, blistering, delamination△b≤2.0	No brittle fracture, blistering, delamination△b≤2.0	No brittle fracture, blistering, delamination△b≤2.0

HD-SG

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