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eva adhesive film
eva adhesive film

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1)solar cell EVA encapsulating filmfor encapaulating solar modules.
2)Excelent UV
3)damp heat resistance
4)long term perform

Our eva is extremely high transparency, suitable cross link rate, small shrinkage, good humidity & UV light resistance. 

   EVA film is based on EVA resin which basis to (ethylene and vinyl acetate copolymer resin), by adding a variety of modified additives, through melt extrusion made of the rmosetting hot melt film. Not be sticky in normal temperature, easy to operation. Produced by thermal lamination with the bonding enhanced crosslinking chemical reactions, making silicon wafers, glass, TPT multilayer material consisting of one firm bond as the product of solar panels, in actual outdoor applications up to 25 years life. A large number of applications at home and abroad well-proven solar panels, EVA film is the optimum cost performance, it is difficult to alternative packaging materials for solar cells.

 

 

Our EVA film's advantages are as follow:

·       High Transmittance

·       High Mechanical Strength

·       High Adhesion Strength

·       High Photo- thermal Stability

·       High Cross-linking rate

·       User-friendly

 

 

Performance

Unit

Test method

EV1050G1

(Fast curing)

UF-EV1050G1

(Ultra-fast curing)

UE-EV1050G1

(Zero shrinkage)

Density

g/cm3

ISO 1183

0.96

0.96

/

Melt flow rate

g/10min

ASTM D1238

30

30

/

Transmittance

%

GB/T2410-1980

92

92.0

/

Haze

%

GB/T2410-1980

0.26

0.21

/

Peeling strength

N/cm

GB/T2790-1995

70(with glass)

75(with TPT)

73(with glass)

76(with TPT)

55(with TPT)

Crosslink degree

%

Lushan

 test method

85

88

/

Shrinkage Rate(120 C, 3min)

%

Lushan

 test method

MD ≤4

 TD ≤0.2

MD ≤4

TD ≤0.2

MD=0

TD=0

%

Sanvic

 test method  

MD ≤1

  TD ≤ 0.1

MD ≤1

TD ≤0.1

MD=0

TD=0

Tensile strength

MPa

ASTM D-638

40

56

65

Elongation at break

%

ASTM D-638

518

633

488

Young’s Modulus (cured)  

Mpa

ASTM D-638

4.5

4.8

4.0

Hardness

Shore A

Shore D

GB/T531—1999

GB/T531—1999

76

23

74

21

90

27

Water Absorption

%

GB/T1034-1998

0.02

0.01

0.02

Volume Resistivity

Ω.cm

GB/T1410-2006

1.57×1014

1.68×1014

2.78×1014

UV Light resistance

(280nm~385nm, 15KWh·m-2)

YI.

GB2409-1980

≤0.4

≤0.4

≤0.4

Heat/humidity resistance

(85°C/85RH, 2000h)

YI.

GB2409-1980

≤2

≤2

≤2

Artificially-accelerating aging

(3000hour, Xenon light,63°C, 65%)

YI.

GB2409-1980

≤2

≤2

≤2

Resistance to temperature

(from -40°C to 85°C,50cycles)

YI.

GB2409-1980

≤2

≤2

≤2

Resistance to temperature and Moisture

(from -40°C to 85°C,85%,10cycles)

YI.

GB2409-1980

≤2

≤2

≤2

 

 

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