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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.
Technical data:
The type of product | fast solidifying type | normal type | |
Item | Unit | (SMQF-M1) | (SMQF-M2) |
fusing index(before solidifying) | g/10min | 30 | 30 |
soften point(before solidifying) | °C | 58 | 58 |
Density | g/cm3 | 0.96 | 0.96 |
specific heat | J/°C,g | 2.30 | 2.30 |
tensile strength | kg/cm2 | 260 | 260 |
Extensibility | % | 420 | 420 |
Lucifuging rate(after solidifying) | % | more than 91.0 | more than 91.0 |
water absorption ratio(20°C,24h) | % | < 0.01 | less than 0.01 |
shrinkage ratio(test before solidifying,120°C,3min) | % | <3.0 | <3.0 |
total degree of cross linking(120°C,15min and 35min) | % | ≥85.00 | ≥85.00 |
peel strength between rubber film and glass (140°C,20min after solidifying) | N/cm | more than 30 | more than 30 |
peel strength between rubber film and TPT(140°C,20min after solidifying) | N/cm | more than 40 | more than 40 |
against ultraviolet light aging(uv,1000hr) | % | more than 90 | more than 90 |
against mugginess aging(+85°C,85%humidity level 1000hr) | Luminousness | ≥85% | ≥85% |
conversation rate of luminousness | ≥95% | ≥95% | |
yellow index (∠YI) | <2 | <2 | |