S.N. |
Item |
Specification |
1 |
State |
Colorless transparent thick liquid |
2 |
Refractive index n 20D |
1.47 – 1.55 |
3 |
Sensitive (hardening ) wavelength |
Below 320nm |
4 |
Adhesion strength kg/cm2 |
≥90 |
5 |
Transmissivity at visible light |
≥90% |
6 |
Cleanliness |
It is allowed to have dust particles or fiber not more that 10 pieces in 5cm3 glue |
7 |
Water resistance |
The glue layer remains unchanged after immersion at room temperature for 24 hours. |
8 |
Solvent ( acetone) resistance |
The glue layer remains unchanged after immersion at room temperature for 4 hours. |
9 |
High and low temperature performance |
The glue layer remains unchanged at temperature of 80℃ for 2 hours. |
The glue layer remains unchanged at temperature of -40℃ for 2 hours. |
10 |
Temperature shock performance |
The glue layer remains unchanged at temperature of 55℃ and -35℃, cycling 3 times, 1 hour for each time.. |
11 |
Shock performance |
When dropping form 2 meters to the cement floor, lenses are broken, but glue layer remains unchanged.. |