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Help Center0.89mm SGP Film for Laminated Glass Safety Glass
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Ionic interlayer(SGP) is a kind of ionic film composed of ethylene and methacrylate copolymer. It contains about 1% metal sodium ion. The bonding force between the film and glass is mainly the result of ionic bond. Therefore, the bonding strength between SGP and glass is much higher than that between PVB film and glass, and its hardness is 100 times stronger than that of traditional PVB ,The strength is 5 times of PVB.
Properties between SGP &PVB
physical parameters |
SGP Interlayer |
PVB Interlayer |
Criterion of Detection |
tear(ing) strength |
135-145 KN/m （0.76mm) |
20-25 KN/m （0.76mm) |
ASTM D-638 |
|
Tensile strength |
40-45 Mpa |
15-20 Mpa |
ASTM D-638 |
|
elongation at break |
280-320% （0.76mm) |
220-250% （0.76mm) |
ASTM-412 |
|
proportion |
0.95 |
1.066 |
ASTM-792 |
Haze |
JC/T 2166-2013 |
||
|
yellow index |
6-10 |
JC/T 2166-2013 |
|
refractive index |
1.5 |
1.5 |
JC/T 2166-2013 |
|
light transmittance |
88% |
87% |
JC/T 2166-2013 |
|
UV barrier |
99.9% |
97% |
GB15763.3-2009 |
|
rate of water content |
0.35-0.55% |
SH/T1770-2010 |
|
|
Knock value |
≥7 |
≥7 |
JC/T 2166-2013 |
thermal contraction |
≤2% |
≤8% |
JC/T 2166-2013 |
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