The early laminated glass was generally made of PVB film; since PVB film was developed for automotive glass rather than for the building curtain wall industry, although it has been used in the construction industry for many years, it has been widely used and has achieved good safety effects. However, because PVB film is elastic, relatively soft, and has a small shear modulus, there will be relative slippage between the two pieces of glass after the force is applied, the bearing capacity will be reduced, and the bending deformation will be large. It is prone to yellowing, so PVB film laminated glass can be used for general glass curtain wall, not suitable for high-performance glass curtain wall.

The shear modulus of ion film SGP is more than 50 times that of PVB, and the tear strength is 5 times that of PVB. A piece of glass is like a piece of glass, and its bearing capacity is twice that of PVB laminated glass. Under the same load and the same thickness, the bending of SGP laminated glass is only 1/4 of that of PVB laminated glass.

Compared with the laminated glass produced by PVB, the performance of the laminated glass produced by SGP film is more superior, because it has the following properties:

1. It has high bonding ability to glass, strong tear resistance, and can prevent glass from shattering and scattering.

2. It has strong protection ability, can prevent natural disasters and human damage, and has sufficient resistance to strong wind, earthquake, violence, theft, etc.

3. It can withstand the sudden impact of indoor personnel, prevent the glass from scattering or falling out as a whole, and prevent indoor personnel and items from flying out and falling.

4. There is enough residual bearing capacity, and the glass will not fall off when it is bent after being broken.

5. The SGP film has enough shear modulus to make the entire section of the laminated glass bend, improve the bearing capacity and bending rigidity of the glass, and reduce the thickness of the glass and the self-weight of the glass.

6. It can withstand the influence of ultraviolet rays, water vapor and external climate change, and there will be no yellowing and discoloration after long-term use.

-转自中国玻璃网