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the difference bewteen SGP and PVB
Edit: Judy  Date: 2020-06-22
  •                              The difference bewteen SGP and PVB

Early laminated glass generally used PVB film laminated glass; because PVB film was originally developed for automotive glass rather than for the building curtain wall industry, although it has been used in the construction engineering industry for many years, it is widely used and has achieved good safety effects However, due to the elasticity, softness and small shear modulus of PVB film, there will be relative slippage between the two pieces of glass after being stressed, the bearing capacity is reduced, and the bending deformation is large. At the same time, the exposed edges of the PVB film laminated glass are susceptible to moisture, open glue, and long The yellowing phenomenon is easy to occur with time, so PVB film laminated glass can be used for general glass curtain walls, and is not suitable for high-performance glass curtain walls.

The shear modulus of the ionic film SGP is more than 50 times that of PVB, and the tear strength is 5 times that of PVB. When the laminated glass produced by the ionic film is stressed, there is basically no slip between the two glasses; Sheet 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 laminated glass produced by PVB, the performance of laminated glass produced by SGP film is more superior because of the following properties;

1. It has high bonding ability to glass and strong tear strength, which can prevent the glass from breaking and flying.

2. Has a strong protective ability, can prevent natural disasters and human damage, and has sufficient resistance to strong winds, earthquakes, violence, theft, etc.

3. Can withstand the sudden impact of the indoor personnel, prevent the glass from scattering or the whole falling out, and prevent the indoor personnel and objects from flying out and falling.

4. There is enough residual bearing capacity, and the whole piece will not fall off when the glass breaks and then bends.

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

6. Can withstand the influence of ultraviolet rays, water vapor and external climate change, long-term use will not cause yellowing and discoloration.

 Different Properties bewteen SGP and PVB:


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