After nearly 40 years of development, insulating glass market has become mature. With the importance of building energy conservation in China, the quality of insulating glass has been put on the agenda.

Trough aluminum single channel seal, because of its poor sealing performance, easy to enter moisture, resulting in glass condensation, frost, short service life, so this kind of insulating glass is gradually phased out. The last two kinds of insulating glass raw materials are mainly: glass, aluminum strip, insert Angle, butyl glue, two-component polysulfide glue or silicone glue, desiccant, composite sealing rubber strip.

Now we focus on the selection of sealed silicone rubber on the influence of insulating glass.

1, butyl glue:

Butyl adhesive is the first sealing of aluminum strip insulating glass, it is a hot melt adhesive, with a very low water vapor transmission rate (the lowest in the hollow glass adhesive) high viscosity, is the most effective barrier between the aluminum strip side and glass water vapor, but it needs to be heated by a special machine, pressure, extrusion coating on both sides of the aluminum strip.

2, polysulfide glue:

Polysulfide sealant is currently the largest amount of insulating glass sealant, polysulfide sealant has good oil resistance, solubility resistance and sealing. Polysulfide glue to have metal oxide as curing agent using polymerization, the ratio of two components is about 1:10, with the proportion and uniformity of the effect is not too big, so the glue can be machine coated or manual coated.

The selection requirements of polysulfide glue: color difference between two components; Valid for at least half a year; Strong uv resistance; Good fluidity and curing elasticity.

3, silicon glue

Silicone sealant has structural, aging resistance and uv resistance, but its leading weakness is high water vapor transmission rate. Therefore, silicon glue is suitable for strong light and poor environment, such as glass curtain wall, etc., and butyl glue must be used to do the first seal.