How to detect the sealing performance of insulating glass
Fanyu Www.glass.com.cn 2018-05-10 14:19:54
|1. The initial dew point/frost point indicates that the residual moisture in the air layer of the insulating glass is saturated at -40°C; if the insulating glass reaches the initial dew point at a higher temperature, then the insulating glass may be insulated. Sealed structure has gaps. In this case, the hollow glass made of compound rubber strips appeared.
2. The vacuum box test does not pass, indicating that there is a gap in the sealing of the insulating glass, so that the insulating glass does not have an external deflection phenomenon under the vacuum state. This situation mostly occurs in the case of poor manual quality.
3. The ultraviolet irradiation fails and an oil film formed after the volatilization of the organic surface gas is cooled appears on the inner wall of the glass in the hollow glass air layer. The desiccant in the hollow glass does not effectively adsorb the volatile organic solvent in the air layer. This situation tends to occur on hollow glass made of polysulfide rubber that is sealed in one pass and made of 3A or 4A molecular sieve desiccants.
4. High temperature and humidity test failed, indicatingInsulating glassThe phenomenon of water condensation in the air layer is caused by the fact that the insulating glass sealant does not effectively prevent foreign moisture from entering the hollow glass air layer. This situation tends to occur on hollow glass that is sealed with polysulfide rubber in a single pass.
5. The failure of the climate cycle test indicates that there is a phenomenon of water condensation in the air layer of the insulating glass. The reason is that the insulating glass sealant does not effectively prevent the external moisture from entering the hollow glass air layer. This situation is mostly seen on hollow glass made with compound rubber strips.