[Zhonghua door and window net] when we buy doors and windows, we often worry about such problems: Although hollow glass is soundproof and insulated, it also brings problems, that is, it is easy to fog. So what is the reason for the fog in the hollow glass of doors and windows? What should we pay attention to when purchasing?
When we buy doors and windows, we often worry about such problems: Although insulating glass is soundproof and insulated, it also brings problems, that is, it is easy to fog. So what is the reason for the fog in the hollow glass of doors and windows? What should we pay attention to when purchasing?
Installation personnel level
the basic manufacturing process of hollow glass consists of glass cleaning, molecular sieve filling, butyl sealant coating, laminating, coating the second sealant and other links. Each link is related to the selection of materials, the proficiency of operators and the processing quality.
Glass cleaning
cleaning Glass is the first link of insulating glass production and one of the most important links to ensure the sealing performance of insulating glass. If the oil stagnation and sweat on the glass cannot be thoroughly cleaned, the bonding capacity of sealant on the glass will be greatly weakened, thus reducing the sealing effect of hollow glass. In current production, many manufacturers, especially small manufacturers, often pay insufficient attention to cleaning glass, resulting in a large number of unqualified products flowing into the market.
Desiccant selection
when selecting desiccant, the properties of desiccant must be considered comprehensively. The selection of desiccant is directly related to the type of hollow silicon sealant selected and must be considered in combination.
The failure of edge sealing of hollow glass means that doors and windows lose their due functions. Not only can the energy saving performance of doors and windows not meet the requirements, but also consumers can't see the outside through the foggy air layer, which affects the transparency of hollow glass, and reduce the heat insulation effect. A long period of fog will cause mildew or alkali accumulation on the inner surface of the glass, resulting in white spots, seriously affecting the appearance quality of hollow glass. Thus, choosing high-quality insulating glass sealant is the key to prevent the insulating glass from fogging.
The selected insulating glass sealant should meet the requirements of national or industry standards, and the first and second sealant of double glazing unit should be suitable and cannot be mutually soluble or reactive, otherwise it may lead to glass surface pollution, even aging.
Double glazing unit coating
film combination is the middle part of making double glazing unit. The coating of butyl rubber before the composite determines the comprehensive quality of hollow glass. If there is a gap between the two sealant, it will cause air leakage. At the same time, pay attention to applying the thin second sealant. After installation and use for a period of time, the sealant will form cracks due to the changes of ambient temperature, sun exposure and wind pressure. Even if it is a very small crack, water vapor may slowly enter the glue layer, the formation of fog makes the sealant lose **sealing effect.
Choosing good doors and windows is an important part of home decoration. Remember to choose doors and windows with high quality to avoid doubling troubles in the future.
