Since the beginning of the hollow glass in China in the 1960s, its production has experienced double glass, simple double glass, manual single-channel sealing, double-channel sealing and the process of composite rubber-type insulating glass which has appeared in recent years. After nearly four decades of development, the market has gradually matured. With China's emphasis on building energy efficiency, the quality of insulating glass has been put on the agenda.
The main factors affecting the quality of insulating glass are : (1) the selection of raw materials; and (2) the manufacturing process. Here mainly talk about the selection of insulating glass raw materials. The quality of the raw materials will directly affect the quality and service life of the insulating glass.
At present, there are three main types of insulating glass in China : (1) slot aluminum single-channel sealing; (2) slot aluminum double-channel sealing; (3) composite sealing strip-type insulating glass. The single-channel sealing of the slot aluminum is gradually eliminated due to its poor sealing performance and easy entry into the moisture, resulting in condensation and frosting of the glass and short service life. The raw materials of the latter two kinds of insulating glass are mainly: glass, aluminum strip, gusset, butyl rubber, two-component polysulfide or silicone silicone, desiccant, composite sealant strip. Let's briefly talk about the selection of these raw materials.
So how to choose hollow glass raw materials? Xi'an Yaoxin Glass ( http://yaoxinboli.glass.com.cn ) mainly has the following aspects:
The general requirements for the front and the frame should be that the strength is good, the heat insulation performance is good, and the various shapes are easy to recycle and environmentally friendly.
Second, glass should promote the use of insulating glass and the use of Low-E type insulating glass should be promoted in the north. Sun-coated glass should be promoted in areas where solar radiant heat is dominant in the south. Developed countries abroad have basically not used single glass and white glass because they are not conducive to energy saving and improving the living environment.
Third, the use of double-channel seals and hollow glass insulating glass spacers made of polysulfide insulating glass-glued glass should be continuous angled. If the four-corner type is used, the joint must be sealed with butyl rubber. deal with. Single-channel sealed insulating glass is not suitable for insulating glass with silicone structural adhesive for secondary sealing because their service life is relatively short.
Fourth, another so-called double glass is not available. Some window types are low in price in order to reduce the heat transfer coefficient. Double-glass is used to separate the two layers of glass or to be attached to the window with ordinary sealing glue. The molecular sieve does not absorb moisture. Generally, the sealant is not resistant to aging. It takes a long time to get into the dust and can't be wiped. The sight is extremely unsightly. Because the insulating glass made of polysulfide insulating glass glue is sealed for only five years if it is sealed with a single pass, it is not allowed to be used in the specification of the glass curtain wall. It is. One of the more critical aspects of construction engineering is the service life, which is durability. It is not advisable to use this double glass as a temporary expedient.
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