[China Glass Network] Continuous moist air can make the glass moldy, but the temperature of mildew in the glass is very slow under normal temperature conditions. Usually it takes several months, and it rarely lasts in normal use environment. Months of humid air, so the glass exposed in the air will not be mildewed. Usually the mildew of the glass occurs during the overlapping storage of the glass, and the glass is rainy in the wet warehouse or in the open air. In general, raw glass without tempering is more mildly mildew than glass that is tempered. Life expectancy of tempered glass Physical tempering is to heat and quench the glass, which changes the structure between the molecules and molecules inside the glass; chemical tempering is used to ion exchange the surface structure of the glass at high temperatures; both methods are used to change the glass for a long time. The microscopic structure of the data. Therefore, unless there is a high-temperature chemical effect, the characteristics of the tempering will not attenuate or change with the change of time under normal use conditions. Life expectancy of insulating glass The insulating glass is a combination of a glass substrate, a distance frame (aluminum strip), a desiccant (molecular sieve), and a sealing material (butyl rubber, polysulfide rubber or structural rubber). In the construction of the insulating glass system, the glass is very stable. In the glass substrate, we have previously mentioned the problem of not having to think about aging under the condition of normal use; the standard aluminum hollow strips are all anodized by appearance. The physicochemical function of the anodized aluminum strip is very stable under normal conditions. Even if the aluminum strip has no external anodized, the oxidation condition will cause the aluminum strip to lose its luster during the application process, but this has no significant effect on the function of the aluminum strip itself. For the insulating glass, we should see that the value of the hollow system construction is that the hollow glass with closed and boring cavity can play the role of heat insulation and sound insulation. Due to changes in ambient temperature, the gas in the hollow cavity is always in a state of expansion or contraction, so that the insulating glass sealing system is always under stress. The ultraviolet, water and moisture in the environment will accelerate the aging of the sealing system. This causes the water vapor to accelerate into the hollow cavity. When a large amount of water vapor is present in the hollow glass cavity, the insulating glass fails, and the failure of the insulating glass means that the service life of the insulating glass is stopped. To ensure that the insulating glass does not fail, it is a desiccant and sealing material. For the life of the insulating glass, the Chinese glass company gave the concept of a 10-year warranty period with reference to the US standard; in the insulating glass national standard GB/T11944-2012, the first reference to the life of the insulating glass was made. The concept of "expected life expectancy of insulating glass should be greater than 15 years" is proposed. In fact, the lifespan of the insulating glass has a close relationship with the selection and processing technology of the insulating glass, and it is also affected by many factors such as the composition of the insulating glass and the operating environment, which is difficult to quantify. For the insulating glass that has been mounted on the wall, a relatively simple measure is actually the dew point or distance layer air humidity. Lifetime of Low-E glass The life of Low-E glass depends primarily on the life of the hollow seal system at its location. We know that the primary constituents of the Low-E film are metals, alloys, metal oxides and metal nitrides. Metal nitrides are commonly used as protective layers in film constructions and their function is very stable. The metal oxide and alloy layers usually interface as a dielectric layer in the film layer to the silver layer and the protective layer, and their properties are relatively stable. The silver layer in Low-E is relatively lively, but its oxidation is conditional in the demand for water vapor. Therefore, only the insulating glass does not fail, and it is not necessary to think about the lifespan of the Low-E film layer alone. Lifetime of laminated glass Laminated glass is a composite glass product in which two or more layers of organic polymer center film are sandwiched between glass and treated by technology to make the glass and the central film adhere together for a long time. The laminated glass will be stuck to the film even if the glass is broken, which is useful for preventing the occurrence of debris and penetrating and falling, and ensuring personal safety. The life of a laminated glass depends primarily on the raw material of the center layer of the interlayer. Normally, wet laminated glass and EVA laminated glass are primarily used for indoor partitions and are not suitable for building doors or windows or curtain walls. Guanhao doors and windows tell you that wet laminated glass will accelerate aging under sunlight, and it will appear yellow after 1-2 years. In 2-3 years, it will continuously show degumming bubbles, ice flowers and fogging. In general, wet laminated glass ages much faster than EVA laminated glass. EVA laminated glass prevents direct sunlight from being used indoors for more than 10 years. PVB and SGP laminated glass, which is commonly used as a door or window or curtain wall, has much better aging resistance. The typical failure of laminated glass PVB and SGP is the opening of the glue. Opening the glue means that the glass and the distance layer are disengaged, and the safety characteristics of the laminated glass are lost. For the life of PVB and SGP laminated glass, there are currently no relevant standards and standards in China. At present, domestic glass processing companies usually refer to foreign PVB and SGP suppliers for information on 5-7 years of commercial quality warranty. In fact, the lifespan of PVB and SGP laminated glass is greatly affected by the thickness of the intermediate layer, the quality of the laminated glass substrate, and the manipulation of the laminated glass technology, in addition to the influence of the central layer material.
Woven fabric is a loom in the form of throwing, the yarn is formed by the interlacing of warp and weft, and its organization generally has three categories: plain weave, twill and satin and their changes. This kind of fabric is firm, straight, and not easily deformed due to the weft and weft interlacing.
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