Life and attention of aluminum alloy door and window glass
- 03:00-03:00 editor
- Generally, there are only two conditions that affect the glass life: humid air and high temperature. Continuous moist air can make glass moldy, but under normal temperature, the rate of glass mildew is very slow, which generally takes several months. Under normal use environment, there is seldom moist air lasting for several months, so the glass exposed in the air will not mildew.
There is no aging problem of ordinary glass in natural environment
The chemical composition of glass is very stable. In the natural state, the glass will not be affected by sunlight, rain and fog, and its performance will not be degraded. Ordinary acid and alkali will not harm glass. We will know this by thinking about the chemical experiment vessels when reading.
Generally, the mildew of glass occurs in the process of overlapping storage of glass. It is easy to mildew when glass is stacked in the wet warehouse or exposed to rain. Generally speaking, glass without tempering is more likely to mould than tempered glass.
The temperature below 300 ℃ does not affect the thermal stability of the glass. However, the physical and chemical properties of glass change with the increase of temperature above 300 ℃. In terms of physical properties, general glass begins to soften at about 600 degrees. From the chemical properties, the increase of temperature will make the glass internal crystallization phenomenon, so that the glass gradually from transparent to fuzzy transition. It takes several days for glass to lose its transparency at 700 ℃, and months or even years at 300 ℃. However, at room temperature, it may take tens of thousands of years for glass to become fuzzy, so it can be ignored.
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