Which of the three common glass use effects is your home?

Window glass is an important component of the window system, and the effects of different types of glass are also different, so their lifespan is also completely different, here we will understand how long their respective lifespans are.

01#
Lifespan of tempered glass
Physical tempering is to heat and quench the glass, which changes the structure between the molecules inside the glass. Chemical tempering is the ion exchange of the molecular structure on the surface of the glass at high temperature. Both methods permanently change the microstructure of the glass material. Therefore, unless there is high temperature and strong chemical action, the properties of tempering will not decay or change with time under normal use

Insulating glass is a combination product composed of glass substrate, spacer frame (aluminum strip), desiccant (molecular sieve), sealing material (butyl glue, polysulfide glue or structural glue). In the composition of insulating glass, the glass and aluminum frame are usually very stable, and the life of insulating glass depends on the life of the molecular sieve and sealing material

Due to the change of ambient temperature, the gas in the hollow cavity is always in a state of expansion or compression, so that the insulating glass sealing system is always in a state of stress, and at the same time, ultraviolet rays, water and moisture in the environment will accelerate the aging of the sealing system, resulting in water vapor accelerating into the hollow cavity. When a large amount of water vapor appears in the insulating glass cavity, the insulating glass has failed, and the failure of the insulating glass means that the service life of the insulating glass ends. The key to ensuring that insulating glass does not fail is desiccant and sealing material.

Regarding the life of insulating glass, our country glass enterprises first gave the concept of a 10-year warranty period with reference to American standards; In the national standard GB/T11944-2012 for insulating glass, a reference convention is put forward for the first time, and the concept of "the life expectancy of insulating glass should be greater than 15 years" is proposed.

In fact, the life of insulating glass is closely related to the selection of insulating glass materials and processing technology, and is also affected by many factors such as the layout composition and use environment of insulating glass, which is difficult to quantify simply. For insulating glass that has been installed on the wall, the simpler measurement method is actually to measure the dew point or the air humidity of the spacer

02#
Lifespan of Low-E glass
The lifespan of Low-E glass is mainly determined by the life of the hollow sealing system in which it is located. We know that the main constituent materials of Low-E coatings are metals, alloys, metal oxides, and metal nitrides

Metal nitrides are generally used as protective layers in film structures, and their properties are very stable. Metal oxides and alloy layers generally act as the dielectric layer in the film layer to connect the silver layer and the protective layer, and their properties are also relatively stable. The silver layer in Low-E is relatively active, but its oxidation requires water vapor. Therefore, as long as the insulating glass does not fail, there is basically no need to consider the life of the Low-E film layer alone.

03#
The lifespan of laminated glass
Laminated glass is a composite glass product in which one or more layers of organic polymer interlayer are sandwiched between two pieces of glass, and after process treatment, the glass and interlayer are permanently bonded. Laminated glass will be stuck to the film even if the glass is broken, effectively preventing the occurrence of fragments puncture and penetration falling, and ensuring personal safety.

The service life of laminated glass mainly depends on the material of the middle layer, and the material used in the middle also has different types, such as wet laminated glass, this glass should be away from direct sunlight, if there is direct sunlight, it will accelerate aging, after about two years of use, you will find that there will be signs of yellowing in the middle.

The longer it is used, the more bubbles may appear, or there may be fogging, so under normal circumstances, the service life of this kind of wet laminated glass is about three years.

There is also an EVA laminated glass, which has a longer service life, reaching more than ten years.

PVB or SGP laminated glass can have a relatively useful life of five to seven years. Of course, it will also be affected by other factors, such as the thickness of the laminated glass, including the quality and process of the plate, which also has a greater impact on the service life.