Greenhouse Building Materials Tempered Glass

In the preparation process, ordinary annealed glass is first cut to the required size, then heated to about 700 degrees close to the softening point, and then quickly and uniformly cooled.

When the toughened glass is damaged by external impact, under the action of internal energy, the glass is torn into small pieces with obtuse angles. Compared with ordinary glass when it breaks, the large pieces are in the shape of long blades and sharp corners. The small pieces of toughened glass that breaks are very harmless to the human body.

Properties of tempered glass

Tempered glass is actually a kind of prestressed glass. In order to improve the strength of the glass, chemical or physical methods are usually used to form the corresponding compressive stress on the surface of the glass. When the glass is subjected to external forces, it will first offset the surface stress, thereby further Increased carrying capacity and improved glass tensile strength.

There are two main advantages of tempered glass. The first is that the strength is several times higher than ordinary glass, and the bending strength is about 3 to 5 times that of ordinary glass. The impact strength is about 5 to 10 times that of ordinary glass, which improves the strength and also improves the safety; the use of safety is the second major advantage of physical tempered glass, and its increased bearing capacity greatly improves the glass Fragile nature, even if the tempered glass is destroyed, it will show small fragments without sharp angles, which greatly reduces the degree of damage to the human body. The tempering glass’s resistance to rapid cooling and heat is also 2 to 3 times higher than that of ordinary glass, generally, It can withstand a temperature difference of more than 150 degrees and has a relatively obvious effect on preventing thermal bursting.