What are the main features of tempered glass?
time：2017-08-11 16:49:12
1) the mechanical strength is large: when the toughened glass is subjected to the external force such as the load, the bending or the impact, the surface of the toughened glass is subjected to compressive stress, and the other surface is subjected to Zhang Yingli. As the load increases, this tensile stress is gradually reduced by the compressive stress on the surface of the tempered glass until it is completely offset to Zhang Yingli. As the compressive strength of the glass is almost 10 times greater than the tensile strength, the result is that the toughened glass not only increases the surface but also causes the weak part of the glass to be transferred. Therefore, the compressive strength and flexural strength of tempered glass generally increase by 4~5 times, while the impact strength can be increased by 5~8 times.
2) good thermal stability: the improvement of thermal stability of tempered glass is similar to the increase of mechanical strength. It is also related to the size and distribution of internal stress. When the surface of the glass is heated rapidly, the inner layer is still in a cool state, so that the heating surface is in compressive stress, and the inner layer is subjected to Zhang Yingli. The glass burst that is caused by the tensile strength when the temperature difference is too large, Zhang Yingli more than the glass at. And the original compressive stress on the surface of the toughened glass can offset part of thermal expansion and relieve the inner layer of Zhang Yingli, so the thermal stability of tempered glass can be increased by 1.5~2 times.
3) strong safety: glass crack is caused by crack defects as a starting point, which results in more than tensile strength. Although the weak point of toughened glass (Zhang Yingli District) is in the center, usually there is no micro cracks, but in the high-speed impact, internal stones and other conditions, will form a starting point in the rupture tensile stress layer, rapid expansion, to crack around Zhang Yingli under the action of communication, formed with many cracks, different size groups set. Because the toughened glass suddenly breaks up under the closed condition of the compressive stress, the fragments of the toughened glass are honeycombed small particles and become even
The netted particles without sharp corners are not easy to hurt, and therefore have better safety performance, and belong to a kind of safety glass.
