The effect of low temperature and high temperature on the strength of glass is different. It is generally believed that with the increase of temperature, more strain energy will accumulate at the gap and the probability of fracture will increase. When the temperature is higher than 200 ℃, due to the increase of viscous flow of glass, the cracks of microcracks are passivated, and the stress is relieved, so the glass strength is increased. Glass has a wide range of service temperature, and the mechanism of the influence of temperature on glass strength has not yet been explored. According to the test in the range of zero (- 273 ℃) to 500 ℃, the low point of strength is about 200 ℃.
Here we also talk about the thermal stability of glass, that is, the very large temperature difference that the glass can withstand without damage, that is, the temperature difference that the glass can withstand rapid cooling and heating. The smaller the significant expansion coefficient is, the better the thermal stability is. The Δ t of U-shaped glass is about 110 ℃. In other words, when the glass is heated to 350 ℃, it will break if it drops to 240 ℃ instantaneously. Glass ceramics have high thermal stability because of its high coefficient of expansion. It is not easy to damage the glass surface when it is hot, but it is easy to damage the glass surface when it is cold. The thermal stability of glass is also related to glass composition, product thickness and whether it has been quenched.
The U-shaped glass produced by Zhejiang Xiangjie Lvjian Technology Co., Ltd. has good environmental protection and energy saving performance, and meets the strict standards, providing safer and more energy-saving products for the owners and projects. Xiangjie U-shaped glass has the characteristics of good daylighting, heat insulation, sound insulation, high mechanical strength, anti-aging and light resistance. Its shape is banner type, with the style of straight, elegant and smooth lines of the times, unique decorative effect and convenient installation. Welcome the new and old customers to consult and purchase!