U-shaped glass, also known as trough-shaped glass, is a new kind of building profiled glass. Because the section is U-shaped, compared with ordinary plate glass, it has higher mechanical strength, better light transmission, sound insulation, heat insulation, can save a lot of metal materials, as well as the advantages of simple construction, etc. , it is suitable for building interior and exterior walls, partition walls, roofing and windows, etc. 

The effect of low temperature and high temperature on the strength of glass is different. It is generally believed that as the temperature increases, the defects will accumulate more strain energy and the probability of cracking will be increased. When the temperature is higher than 200 ° C, the effect of stress is mitigated by the addition of viscous flow of glass and the passivation of micro-cracks.

This makes the glass stronger. The application temperature of glass has a wide range, and the mechanism of the effect of temperature on glass strength is not clear. Based on measurements from zero (-273 ° C) to 500 ° C, the lower strength point is around 200 ° C.

Here also talk about the thermal stability of glass, that is, glass adhere to do not damage can withstand a very large temperature difference, that is, the temperature difference between glass resistance to rapid cooling and rapid heating. The smaller the apparent expansion coefficient is, the better the thermal stability is. The ΔT of the U-shaped glass is about 110 ° C. in other words, when the glass is heated to 350 ° C, it will break if it drops to 240 ° C instantaneously.

Glass-ceramics because of high coefficient of expansion, thermal stability is also high. Usually, when the heat, the glass surface pressure is not simple damage, when cold, the glass surface tension simple damage. The thermal stability of glass is also related to glass composition, product thickness, whether or not quenching.

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