Industry news

What is the relationship between the strength of U-shaped glass and temperature?

2022-08-03 17:49

U-shaped glass, also called channel glass, is a profiled architectural glass. Its U-shaped cross-section gives it greater mechanical strength than ordinary flat glass, along with good light transmission, sound insulation, and thermal insulation. It can reduce the amount of metal framing required and is straightforward to install. Applications include interior and exterior walls, partitions, roofs, and windows. 

Low and high temperatures affect glass strength differently. As temperature rises, defects are generally thought to accumulate more strain energy, increasing the likelihood of cracking. Above 200 ° C, viscous flow in the glass and blunting of microcracks reduce the effects of stress.

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.

We have long focused on the research, development, and manufacture of U-shaped glass, photovoltaic U-shaped glass, fire-resistant and explosion-resistant U-shaped glass, and other photovoltaic glazing products, together with supporting production equipment and manufacturing processes.