Borosilicate glass (specially hard material borosilicate glass) has a linear expansion coefficient of (3.3±0.1)×10-6/K-1. It is also called “3.3 borosilicate glass, 95 borosilicate glass”. It is a special high-temperature glass with low expansion coefficient, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability. Because of its excellent performance, it is widely used in chemical engineering, lighting facilities, medical technology, Environmental engineering, precision instruments, household appliances and other fields. The unique physical and chemical properties are favored by the general public, especially in the field of lighting engineering is more widely used, and has been widely popularized in China.
product features
The borosilicate glass has stable high temperature resistance, can work in a high temperature environment of 450 ℃ for a long time, and the instant temperature resistance is up to 650 ℃. After semi-tempered treatment, it can significantly improve the thermal shock resistance of the glass, improve the mechanical strength and thermal expansion of the glass The coefficient is low, only 3.25x10-6K-1, and the transparency is high. Good water resistance, alkali resistance, acid resistance, high strength, high hardness, and super anti-explosion ability.
Scope of application
The expansion coefficient of high borosilicate glass is generally speaking that the glass is taken out of the freezer and immediately filled with the hot water glass that has just opened. It will not break from minus 20 degrees to 130 degrees. It is no problem. The glass products of the layer can be directly entered into the microwave oven. I have personally tried it and can be placed on an open fire for 20 minutes. There is no problem. The main purpose of high borosilicate is to make glass products, microwave oven supplies, solar tubes, chemical reactors, chemical reaction vessels, etc. The safest drinking water supplies.
Borosilicate glass itself has good corrosion resistance. The glass products used in general chemical laboratories are borosilicate glass. However, if you are often exposed to corrosive substances, it is not recommended to use tempered glass, because tempered glass has a certain self-detonation rate, which is also defective. If it bursts, it will cause corrosive substances to splash, which is not safe. Of course, the above is only an assumption, and whether it can be used depends on the specific situation.