The characteristics of high borosilicate glass mainly include the following aspects:
1. High temperature resistance
The strain temperature of high borosilicate glass can reach 520 ℃, the physical strength is high, and the instantaneous temperature difference that can be tolerated can reach up to 150 degrees, while ordinary glass can only withstand 75 degrees. In daily life, we pour boiling water into a glass cup that has just been filled with cold water or ice water, or use a glass cup that has just been scalded with boiling water to receive ice water. Ordinary glass cups will immediately shatter due to temperature stress, but high temperature This does not happen with borosilicate glass.
2. Ultra-low thermal expansion coefficient
The thermal expansion coefficient of borosilicate glass is only about one-third of that of ordinary glass. Because borosilicate glass contains boron, it has a very low thermal expansion coefficient, which is only about one-third of that of ordinary glass, which means The influence caused by the temperature gradient stress will be smaller, so it has stronger fracture resistance. When encountering changes in cold and heat, there is basically no expansion or contraction, and naturally it will not rupture.
3. Chemically stable
High borosilicate glass is chemically stable, and will not release toxic elements after heating, so it will be used in the production of baby bottles, which is environmentally friendly and safe.
The good properties of borosilicate glass make it an important material for the manufacture of high-durability glass instruments such as beakers and test tubes. Of course, its applications are far more than these, other applications such as vacuum tubes, aquarium heaters, flashlight lenses, professional lighters, pipes, glass ball artwork, high-quality beverage glassware, solar thermal vacuum tubes, etc., while , It has also been applied in the aerospace field. For example, the insulating tile of the space shuttle is also coated with high borosilicate glass.
Making glass cups with high borosilicate is a trend in glass cup manufacturing now, but we usually choose glass cups only for appearance and rarely understand the material. After reading this article, you can choose one more glass cup next time. filter criteria.