1. Physical characteristics:
Low thermal expansion coefficient: Borosilicate glass has a very low coefficient of thermal expansion (around 3 × 10⁻⁶ K⁻¹ at 20 °C), which means it is much less affected by temperature changes compared to common glasses. This property gives it excellent resistance to thermal shock. It can withstand significant temperature differentials without fracturing, typically able to endure temperature changes of about 165 °C (300 °F).
High melting point: It usually melts at approximately 1,650 °C (3,000 °F; 1,920 K), which is higher than that of ordinary silicate glass.
Good transparency: It is a clear and transparent material, allowing for good visibility through the glass.
2. Chemical properties: Borosilicate glass has excellent chemical stability. It is highly resistant to acids and alkalis, and has good hydrolytic resistance. This makes it suitable for use in various chemical and laboratory environments where it may come into contact with different chemicals.
3. Mechanical properties: It has relatively high hardness and strength, which can effectively prevent scratches on the glass surface. At the same time, it has good impact resistance, making it a safe choice for certain applications where the glass may be subjected to impacts.
4. Applications:
Laboratory equipment: Due to its chemical resistance and thermal stability, it is widely used in the manufacture of laboratory glassware such as reagent bottles, flasks, test tubes, and beakers.
Cookware: Borosilicate glass cookware is popular for its ability to withstand high temperatures and rapid temperature changes without breaking. It is often used for making baking dishes, casserole dishes, and teapots.
Lighting: It is used in various lighting applications, including light bulbs and lamps, especially in high-temperature or high-performance lighting systems.
Optics: It is used in the production of optical components such as lenses, prisms, and optical fibers due to its good optical properties and low fluorescence.
Electronics: In the electronics industry, it is used for the production of substrates, insulators, and other components that require high temperature resistance and electrical insulation.
https://www.vattiglass.com/product/industry-special-glass.htmlThere are many trade names for borosilicate glass, such as Pyrex, Duran, and Schott, which are well-known in the market. Overall, borosilicate glass is a highly valuable material with unique properties that make it suitable for a wide range of applications in different fields.