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Borosilicate Glass is a high-performance glass known for its exceptional resistance to thermal shock and chemical corrosion. It is composed primarily of silica (SiO₂) and boron trioxide (B₂O₃), which gives it a low coefficient of thermal expansion, allowing it to withstand rapid temperature changes without cracking or breaking. The glass is transparent, with high optical clarity, and can be produced in various thicknesses, from thin laboratory slides to thick industrial panels.
Manufactured through a fusion or float process, Borosilicate Glass undergoes rigorous annealing to ensure structural integrity. It has a melting point of around 820°C, making it suitable for applications involving high temperatures. The glass is also highly resistant to most acids, alkalis, and organic solvents, making it a preferred choice in chemical and pharmaceutical industries.
Thermal Shock Resistance: Borosilicate Glass can withstand temperature differences of up to 300°C without breaking, making it ideal for use in ovens, microwave appliances, and laboratory equipment exposed to sudden temperature changes.
Chemical Durability: Its low reactivity to chemicals makes it suitable for storing and handling aggressive substances, including strong acids and bases. This property is crucial in laboratory and pharmaceutical settings where contamination must be avoided.
High Clarity and Purity: The glass has excellent optical properties, providing clear visibility even in thick sections. It is free from impurities that could affect its performance, making it suitable for applications requiring precision, such as optical lenses or scientific instruments.
Fire Resistance: Borosilicate Glass has a high 软化点 (softening point), meaning it retains its structural integrity at high temperatures, making it useful in fire-rated applications and as a protective barrier in industrial environments.
Laboratory Equipment: Used for test tubes, beakers, flasks, and petri dishes, where resistance to thermal shock and chemical corrosion is essential for safe and accurate experiments.
Kitchenware: Popular for oven-safe dishes, glass cookware, and drinkware, allowing users to transfer hot dishes directly from the oven to the table without cracking.
Industrial Applications: Employed in heat exchangers, chemical reactors, and pipelines handling corrosive materials, ensuring long-lasting performance in harsh environments.
Optics and Electronics: Used in optical fibers, camera lenses, and LED components, leveraging its high clarity and thermal stability for precise manufacturing.
Q: Is Borosilicate Glass safe for food use?
A: Yes, it is non-toxic and does not leach chemicals into food or beverages, making it a safe choice for kitchenware and food storage containers.
Q: Can Borosilicate Glass be cut or shaped after manufacturing?
A: Yes, it can be cut, drilled, and polished using specialized tools, though the process requires expertise due to its hardness and thermal properties.
Q: How does Borosilicate Glass compare to regular soda-lime glass?
A: Borosilicate Glass has a much lower thermal expansion coefficient (3.3 x 10⁻⁶/K vs. 9 x 10⁻⁶/K for soda-lime glass), making it far more resistant to thermal shock. It also has better chemical resistance but is slightly more expensive due to its specialized composition.
Q: Can Borosilicate Glass be used in outdoor applications exposed to sunlight?
A: Yes, it is UV-resistant and does not yellow or degrade when exposed to sunlight, making it suitable for outdoor optical devices or solar panel components.
