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| Chemical Component | Typical Content | Description |
|---|---|---|
| SiO₂ | 70% – 73% | Main glass network component |
| Na₂O | 12% – 15% | Helps reduce melting temperature |
| CaO | 7% – 10% | Improves glass stability |
| MgO | 2% – 4% | Improves durability |
| Al₂O₃ | 0.5% – 2.0% | Improves chemical resistance |
| K₂O | 0.5% – 1.5% | Minor alkali component |
| Fe₂O₃ | ≤0.5% | Controlled impurity |
Frequently Asked Questions
What is the primary chemical component of this glass?
Silicon Dioxide (SiO₂) is the primary network-forming component of this glass, typically accounting for 70% to 73% of its total chemical composition.
Why is Sodium Oxide (Na₂O) added to the glass composition?
Sodium Oxide (Na₂O) is added in typical concentrations of 12% to 15% to act as a flux, which significantly lowers the melting temperature during the manufacturing process.
How does Calcium Oxide (CaO) benefit the glass properties?
Calcium Oxide (CaO), representing 7% to 10% of the mixture, plays a crucial role in improving the chemical stability and physical durability of the glass.
What role does Aluminum Oxide (Al₂O₃) play in this formulation?
Even in small amounts (0.5% to 2.0%), Aluminum Oxide (Al₂O₃) significantly enhances the glass's chemical resistance and prevents degradation over time.
Why is Iron Oxide (Fe₂O₃) content kept so low?
Iron Oxide (Fe₂O₃) is a controlled impurity. Keeping its concentration at or below 0.5% is essential to maintain high optical clarity and prevent unwanted green tinting in the finished glass product.
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