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High-Quality Weighting Glass Beads from China Suppliers - Reliable Factory Supply for Various Applications
| Chemical Component | Typical Content | Description |
|---|---|---|
| SiO2 / Silicon Dioxide | 70% - 73% | Main glass network component |
| Na2O / Sodium Oxide | 12% - 15% | Helps glass melting and processing |
| CaO / Calcium Oxide | 7% - 10% | Improves glass stability |
| MgO / Magnesium Oxide | 2% - 4% | Improves durability |
| Al2O3 / Aluminum Oxide | 0.5% - 2.0% | Improves chemical resistance |
| K2O / Potassium Oxide | 0.5% - 1.5% | Minor alkali component |
| Fe2O3 / Iron Oxide | ≤ 0.5% | Controlled impurity |
Frequently Asked Questions
What type of glass does this chemical composition represent?
This profile represents typical soda-lime silica glass, the most widely manufactured type of glass used extensively for flat architectural windows, automotive glass, and everyday glass containers.
Why is Silicon Dioxide (SiO2) the main component?
Silicon Dioxide (SiO2) functions as the primary network former. It provides the essential amorphous structural framework that delivers mechanical strength, hardness, and transparency.
What is the function of Sodium Oxide (Na2O) in glass production?
Sodium Oxide acts as a fluxing agent. It significantly lowers the melting point of silica from over 1,700°C to manageable working temperatures, making the manufacturing and shaping process energy-efficient.
Why must Iron Oxide (Fe2O3) be kept below 0.5%?
Iron Oxide is a natural impurity that imparts a greenish or brownish tint to the glass. Controlling it below 0.5% ensures maximum light transmission and high visual clarity.
How do Calcium Oxide (CaO) and Magnesium Oxide (MgO) stabilize glass?
While sodium lowers the melting point, it makes pure sodium silicate water-soluble. Adding Calcium Oxide (CaO) and Magnesium Oxide (MgO) restores chemical insolubility, enhances weather resistance, and improves overall structural stability.
What role does Aluminum Oxide (Al2O3) play in durability?
Aluminum Oxide enhances chemical durability, increases viscosity during forming, and significantly improves scratch resistance and resistance against thermal shock.
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