High purity (≥98.5–99.5%): Extremely low impurity content, especially with strict control over Fe, Ca, and Si ions to avoid affecting the electrical and optical properties of the glass.

High reactivity and easy melting: Exhibits high reactivity during glass melting, rapidly fusing with silicate systems to improve melting efficiency.

Controllable particle size and good dispersibility: Fine particles (D50 typically 1–8 µm) facilitate uniform mixing and stabilize the glass composition.

High whiteness and colorless transparent phase: Has no adverse effects on the transparency and appearance of the glass.

II. Key Roles of MgO in Electronic Glass

1. Lowering Glass Melting Point and Improving Melting Efficiency

MgO is a network modifier that effectively lowers the glass melting temperature:

✔ Shortens melting time

✔ Reduces energy consumption

✔ Increases the capacity and efficiency of glass furnaces

2. Improving the Mechanical Strength and Toughness of Glass

MgO participates in the formation of the magnesium silicate structure, improving the glass's:

✔ Bending strength

✔ Impact resistance

✔ Thermal stability and thermal shock resistance

Especially suitable for electronic-grade and panel-grade glass applications requiring higher strength.

3. Improving the Chemical Stability of Glass

Adding MgO enhances the glass's:

✔ Acid and alkali resistance

✔ Hydrolysis resistance

✔ Long-term environmental durability

Particularly important for display panel glass used for long-term applications.

4. Improved Optical and Electrical Properties

MgO has low impurities and low light absorption, which helps improve:

✔ Light transmittance

✔ Refractive index stability

✔ Electrical insulation properties

Suitable for high-performance materials such as liquid crystal display glass and optical glass.

5. Control of Coefficient of Thermal Expansion (CTE)

MgO plays an important role in regulating the coefficient of thermal expansion of glass systems, making products more suitable for:

✔ TFT-LCD

✔ Cover glass

✔ Electronic component packaging glass