What is mica?

Published time:

2025-07-24 09:45

Source:

🪨 Main Types of Mica

🌿 Natural Mica

Types include:

Muscovite – Transparent, great insulation, withstands up to 550℃.

Phlogopite – Brown, high heat resistance (up to 850℃).

Biotite – Iron-rich, chemically unstable, used in insulation fillers.

Lepidolite – Purple, important source of lithium.

Main producers: China, India, Russia, Brazil.

🧪 Synthetic Mica

Produced through a high-temperature melting process, synthetic mica is purer, whiter, and offers better heat and chemical resistance. It is widely used in:

Lithium battery coating materials

High-end cosmetics (e.g. Dior, Lancôme)

Aerospace materials

Special ceramic chip carriers

⚙️ The Role of Mica in Microwave Ovens

You may have noticed a paper-like piece inside your microwave — that’s a mica sheet. Its functions include:

✅ Blocking grease and moisture from reaching the magnetron ✅ Preventing sparks and electric arcs ✅ Withstanding high temperatures while providing insulation

⚠️ Do not replace it with paper or DIY materials — this can lead to fire hazards.

📈 Market Trends

By 2030, the global mica market is projected to grow to $12.5 billion, with synthetic mica making up over 40%, becoming a key material in green energy and high-tech industries.