1. Product Features

Glass fiber is an inorganic, non-metallic fiber made primarily from minerals such as silica sand, limestone, and clay, melted at high temperatures and then drawn. Its fiber diameter typically ranges from a few to over ten microns, with a smooth surface and high strength. Due to its unique chemical composition and physical structure, glass fiber exhibits the following properties:

Non-flammability: Glass fiber does not burn at high temperatures, with a melting point exceeding 1000°C.

Low thermal conductivity: The fiber's interior is characterized by numerous air pores, resulting in low thermal conductivity and excellent thermal insulation.

Corrosion resistance: Excellent resistance to acids, alkalis, and most chemicals.

Lightweight and high-strength: High strength and low density, it can replace some metal and asbestos materials.

Environmentally friendly and safe: It contains no asbestos, is non-toxic, and does not release harmful gases when burned.

2. Product Advantages

The advantages of fiberglass in insulation and fire protection are primarily reflected in the following:

Excellent fire resistance: Non-combustible, effectively preventing the spread of flames;

Significant thermal insulation: Low thermal conductivity reduces heat loss and improves energy efficiency;

Lightweight and easy to process: Can be made into various forms, such as cloth, felt, board, and cotton, to suit different construction needs;

High durability: Resists long-term degradation and offers stable fireproof and thermal insulation performance;

Eco-friendly alternative: An ideal alternative to asbestos.

3. Applications

Fiberglass is widely used in insulation and fire protection, including:

Building insulation: Wall insulation, roof insulation, and fireproof walls;

Fireproof materials: Fireproof cloth, fireproof blankets, high-temperature gloves, and welding protective products;

Industrial insulation: Furnace insulation, pipe insulation, and thermal insulation gaskets;

Transportation: Automotive exhaust system insulation, ship fireproof partitions, and aerospace thermal protection materials;

Household appliances: Insulation for electric ovens, microwave ovens, and water heaters.

4. Selection Guide

When choosing fiberglass insulation/fireproofing materials, consider the following factors:

Ambient Operating Temperature: Ordinary alkali-free glass is suitable for temperatures ≤550°C, while high-silica fiberglass can withstand temperatures exceeding 1000°C.

Product Form: Insulation wool is suitable for large-area insulation, fireproof cloth is suitable for protective coverings, and felt/board is suitable for building components.

Coating: Silicone coating (high-temperature resistance and waterproofing), graphite coating (enhanced wear resistance), PTFE coating (corrosion resistance).

5. FAQ

Does fiberglass thermal insulation material burn?

No. Fiberglass is a Class A non-combustible material and will not produce flames or release toxic gases when exposed to fire.

What is the difference between fiberglass insulation and rock wool?

Both offer fireproof and heat-insulating properties. Fiberglass is lighter, more environmentally friendly, and easier to install. Rock wool has slightly higher temperature resistance, but is heavier and more hygroscopic.

What is the temperature range for fiberglass fireproofing cloth?

Ordinary fiberglass cloth can withstand temperatures around 550°C, while high-silica fiberglass cloth can withstand temperatures exceeding 1000°C.

Is fiberglass harmful to the human body?

No. Modern fiberglass products are asbestos-free, pose no risk of cancer, and have passed international environmental certifications. Wearing a protective mask during construction is recommended to prevent inhalation of fine dust.

6. Summary

Due to its non-flammability, low thermal conductivity, lightweight, high strength, and environmental safety, fiberglass has become an irreplaceable insulation and fireproofing material in construction, transportation, industry, and other fields. With global energy conservation and rising safety awareness, the application of fiberglass in thermal insulation and fire protection will continue to grow, and the market prospects are broad. We are a Chinese fiberglass manufacturer. If you are looking for high-quality fiberglass, our products are an excellent choice. For more information, please contact us by email at annayu@169chem.net or WhatsApp: +86 18909016373.