Quartz fiber yarn, as a high-performance specialty fiber, has become a key material in fields such as electronic communications and new energy due to its excellent high-temperature resistance, insulation, and corrosion resistance.
1. Basic characteristics of quartz fiber yarn
Quartz fiber yarn is a continuous fiber made by melting and drawing high-purity silica. Its main characteristics include:
(1) Extremely High Temperature Resistance
Softening point up to 1700℃, long-term operating temperature up to 1050℃.
Extremely low coefficient of thermal expansion (0.54×10⁻⁶/℃), excellent thermal shock resistance, suitable for extreme temperature environments.
(2) Excellent Electrical Insulation Performance
Low dielectric constant (3.74), extremely low dielectric loss (0.0002), suitable for high-frequency electronic equipment.
(3) Excellent Chemical Stability
Resistant to strong acids (except hydrofluoric acid), alkalis (not resistant to strong alkalis), and oxidation, suitable for corrosive environments.
(4) High Strength and Low Density
Tensile strength 3600 MPa, tensile modulus up to 78 GPa, higher than ordinary glass fiber, while density only 2.2 g/cm³, offering significant lightweight advantages.
(5) Excellent Wave Transmission Performance
Almost no attenuation of electromagnetic waves, making it an ideal material for wireless communication.
Quartz yarn
2. Manufacturing Process of Quartz Fiber Yarn
(1) Raw Material Purification
Ultra-high purity SiO₂ (purity ≥ 99.95%) is prepared using high-purity quartz sand.
(2) Melting and Drawing
Quartz is melted in a high-temperature electric furnace and drawn into continuous fibers through a stencil.
(3) Surface Treatment
A high-temperature resistant wetting agent (such as a silane coupling agent) is applied to improve the bonding force between the fiber and the resin matrix.
(4) Yarn Forming
Yarn of different specifications is produced through twisting, plying, and other processes, suitable for weaving, braiding, or winding.
3. Application Areas of Quartz Fiber Yarn
(1) Electronic Information: 5G Communication and Semiconductor Manufacturing
High-Frequency Circuit Boards: Used in 5G base stations and communication equipment to reduce signal loss.
Semiconductor Equipment: Used to manufacture corrosion-resistant parts for plasma etching machines, reducing metal contamination.
(2) New Energy: Batteries and Hydrogen Energy Storage and Transportation
Lithium-ion Battery Separator Reinforcement: Improves battery safety and prevents thermal runaway.
Quartz fiber yarn, as a key strategic material of the 21st century, is driving innovation in industries such as new energy and electronic information.
Its unique combination of properties gives it irreplaceable advantages in extreme environments and high-end applications.
In the future, with advancements in manufacturing technology and the expansion of application scenarios, quartz fiber yarn will undoubtedly shine in more fields, becoming a “rising star” in the field of high-performance materials.