SilicaPro

Quartz Fiber

Quartz fiber is an inorganic fiber made from high-purity quartz or natural crystal. It maintains some of the characteristics and properties of solid quartz and has some excellent properties of its own. Quartz fiber has unique advantages such as high strength, low dielectric, low dielectric loss, high-temperature resistance, corrosion resistance, small expansion coefficient, and good design performance. It is mainly used in: Missiles, aircraft, satellite radomes; High frequency, low expansion rate circuit board; Electromagnetic window (interference, anti-interference equipment); Aircraft engine environment, thermal protection of rockets and heat insulation of propellers, heat preservation of optical fiber manufacturing, etc.; Automotive glass manufacturing; High-temperature gas filtration; Replace silicate/asbestos fiber; High-temperature gas filtration; and many more.

Material Characteristics of Quartz Fiber

Characteristic	Item	Unit	Value
Physical Properties	Density	g/cm²	2.2
Electrical Properties	Softening Point	°C	1700
	Dielectric Constant (10GHz)		3.74
	Dielectric Loss Factory (10GHz)		0.0002
	Dielectric Strength	V·m^-1	3.7×10⁷
	Resistivity (20°C)	Ω·m	1×10²⁰
	Resistivity (1000°C)	Ω·m	1×10⁸
Thermal Properties	Linear Expansion Coefficient	K^-1	0.55×10^-6
	Specific Heat (20°C)	J·Kg^-1·K^-1	670
	Thermal Conductivity (20°C)	W·m^-1·K^-1	1.4

Quartz Fiber Chopped Strands

Item	Unit	Standard	Test Value
Diameter	um	10.5 ± 1.00	10.7
Length	mm	6 – 30	6.4
Moisture Content	%	—	0.60
Combustible Matter Content	%	1.0 ± 0.5	1.01
SiO2 Content	%	≥ 99.9	99.92

Quartz Fiber Yarn

Name	Filament Diameter (μm)	Lineardensity (TeX)	Twist (T/m)
A Type Quartz Fiber Yarn	6±1	10-400	30-200
B Type Quartz Fiber Yarn	7±1	10-400	30-200
C Type Quartz Fiber Yarn	8±1	30-500	30-160
D Type Quartz Fiber Yarn	10±1.5	50-500	30-160
Chopped Quartz Fiber	6-12	—	—
Quartz Roving	7±1	6-2400	≤10
Quartz Fiber Sewing Thread	7±1	18-300	120-300