Quartz Fiber Prepreg
High-Purity Quartz Fiber Prepreg for Advanced High-Temperature & RF-Transparent Composites
Quartz Fiber Prepreg is a high-performance composite reinforcement material consisting of ultra-high purity quartz fiber fabric or mat (SiO₂ ≥ 99.9%) pre-impregnated with a controlled amount of high-temperature resin system. It is engineered for precision composite manufacturing where thermal stability, low dielectric constant, and RF transparency are critical.
Quartz fiber prepregs are widely used in aerospace radomes, missile systems, electronics housings, satellite structures, and high-temperature insulation composites due to their exceptional purity, dimensional stability, and electrical performance.
Key Performance Advantages
- Quartz Fiber Purity: ≥99.9% SiO₂
- Excellent RF & Microwave Transparency
- Low Dielectric Constant & Low Dielectric Loss
- High Thermal Stability & Dimensional Accuracy
- Low Thermal Expansion (CTE)
- Excellent Mechanical Strength-to-Weight Ratio
- Non-Conductive & Non-Magnetic
- Non-Asbestos & Halogen-Free
Quartz fiber prepreg delivers consistent fiber wet-out, uniform resin content, and superior laminate quality, ensuring high performance in critical composite structures.
Available Resin Systems
Quartz Fiber Prepreg can be supplied with various resin systems based on application requirements:
- Epoxy Resin – Structural composites, aerospace panels
- Cyanate Ester Resin – RF & microwave applications
- Phenolic Resin – Fire-resistant and low smoke applications
- High-Temperature Specialty Resins – On request
Resin content, tack level, and curing profile can be customized.
Reinforcement Forms Available
- Quartz Fiber Fabric Prepreg (Plain, Twill, Satin Weaves)
- Quartz Fiber Unidirectional Prepreg
- Quartz Fiber Wet Laid Mat Prepreg
- Quartz Fiber Multiaxial Prepreg
Typical Technical Specifications
| Property | Value |
|---|---|
| Product Type | Quartz Fiber Prepreg |
| Reinforcement | Quartz Fiber Fabric / Mat |
| SiO₂ Content | ≥99.9% |
| Resin Systems | Epoxy / Cyanate Ester / Phenolic |
| Resin Content | 30 – 45% (customizable) |
| Areal Weight | 150 – 600 gsm |
| Service Temperature | Depends on resin system |
| Dielectric Constant (Dk) | Very Low |
| Color | Natural White |
Industrial Applications
Aerospace & Defense
- Radomes and RF-transparent structures
- Missile and satellite components
- High-temperature structural panels
RF, Microwave & Electronics
- Antenna covers
- RF enclosures
- EMI-transparent structures
High-Temperature Industrial Composites
- Thermal insulation composite panels
- Fire-resistant structural components
Semiconductor & Precision Equipment
- High-purity composite structures
- Dimensionally stable components
Processing & Handling
- Compatible with autoclave, oven, and press curing
- Controlled storage at low temperatures recommended
- Excellent drape and handling characteristics
- Consistent curing and laminate quality
Standards, Compliance & Quality Assurance
- ASTM D3039 – Tensile Properties of Composites
- ASTM D790 – Flexural Properties
- ASTM D150 – Dielectric Properties
- ISO 9001 – Quality Management System
- RoHS & REACH Compliant
Each batch is supplied with TDS, COA, resin system data, and full traceability documentation.
Why Choose Our Quartz Fiber Prepreg?
- Ultra-high purity ≥99.9% SiO₂ quartz fibers
- Precision-controlled resin content and fiber alignment
- Excellent RF, thermal, and mechanical performance
- Custom prepreg solutions for critical applications
- Trusted global supplier to USA, Europe, Middle East & Asia
FAQs
Its low dielectric constant, RF transparency, and dimensional stability.
Yes, epoxy, cyanate ester, phenolic, and specialty high-temperature resins are available.
Yes, performance depends on the selected resin system.
Yes, it is completely non-asbestos and environmentally safe.