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Cenospheres for FRP Composites

Cenospheres for polyester resin and FRP composites are lightweight hollow aluminosilicate microspheres with 100 Mesh through particle size and approx. 0.80-0.85 g/cm³ true density. They are used in polyester resin systems, FRP composites, artificial stone and other weight-reduction applications.
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  • 100 Mesh

  • CENOLITE

  • 2621900090

Cenospheres for FRP Composites

SEPPE cenospheres for FRP composites are lightweight hollow aluminosilicate microspheres with 100 Mesh Through particle size and approx. 0.80-0.85 g/cm³ true density. This grade is designed for fiberglass composites, FRP panels, molded composite parts, and weight-reduction applications requiring stable lightweight mineral fillers.

★ 100 Mesh Through
◆ True Density 0.80-0.85 g/cm³
★ FRP Composite Filler
◆ Fiberglass Composite Filler
★ Lightweight Composite Filler
◆ Dimensional Stability Support
ISO 9001:2015 Certified · Batch QC · TDS Available · Custom Packaging

What Are Cenospheres for FRP Composites?

▸ Cenospheres for FRP composites are hollow ceramic microspheres used as lightweight composite fillers in fiberglass-reinforced plastic systems.

▸ The 100 Mesh Through grade supports dispersion in resin-fiberglass systems and helps reduce finished part weight in FRP panels and molded components.

▸ The approx. 0.80-0.85 g/cm³ true density range provides effective weight reduction while maintaining inorganic stability in composite formulations.

Key Performance Characteristics

▸ FRP Composite Filler: Suitable for fiberglass composite filler applications, FRP panels, molded parts, and lightweight structures.

▸ Composite Weight Reduction: Hollow microspheres lower density in composite materials while maintaining filled volume.

▸ 100 Mesh Through: Fine screened particle size supports more uniform distribution in resin and fiberglass systems.

▸ Dimensional Stability Support: Inorganic aluminosilicate particles can help improve dimensional consistency in suitable composite formulas.

▸ Low Density Composite Filler: Approx. 0.80-0.85 g/cm³ true density is suitable for composite weight-saving projects.

Hollow Microsphere Structure   Cenosphere SEM Structure

Typical Applications

▸ FRP composite panels and molded components

▸ Fiberglass-reinforced plastic parts

▸ Lightweight composite filler systems

▸ Marine, transportation, and construction composite materials

▸ Weight reduction filler for composite formulations

Chemical Composition & Physical Properties

Chemical Analysis (Typical)
SiO₂ 50-60%
Al₂O₃ 25-40%
Fe₂O₃ 1-6% / low iron grade available
CaO 1-1.5%
Physical Properties
Shape Hollow spherical powder
Color Light grey to white
Particle Size 100 Mesh Through
True Density Approx. 0.80-0.85 g/cm³
Recommended Use FRP composites, fiberglass composite filler, panels, molded parts, and weight reduction
Bulk Density Grade dependent
Customization Surface treatment and particle size selection available on request

Technical Documents

▸ CENOSPHERE TDS — general technical data for FRP composite filler evaluation and customer documentation.

▸ Coating Grade Specification Sheet — particle size distribution, pH, iron content, and coating-grade controls.

Packaging & Delivery

▸ 600 kg jumbo bags — approximately 20 bags per 40' High Cube FCL, depending on grade and loading plan.

▸ Custom packaging, palletizing, and private labeling are available upon request.

▸ Store sealed in dry conditions. Reliable container shipment is available to major ports worldwide.

FAQ

❓ Why use cenospheres in FRP composites?

▸ Cenospheres reduce composite weight while adding stable hollow mineral filling to resin-fiberglass systems.

❓ Is 100 Mesh Through suitable for fiberglass composites?

▸ Yes. The fine screened grade supports distribution in resin and helps reduce coarse particle defects in composite parts.

❓ Can it improve dimensional stability?

▸ It can support dimensional consistency in suitable formulations, but final performance should be confirmed by composite testing.

❓ Can it be used in composite panels?

▸ Yes. It can be evaluated in FRP panels, molded products, lightweight structures, and fiberglass composite materials.

❓ Can SEPPE recommend loading levels?

▸ SEPPE can provide samples and basic grade selection guidance, while final loading should be confirmed by your resin and composite process tests.

Need Samples or Custom Specifications?

Contact SEPPE for product specifications, samples, formulation trials, OEM packaging, and bulk pricing.

Request a Quote

Coating Grade Cenosphere Quality Control System

SEPPE operates a fully integrated ISO 9001:2015 certified quality management system for coating grade cenospheres. Every batch undergoes rigorous testing to ensure particle size consistency, low iron content, excellent dispersion, and compliance with coating performance requirements.

★ ISO 9001:2015 Certified
◆ Particle Size Verification
★ Low Iron Content Control
◆ Coating Performance Test
★ Full Batch Traceability
◆ Digital COA Available
▸Independent Laboratory Verification · On-Site Quality Audits · 24/7 Technical Support

End-to-End Quality Control Process

▸Our quality control system ensures every batch meets exact coating application requirements, from raw material verification to final shipment.

01
Raw Material Inspection
Verify fly ash source
Chemical composition test
Physical property screening
02
Separation & Purification
Floatation separation
Magnetic iron removal
Precision size classification
03
In-Process Testing
Real-time density monitoring
Particle size analysis
Iron content check

04

Final Batch Inspection
Particle size verification
Iron content verification
Coating performance test
05
Packaging & Shipment
Package integrity check
Batch labeling verification
Container loading supervision

Coating Grade (CENOLITE 910) Testing Standards

Test Parameter Test Method Specification Frequency
Particle Size Distribution ISO 13320:2009 (Laser Diffraction) D50=45-60μm, D98=105-140μm Every Batch
pH Value ISO 787-9 (10% Aqueous Suspension) 7.0 ± 1.0 Every Batch
Iron Content (Fe₂O₃) X-Ray Fluorescence (XRF) < 6% Every Batch
True Density ISO 787-10 (Pycnometer) 0.70-0.90 g/cm³ Every Batch
Moisture Content ISO 787-2 (105°C, 2h) ≤ 0.3% Every Batch
Chemical Composition X-Ray Fluorescence (XRF) SiO₂ 55-65%, Al₂O₃ 27-33% Every 3 Batches
Dispersion Test High-Speed Mixing + Hegman Gauge No agglomeration, uniform dispersion Monthly

Core Testing Equipment

▸Our lab is equipped with state-of-the-art instruments for coating-grade cenospheres:

• Laser Particle Size Analyzer – ensures narrow PSD for smooth coatings

• XRF Spectrometer – controls iron content and chemical consistency

• Hegman Gauge – evaluates pigment and filler dispersion quality

• High-Speed Disperser – simulates paint production conditions

• Moisture Analyzer – accurate moisture content determination

 Hydraulic Pressure Tester    Digital Density Analyzer   Hydraulic Pressure Tester

Quality Assurance & Traceability

▸Every batch of CENOLITE 910 is verified for the following critical parameters:

• Particle size distribution – laser diffraction per ISO 13320 ensures D50=45-60μm, D98=105-140μm for optimal film smoothness and packing.

• Iron content (Fe₂O₃) – controlled below 6% via XRF to maintain low color interference and high brightness in light-toned paints.

• pH stability – 10% aqueous suspension tested per ISO 787-9, maintained at 7.0 ± 1.0 to ensure resin and additive compatibility.

• Density consistency – true density checked per ISO 787-10 (0.70-0.90 g/cm³) to guarantee predictable loading and lightweight performance.

• Dispersion performance – high-speed mixing and Hegman gauge test confirm no agglomeration, ensuring uniform incorporation in paint systems.

Download Technical Documents

• For initial introduction and bidding documents
• Detailed particle size distribution, pH, and iron content

FAQ – Coating Grade Cenospheres

❓ What is the typical particle size range for CENOLITE 910?

▸ D50 = 45-60 μm, D98 = 105-140 μm, optimized for thin-film and industrial coatings.

❓ Why is iron content important for coating applications?

▸ Low iron (≤6%) ensures lighter color and better opacity, especially for white or light-colored paints and primers.

❓ Do you test dispersion performance?

▸ Yes, every batch is tested with high-speed mixing and Hegman gauge to ensure no agglomeration and uniform dispersion in paint systems.

❓ Can you provide a COA with every shipment?

▸ Yes, each shipment includes a digital Certificate of Analysis with batch-specific test results.

❓ Can you customize particle size for a specific coating resin?

▸ Yes, we offer custom cuts (e.g., D50=30-40μm for high-gloss finishes) upon request.

Need Custom Coating Grade Specifications?

Contact our coating specialists to discuss custom PSD, iron content targets, or to request batch samples for your formulation.

Contact Coating Team
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