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Cenospheres For Fillers And Coatings

Cenospheres for fillers and coatings are lightweight hollow aluminosilicate microspheres with 90 Mesh through particle size and approx. 0.90-0.95 g/cm³ true density. They are suitable for lightweight fillers, coatings, putties and general industrial formulation applications.
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Quantity:
  • 90Mesh

  • CENOLITE

  • 2621900090

Cenospheres for Fillers & Coatings

Cenospheres for Fillers & Coatings are lightweight hollow aluminosilicate microspheres with 90 Mesh Through particle size and true density around 0.90-0.95 g/cm³. This grade is designed for lightweight fillers, coatings, putties, and general direct sales applications where stable mineral filling and weight reduction are required.


★ 90 Mesh Through
◆ True Density 0.90-0.95 g/cm³
★ Fillers & Coatings Grade
◆ Lightweight Mineral Filler
★ Putties & Surface Systems
◆ General Direct Sales
ISO 9001:2015 Certified · Batch QC · TDS Available · Custom Packaging

What Are Cenospheres for Fillers & Coatings?

▸ This grade is selected for customers who need a practical lightweight mineral filler for coatings, putties, fillers, and general industrial formulations.

▸ 90 Mesh Through particle size provides a balanced distribution for easy blending, volume filling, and surface material applications.

▸ The relatively higher true density range of approx. 0.90-0.95 g/cm³ provides stable filling performance while still reducing weight compared with dense mineral fillers.

Key Performance Characteristics

▸ Balanced Filler Grade: Suitable for general filler use where cost, density, and processing stability must be balanced.

▸ 90 Mesh Through Particle Size: Practical for coatings, putties, fillers, and direct sales applications requiring stable handling.

▸ Lightweight Volume Filling: Hollow spherical structure helps reduce formula weight and improve volume efficiency.

▸ Good Blending Behavior: Spherical particles support dispersion and mixing in dry and wet systems.

▸ Multi-Use Application: Suitable for coating fillers, putty systems, lightweight compounds, and general mineral filler markets.

Hollow Microsphere Structure   Cenosphere SEM Structure

Typical Applications

▸ Lightweight fillers for coatings and putties

▸ Wall putty, repair compounds, and surface finishing materials

▸ General industrial filler and volume extender applications

▸ Lightweight coating and texture systems

▸ Direct sales grade for distributors and formulation trials

coating filler application   surface coating application

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 90 Mesh Through
True Density Approx. 0.90-0.95 g/cm³
Recommended Use Lightweight fillers, coatings, putties, and general applications
Bulk Density Grade dependent
Customization Particle size and density available on request

Technical Documents

▸ CENOSPHERE TDS — general technical data for product introduction, customs declaration, and customer evaluation.

▸ Coating Grade Specification Sheet — detailed particle size distribution, pH, and iron content for coating formulations.

Packaging & Delivery

▸ 600 kg jumbo bags — approximately 40 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

❓ What does 90 Mesh Through mean?

▸ It means the product is screened to pass 90 mesh, making it suitable for general filler, coating, and putty applications.

❓ Is this grade suitable for smooth coatings?

▸ It can be used in many coating and surface systems, but very smooth thin-film coatings may require a finer coating-grade selection.

❓ Why is true density 0.90-0.95 g/cm³ useful?

▸ This density range offers stable filling and handling while still providing weight reduction compared with dense mineral powders.

❓ Can this grade be sold as a general cenosphere filler?

▸ Yes. It is suitable for general direct sales, distributors, and customers evaluating cenosphere filler applications.

❓ Can SEPPE provide samples?

▸ Yes. Samples, TDS, and batch COA can be provided for testing.

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. Quality control focuses on particle size consistency, low iron content, particle density, moisture, chemical composition, and dispersion performance for coating applications.


★ 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 process covers the key stages from raw material verification to final shipment, with acceptance criteria confirmed by the applicable TDS, COA, purchase specification, or agreed test plan.

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
Particle Size Distribution ISO 13320:2020
Laser Diffraction
D50: 45–60 μm
D98: 105–140 μm
pH Value ISO 787-9:2019
10% Aqueous Suspension
7.0 ± 1.0
Iron Content (reported as Fe₂O₃) X-Ray Fluorescence (XRF) < 6%
True Density
(Particle Density)
ISO 12154:2014
Gas Displacement Pycnometry
0.70–0.90 g/cm³
Moisture Content
(Matter Volatile at 105°C)
ISO 787-2:2021
105°C, 2 h
≤ 0.3%
Chemical Composition X-Ray Fluorescence (XRF) SiO₂: 55–65%
Al₂O₃: 27–33%
Dispersion Test High-Speed Mixing + Hegman Gauge
Agreed Coating System
According to the selected coating system and customer-approved test plan

Testing note: Final specifications, test methods, acceptance limits, and testing frequency shall be confirmed in the applicable TDS, batch COA, purchase specification, or customer-approved test plan.

Core Testing Equipment

▸ Our laboratory equipment supports the coating-grade control parameters listed above:

• Laser Particle Size Analyzer – particle-size distribution by ISO 13320:2020.

• pH Meter – pH of a 10% aqueous suspension by ISO 787-9:2019.

• XRF Spectrometer – iron content and major oxide composition.

• Gas Pycnometer – particle density by gas displacement pycnometry in accordance with ISO 12154:2014.

• Drying Oven and Analytical Balance – matter volatile at 105°C by ISO 787-2:2021.

• High-Speed Disperser and Hegman Gauge – dispersion assessment under customer-agreed coating-system conditions.

High-Speed Dispersion Test EquipmentGas PycnometerCoating Quality Control Equipment

Quality Assurance & Traceability

▸ CENOLITE 910 quality control covers the following critical parameters:

• Particle size distribution – laser diffraction by ISO 13320:2020; D50: 45–60 μm and D98: 105–140 μm.

• Iron content (reported as Fe₂O₃) – controlled below 6% by XRF.

• pH value – 10% aqueous suspension by ISO 787-9:2019; 7.0 ± 1.0.

• True density (particle density) – gas displacement pycnometry by ISO 12154:2014; 0.70–0.90 g/cm³.

• Moisture content – matter volatile at 105°C by ISO 787-2:2021; ≤ 0.3%.

• Dispersion performance – evaluated with high-speed mixing and a Hegman gauge under the selected coating system and agreed test conditions.

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?

▸ Dispersion can be evaluated using high-speed mixing and a Hegman gauge under a customer-agreed coating system, addition level, mixing speed, test duration, and acceptance criterion.

❓ 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
Get a Quote & Free Samples
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