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Hollow Ceramic Microspheres For Paints and Coatings

Cenosphere is a lightweight, inert, hollow sphere filled with inert air or gas, typically produced as a byproduct of coal combustion at thermal power plants.
Availability:
Quantity:
  • 100Mesh

  • CENOLITE

  • 2621900090

Hollow Ceramic Microspheres For Paints and Coatings

Hollow ceramic microspheres for paints and coatings designed to reduce coating density, improve flow and leveling, support thermal insulation, and extend film volume. This coating-oriented grade is suitable for architectural coatings, industrial paints, roof insulation coatings, putties, and surface finishing systems.


★ Paints & Coatings Grade
◆ Hollow Ceramic Structure
★ Low Density Filler
◆ Improved Flow & Leveling
★ Thermal Insulation
◆ Low Iron Grade Available
ISO 9001:2015 Certified · Batch QC · COA Available · Custom Mesh & Density Selection

What Is Hollow Ceramic Microspheres For Paints and Coatings?

▸ SEPPE hollow ceramic microspheres for paints and coatings are lightweight aluminosilicate spheres selected for coating systems that require lower density, better flow, and improved film volume efficiency.

▸ The hollow structure contributes to thermal insulation, while the smooth spherical morphology supports dispersion, leveling, sanding, and spray application.

▸ This product is suitable for general coating formulations and can be supplied with customized mesh, density, pH, and low-iron requirements according to application targets.

Key Performance Characteristics

▸ Lower Coating Density: Hollow ceramic particles reduce film weight while maintaining coating volume.

▸ Improved Flow & Leveling: Spherical particles reduce internal friction and support smoother application.

▸ Thermal Insulation Function: Hollow microspheres help reduce heat transfer in roof, wall, and functional insulation coatings.

▸ Low Iron Grade Available: Controlled iron content helps reduce color interference in white and light-colored coatings.

▸ Formulation Flexibility: Suitable for water-borne, solvent-borne, putty, filler, texture, and protective coating systems after compatibility testing.

Hollow Microsphere Structure   Cenosphere SEM Structure

Typical Applications

▸ Architectural wall paints and decorative surface coatings

▸ Roof heat-insulation and reflective coating systems

▸ Industrial protective coatings and equipment coatings

▸ Putties, fillers, skim coats, and repair compounds

▸ Textured coatings and lightweight coating formulations

smooth coating 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 ceramic powder
Color Light grey to white
Recommended Use Paints, coatings, putties, and surface finishing
pH Value 7.0 ± 1.0 typical
True Density 0.70-0.90 g/cm³
Particle Size Coating mesh grade available
Iron Content Low iron grade available

Technical Documents

▸ CENOSPHERE TDS (General) — for product introduction, customs declaration, and bidding documents.

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

Packaging & Delivery

▸ 600 kg jumbo bags — approximately 40 bags per 40' High Cube FCL (total ~24 MT), 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.

cenosphere jumbo bag cenosphere 600 kg bag cenosphere storage cenosphere container loading
cenosphere packing process reliable container shipment efficient logistics 40 High Cube FCL

FAQ

❓ What coating systems can use hollow ceramic microspheres?

▸ They can be evaluated in architectural coatings, industrial paints, thermal insulation coatings, putties, and surface finishing systems.

❓ Will it make the coating surface rough?

▸ Proper mesh selection and dosage help maintain surface smoothness. SEPPE can recommend a suitable coating grade based on film thickness and finish requirements.

❓ Does pH matter in coating formulation?

▸ Yes. Neutral pH improves compatibility with resin, pigment, and additive systems.

❓ Can it be used in white coatings?

▸ Yes. Low iron grade is available to help reduce yellowing and color interference.

❓ Can samples and coating trial support be provided?

▸ Yes. Samples, TDS, COA, and grade selection support are available for dispersion and compatibility trials.

Need Samples or Custom Specifications?

Contact SEPPE for product specifications, samples, 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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