Expanded Microspheres (Exp Series)
Petra Expanded Microspheres (EXP Series) are lightweight inorganic mineral microspheres specially designed for advanced industrial applications. These microspheres offer low density, excellent thermal insulation, high thermal stability, and good flowability, making them ideal for reducing overall formulation weight while maintaining product performance.
Manufactured using advanced expansion technology, Petra EXP Microspheres feature a closed-cell structure that provides durability, dimensional stability, and improved material efficiency. They are widely used in construction chemicals, dry-mix mortars, coatings, polymer systems, lightweight composites, insulation materials, and industrial fillers.
These premium lightweight fillers help improve workability, enhance insulation performance, reduce material consumption, and optimize processing across various industrial applications.
Properties of Petra Expanded Microspheres:
Appearance: White lightweight powder, excellent flowability
Under the Microscope: Closed-cell expanded cellular microspheres
Bulk Density: 0.11 ~ 0.42 g/cm³
Particle Size: 0 – 850 microns
Thermal Conductivity: Low
Moisture: Less than 0.5%
Chemical Nature: Inert and non-reactive
Flammability: Non-combustible
Melting Point: 1260 ~ 1340°C
Brightness: High and consistent whiteness
Petra Expanded Microspheres can readily be blended into various industrial compounds and formulations, making them adaptable to a wide variety of production processes including dry-mix blending, spraying, casting, coating, compounding, and lightweight formulation systems.
UNIQUE CHARACTERISTICS OF PETRA EXPANDED MICROSPHERES
Lightweight Performance: Ultra-low bulk density helps reduce the overall weight of formulations and finished products.
Excellent Thermal Insulation: Closed-cell structure provides low thermal conductivity, making it ideal for insulation applications.
High Volume Efficiency: Improves formulation volume and lightweight performance without affecting processing efficiency.
Better Workability: Enhances flowability, spreadability, sanding, and application properties during manufacturing and use.
Reduced Shrinkage & Cracking: Helps improve dimensional stability and surface consistency in finished products.
Chemical Stability: Chemically inert and compatible with cement, gypsum, lime, resin, and polymer systems.
Improved Acoustic Insulation: Internal air pockets help provide sound dampening and acoustic insulation properties.
Eco-Friendly Solution: Supports lightweight and energy-efficient formulations while reducing raw material consumption.
Wide Industrial Compatibility: Suitable for dry-mix mortars, plasters, putties, coatings, lightweight fillers, polymers, composites, and insulation materials.
Easy Processing: Can be blended into various systems through dry mixing, spraying, casting, coating, and compounding processes.
COMPREHENSIVE OVERVIEW
Petra Expanded Microspheres (EXP Series) are advanced lightweight mineral microspheres specially developed for industrial applications requiring low density, thermal insulation, and improved formulation performance. These microspheres are widely used in construction chemicals, paints and coatings, polymer compounds, insulation materials, and lightweight filler systems.
Their closed-cell structure, low bulk density, and excellent flowability help manufacturers reduce product weight, improve workability, and enhance overall product quality. Petra EXP Series also provides better thermal resistance, dimensional stability, and cost efficiency, making it an ideal solution for modern lightweight industrial applications.
WHY CHOOSE PETRA EXPANDED MICROSPHERES?
Petra Expanded Microspheres offer superior lightweight performance with excellent thermal insulation and formulation efficiency. Their ultra-low density helps reduce overall material weight while improving coverage and yield.
The smooth flowability and stable structure enhance processing performance and reduce shrinkage and cracking in finished products. Petra EXP Series is chemically stable, moisture resistant, and compatible with a wide range of industrial systems including construction materials, coatings, polymers, and insulation products. These microspheres help manufacturers achieve high-performance, energy-efficient, and cost-effective production solutions.
