Expanded Vitrified Microsphere
Overview
Expanded Vitrified Microsphere is an inorganic material produced by expanding and vitrifying glass or ceramic precursors at high temperatures. The resulting microspheres are lightweight, hollow, and exhibit excellent thermal and mechanical properties. Due to their unique structure, these microspheres are widely used in industries requiring lightweight, insulating, or fire-resistant materials. They are particularly valued in construction for their ability to reduce weight while maintaining strength and durability.
Physical and Chemical Properties
Expanded Vitrified Microspheres are characterized by their low density, typically ranging from 0.1 to 0.3 g/cm³, and high compressive strength. Their hollow structure contributes to excellent thermal insulation properties, with thermal conductivity values as low as 0.05 W/m·K. Chemically, they are inert and stable, resisting most acids, alkalis, and organic solvents. Their high melting point (1200-1400°C) makes them suitable for high-temperature applications. The microspheres are also non-combustible, enhancing their use in fireproofing materials.
Main Applications
In construction, Expanded Vitrified Microspheres are used in lightweight concrete, plaster, and mortar to reduce weight and improve thermal insulation. They are also incorporated into composite materials for automotive and aerospace applications, where weight reduction is critical. Other uses include coatings and paints to enhance texture and insulation, as well as in fireproofing materials due to their high-temperature resistance. Their chemical stability makes them suitable for use in harsh environments, such as chemical processing plants.
Safety and Storage
Expanded Vitrified Microspheres are non-toxic and non-flammable, posing minimal health risks. However, dust generated during handling can irritate the respiratory system, so dust masks and proper ventilation are recommended. Storage should be in a dry, cool environment to prevent moisture absorption, which can affect performance. Bulk storage should avoid compaction to preserve the microspheres' lightweight properties.
B2B Procurement Guide
When procuring Expanded Vitrified Microspheres, key specifications to consider include particle size distribution, density, and thermal conductivity. Suppliers should provide test reports or certifications to verify these properties. Bulk purchases often come with cost advantages, but ensure the supplier can meet consistent quality standards. For specialized applications, custom particle sizes or coatings may be available. Always compare prices and terms from multiple suppliers to secure the best deal.
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