Zirconia Composite Nano Thermal Insulation Gr-102

I. Principles of Nano-Filling and Pore Structure Optimization

GR-102 possesses ultrafine particle size and high specific surface area, enabling it to fully fill micropores and capillaries within the matrix material, thereby forming a denser microstructure.

• Reducing connected porosity blocks heat conduction pathways

• Optimizes pore size distribution to create tortuous thermal flow paths

• Decreases convective and radiative heat transfer efficiency

Through the mechanism of "micro-pore sealing + thermal path elongation," the overall thermal conductivity is reduced.

II. High-Temperature Stable Zirconia Phase Structure Principle

The zirconium-based nano-components in the composite system form stable crystalline structures (e.g., highly stable zirconia phase) under high-temperature conditions, exhibiting:

• High melting point

• Low thermal conductivity

• Excellent thermal shock resistance

This stable crystalline phase forms a high-temperature-resistant framework within the material, effectively suppressing high-temperature shrinkage and structural collapse, thereby enhancing the high-temperature strength and service life of refractory materials.

III. Mechanism of Enhanced Volcanic Cement Reactivity

Reactive SiO₂ in microsilica undergoes secondary hydration reactions with Ca(OH)₂ in cement-based or castable systems:

• Forming high-strength C-S-H gel

• Enhances interfacial bonding strength

• Improves microstructural uniformity

This reaction not only enhances mechanical properties but also further refines the pore structure, strengthening thermal insulation effects at the microscopic level.

IV. Multi-layer Thermal Resistance Mechanism

Forming a multilayer thermal resistance system through "microsilica filling + zirconia phase framework + nano-interface enhancement":

• Reduced solid-phase thermal conductivity

• Enhanced grain boundary scattering

• Optimized thermal stress dispersion

Ultimately achieving comprehensive performance enhancements including low thermal conductivity, high structural stability, thermal shock resistance, and corrosion resistance.