Thermal insulation VACUUMBASED ON FUMED SILICA

glass woolfiberglasspanel

Overview
Vacuum insulation panels (VIPs) with a fumed silica (nanoporous silicon dioxide) core provide a declared thermal conductivity below 0.004 W/m·K. These panels are designed for demanding thermal management in aerospace, building insulation, cold-chain logistics, refrigeration and other industrial applications. Compared with conventional polyurethane foam and glass wool, fumed-silica VIPs deliver a wider operating temperature range, prolonged service life and more stable insulation performance.

Specification (types)

• Dicing (fine julienne) — Appearance: image; Density: 300–350 kg/m³; Flatness: poor; Strength: high; Thermal conductivity: 1.5–2.5 mW/m·K.
• Slicing (fine julienne, moist) — Appearance: image; Density: 300–350 kg/m³; Flatness: good; Strength: low; Thermal conductivity: 1.5–2.5 mW/m·K.
• Dry-processed fiberglass — Appearance: image; Density: 200–250 kg/m³; Flatness: poor; Strength: extremely strong; Thermal conductivity: 2.0–3.5 mW/m·K.
• Wet-processed fiberglass — Appearance: image; Density: 200–250 kg/m³; Flatness: excellent; Strength: extremely strong; Thermal conductivity: 2.5–3.5 mW/m·K.

Video
The product page includes a demonstration video showing panel construction, handling and thermal performance tests for Vacuum Insulation Panels based on fumed silica.

Advantages

• Safety and environmental compatibility: Manufactured from high-temperature resistant, non-combustible materials; non-toxic when heated; recyclable with low environmental burden.
• Dimensional and thermal stability: Nanoporous core exhibits minimal shrinkage at elevated temperatures; structure and appearance remain stable, maintaining consistent insulation performance over time.
• Weight reduction: For equivalent thermal performance, fumed-silica VIPs can reduce panel weight by over 50% compared with many traditional insulation materials, facilitating lighter system designs.

Technical features / Specifications

• Core material: Fumed silica (nanoporous silicon dioxide).
• Declared thermal conductivity: < 0.004 W/m·K (< 4 mW/m·K).
• Thermal conductivity by type: Dicing/Slicing: 1.5–2.5 mW/m·K; Dry-processed fiberglass: 2.0–3.5 mW/m·K; Wet-processed fiberglass: 2.5–3.5 mW/m·K.
• Density (kg/m³): Dicing 300–350; Slicing 300–350; Dry-processed fiberglass 200–250; Wet-processed fiberglass 200–250.
• Flatness / surface roughness: Varies by manufacturing method (see specification list).
• Mechanical strength: Range from low to extremely strong depending on type; consult technical datasheet for specific values.
• Typical applications: Aerospace, building insulation, cold-chain logistics, refrigeration systems, household appliances and other industrial thermal insulation uses.