Breakthrough Innovation: Resistant to Extreme High Temperatures of 1300 ℃ — Woqin Technology Unlocks New Industrial-Grade Aerogel Applications

1. Industry Pain Points and Technological Breakthroughs

Conventional aerogels have long been trapped in two dilemmas:

• Strength vs. heat resistance — Inorganic types (e.g., silica) are brittle; organic types (e.g., polyimide) are flammable and structurally unstable under high heat.
• Extreme environment failure — Rapid degradation under thermal shock leads to dangerous loss of insulation.

Solution: Professor Zhao Haibo’s team developed GT-mM-AZn aerogel, using a chemical–physical dual cross-linking network with a gelatin–siloxane composite substrate, reinforced by montmorillonite/mica ceramic fillers and APP/ZB flux.

Performance Highlights:

• Room temperature: Compressive modulus 17.79 MPa; withstands 50 kg load with just 0.5 mm deformation; supports cutting & stamping.
• Heat strengthening: After 800 ℃ × 30 min, compressive strength ↑ 268% (2.726 MPa).
• Ultra-high temp protection: 1300 ℃ continuous flame × 1 h → back surface < 300 ℃, edge only 30 ℃ rise, blocking ~80% of heat.

2. Material Preparation & Core Mechanism

2.1 Preparation Process

• Substrate: Gelatin for flexibility; siloxane (TEOS/KH560) hydrolysis–condensation for rigid skeleton; epoxy–amino cross-linking for network stability.
• Fillers: MMT/mica improve ceramic-forming capacity; APP/ZB promote molten phase generation; liquid nitrogen freeze-forming ensures uniform pores.

2.2 High-Temperature Ceramic Reaction

• 400–600 ℃: APP/ZB → Zn₂P₂O₇ & BPO₄ glass phases bonding with mica.
• > 800 ℃: Siloxane skeleton converts to SiO₂ ceramic; molten phase fills pores to form dense eutectic structure → thermal shock resistance ↑ 18%.

3. Performance Advantages & Data

GT-mM-AZn aerogel exhibits a limiting oxygen index (LOI) above 60%, far exceeding the 20–30% range of conventional flame-retardant materials, which means it can sustain combustion only in extremely oxygen-rich conditions. In vertical combustion tests, it achieves UL-94 V-0 rating—no molten droplets and self-extinguishing in under 10 seconds—surpassing most engineering plastics that typically reach only V-1 or V-2.

Its heat release rate (HRR) is reduced by 58.3% compared to pure gelatin aerogel, significantly lowering the risk of fire spread. The thermal conductivity remains below 0.03 W/m·K at room temperature, outperforming traditional rock wool (~0.04 W/m·K), thus ensuring excellent thermal insulation in both normal and extreme conditions.

4. Application Scenarios

• New energy: Battery pack fire-resistant isolation layer to contain thermal runaway.
• Heavy industry: Kiln lining for steel/metallurgy to reduce heat loss.
• Aerospace: Rocket engine compartment insulation against ultra-hot airflow.
• Construction: High-rise fireproof coatings extending evacuation time windows.

5. Woqin Technology’s Value Proposition

Hebei Woqin Trading Co., Ltd. offers:

• Custom aerogel felts: Adjustable size, density, and temperature grade.
• Turnkey solutions: From material selection to installation guidance.
• Cost-down strategies: Scale production to lower unit prices without sacrificing performance.