Breakthrough Innovation: Resistant to extreme high temperatures of 1300 ℃! Woqin Technology Resolves the Industrial Protection Application of New Aerogel

1、 Industry pain points and technological breakthroughs

Traditional aerogels face two major problems:

Contradiction between mechanical properties and temperature resistance: inorganic aerogels (such as silica) are brittle, while organic aerogels (such as polyimide) are flammable and easy to collapse at high temperature12.

Insufficient adaptability to extreme environments: Structural failure under high temperature impact leads to a sudden drop in thermal insulation performance, posing a threat to personnel and equipment safety.

Professor Zhao Haibo's team developed GT-mM-AZn aerogel through the chemical physical double crosslinking network design, taking gelatin siloxane composite substrate as the core, introducing montmorillonite/mica ceramic filler and ammonium polyphosphate/zinc borate (APP/ZB) flux. The core breakthrough lies in:

Performance at room temperature: Compressive modulus of 17.79 MPa, can withstand 50kg trampling with only 0.5mm deformation, supports secondary processing such as cutting and stamping.

High temperature strengthening: After being treated at 800 ℃ for 30 minutes, the compressive strength increased to 2.726 MPa (an increase of 268%), and the structural stability improved by 1.

• Ultra high temperature protection: The flame burns continuously at 1300 ℃ for 1 hour, and the temperature on the back remains stable below 300 ℃. The edge area is only 30 ℃, isolating 80% of the heat.

2、 Material preparation and core mechanism

1. Preparation process

Substrate construction: Gelatin provides flexible reinforcement, siloxane (TEOS/KH560) forms a rigid skeleton through hydrolysis condensation reaction, and epoxy groups crosslink with amino groups to strengthen the network.

Filler optimization: MMT/mica enhances high-temperature ceramic forming ability, APP/ZB flux promotes high-temperature molten phase generation, and liquid nitrogen freeze forming ensures uniform pore size.

2. Ceramic reaction mechanism

At high temperatures, the filler and substrate undergo multi-stage phase transitions:

400-600 ℃: APP/ZB decomposes into Zn ₂ P ₂ O ₇ and BPO ₄ glass phases, bonded with mica particles 12.

• Above 800 ℃: The siloxane skeleton is transformed into SiO ₂ ceramic, and the molten phase fills the pores, forming a dense eutectic structure and improving the thermal shock resistance by 18%.

3、 Performance advantages and measured data

Performance index test results Industry comparison limiting oxygen index (LOI)>60%, far higher than ordinary flame retardant materials (20-30%), vertical combustion grade UL-94 V0 (no droplets, self extinguishing time<10 seconds), higher than most engineering plastics (V1-V2), heat release rate (HRR) decreased by 58.3% compared with pure gelatin aerogel, significantly reducing fire diffusion risk, thermal conductivity<0.03 W/m · K (normal temperature), better than traditional rock wool (0.04 W/m · K)

4、 Commercial application scenarios

In the field of new energy, the fireproof isolation layer of lithium battery pack can suppress the spread of thermal runaway.

Heavy industry protection: lining steel and metallurgical kilns to reduce heat loss.

Aerospace: Rocket engine compartment insulation to resist ultra-high temperature airflow.

Building safety: Fireproof coating for high-rise buildings to enhance escape time windows.

5、 Value of cooperation with Woqin Technology

Hebei Woqin Trading Co., Ltd. relies on technology transformation from universities to provide:

Customized aerogel felt: support flexible adjustment of size, density and temperature resistance grade.

One stop solution: covering the entire process from material selection to installation guidance.

Cost optimization plan: Reduce unit price through large-scale production to help enterprises reduce costs and increase efficiency.