Thousand-Year-Old Palaces, Glued with Fireproof Defense - Juhuan B1 Fireproof Foam Adhesive Safeguards the Cultural Heritage of the Forbidden City

A Century-Old Fire Protection Challenge for Ancient Buildings

As the world's largest wooden architectural complex, the Forbidden City faces challenges such as lightning strikes (averaging 32 times a year), electrical fires (accounting for 61% of ancient building fires), and extremely cold winter temperatures of -20°C. Juhuan Technology has specially developed a B1 fireproof foam adhesive system, which has achieved three core breakthroughs:

• Carbonization Flame Retardant Technology: Forms a 0.8mm dense carbonized layer upon exposure to fire, with an oxygen index of 32%, achieving self-extinguishing within one second after being removed from the flame.

• Low-Temperature Adaptability: Maintains a bonding strength of 3.2MPa in a -30°C environment, solving the problem of traditional materials becoming brittle in winter.

Matrix of Cultural Heritage Protection Value

Dimension Traditional Materials Juhuan Solution Improvement Value Fire Resistance Duration 0.5 hours 2 hours +300% Thermal Deformation Rate 12% 3% -75% Chemical Compatibility Contains corrosive components Neutral pH 100% Safety

Proof of Concept in Benchmark Projects

In the restoration of the eaves corners of the Hall of Supreme Harmony:

• Filled 76 structural gaps, achieving an air tightness of 0.03m³/(h·m²)

• Integrated with a fire eye monitoring system to build a dual defense line of "physical flame retardancy + intelligent early warning"

• Certified as a "Recommended Product for Ancient Building Restoration" by the Palace Museum

"This is a perfect marriage of modern technology and ancient architectural wisdom," noted the project leader. This technology has been extended to cultural heritage protection projects such as the Potala Palace.