Phenolic Insulated Duct Panel Core Structure and Materials

Sandwich Structure
The standard structure is an aluminum foil (common thickness: 60μm) / phenolic foam (density: 40–65kg/m³) / aluminum foil composite board, formed through an adhesive bonding process.

Foam Performance

Thermal conductivity: 0.026–0.03W/(m·K), featuring excellent thermal insulation efficiency.

Fire resistance rating: Complies with BS476 CLASS O or ASTM E84 test standards (flame spread index ≤ 10, smoke density index = 0).

Technical Parameters of Phenolic Insulated Duct Panel

Standard Sizes: 3950×1200mm, 3950×1200mm, etc.

Thickness: Common specifications include 20/25mm, etc.

Density: Generally 40–60kg/m³.

Aluminum Foil Thickness: Such as 60/80 microns, etc.

Compressive Strength: Approximately 0.25MPa.

Flexural Strength: Approximately 2MPa.

Water Absorption Rate: Generally not exceeding 0.25%.

Maximum Operating Temperature: Up to around 120℃.

Phenolic Insulated Duct Panel Performance Characteristics

Excellent Fire Resistance: Phenolic insulation boards are non-combustible when exposed to fire, with a combustion performance rating of up to Class A. A 100mm-thick phenolic foam can resist flame penetration for more than 1 hour, forming a carbonized layer on the surface under flame action to prevent flame spread.

Good Thermal Insulation Performance: With a low thermal conductivity, generally ranging from 0.018–0.025W/(m・K), it can effectively reduce heat loss in air conditioning systems and improve energy utilization efficiency.

Corrosion and Aging Resistance: It can withstand erosion from almost all inorganic acids, organic acids, and organic solvents. No obvious aging occurs after long-term exposure to sunlight, ensuring a long service life.

Lightweight: With a density generally below 100kg/m³, it can reduce the self-weight of buildings, lower structural loads, and facilitate installation with high construction efficiency.

Good Sound Absorption Performance: The closed-cell foam structure helps block sound, reducing pipeline noise and minimizing the use of sound-absorbing accessories.