Application scope of polyurethane hard foam insulation composite board

Polyurethane Rigid Foam Insulation Composite Panel is a high-performance insulation material that uses polyurethane hard foam as the core material and has composite metal or non-metal panels on both sides (such as color steel plates, aluminum foil, cement fiberboard, etc.). With its excellent thermal insulation performance, lightweight and high strength, fire and moisture resistance, and convenient construction, it is widely used in construction, cold chain, industrial equipment, transportation and other fields. The following is a detailed analysis of its core application scope:

1. Construction field

1. Building exterior wall insulation system

Application scenarios: Exterior wall insulation layer of residential, commercial buildings, and public buildings.

Advantages:

High-efficiency insulation: Polyurethane hard bubbles have low thermal conductivity (≤0.024W/(m·K)), which can significantly reduce building energy consumption and meet energy-saving standards (such as China's 'Public Building Energy-saving Design Standards' GB 50189).

Lightweight and high strength: The composite panel is lightweight (about 15-25kg/m²), which reduces building loads and is also strong in impact resistance, making it suitable for high-rise buildings.

Fire safety: The composite panel can be made of fire-resistant materials (such as Class A fire rock wool sandwich panels), or the polyurethane core material can reach the B1 fire-resistant standard by adding flame retardant.

Decoration integration: The outer panels can be pre-coated with fluorocarbon paint, wood grain transfer, etc., to achieve the integration of insulation and decorative functions, shorten the construction cycle.

2. Roof insulation system

Application scenarios: Roof insulation of large-span buildings such as industrial factories, warehouses, and stadiums.

Advantages:

Waterproof and moisture-proof: Polyurethane hard bubbles have high cell rate (≥95%), which effectively prevents water vapor from penetration and avoids condensation or water leakage on the roof.

Wind pressure resistance: The composite panel is connected to the roof structure through mechanical fixation or bonding, and can withstand wind force above level 12.

Strong weather resistance: The panel is made of aluminum-zinc-plated steel plate or aluminum-magnesium-manganese alloy, and its corrosion resistance life is more than 20 years.

3. Cold storage insulation system

Application scenarios: Low-temperature cold storage (below 0℃) or ultra-low-temperature cold storage (below -25℃) in food processing plants, logistics centers, and pharmaceutical warehouses.

Advantages:

Very low thermal conductivity: It can maintain stable thermal insulation performance under -50℃ environment and reduce cooling capacity loss.

Moisture-proof seal: The joints of the composite panel are sealed with polyurethane foam glue to form a continuous insulation layer without cold bridges.

Structural strength: It can withstand the impact of cargo stacking or forklift operation in the cold storage to avoid damage to the insulation layer.

2. Cold chain logistics field

1. Refrigerated truck insulation compartment

Application scenarios: fresh food transport trucks, medical cold chain trucks, vaccine transport trucks, etc.

Advantages:

Lightweight design: Composite panels reduce weight by 30% compared to traditional fiberglass compartments, improving fuel economy.

Quick installation: Modular design, the carriage can be assembled within 4-6 hours, shortening vehicle downtime.

Temperature stability: In an environment of -25℃~+25℃, the temperature fluctuates in the car ≤±1℃, meeting the requirements of GSP (Pharmaceutical Business Quality Management Specifications).

2. Cold chain container

Application scenarios: Refrigerated containers for sea, railway and road transport.

Advantages:

Corrosion resistance: The panel is made of 316L stainless steel or marine grade aluminum alloy, which is suitable for marine high salt spray environment.

Insulation life: Polyurethane hard foam is not easy to age under long-term vibration and temperature cycle, and its service life is more than 15 years.

Traceability: The composite board has built-in RFID tags to realize temperature monitoring and data traceability throughout the cold chain logistics.

III. Industrial equipment field

1. Industrial pipeline insulation

Application scenarios: Insulation and insulation of petroleum, chemical, steam and other pipelines.

Advantages:

Special shape adaptation: can customize curved, L-shaped and other special shape composite boards to closely fit the pipe surface and reduce thermal bridges.

Corrosion resistance: The outer layer is made of 304 stainless steel or epoxy fiberglass, which resists chemical media corrosion.

Rapid repair: The modular design facilitates local replacement and shortens pipeline downtime.

2. Storage tank insulation

Application scenarios: liquefied natural gas (LNG) storage tank, liquid oxygen storage tank, chemical raw material storage tank, etc.

Advantages:

Low temperature performance: Polyurethane hard foam can still maintain flexibility at -196℃ (LNG operating conditions) and avoid brittle cracks.

Moisture-proof and anti-freeze: A double-layer sealing structure is adopted at the joints of the composite panel to prevent the condensate from freezing and causing the insulation to fall off.

Wind load resistance: The plate type is optimized through finite element analysis and can withstand wind speed of 100m/s (super typhoon level).

3. Boiler and heat exchanger insulation

Application scenarios: Insulation of high-temperature equipment such as power station boilers, industrial kilns, plate heat exchangers, etc.

Advantages:

High temperature resistance: Use special formula polyurethane hard bubbles, which can withstand temperatures up to 150℃ in the short term and use temperatures up to 120℃ in the long term.

Energy-saving effect: reduce heat dissipation loss on the surface of the equipment and improve thermal efficiency by 5%-10%.

Safety protection: The outer layer uses fireproof rock wool or calcium silicate board to prevent scalding from people.

4. Transportation field

1. Ship insulation

Application scenarios: Insulation of cargo holds for fishing boats, cruise rooms, liquefied gas transport ships (LNG ships).

Advantages:

Fire protection grade: Comply with the A60 fire protection standard of SOLAS Convention (International Convention on the Safety of Life at Sea) (1 hour fire resistance integrity).

Moisture-proof and mildew-resistant: The panel adopts galvanized steel plate + mildew-proof coating to adapt to high-humidity environments in the ocean.

Shock absorption and noise reduction: Polyurethane hard bubbles can absorb ship vibration energy and reduce cabin noise (target ≤55dB).

2. Subway and tunnel insulation

Application scenarios: insulation and anti-freeze of subway stations, tunnel walls, and ventilation ducts.

Advantages:

Anti-condensation: In low-temperature and high-humidity environments (such as northern subway tunnels), prevent dew on the surface of the structure from condensing and dripping.

Durability: The composite plate passes impact resistance test (50kg weight 1m high free fall without damage) and adapts to high-frequency vibration of the subway.

Environmental protection: Fluorine-free foaming agents (such as cyclopentane) are used to comply with the restrictions on VOCs under EU REACH regulations.

5. Special application scenarios

1. Clean Room and Laboratory

Application scenarios: walls and roofs of electronic factories, pharmaceutical GMP workshops, and biosafety laboratory.

Advantages:

Airtightness: Silicone sealant is used at the joints of the composite panel, and the airtightness level reaches N1 (leakage rate ≤0.05%/h).

Anti-static: The panel is coated with an anti-static coating, with a resistance value of 10⁶-10⁹Ω to avoid dust adsorption.

Easy to clean: Seamless design is easy to disinfect and meets ISO 14644 clean room standards.

2. Acoustic sound insulation

Application scenarios: sound insulation barriers for buildings around the airport.

Advantages:

Sound absorption performance: Polyurethane hard bubble porous structure can absorb medium and high frequency noise (sound absorption coefficient ≥0.8).

Structural strength: The composite panel can withstand 1kPa wind pressure, suitable for outdoor sound insulation wall applications.

Decorative: The outer panel can be customized with perforation rate (5%-20%) and aperture (φ1-5mm), achieving sound absorption and aesthetic balance.

6. Key points of selection and construction

Key parameters for selection:

Use temperature range: Choose normal type (-50℃~+120℃) or low-temperature type (-196℃~+120℃) according to the working conditions.

Fire protection grade: The construction field must comply with GB 8624 'Creation of Combustion Performance of Building Materials and Products' (such as B1 Class Flame Retardant).

Compression strength: Select according to load requirements (such as ≥150kPa for roof and ≥300kPa for floor).

Construction precautions:

Seam treatment: Use the 'one glue and one nail' process (spray glue seal + self-tapping nail fixation) to ensure airtightness and structural strength.

Moisture-proof measures: lay a moisture-proof layer (such as 0.2mm polyethylene film) in humid environments (such as cold storage floors).

Fireproof isolation: Install fireproof casing at the electrical circuit through the board to prevent local overheating and causing fire.