Silica Rock Sandwich Panel

Product Details

Silica rock sandwich panel often called silica-modified polystyrene (EPS) panels or thermosetting modified polystyrene (TPS) sandwich panels, are a new type of Class A fire-resistant and thermally insulating composite material. They are created by subjecting traditional EPS (polystyrene board) to a high-molecular-weight siliconization treatment, which fundamentally alters its physical properties. This product perfectly solves the contradiction between the flammability of organic materials (such as EPS and PU) and the poor thermal insulation and high water absorption of inorganic materials (such as rock wool), making it the globally recognized gold-standard enclosure material in the precast concrete building (PEMB) field.

Structural Form

• Composite Process: A fully automated continuous production line is used, employing liquid polyurethane rigid foam (PIR/PUR) as an adhesive. Under high pressure, the color-coated steel sheet and silica rock core material are foamed and bonded together in a single process.
• Connection Method: Primarily using concealed tongue and groove connections, combined with waterproof sealing strips, to achieve nail-free waterproofing and a clean, streamlined appearance.

Panel Structure

• Outer Layer: Aluminum-zinc coated steel sheet (AZ150), surface can be treated with PVDF or SMP coating, UV resistant and corrosion resistant.
• Middle Layer: High-density silica sandstone insulation core material.
• Inner Layer: Color-coated steel sheet or aluminum foil (for clean rooms).

Key Performance Parameters

Features of Silica Rock Sandwich Panel

• A2 Fire Rating: Unlike ordinary organic foam, silica sandstone panels form a carbonized layer on the surface when exposed to open flame, preventing flame spread, self-extinguishing upon removal of the flame, and producing no molten droplets, with extremely low smoke and toxic emissions.
• Superior Insulation: Closed-cell rate of over 95%, thermal conductivity close to PU board, far superior to traditional rock wool board, making it an ideal material for achieving over 65% energy savings in buildings.
• Hydrophobic: Stable molecular structure, extremely hydrophobic. Even after prolonged immersion or exposure to high humidity, it is not prone to water absorption and deformation, preventing insulation failure and increased panel weight due to moisture.
• Lightweight & High Strength: Its density is significantly lower than rock wool, reducing the load on the steel structure while maintaining excellent bending and compressive strength.
• Dimensional Stability: It exhibits low shrinkage and expansion rates in environments with drastic temperature fluctuations, reducing cracking and extending the lifespan of the building envelope.

Advantages of Silica Rock Sandwich Panel

• Global Compliance: Easily passes the most stringent global fire safety inspections (such as Middle Eastern Civil Defense and UK BS standards), making it particularly suitable for densely populated areas and high-rise buildings, significantly reducing insurance and legal risks for owners.
• Low Life Cycle Cost (LCC): Although the unit price is slightly higher than EPS, its extremely low thermal conductivity and ultra-long lifespan significantly reduce air conditioning energy consumption and maintenance costs, resulting in a very high return on investment (ROI).
• Construction-Friendly: Lightweight and highly flexible, easy to cut and handle. Combined with mature interlocking technology, installation is over 30% faster than rock wool boards.
• Environmentally Friendly and Healthy: No CFC (Freon) foaming during production; no harmful gas emissions during use, meeting LEED and WELL building standards.

Application Scenarios

High-Standard Warehousing and Logistics: Cross-border e-commerce warehouses, cold chain logistics parks (especially fire-resistant partitions), and high-bay automated warehouses.

High-End Manufacturing: Electronic component factories, lithium battery production workshops, precision instrument processing areas, and aerospace assembly workshops.

Cleanroom Engineering: Biopharmaceutical plants, GMP workshops, hospital operating rooms, PCR laboratories, and aseptic food processing workshops.

Public and Commercial Buildings: Airport terminals, high-speed rail stations, large shopping malls, data centers (IDC), and stadiums.

Modular Buildings: High-end packing crates, folding crates, modular hotels and apartments (the preferred enclosure material for exports to Europe, America, and Australia).

Canglong Group Value-Added Services

We deeply understand the importance our global clients place on material compliance. The silica rock sandwich panel provided by Canglong Group not only strictly adhere to Chinese GB standards, but also offer testing reports conforming to ASTM (USA), BS (UK), and EN (EU) standards, tailored to project requirements. We provide a full-process service, from detailed design and precision manufacturing to global logistics and remote installation guidance, ensuring your projects can be implemented safely and efficiently anywhere in the world.

Sandwich Panel Production Workshop

Sandwich Panel Packing & Shipping

All the products are loaded at the loading site of our factory using crane and forklift by our skilled workers, who will prevent the goods to be damaged. And all the structure components, panels, bolts and sorts of accessories will be well packed with standard package and it is suitable for ocean transport.

Our Certificates

Our sandwich panel certificates include EU CE certification, BPS certification, and ICC certification.

Application of Sandwich Panels

Usage scenario: Insulated sandwich panels are used as exterior walls and interior partitions, installed vertically or horizontally on single span or multi span structures. Such as industrial buildings, steel frame structures, warehouses and logistics centers, commercial buildings and offices, fire-resistant buildings, agricultural and livestock buildings, sports halls, exhibition halls, factories, garages, hangars, barns, prefabricated houses, cold storage, clean room, etc.