What is Polyphen Sandwich Panel?

Polyphen Sandwich Panel is a high-performance building material composed of two metal face layers with a fire-retardant core in between. Its unique "sandwich" structure not only provides mechanical performance but also delivers thermal insulation, fire resistance, and durability. So, how does this panel differ from other sandwich panels?

Compared with traditional sandwich panels, the key difference of Panel lies in the chemical composition and manufacturing process of its core material. The core uses specially modified phenolic resin, offering a higher fire rating and thermal stability, while the face layers typically employ aluminum-zinc coated steel or color-coated steel, further enhancing corrosion resistance and structural strength.

Core Value of Polyphen Sandwich Panel

Panel has attracted wide attention in the building materials industry due to its unique composite structure. It is not a single material but a scientifically combined multi-layer system, forming a lightweight yet high-performance panel.

1. Material Composition

Panel generally consists of three parts:

(1) Core Layer

Made primarily from polyphenol particles, modified and high-pressure foamed to form a lightweight and dense foam structure.

The core provides thermal insulation, soundproofing, and lightweight structural support, serving as the "heart" of the sandwich panel.

(2) Face Layer

Typically uses galvanized steel, color-coated steel, or stainless steel.

Its main functions are to enhance overall strength, protect against external environments, and improve corrosion and weather resistance.

(3) Adhesive Layer

High-strength, weather-resistant adhesives are used to bond the core and steel face layers firmly.

Ensures long-term use without delamination or voids.

The tight bond between the face layers and the core allows the Panel to withstand structural loads while providing thermal and acoustic performance.

2. Manufacturing Process

The production of Panels emphasizes continuous, automated, and precision-controlled processes, with the main steps as follows:

1.Raw Material Preparation

Polyphenol particles are screened and pretreated to ensure uniform size and low impurities.

Steel sheets are coated or galvanized to enhance corrosion resistance.

2.Core Foaming

Polyphenol materials are foamed under high temperature and pressure to form a closed-cell foam structure.

Foam density and uniformity determine the panel's thermal insulation performance.

3.Composite Bonding

Steel sheets are bonded with the foamed core using automated equipment.

High-strength adhesive cures under pressure, ensuring no gaps at the interface.

4.Forming and Cutting

Panels are processed on continuous pressing machines to ensure uniform thickness and flatness.

Panels are cut into different sizes according to project requirements for versatile applications.

5.Inspection and Packaging

Finished panels are inspected for dimensions, bonding strength, fire resistance, and other properties.

Qualified products are packaged uniformly to ensure safety and integrity during transportation.

Core Competitiveness of Polyphen Sandwich Panel

Against the backdrop of increasing requirements for energy efficiency, environmental protection, and safety in the construction industry, Panels have gradually become the preferred material for cleanrooms, cold storage facilities, and high-performance buildings due to their unique composite structure and performance. The main features and advantages are as follows:

1. Lightweight and High Strength

The core of Panels consists of polyphen foam, which is low in density yet structurally stable. Its light weight effectively reduces the overall load of buildings. Despite being lightweight, the composite steel face layers provide compressive and bending strength, suitable for large spans and high-frequency usage environments.

2. Excellent Thermal Insulation

The closed-cell foam structure in the core significantly reduces thermal conductivity, providing outstanding insulation. In hot or cold conditions,Sandwich Panels can effectively reduce energy loss, lowering operational costs for air conditioning and refrigeration systems.

3. Good Sound Insulation

The porous foam core can absorb and block sound waves. Whether in industrial plants or laboratories, Panels can greatly improve indoor acoustic conditions, enhancing comfort for work and living environments.

4. Controllable Fire Resistance

Modified polyphen foam exhibits good flame retardancy when exposed to fire. Combined with high-temperature-resistant steel face layers, the panels meet diverse fire-rating requirements, ensuring basic safety in buildings.

5. Weather Resistance and Durability

The steel face layers are treated with galvanization, color coating, or stainless steel, offering  corrosion and weather resistance. Even in humid and variable environments, the panels maintain stable performance and appearance over time.

6. Easy Installation

Panels are designed for modular standardization, enabling quick assembly during installation. Their lightweight nature allows construction without heavy equipment, significantly shortening construction time and reducing labor costs.

7. Environmentally Friendly and Recyclable

The core material does not release harmful substances during production or use, aligning with green building principles. Both the steel face layers and polyphen materials are recyclable, promoting material reuse.

8. Energy Efficiency and Economic Benefits

Thanks to their insulation and thermal retention properties, Panels help reduce building energy consumption. Over the long term, they can significantly lower air conditioning and refrigeration energy costs, offering strong economic returns.

Feature	Polyphen Sandwich Panel	Traditional Building Materials
Weight	Lightweight	Heavier
Thermal Insulation	Excellent	Average
Sound Insulation	Good	Limited
Fire Resistance	High	Low
Weather & Corrosion	Strong	Ordinary
Installation Efficiency	Modular & Fast	Labor-intensive
Recyclability	High	Low
Energy-saving Effect	Significant	Average

Functional Mechanism of Polyphen Sandwich Panels

Sandwich Panels are widely used in construction due to their special structural design and material properties. The panels utilize the scientific principle of a "sandwich structure" to achieve multiple functions: lightweight, thermal insulation, fire resistance, soundproofing, and durability.

1. Working Principle

Collaborative Sandwich Structure

Core: The polyphen foam core forms a closed-cell structure with nearly immobile air, significantly reducing heat and sound transmission.

Face Layers: Galvanized or color-coated steel sheets act as the exterior, providing compression and bending resistance while protecting the core.

Adhesive Layer: Ensures the core and face layers are firmly bonded, forming a unified structural unit.

This "insulated core, load-bearing exterior" collaboration is the core principle behind the performance of Panels.

Thermal Insulation Principle

The closed-cell foam core acts as numerous "micro air layers" with very low thermal conductivity, preventing heat from spreading through the panel and providing insulation.

Sound Insulation Principle

The foam structure blocks direct sound transmission and dissipates sound energy through its pores. Multiple reflections gradually weaken the sound, improving indoor acoustic conditions.

Fire Resistance Principle

Modified polyphen foam forms a carbonized layer at high temperatures, preventing flames from spreading. Combined with the high-temperature-resistant steel face layers, it effectively delays fire propagation, buying valuable safety time.

2. Working Process

In practical applications, the functions of Panels typically follow these processes:

Thermal Insulation Process

When external temperatures rise or fall, the closed-cell foam core blocks heat transfer, maintaining a stable indoor temperature and reducing heating and cooling energy consumption.

Sound Insulation Process

When external noise occurs, part of the sound wave is reflected by the steel face layers, and the portion entering the foam core is gradually attenuated through multiple reflections, reducing indoor noise levels.

Load-bearing and Protective Process

The steel face layers bear the main structural load, resisting external impacts, wind, and pressure. They also protect the core from mechanical damage and environmental corrosion.

Fire Resistance Process

When exposed to fire, the core forms a protective barrier under high temperature, while the face layers provide physical shielding. Together, they slow down combustion and enhance overall safety.

Multi-Field Value of Polyphen Sandwich Panels

With increasing demands for energy efficiency, environmental protection, and rapid construction, Panels demonstrate broad application potential in the construction and related industries due to their lightweight, thermal insulation, fire resistance, and easy installation features. They not only meet the functional needs of traditional buildings but are also gradually applied to higher-standard and specialized environments.

1. Cleanrooms and Pharmaceutical Facilities

Cleanrooms require high standards for air cleanliness, temperature and humidity control, and sound insulation. Panels, with their smooth and easy-to-clean surface and sealing performance, are ideal for pharmaceutical, electronics, and biological laboratories. They effectively block dust and contaminants, maintaining a stable environment.

2. Cold Storage and Low-Temperature Logistics Centers

In food, pharmaceutical, and chemical industries, cold chain storage demands strict thermal insulation. The low thermal conductivity of Sandwich Panels ensures insulation of cold storage walls, reducing heat loss and operational energy consumption. Their lightweight nature also helps maximize space utilization.

3. Industrial Plants and Warehouses

Industrial facilities often require large-span walls and roofing structures. Panels meet structural load requirements and can be rapidly assembled through modular installation, shortening construction time. In warehouse settings, their soundproofing and fire-resistant properties enhance safety and comfort.

4. Medical and Research Institutions

Hospitals, testing centers, and laboratories require quiet, temperature-stable, and safe environments. The sound insulation and fire-resistant properties of Panels effectively meet these specialized needs, providing a stable environment for high-precision research and medical operations.

5. Commercial and Public Buildings

Malls, stadiums, and exhibition halls demand fast construction, aesthetic appeal, and energy efficiency. Sandwich Panels can be customized in color and coating, delivering both visual appeal and long-term durability.

6. Prefabricated and Modular Buildings

With the rise of prefabricated construction, Panels are widely used in modular houses, temporary buildings, and fast-track projects due to their standardized dimensions and compatibility. Their lightweight yet high-strength combination allows rapid assembly and use.

Application Scenario	Key Requirements	Polyphen Sandwich Panel Advantages
Cleanrooms/Pharmaceutical	Sealing, flatness, cleanliness	Easy to clean, tightly structured, contamination-proof
Industrial/Warehouse	Large spans, construction speed	Modular assembly, high load-bearing, fire & sound resistant
Medical/Research	Safety, stability	Fire retardant, good sound insulation, stable temperature
Cold Storage/Logistics	Insulation, energy savings	Low thermal conductivity, significant energy-saving effect
Commercial/Public	Aesthetic, durability	Customizable surface, diverse colors, strong weather resistance
Prefabricated Buildings	Fast construction, flexibility	Lightweight & high strength, standardized design, good compatibility

Service Life and Maintenance

Panels exhibit long service life in modern buildings and cleanroom systems, largely due to their unique material composition and manufacturing process. Typically, the design lifespan can reach several decades, provided proper installation and regular maintenance are performed. Durability is ensured by:

1.Core Stability: The Polyphen core maintains dimensional stability and is resistant to shrinkage or expansion under temperature and humidity fluctuations.

2.Face Layer Protection: The metal face layers are corrosion-resistant and can withstand mechanical impact, extending the overall panel lifespan.

3.Structural Integrity: Advanced bonding technology ensures a tight bond between the core and face layers, preventing delamination over long-term use.

Maintenance Requirements:

Routine Cleaning: Use mild detergents and soft cloths; avoid strong acids, alkalis, or abrasive tools to protect the surface coating.

Regular Inspections: Check joints, seals, and potential gaps periodically to ensure airtightness and integrity.

Protective Measures: Avoid strong impacts or cuts that could damage the panel structure.

Local Repairs: Minor scratches or coating damage can be repaired via touch-up painting or patching to delay corrosion.

Polyphen Sandwich Panels are also recyclable and environmentally friendly. At the end of their service life, materials can be separated and reused, reducing environmental impact.

Energy Efficiency and Environmental Benefits

Sandwich Panels not only emphasize structural and safety performance but also demonstrate significant energy-saving and environmental advantages, making them an important component of modern green buildings.

1. Energy-saving Performance

Excellent Thermal Insulation: Low thermal conductivity of the core effectively blocks heat transfer, reducing HVAC energy consumption.

Airtight Design: Tight bonding with metal face layers improves overall airtightness, further reducing energy loss.

Contribution to Building Efficiency: In cleanrooms, cold storage, and temperature/humidity-controlled environments, the panels enhance operational efficiency and extend equipment life.

2. Environmental Features

Recyclability: At the end of service life, the metal face layers and core can be separated and reused, reducing construction waste.

Low Emission Materials: The panels minimize VOC emissions during production and use, meeting modern environmental standards.

Sustainability: Durability reduces frequent replacement and secondary construction, lowering resource consumption and carbon emissions.

3. Value in Green Buildings

The energy-saving and environmental characteristics of Panels meet the functional and safety requirements of modern construction while aligning with green building certifications and sustainability trends. They help enterprises reduce operational costs and promote environmental goals.

In other words, Panels are not only a high-performance structural material but also a solution driving the construction industry toward energy efficiency and environmental sustainability.

Compatibility with Steel Structures and Modular Buildings

Panels demonstrate strong adaptability in modern building systems, particularly in steel structure and modular construction. Their compatibility with these systems is a key factor driving their widespread use.

1. Compatibility with Steel Structures

Lightweight and High Strength: The relatively low weight of Sandwich Panels effectively reduces the overall load on steel structures, lowering costs for foundations and support systems.

Easy Installation: Panels can be connected to steel frames using bolts, clips, or specialized fasteners, allowing fast construction. This is particularly suitable for large-span and high-rise steel buildings.

Integrated Airtightness: Excellent air tightness combined with steel frameworks further enhances fire resistance, moisture protection, and thermal insulation performance.

2. Compatibility with Modular Buildings

Standardized Design: Panels usually come in uniform sizes and specifications, allowing seamless integration with modular units and supporting rapid assembly.

High Flexibility: Panels can be cut and combined according to different modular designs, accommodating customized building layouts.

Green Assembly: Panels can be prefabricated in factories and quickly installed on-site, significantly shortening construction cycles while reducing dust and noise.

3. Comprehensive Value

Whether in the robust framework of steel structure buildings or the efficient flexibility of modular constructions, Panels leverage their lightweight, energy-saving, and eco-friendly properties. They meet modern building requirements for safety and functionality while offering advantages in construction efficiency, user experience, and sustainability.

Why Choose Yuanda's Polyphen Sandwich Panels

Among the many panel products on the market, selecting the right brand and manufacturer is crucial. Yuanda's Sandwich Panels are widely recognized in the construction industry for the following reasons:

1. R&D and Manufacturing Strength

Yuanda has advanced research laboratories and automated production lines, allowing strict control over core material formulations, steel coatings, and bonding processes. Through a scientific manufacturing workflow, the panels consistently deliver reliable performance in thermal insulation, soundproofing, fire resistance, and weather durability.

2. Reliable Product Performance

High-performance core material: Modified polyphen foam provides thermal insulation, is lightweight, and structurally strong.

Premium steel face layers: Corrosion- and wear-resistant, suitable for various environments including high humidity and low temperatures.

Stable overall structure: The core and steel layers are firmly bonded with high-strength adhesive, preventing delamination or damage during long-term use.

3. Wide Range of Applications

Yuanda's Sandwich Panels can meet diverse construction needs, from cleanrooms, cold storage, and industrial facilities to modular buildings. Standardized dimensions and modular design ensure high efficiency and strong compatibility during installation.

4. Energy-saving and Environmental Advantages

Yuanda products not only provide performance but also align with green building principles. The panels are lightweight, highly insulating, and reduce building energy consumption. Both the core and steel layers are recyclable, supporting sustainable construction practices.

5. Comprehensive Service System

Yuanda offers full-process support, including design consultation, custom production, and installation guidance, ensuring clients achieve performance and experience throughout their projects.