Core Structure & Manufacturing Process
- Production begins with the pre-mixing of high-quality polystyrene granules and specialized graphite-modified masterbatch. The mixture is plasticized under high temperature and pressure, infused with a blowing agent (typically environmentally friendly CO₂ or blends), and then extruded through a precision die. During extrusion, the material expands instantaneously and cools rapidly, forming boards with uniform graphite distribution and a high-strength skin layer. We offer various edge profiles (e.g., plain, shiplap, tongue & groove) to suit different installation requirements.
Key Performance Parameters:
Thermal Conductivity (Lambda λ): Exceptionally low, typically in the range of 0.028 – 0.033 W/(m·K). This translates to roughly 20-30% higher insulation efficiency compared to standard white XPS boards.
Compressive Strength: Exceptionally high, ranging from 150 kPa (approx. 15 tons/m²) to over 700 kPa (approx. 70 tons/m²), making it suitable for various load-bearing applications from roofs to parking garages and airport runways.
Water Absorption: Extremely low, typically < 1.0% by volume. It maintains nearly unchanged thermal performance and structural integrity even after long-term water immersion.
Fire Performance: Depending on formulation and standards, can achieve ratings such as B1 (Chinese GB) or Euroclass B/C/E (European EN), complying with stringent building fire codes.
Dimensional Stability: Excellent, with minimal deformation under varying temperature and humidity conditions.
Environmental Profile: Free of HCFCs, utilizing eco-friendly blowing agents. Its superior energy-saving performance significantly reduces operational carbon emissions of buildings.
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Key Advantages
Superior Thermal Insulation Efficiency
This is its most prominent advantage. A lower lambda value means thinner boards can be used to achieve the same thermal resistance (R-value) or U-value. This provides greater flexibility in architectural design, proving particularly valuable in renovation projects with space constraints or where maximizing interior floor area is a priority.
Outstanding Moisture & Vapor Resistance
The closed-cell structure virtually blocks the penetration of both liquid water and water vapor. Even in damp soil, foundations, or facades frequently exposed to rain, it remains dry and performs efficiently over the long term, completely avoiding insulation failure due to moisture absorption.
Exceptional Compressive Strength & Durability
It can withstand significant long-term static and dynamic loads without creeping or collapsing. Its durability ensures the insulation system performs consistently throughout the building's lifespan with minimal maintenance cost.
Lightweight & Ease of Installation
Despite its high strength, it is lightweight, easy to cut, transport, and install. Combined with various edge profiles, installation is fast, and joints are tight, effectively reducing thermal bridges.
Excellent Long-Term Performance Stability
Resistant to corrosion, mold, and aging. Its thermal and physical properties remain stable within a temperature range of -50°C to 75°C and over extended use, matching the service life of the building structure itself.
High Comprehensive Economic Benefit
While the initial investment may be slightly higher than traditional insulation, its superior performance delivers savings on multiple levels: reduced material thickness, lower energy bills, saved space, and decreased long-term maintenance costs. The Life Cycle Cost (LCC) is significantly lower, and the Return on Investment (ROI) is high.
Application Range
Building Envelope
Inverted / Traditional Roofs: The ideal insulation layer, especially for inverted roof systems due to its ability to maintain performance despite long-term exposure to damp conditions.
External Wall Insulation Systems: Serves as the insulation core in External Thermal Insulation Composite Systems (ETICS) or curtain wall systems, providing high efficiency and protecting the structural wall.
Cold Storage & Refrigeration Facilities: Used in walls, roofs, and floors to ensure stable low-temperature environments, preventing energy loss and condensation.
Internal Walls & Ceilings: Improves indoor thermal comfort and reduces sound transmission.
Floor & Foundation
Floor Insulation (Slab-on-Ground): Installed beneath the ground floor of buildings to prevent cold from the ground and improve floor comfort.
Perimeter Foundation Insulation: Installed vertically or horizontally around building foundations to prevent frost heave damage to the structure and reduce basement heat loss.
Frost Heave Protection Layer: Used in railway and road subgrades to prevent deformation caused by freeze-thaw cycles in permafrost regions.
Special & High-Load Applications
Insulation under Parking Garages, Plazas, Airport Runways: Its extremely high compressive strength can withstand heavy loads from vehicles, aircraft, etc., while providing insulation to the underlying soil or structure.
Green Roofs (Vegetated Roofs): Acts as an insulation layer beneath protection/drainage boards, enduring the long-term load and damp environment from soil and vegetation.
Pipe Insulation, Cold Chain Logistics Flooring.
Industrial & Commercial Applications
Refrigerated Containers, Prefabricated Houses, Clean Rooms, and other fields with stringent requirements for insulation, moisture resistance, and lightweight properties.
Graphite Polystyrene Extruded Board (GPS/XPS) sets the benchmark for modern high-performance building insulation. It ingeniously combines advanced nanomaterial technology with proven extrusion processes, successfully addressing the multiple challenges of thermal insulation, moisture resistance, load-bearing capacity, and durability. Choosing GPS/XPS is not merely selecting a product; it is opting for a reliable solution committed to enhancing building energy efficiency, ensuring long-term structural health, reducing operational costs, and contributing to sustainable development.
We are committed to providing GPS/XPS boards in various specifications and performance grades, and can offer technical support and customized solutions based on your specific project requirements.
