XPS Foam Core for Composite Sandwich Panels

XPS Foam Core

Extruded Polystyrene (XPS) Foam Core features a closed-cell structure formed through extrusion, creating uniform cellular composition with dimensional stability across wide temperature ranges. The closed-cell construction prevents water intrusion, maintaining performance in humid conditions while providing notable compressive strength and reliable thermal resistance for energy-efficient building envelopes.

The core combines extruded polystyrene polymer with catalyst during production, achieving closed-cell rates exceeding 99 percent. This dense foam demonstrates low thermal conductivity and inherent moisture resistance. Available densities offer corresponding compressive strengths to meet structural demands, with low water absorption rates and consistent R-values tested to American Society for Testing and Materials (ASTM) standards.

Applications span composite sandwich panels for construction, transportation, and cold storage industries. Common uses include wall and roof insulation, underfloor heating systems, foundation treatments, recreational vehicle bodies, refrigerated truck liners, and cold room walls where thermal properties and moisture resistance prove critical.

Processing compatibility extends to conventional fabrication methods, on-site cutting with hand tools, and Computer Numerical Control (CNC) routing. The foam bonds effectively with fiberglass, aluminum sheets, plywood, and steel through vacuum compression molding. Compared to Expanded Polystyrene (EPS), this extruded core delivers higher compressive strength and lower water absorption for stable long-term thermal performance.

RaxPanel: Leading XPS Foam Board Manufacturer

RaxPanel specializes in high-performance XPS Foam Board technology, offering innovative composite panel solutions for diverse industrial applications. As one of only three global manufacturers with this advanced capability, we are the sole Asian producer of these premium materials.

Our XPS Foam Boards deliver exceptional thermal efficiency with conductivity as low as 0.03 W/(m·K) and compressive strength up to 6.2 MPa. They provide superior moisture resistance, structural integrity, and fire safety compliance, making them ideal for:

Construction
Cold chain logistics
Marine applications
Transportation

With over 20 years of experience and a daily output exceeding 1500 m² from our Hebei-based facilities, we combine global expertise with localized production advantages. Our unwavering commitment to customer satisfaction drives us to continually exceed expectations through rigorous quality assurance and tailored solutions.

Choose RaxPanel as your trusted partner for XPS foam boards and experience the difference in meeting your requirements and solving your challenges effectively.

Data Sheet
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Parameter	Value	Test Method
General Properties
Material Type	Extruded Polystyrene (XPS)	–
Cell Structure	Closed-cell	–
Closed Cell Rate	≥ 99%	–
Mechanical Properties
Compressive Strength	100 – 1200 kPa (varies by density)	ASTM D1621
Flexural Strength	≥ 55 psi	ASTM C203
Flexural Modulus	≥ 1600 psi	ASTM C203
Tensile Strength	≥ 65 psi (vertical)	ASTM D1623
Shear Strength	≥ 35 psi	ASTM C273
Shear Modulus	≥ 400 psi	ASTM C273
Thermal Properties
Thermal Conductivity (λ)	0.024 – 0.034 W/m·K	ASTM C518
Thermal Resistance (R-value per inch)	5.0 ft²·h·°F/Btu (min)	ASTM C518
Operating Temperature	-50 °C to +75 °C	–
Coefficient of Linear Thermal Expansion	3.5 x 10⁻⁵ in/in·°F	ASTM D696
Moisture & Durability
Water Absorption	≤ 0.1% by volume (max)	ASTM C272
Water Vapor Permeance (1 inch)	≤ 1.5 perms (max)	ASTM E96
Dimensional Stability	≤ 2.0% change (max)	ASTM D2126
Physical Properties
Density	30 – 55 kg/m³	–
Fire Performance
Flame Spread	≤ 25	UL 723
Smoke Developed	≤ 450	UL 723

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XPS Foam Core

Frequently Asked Questions

What are the key benefits of using RaxPanel XPS Foam Core?

RaxPanel XPS Foam Core offers excellent thermal insulation, high resistance to moisture, exceptional compressive strength, and long-term durability. Its closed-cell structure ensures it does not absorb resin fully, saving both time and material during production.

Is RaxPanel XPS Foam Core moisture-resistant?

Yes, RaxPanel XPS Foam Core is highly moisture-resistant due to its closed-cell structure, which significantly reduces water absorption and prevents issues like mold, mildew, and structural degradation.

What applications is RaxPanel XPS Foam Core suitable for?

RaxPanel XPS Foam Core is ideal for use in construction (walls, roofs, floors), cold storage facilities, refrigerated transportation, industrial panels, and composite sandwich structures requiring lightweight, high-strength insulation.

How does RaxPanel XPS Foam Core improve energy efficiency?

RaxPanel XPS Foam Core provides superior thermal resistance, reducing heat transfer and helping maintain consistent indoor temperatures. This results in lower energy consumption for heating and cooling.

Can RaxPanel XPS Foam Core be customized for specific projects?

Yes, RaxPanel XPS Foam Core can be customized in terms of thickness, density, dimensions, and surface treatments to meet specific project requirements, including specialized applications in construction and transportation.

What is the compressive strength of RaxPanel XPS Foam Core?

RaxPanel XPS Foam Core offers high compressive strength, typically ranging from 30 psi to over 60 psi depending on density, making it suitable for load-bearing applications.

Is RaxPanel XPS Foam Core environmentally friendly?

RaxPanel XPS Foam Core is designed with sustainability in mind, featuring low global warming potential (GWP), recyclable materials where applicable, and compliance with environmental standards for reduced carbon footprint.

What measures are in place to guarantee consistent quality and timely delivery for bulk purchases?

Our manufacturing process adheres to strict quality control measures, including ISO 9001 standards, ensuring high compressive strength, moisture resistance, and dimensional stability in every batch. With a daily output of over 1500 m² and over 20 years of experience, we prioritize reliable supply chains and efficient production to meet large-volume orders without delays. We offer customization in sizes and specifications to fit specific project needs, backed by a global distribution network serving clients in 30+ countries.

Are there resources available to assist with product promotion and customer education?

Yes, we provide comprehensive support including detailed technical data sheets, material samples, and marketing materials like brochures to help partners effectively promote and educate customers. Our products are designed with versatility for various applications, and we ensure easy access to information on thermal performance, durability, and customization options to enhance sales efforts and market understanding.

How can I ensure that the panels are easy to install and meet project deadlines?

Our panels are lightweight and designed for straightforward processing with common tools, reducing installation time and labor costs. We supply clear technical guides and ensure on-time delivery through efficient logistics, supported by our high production capacity. The closed-cell structure and uniform quality minimize issues during application, helping projects stay on schedule without compromising on performance or safety standards.