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PVC Foam Core for Marine/UAV/Wind Energy

Lightweight, high-strength core material for sandwich structures
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What is Structural PVC Foam？

PVC Foam Core is a closed-cell structural foam widely used as a core material in sandwich composite structures.
 
It combines low density with good mechanical performance, providing an efficient balance between weight reduction and structural strength.
 
PVC foam core is compatible with a wide range of resin systems, including polyester, vinyl ester, epoxy, and polyurethane, and is suitable for various composite manufacturing processes.
 
Its closed-cell structure ensures low water absorption and stable performance in demanding environments.

What should I choose for MY application?

application of Marine

 

Marine


Common densities: 80–130 kg/m³.

Based on past cases:
Double-sided shallow-groove perforated sheets may be used for deck areas.
Contour sheets may be used for hull areas.
Engine compartments typically utilise 200/250 density.
 
application of Aerospace

 

Drone/Aerospace


JLONCell offers a range of thin sheets suitable for drones and sports equipment.
The most popular thicknesses are 1-3mm,60–100 kg/m³; custom thicknesses are available upon request.

JLONCell 1mm PVC Foam Core for Aerospace
JLONCell 2mm PVC Foam Core for Aerospace
JLONCell 3mm PVC Foam Core for Aerospace
application of Wind Energy

 

Wind Energy


JLONCell 60kg/m³ is suitable for applications such as wind turbine blades and nacelle covers.

Additionally, we possess CNC machining capabilities for processing composite materials.

The broadest range of PVC Foam Core

Item Standard Unit Result Type 45 50 60 80 100 130 200 250 300
Density ISO 845 kg/m3 Average Value 45 50 60 80 100 130 200 250 300
Density ISO 845 kg/m3 Range 40-50 45-55 54-69 72-90 90-110 120-150 180-220 225-275 270-330
Compressive Strength ISO 844:2006 MPa Average Value 0.68 0.78 1.03 1.5 2.2 3.2 5.5 6.8 8.4
Compressive Strength ISO 844:2006 MPa Minimum Value 0.56 0.69 0.85 1.25 1.8 2.8 4.8 5.8 7.3
Compressive Modulus ISO 844:2006 MPa Average Value 48 63 90.8 119 180 220 300 370 460
Compressive Modulus ISO 844:2006 MPa Minimum Value 36 50 75 103 150 180 270 343 390
Shear Strength ISO 1922:2012 MPa Average Value 0.55 0.7 0.76 1.1 1.5 2.1 2.75 4.19 4.91
Shear Strength ISO 1922:2012 MPa Minimum Value 0.47 0.6 0.7 0.9 1.35 1.9 2.6 3.52 4.32
Shear Modulus ISO 1922:2012 MPa Average Value 16 20 23.1 31.5 40 55 85 98 129
Shear Modulus ISO 1922:2012 MPa Minimum Value 14 16 20 26 33 45 68 86 108
Tensile Strength ASTM   C297 MPa Average Value 0.96 1.36 1.88 2.4 3.5 4.5 5.5 7.68 9.65
Tensile Strength ASTM   C297 MPa Minimum Value 0.83 1.02 1.7 2.1 3 3.5 4.9 6.24 8.87
Tensile Modulus ASTM   C297 MPa Average Value 72 79 96.2 125 180 210 300 342 408
Tensile Modulus ASTM   C297 MPa Minimum Value 63 70 87 105 160 180 250 304 356
 
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Why Choose Rigid PVC Foam？

1. Lightweight, Strong, and Durable
China PVC foam core offers an excellent strength-to-weight ratio with high compressive, shear, and bending strength, along with outstanding fatigue resistance for long-term structural performance.
 
2. Low Water Absorption and Easy Processing
The closed-cell structure resists water ingress and maintains stable properties in humid or marine environments. Compatible with polyester, vinyl ester, and epoxy resins, and suitable for common composite manufacturing processes.

3. Cost-Effective and Widely Proven
China PVC foam provides an optimal balance of performance and cost and has been widely used in marine, wind energy, transportation, construction, and industrial composite applications.This spans from marine, sporting goods, aerospace (drones/UAVs), and high-end robotics.
pvc foam core 60

JLONCell PVC Foam Core Process Technologies

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Representative Products:
Representative Products:

About JLON

Changzhou JLON Composite Co., Ltd. is a leading composite materials supplier in China, specializing in fiberglass, fiberglass cloth, fiberglass fabric, carbon fiber, core materials, and resins.
Serving over 800 global clients across 40+ countries, JLON provides full in-house weaving, customized cutting, and strict quality testing. Its fiberglass cloth and fiberglass fabric are produced with automated looms, ensuring consistent weight, superior strength, and excellent resin compatibility for various composite processes.
With 24/7 production and logistics capability, the company delivers stable quality, competitive pricing, and strong technical support for industries such as marine, wind energy, construction, and transportation.
JLON continues to invest in advanced manufacturing technologies and global partnerships to enhance product performance and efficiency. Its professional technical team works closely with customers to provide tailored composite solutions for every application.
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Not sure which core material fits your project? We help you choose based on: ✔ Application ✔ Budget

PVC Foam Core vs PET Foam Core vs PMI Foam Core

Choosing the right foam core depends on your performance requirements, processing conditions, and budget. If you need a balanced solution for most marine and industrial applications, PVC foam core is a reliable choice. For cost-sensitive and environmentally friendly projects, PET foam core offers a practical alternative. When maximum mechanical performance and high-temperature resistance are critical—such as in aerospace or high-end structures—PMI foam core is the preferred option despite its higher cost.
Item PVC Foam Core  PET Foam Core PMI Foam Core
Mechanical Properties Medium Lower (at same density) Excellent (Best)
Shear Strength Medium Relatively low Excellent
Impact Resistance Good Relatively low Excellent
Temperature Resistance ~ 120 °C ~ 140 °C ≥160 °C
Flame Retardant Properties Naturally flame retardant Requires flame retardant additives Limited (requires modification)
Water Absorption Low Low Higher (hydrophilic)
Environmental Performance Moderate Environmentally friendly, recyclable Moderate
Process Compatibility Hand lay-up, vacuum infusion, RTM Hand lay-up, vacuum infusion, RTM High-temperature processes (RTM, autoclave)
Typical Applications Yachts, boats, wind blades, industrial structures Marine interiors, rail transit, cost-sensitive structures Aerospace, high-performance marine, UAVs
Price Level Medium Lowest Highest (＞2× PVC)

FAQ of JLON PVC Foam Core

  • Q How to choose PVC foam core density for marine applications?

    A 60-80kg/m3: ideal for non-structural or light loaded parts like interiors.
    80-100kg/m3: the most common range for hulls and decks.
    130-200kg/m3: for high load areas such as keel line, engine mountings, and fittings.

  • Q Is PVC foam core suitable for UAV structures?

    A Yes. PVC foam is widely used for non-structure or light-loaded components like fairings or internal liners.
     

  • Q Is PVC foam core suitable for boat hull structures?

    A Yes, PVC foam core is ideal for boat hull. It has lightweight and high strength, excellent water resistance, high impact resistance.

  • Q What is the difference between PVC foam core and PET foam?

    A PVC foam core has higher strength, low water absorption while PET foam core has lower strength and cost. PVC foam core is better for boat hull, decks and bulkheads while PET foam core is more suitable for boat interiors and cost sensitive structures. 

  • Q PVC foam core vs PMI foam: which one is better?

    A PVC foam core is better for processing temperature under 120° C  while PMI foam is recommended for higher temperature between 150-220 ° C.

  • Q Foam core vs honeycomb: which is better for marine applications?

    A Stick with foam cores especially PVC foam core if you ’ re not looking for ultra-lightweight. Foam cores have closed-cell, which are water resistance while honeycomb has high risk of water ingress.

  • Q Can PVC foam core be used in vacuum infusion or RTM?

    A PVC foam core can be used in vacuum infusion and RTM. Hand layup is also suitable.
     

  • Q What thickness of PVC foam core is commonly used in boat decks?

    A Small watercrafts: 10-15mm
    Mid-size yachts: 20-25mm
    Large yachts: 25mm and above
    This is just for reference. Density is also a key factor determining thickness. Higher density provides better strength at the same thickness

  • Q Which core material is better for UAV, PVC or PMI foam?

    A PMI foam is the optimal material for UAV critical structures like fuselage, wings and propeller blades because it has the highest strength and stiffness among all rigid foams.

  • Q Do you have certificate?

    A Yes, we have DNV certificate.

Need support for your composite project?

We assist customers in selecting the appropriate PVC foam core based on their application requirements, including density, thickness, and available machining options. Our products are widely used in marine, wind energy, drones, and industrial composite structures, meeting different needs for lightweight and strength. In addition to standard specifications, JLON LyProCell can provide CNC-machined and thermoformed foam core solutions to help customers find suitable materials that balance performance, cost, and production compatibility.

Consult Your PVC Foam Core Expert

We help you avoid the pitfalls to deliver the quality and value your PVC Foam Core need, on-time and on-budget.
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info@jloncomposite.com
+8619306129712
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