K971 Water Foil Structural Epoxy Foam Core

The K971 is an important structural epoxy foam core for making carbon fiber or glass fiber products, like water foil, car spoilers, etc. It can expand in the mold by heating, and solidify after cooling. With a process like that, the K971 can be shaped with high precision, this is the advantage of the epoxy expanding foam, and the carving process is unnecessary.

 

K971 Structural Epoxy Foam Core

  • Item: K971
  • Foaming Ratio: High ratio core
  • Density Type: Low
  • Practical Foaming Ratio: 52.5Times
  • Theoretical Foaming Ratio: 15.5Times
  • Initial Density: 1.03 g/cm 3
  • Foaming Density: 0.06-0.09g/cm 3
  • Hardness: Shore C: 70-80
  • Main Applications: Water foil and car spoiler
  • Combined with: Carbon fiber/fiberglass, and epoxy resin.

Description

The K971 is a revolutionary low-density structural epoxy foam core that delivers unmatched performance. Its unique properties, including high expansion ratios, excellent thermal stability, and resistance to secondary expansion, make it an ideal choice for engineers seeking to reduce weight and enhance the performance of their composite products. Whether for automotive, aerospace, or marine applications, K971 offers a lightweight, durable, and customizable solution for composite product manufacturers.

K971 Foam Core Features

  • Low density: Under 0.1g/cm 3  density emphasizes the lightweight nature of the material.
  • High expansion ratio: More than 50 times highlights the significant volume increase during the foaming process.
  • Thermal stability: Indicates the material’s ability to withstand high temperatures.

K971 Structural Epoxy Foam Core Technical

Base Weight 500±20g/m² (liner not included)
Sheet Size 1000mm*450mm
Initial Density 0.35-0.45g/cm³
Molding Temperature 1.03±0.12g/cm³
Foaming Temperature 130℃-160℃ (Recommended: 145℃)
Free Rise Expansion Ratio 45-60 times @ 1atm, 150℃, 20min
Working Expansion Ratio/Density 10-20 times, 0.07-0.10g/cm³
Foam Hardness Shore C: 70-80 @ ρ=0.09g/cm³, 150℃, 40min
Heat Resistance 90℃2h baking, deformation < 1.0% @ ρ=0.09g/cm³, 150℃, 40min
Room Temperature Mechanical Properties GB/T8813-2020 Compressive Strength/MPa 0.53
Compressive Modulus/MPa 6.86
GB/T 8812.2-2007 Flexural Strength/MPa 1.77
Flexural Modulus/MPa 76.8
GB9641-88 Tensile Strength/MPa 0.85
Tensile Modulus/MPa 6.2
Elongation at Break/% 16.5
GB/T1455-2005 Shear Strength/MPa 0.5
Shear Modulus/MPa 2.53

Foam Kitting

As a professional core material manufacturer, we also can provide the kitting service for you.

We equipped 3-axis and 5-axis CNC machines to carve the foam into the shape you need or use the heat expansion molding to custom the shape;

Meanwhile, we also can produce the finished composite product, OEM service is available. Welcome to contact us for more details.

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