ROHACELL® SL

Identification & Functionality

Core Type

Polymethacrylimide (PMI) Foam

Composite Materials Functions

Core Material

Technologies

Composite Materials

Product Families

Composite Materials — Core Materials

Foam Cores

Features & Benefits

Materials Features

Excellent Mechanical Strength,

Good Tenacity,

High Temperature Resistance,

Shorter Cycle Time

Product Attributes

The trend continues toward designing lightweight, better performing products. The manufacturing process to create innovative new products and their components must be cost efficient and reliable. In many cases, the demanding requirements call for fiber-reinforced plastic (FRP) sandwich construction to deliver the ideal solution. Whether the goal is excellent bending stiffness & strength, stabilization of very thin FRP sheets against external forces, or generating complex 3-D geometries with minimized effort - a ROHACELL® sandwich can be the answer.

Strength and Durability

• ROHACELL® SL foam cores boast outstanding mechanical strength, especially under tensile load, and a high tenacity. These attributes make it a great choice for applications with substantial dynamic mechanical loads.

ROHACELL® Helps You Save Weight

• The fine cell size minimizes surface resin absorption while maintaining a strong connection to the face sheet. At the same time, the closed cell structure keeps the resin where you want it – in the interface.

Fast and Efficient Processing

• Excellent temperature stability facilitates processing up to 180 °C (356 °F) for ROHACELL® SL, with all common processes like vacuum infusion and resin transfer molding, pre-preg autoclaving, hand lay-up, and compression molding. High curing temperatures allow for reduced cycle times and excellent laminate properties. ROHACELL® SL is easy to shape by routing or thermoforming.

Applications & Uses

Composites Processing Methods

Compression Molding,

Hand Lay-up,

Out of Autoclave Prepreg,

Resin Transfer Molding (RTM),

Thermoforming,

Vacuum Infusion Processing (VIP)

Properties

Typical Properties

	Value	Units	Test Method / Conditions
Density	60 - 240	kg/m³	ISO 845
Compressive Strength	1.5 - 9.6	MPa	ISO 844
Compressive Modulus	76 - 370	MPa	ISO 844
Tensile Strength	3.7 - 10.4	MPa	ISO 527-2
Tensile Modulus	120 - 371	MPa	ISO 527-2
Elongation (at Break)	4.0 - 6.3	%	ISO 527-2
Shear Strength	1.4 - 4.8	MPa	DIN 53294
Shear Modulus	33 - 123	MPa	DIN 53294
Maximum Shear Strain	7.8	%	DIN 53294
Coefficient of Thermal Expansion	3.85	1/K*10E-5	—
Standard Sheet Thickness*	1 - 115	mm	—

Note

* Thickness tolerance +/- 0.2 mm, other tolerances available on request. 1-4 mm thick sheets supplied in ¼ or ½ sheet size.