ROHACELL® RIST-HT

Product families

Other characteristics

Brand

ROHACELL

Core Type

Polymethacrylimide (PMI) Foam

Functions

Core Material

Note

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

Core

Polymethacrylimide (PMI) Foam

Technology

Composite Materials

Labeling Claims

Chlorofluorocarbon (CFC)-Free

Material Features

• Good Mechanical Properties
• Good Rigidity
• Good Thermomechanical Properties
• Heat Treated
• Low Resin Uptake
• Machinable

Processing and Production

The optimized cell structure of ROHACELL® RIST-HT makes it particularly suitable for vacuum infusion and RTM processes, where it can be used at temperatures up to 180°C (356°F) with pressures up to 0.7 MPa (102 psi).

Thermoforming and Shaping

ROHACELL® RIST-HT can be easily thermoformed or CNC machined to meet customer requirements.. High precision, pre-shaped and ready-to-use foam cores in complex or simple geometries can also be supplied by the ROHACELL® Shapes Department.

Composite Materials Functions

Core Material

Composites Processing Methods

• Resin Transfer Molding (RTM)
• Thermoforming
• Vacuum Infusion Processing (VIP)

Foam for Vacuum Infusion Processes

ROHACELL® RIST-HT (heat treated) is closed-cell rigid foam based on polymethacrylimide (PMI) chemistry that is completely free of CFC's and specially developed for use as a structural core in connection with vacuum infusion processes. All RIST-HT products are heat treated before delivery to customers.. Its mechanical and thermomechanical properties are similar to those of ROHACELL® WF. Its cell size, however, represents an optimal compromise between low resin uptake – about 50% less than for ROHACELL® WF – and satisfactory bonding of the facings to the core.

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