ROHACELL® A
ROHACELL® A is a closed-cell rigid foam crafted from polymethacrylimide (PMI) chemistry. Notably, it is entirely devoid of CFCs, aligning with environmental considerations. Engineered with precision, ROHACELL® A foam is tailored to meet the rigorous standards of the aerospace industry. It offers versatility in aerospace applications, supporting both prepreg processing and vacuum infusion across various pressure and temperature ranges.
Product families
Applications
- Aerospace & Aviation
Product Families
- Foam Cores
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.
- Markets
- Automotive & Transportation
- Core
- Polymethacrylimide (PMI) Foam
- Technology
- Composite Materials
- Weight Savings
When building composite sandwich components, lightweight ROHACELL® A has a closed cell structure that ensures the resin stays exactly where you want it – in the interface. This eliminates excess and unnecessary resin that adds undesirable weight to the finished part.
- Labeling Claims
- Chlorofluorocarbon (CFC)-Free
- Composites End Use
- Aerospace Applications
- Material Features
- Light Weight
- Machinable
- Processing and Production
ROHACELL® A foam is suitable for both prepreg processing and vacuum infusion at temperatures up to 130 °C (266 °F) and pressures up to 0.3 MPa (45 psi).; Curing method options include autoclave, vacuum bagged, RTM, VARTM and press.; Using a ROHACELL® core makes it possible to produce sandwich components in a single step (co-curing), resulting in reduced overall production time.
- Thermoforming and Shaping
ROHACELL® A 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
- Compression Molding
- Out of Autoclave Prepreg
- Prepreg Processing
- Resin Transfer Molding (RTM)
- Thermoforming
- Vacuum Assisted Resin Transfer Molding (VARTM)
- Vacuum Bagging
- Vacuum Infusion Processing (VIP)
- Structural Foam for Aircraft Application
ROHACELL® A is closed-cell rigid foam based on polymethacrylimide (PMI) chemistry that is completely free of CFC's and engineered to meet the demanding requirements of the aerospace industry.. Stringent quality control supported by extensive testing documentation of ROHACELL® A has led to specification by major aircraft manufacturers for more than 40 years, including MIL, CMS and others.
Technical data
Table 1 of 2
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density | 32 - 75 | kg/m³ | ISO 845 |
| Compressive Strength | 0.4 - 1.5 | MPa | ISO 844 |
| Tensile Strength | 1 - 2.8 | MPa | ISO 527-2 |
| Tensile Modulus | 36 - 92 | MPa | ISO 527-2 |
| Elongation (at Break) | 3.0 | % | ISO 527-2 |
| Shear Strength | 0.4 - 1.3 | MPa | DIN 53294 |
| Shear Modulus | 13 - 29 | MPa | DIN 53294 |
| Coefficient of Thermal Expansion | 3.52 - 3.70 | 1/K × 10⁻⁵ | — |
| Standard Sheet Thickness (2500 X 1250 mm)* | 1 - 138 | mm | — |
Table 2 of 2
8 rows| Characteristic | Value |
|---|---|
| Ɛ’ (f = 2.5 Ghz) | 1.05 - 1.08 |
| tan δ (f = 2.5 Ghz) | 0.0003 |
| Ɛ’ (f = 5 Ghz) | 1.06 - 1.1 |
| tan δ (f = 5 Ghz) | 0.0006 - 0.0011 |
| Ɛ’ (f = 10 Ghz) | 1.05 - 1.12 |
| tan δ (f = 10 Ghz) | 0.0017 - 0.0046 |
| Ɛ’ (f = 26.5 Ghz) | 1.05 - 1.08 |
| tan δ (f = 26.5 Ghz) | 0.0034 - 0.0044 |
