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Sandwich Panels, Aluminum and Thermoplastics honeycombs and Foams
PMI (polymethacrylimide) RS foam is specially developed for use as a structural core in connection with vacuum infusion processes. It is applied in components of aviation, aerospace, sports equipment with resininjection process to reduce the weight.
PMI core makes it possible to produce sandwich components in a single step (co-curing), resulting in reduced overall production time.
It is highly suitable with autoclave technologies and vacuum infusion processes, including RTM (Resin Transfer Moulding) and VARTM (Vacuum Assisted Resin transfer moulding) processes. Its cell size is small, achieves an optimal compromise between low resin absorption and satisfactory bonding of the facings to the core.
Processing and production
PMI is especially suitable for vacuum infusion and RTM processes due to its optimized cell structure, where it can be used at temperature up to 180°C with pressure up to 0.7 MPa after heat treatment.
Thermoforming and shaping
PMI can be easily thermoformed or CNC machined to meet customers’ requirements, bringing tremendous manufacturing advantages. High precision, pre-shaped and ready-to-use foam cores in complex or simple geometries can also be supplied by the Machining Department.
MECHANICAL PERFORMANCE
| Type | Test Method |
Units | PMI 24 | PMI 30 | PMI 50 | PMI 75 | PMI 110 | PMI 200 |
Density |
ISO845 |
kg/m³ |
24±3 |
30±3 |
30±3 | 75±7 | 110±10 | 200±15 |
Compressive
|
ISO844 |
MPa |
0.25 |
0.40 |
0.85 | 1.70 | 3.60 | 9.50 |
| Tensile Strength |
ASTM D638 |
MPa | 0.6 | 0.80 | 1.68 | 2.30 | 3.70 | 7.00 |
Elastic
|
ASTM
|
MPa |
25 |
38 |
83 | 108 | 197 | 380 |
Elongation
|
ASTM
|
% |
2.8 |
2.4 |
2.6 | 2.8 | 2.8 | 3.0 |
Flexural
|
ASTM
|
MPa |
0.4 |
0.80 |
1.60 | 2.90 | 5.20 | 13.0 |
Shear
|
ASTM
|
MPa |
0.3 |
0.40 |
0.85 | 1.25 | 2.38 | 5.00 |
Shear Modulus |
ASTM
|
MPa |
12 |
15 |
30 | 48 | 80 | 160 |
Compressive
|
GB/T
|
% |
>=2.0 |
/ | ||||
Temperature
|
DIN
|
°C |
>=200 |
|||||
Compressive creep testing conditions:
PMI 24 130 °C/0.1MPa/2h
PMI 30 130 °C/0.1MPa/2h
PMI 50 130 °C/0.3MPa/2h
PMI 75 150 °C/0.3MPa/2h
PMI 110 180 °C/0.3MPa/2h
Note: Technical data of our products are typical values for the nominal density.
PRODUCT SPECIFICATION
| PMI | Size (mm) | Standard Thickness Range (mm) | Thickness Tolerance (mm) |
24 |
2500x1250 |
1-60 |
±0.2 |
30 |
2500x1250 |
1-60 |
±0.2 |
| 50 | 2500x1250 | 1-120 | ±0.2 |
75 |
2500x1250 |
1-100 |
±0.2 |
110 |
2160x1100 |
1-90 |
±0.2 |
Note: 1-4mm thick sheet is supplied in 1/4 or 1/2 sheet size.
All heat-treated sheets supplied in sealed aluminum packaging.
LIABILITY DISCLAIMER: The above data are to the best of our knowledge correct and are intended to give information about our products and their potential applications. No warranty is given or implied in respect of certain properties of the products or their suitability for a particular application. We reserve the right for technical changes without further notice. We guarantee impeccable product quality under our terms of sale.