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CORE
MATERIALS
Core materials
are used to increase the strength of a product, and reduce its
weight.
Honeycomb
Characteristics
: resistance to impact and distortion, resistance to water, corrosion
and chemical products, lightness compared to a monolithic product
of same strength, thermic and sound insulation,
high stiffness, durability.
The implementation
of honeycomb needs vaccum process, after the laminating of external
skins.
| Aluminium
|
| Characteristics |
Energy
absorption, best weight to resistance ratio, thermal
conductivity, electrical protection, machinable
- 5052, 5056 or ACG type
- hexagonal or over-expanded cells
- density : from 16 to 200 kg/m3
- thickness : from 3 to 150 mm |
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| Aramid
/ phenolic |
| Characteristics |
Good
fire resistance, low dielectric properties
- aeronautic or industrial type
- hexagonal, over-expanded or flexcoreÒ cell
- density : from 24 to 144 kg/m3
- thickness : 3 mm minimum |
| Glass/
phenolic |
| Characteristics |
Low
dielectric properties |
|
PVC foams |
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| Characteristics |
-
cross linked or non-cross linked
- density : from 55 to 200 kg/m3
- smooth or squared
- thickness : from 3 to 50 mm |
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| Sandwich
panels |
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| They
are a combination between aluminium honeycomb or aramid
honeycomb, re-covered by alumium skin, or laminated with
glass, carbon, epoxy or phenolic. This skin is used as a
support for laminating or bonding. |
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Monolithic
sheets
Stratification
of glass or carbon, with epoxy, phenolic or polyester matrix.
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