Aluminium Composite Panels | Aluminium Suppliers Malaysia
Comprising a soft core sandwiched between two layers of aluminium, aluminium composite panel manufacturers produce these specialized materials for use in packaging, car body paneling and building construction.
Due to its strong weather resistant properties, aluminium composite panels are used widely in construction, primarily for external cladding, roof edges and signage.
Although not expected to be waterproof, aluminium composite panels are used as element controls designed to divert rain water or wind away and also to prevent it from entering the structure.
The ability to colour aluminium composite panels with a coating of polyvinylidene fluoride (PVDF), fluropolymer resins or polyester lends itself well to decorative purposes, which are expected to last about 20 years.
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Aside from the characteristics and advantages listed in the section above (common cores used in aluminium composite panels) aluminium composite panels are also easy to work and reduces fabrication time and costs.
For safety reasons, flammable cores like polyethylene are sometimes banned for building construction. Instead, mineral cores are used instead.
How Are Aluminium Composite Panels Made?
Sandwich-panels are a composite material that combine the properties of different materials; often of a more rigid, harder metal layer and a softer core. Sandwiching the core material between two metal sheets results in a rigid, lightweight and heat/sound insulating material – and in the case of aluminium composite panels a polyethylene core sandwiched between aluminium sheet metal.
Aluminium composite panels are used when there is a need for high structural rigidity (stiffness) and low-weight. For this reason they often find themselves in aerospace and aircraft applications, with polyethersufone polyvinylchloride, polyurethane, polyethylene or polystyrene, balsa wood, syntactic foams and honeycombs often used as core materials. Car manufacturers use aluminium composite panels for the same reason.
The most successful is the honeycomb structure; a hexagonal structure much like the honeycombs of bees which it draws its inspiration. Its effectiveness is the reason that aluminium composite panel manufacturers extensively use honeycomb structures in aerospace.
Honeycomb structures minimize weight and material while at the same time maximize its specific strength, which is the amount of force a material can take below it collapse divided by its density.
Properties of materials of aluminium composite panels.
Low-density Polyethylene, better known as common plastic, is a relatively soft material that is inexpensive to produce and exhibits shock absorbing and heat insulating characteristics. With a Mohs hardness of less than 2 (in between Talc and Gypsum), the material needs to be protected from damage.
Aluminium has a Mohs hardness of 2.29. This is not only harder and more rigid than plastic but aluminium forms a natural oxidized layer that resists corrosion to acids and alkalis. This protects it and the polyethylene core from fluctuating weather effects like moisture, temperature fluctuations, and chemicals. Polyethylene’s elasticity complements aluminium’s rigidity as a shock absorber to prevent bending or breaking.
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