| 摘要 |
The invention relates to a construction sandwich panel, the production method thereof and a ventilated architectural façade. The inventive panel comprises: two external sheets (1-1') which are essentially made from aluminium, said aluminium taking the form of an alloy with manganese, silicon and/or magnesium; and an internal core (2) which is based on aluminium foam containing titanium hydride as an expansion agent, in which the aluminium can also be alloyed with silicon or magnesium. According to the invention, the external sheets have a reduced thickness of the order of between 0.5 and 0.7 mm, while the core has a much larger thickness of between 6 and 9 mm, with average densities in the range of 0.25 and 0.5 gr/cm<SUP>3</SUP>. In addition, the external sheets (1-1') are joined to the foam core (2) using a metallurgical connection formed by means of a thermal process. In this way, the panel produced is light, strong, flameproof, fire resistant, stable at high temperatures, insulating, durable and fully recyclable. The invention also relates to a method of producing the sandwich panel, and to a ventilated architectural façade in which said sandwich panel is used as an external enclosure system which, together with the structure of the building, defines the ventilation chamber of the façade.
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