Folia de aluminiu este un bun izolator termic deoarece este un slab conductor de căldură. Căldura poate fi transferată printr-un material numai prin conducție, convecție, sau radiații. În cazul foliei de aluminiu, transferul de căldură are loc în primul rând prin radiație, care este emisia de unde electromagnetice de pe suprafața unui obiect.
Folia de aluminiu este strălucitoare, reflective material that reflects radiant heat back towards its source. This means that if you wrap an object in aluminum foil, it will reflect the heat from the object back towards the object, rather than allowing it to escape into the surrounding environment. This can help to keep the object warm or cool, depending on its temperature and the surrounding conditions.
Additionally, aluminum foil is a thin material, which means that it does not have much mass to absorb and transfer heat. This makes it less effective as a conductor of heat, and therefore a better insulator.
Overall, aluminum foil’s combination of reflectivity and low thermal mass make it an effective heat insulator.
