確かにアルミホイル自体は絶縁体ではありません, アルミホイルは電気を通すので.
アルミ箔は絶縁特性が比較的低い. アルミ箔にはある程度の絶縁性がある場合もありますが、, 断熱特性は他の断熱材ほど良くありません. なぜなら、通常の状況では, the surface of aluminum foil is susceptible to oxidation or corrosion, forming conductive oxides or corrosion products, thereby reducing its insulation performance.
There is a close relationship between the conductivity and purity of アルミホイル. 一般的に言えば, the higher the purity of the aluminum foil, the better its electrical conductivity and the higher its conductivity. したがって, in practical applications, aluminum foil is usually not used as an insulating material, but is more often used to make conductive parts or as a conductive material.
Aluminum foil is conductive. The conductivity of aluminum foil depends on its manufacturing process and purity. 一般的に言えば, the higher the purity of the aluminum foil, the better the electrical conductivity and the higher the conductivity. Under standard temperature and pressure, the conductivity of aluminum foil is usually between 35-50MS/m.
実際には, aluminum is known for its excellent thermal conductivity because it conducts heat so well. しかし, when used as a radiant barrier or reflective insulation, aluminum foil can effectively reduce heat transfer by reflecting radiant heat. If aluminum foil is placed with the light side facing out in an area where heat is to be reflected, such as behind a radiator or a window, it can help reflect radiant heat back into the room, potentially improving energy efficiency.
Although aluminum foil is not a good insulator in the traditional sense, it serves a very important purpose in other ways.
