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Ultralow-sheet-resistance metal aluminum film

A metallized aluminum, ultra-low-side technology, applied in the field of capacitors, can solve problems such as the inability to guarantee the reliability of capacitors, and achieve the effect of stable performance

Inactive Publication Date: 2013-05-01
TONGLING DONGSHI ELECTRONICS
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Problems solved by technology

Under the general atmospheric conditions on the ground, there will be no problem with the use of this metallized aluminum film, but in extreme environments such as space, where the temperature changes rapidly, high temperature, strong vibration and overweight, high radiation environment, weightlessness and microgravity, etc., cannot guarantee the reliability of capacitors made from

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Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0020] Such as figure 1 As shown, an ultra-low square resistance metallized aluminum film is composed of a base film 1 and a metallized aluminum film layer 2. The square resistance of the metallized aluminum film layer 2 is 0.25~0.65Ω / □, while the conventional metallized aluminum film The square resistance of the layer is 2~4Ω / □, that is, the thickness of the metallized aluminum film layer 2 is about 7 times that of the conventional metallized aluminum film, and the metallized aluminum film layer 2 is greatly thickened, which means that the vacuum evaporation metallization In the case of aluminum film, more aluminum should be deposited on the base film in the same time.

[0021] The base film 1 is an organic film, which can be selected as a pol...

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Abstract

The invention provides an ultralow-sheet-resistance metal aluminum film and relates to the technical field of capacitors. The ultralow-sheet-resistance metal aluminum film consists of a base film and a metal aluminum film layer. The sheet resistance of the metal aluminum film layer is 0.25-0.65 ohms per unit square. However, the sheet resistance of a conventional metal aluminum film layer is 2-4 ohms per unit square. In other words, the thickness of the metal aluminum film layer is approximate seven times of the thickness of the conventional metal aluminum film layer, the thickness of the metal aluminum film layer is greatly increased and more aluminum is deposited on the base film within the same time during vacuum evaporation of the metal aluminum film. The ultralow-sheet-resistance metal aluminum film provided by the invention has stable performance, is not deteriorated during long-term storage, can resist large-current impact, can be used in extreme environments such as outer spaces, and can endure conditions of severely changing temperature, high temperature, strong vibration, overweight, high radiation, zero gravity, microgravity and the like.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to an ultra-low square resistance metallized aluminum film. Background technique [0002] Metallized aluminum film is the plastic film formed by melting, evaporating, and depositing high-purity aluminum on the base film in a high vacuum state to form an extremely thin metal layer on the surface of the base film. The resistance value of the metal layer on the metallized film in the unit square area is called the sheet resistance, expressed in Ω / □, because the thickness of the metallized layer on the metallized film is very small and difficult to measure, the sheet resistance is usually used to represent the metal coating. thickness. The thickness of the metallization layer is inversely proportional to the square resistance, that is, the lower the square resistance, the greater the thickness of the metallization layer. At present, the square resistance of conventional metallized ...

Claims

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Application Information

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IPC IPC(8): H01G4/005H01G4/14
Inventor 汤泽波罗健
Owner TONGLING DONGSHI ELECTRONICS
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