PTC (positive temperature coefficient) ring production method
A ring, metal foil technology, applied in the direction of current-responsive resistors, resistors with positive temperature coefficient, etc., can solve the problems of unsuitability for mass production and low production efficiency
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[0024] A kind of preparation method of circular PTC, circular PTC such as figure 1 As shown, the outer dimension is composed of outer diameter D, inner diameter d and thickness of a ring piece, including two metal foils and a PTC material layer, wherein: the rough surface of the two metal foils is in direct physical contact with the PTC material layer, The PTC material layer is interposed between the two metal foils. The upper and lower metal foils and the upper and lower metal nickel sheets are assembled into a battery cap to form a component, and connected to a power supply to form a conductive circuit. The preparation steps are in sequence for:
[0025] First, the ring PTC is a polymer-based PTC, and each component is weighed according to the formula. If there is a granular material in the raw material, it should be ground into a powder with a particle size of less than 0.1 mm before weighing; The material is pre-mixed physically with a mixer for 15-40 minutes; the mixed ...
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