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PTC composition and over-current protection device containing the same
PTC composition and over-current protection device containing the same
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机译:PTC组合物和包含该PTC组合物的过电流保护装置
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摘要
A PTC composition comprises crystalline polymer and conductive filler. The conductive filler comprises tungsten carbide powder dispersed in the crystalline polymer, and the tungsten carbide powder comprises impurity of less than 7% by weight. The impurity comprises the materials other than tungsten monocarbide.
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