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Positive temperature coefficient over-current protection device and preparation method

An overcurrent protection device, positive temperature coefficient technology, applied in resistors with positive temperature coefficient, resistors with current response, resistors, etc., can solve the problem of increased device resistance, no high withstand voltage capability, and high cost problem, to achieve the effect of low room temperature resistance value

Active Publication Date: 2011-09-21
SHANGHAI KETER POLYMER MATERIAL
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  • Claims
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Problems solved by technology

[0008] The present invention is to solve the above-mentioned problems, overcome the problem that the conductive composite material of the existing circuit protection device increases the amount of carbon black, has low resistivity and does not have high withstand voltage; adding metal hydroxide in the conductive composite material has a higher voltage resistance, but it will cause the resistance of the device to become larger; the disadvantage of using metallic nickel powder as the conductive filler is high cost; flow protection device

Method used

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  • Positive temperature coefficient over-current protection device and preparation method
  • Positive temperature coefficient over-current protection device and preparation method
  • Positive temperature coefficient over-current protection device and preparation method

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Embodiment Construction

[0036] In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0037] A positive temperature coefficient overcurrent protection device, comprising a core material 100 (see figure 1 middle part) and metal nickel-plated foils 210, 220 (see figure 1 upper and lower sides), metal nickel-plated foils 210, 220 are pasted on both sides of the core material 100, and the core material 100 includes high molecular polymer, conductive carbon black and conductive metal oxide particles.

[0038] The high molecular polymers, conductive carbon black, conductive metal oxides and metal hydroxides used in the following specific examples and comparative examples include the product names, grades and manufacturers of each component raw materials;

[0039] The high-molecular polymer adopts linear low-density polyethylene (LLDPE): the br...

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Abstract

The invention provides a positive temperature coefficient over-current protection device with higher performances, which relates to an electronic component by taking a conductive polymer composite material with positive temperature coefficients as raw materials and a preparation method thereof. The positive temperature coefficient over-current protection device consists of the conductive polymer composite material used as core material and metallic nickel plated foils attached to the two sides of the core material. The positive temperature coefficient over-current protection device is characterized in that the conductive polymer composite material contains conductive metallic oxide particles. The positive temperature coefficient over-current protection device made of the core material hasrelatively low resistivity and relatively high voltage resistance at the room temperature, thus increasing the safety and reliability of use thereof.

Description

technical field [0001] The invention relates to a positive temperature coefficient overcurrent protection device, and to a preparation method thereof. The invention specifically relates to a polymer overcurrent resistance device exhibiting a positive temperature coefficient resistance behavior, and the device has a relatively low room temperature resistivity and The invention has higher withstand voltage capability and belongs to the technical field of overcurrent and overtemperature protection devices. Background technique [0002] The positive temperature coefficient (Positive Temperature Coefficient, abbreviated as PTC) generally refers to semiconductor materials with a large positive temperature coefficient. Usually the PTC we refer to refers to the positive temperature coefficient thermistor, referred to as PTC Thermistor (PTC Thermistor) [0003] Polymer overcurrent protection devices exhibiting positive temperature coefficient behavior are widely used in circuit prot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/13H01C7/02H01B1/24H01C17/00
Inventor 胡定军唐佳林廖江泉金华玲
Owner SHANGHAI KETER POLYMER MATERIAL
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