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Fluoroplastic base material composite material used in electronic device and used for extinguishing arc

A composite material and fluoroplastic technology, applied in the field of arc extinguishing composite materials, can solve the problems of easy carbonization, fracture and softening of materials, and achieve the effect of reducing the risk of corrosion

Active Publication Date: 2014-06-11
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these materials are easily carbonized, fractured and softened

Method used

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  • Fluoroplastic base material composite material used in electronic device and used for extinguishing arc
  • Fluoroplastic base material composite material used in electronic device and used for extinguishing arc
  • Fluoroplastic base material composite material used in electronic device and used for extinguishing arc

Examples

Experimental program
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Effect test

preparation example Construction

[0048] Preparation method of composite material

[0049] The method for preparing the composite material of the present invention needs to adjust the processing route according to the type of fluororesin. For the preparation of PTFE-based composites, powder processing methods are preferred. Specifically, the PTFE and the filler are first dry-blended and mixed evenly, and then the mixed powder is processed by molding and sintering to obtain the composite material. For the preparation of composite materials based on several other fluororesins, it can be directly prepared by conventional extrusion molding methods in this field.

[0050] Arc extinguishing principle of composite materials

[0051] Unlike the arc filled with SF which has high insulation and arc extinguishing performance 6 , the present invention fills the environment-friendly gas around the arc, and only releases an appropriate amount of electronegative elements (fluorine) into the gas when the arc is generated t...

Embodiment 1

[0066] Embodiment 1: containing 5% CaF 2 Preparation of PTFE Composites

[0067] Add CaF to PTFE powder with a particle size of 20μm-50μm 2 Powder (accounting for 5% of the total mass of the composite material), dry-blended to make it evenly mixed. The mixed powder was then hydrostatically pressed into a cylindrical blank and treated in an oven for 48 hours. Finally, the cylindrical composite material is turned into a strip to obtain PTFE+5%CaF 2 composite products.

Embodiment 2

[0068]Example 2: Containing 5% CeF 3 Preparation of PTFE Composites

[0069] Using the method described in Example 1, using PTFE powder and CeF with a particle size of 20 μm-50 μm 3 Powder (accounting for 5% of the total mass of the composite material) made PTFE+5%CeF 3 composite products.

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Abstract

The invention relates to a novel composite material. The composite material comprises fluoroplastic which is adopted as a base material, and a specific inorganic filler. The composite material is expected to generate electronegative elements to limit arc current and absorb arc energy so as to promote arc extinguishing.

Description

technical field [0001] The invention relates to an arc-extinguishing composite material, which contains fluoroplastic as a base material and specific inorganic filler. The invention also relates to the use of said arc-quenching composite in electronic devices which generate an electric arc during circuit breaking, such as MV / HV load-break switchgear, circuit breakers or contactors. Background technique [0002] An electric arc is a visible electrical current, usually in an insulating medium, that occurs between two conductive surfaces that are close to each other, provided that a sufficient potential difference exists between the two surfaces. [0003] The current is generally evidenced by the ionization of the insulating medium it passes through, and thus just constitutes a plasma which may reach high temperatures such as 2000(K) to 10000K. [0004] When struck, arcing can cause the disintegration of surrounding elements, as well as violent electromagnetic disturbances, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/76H01H73/18
Inventor 刘宇
Owner SCHNEIDER ELECTRIC IND SAS
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