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Cable filler composition

A technology of cable filling and composition, which is applied in the field of automatic temperature-controlling cable filler composition, which can solve the problems of general flame retardancy and achieve the effects of high PTC strength, good temperature control performance and good strength

Inactive Publication Date: 2012-12-19
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength, elongation and flame retardancy of the filler composition are relatively general.

Method used

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  • Cable filler composition
  • Cable filler composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 75Kg modified PVC, 7Kg PVC stabilizer, 3Kg calcium carbonate filler, 8Kg powdered nitrile rubber, 6Kg diatomaceous earth, 0.4Kg BaTiO 3 , 0.15Kg SrTiO 3 , 0.2Kg Y 2 o 3 , 0.3Kg Nb 2 o 5 , 0.15Kg MnO 2 , 0.2Kg Yb 2 o 3 , 0.3Kg Tu 2 o 3 Put it into a high-speed mixer and heat and mix for 20 minutes at a heating temperature of 115°C; BaTiO 3 , SrTiO 3 , Y 2 o 3 , Nb 2 o 5 , MnO 2 , Yb 2 o 3 , and Tu 2 o 3 The fineness is 1500 mesh; the mixed material is extruded and granulated by a granulator to obtain a cable filler composition. The automatic temperature control cable material filler composition is used in the production of heating cables to make automatic temperature control type heating cables, and the self-limiting temperature of the heating cables is 78±4°C.

Embodiment 2

[0018] 80Kg modified PVC, 8Kg PVC stabilizer, 4Kg calcium carbonate filler, 5Kg powdered nitrile rubber, 5Kg diatomaceous earth, 0.2Kg BaTiO 3 , 0.2Kg SrTiO 3 , 0.15Kg Y 2 o 3 , 0.2Kg Nb 2 o 5 , 0.2Kg MnO 2 , 0.2Kg Yb 2 o 3 , 0.4KgTu 2 o 3 Put it into a high-speed mixer and heat and mix for 30 minutes at a heating temperature of 110°C; BaTiO 3 , SrTiO 3 , Y 2 o 3 , Nb 2 o 5 , MnO 2 , Yb 2 o 3 , and Tu 2 o 3 The fineness is 1500 mesh; the mixed material is extruded and granulated by a granulator to obtain a cable filler composition. The automatic temperature control cable material filler composition is used in the production of heating cables to make automatic temperature control type heating cables, and the self-limiting temperature of the heating cables is 73±4°C.

Embodiment 3

[0020] 85Kg modified PVC, 5Kg PVC stabilizer, 3Kg calcium carbonate filler, 7Kg powdered nitrile rubber, 6Kg diatomaceous earth, 0.5Kg BaTiO 3 , 0.1Kg SrTiO 3 , 0.3Kg Y 2 o 3 , 0.1Kg Nb 2 o 5 , 0.15Kg MnO 2 , 0.2Kg Yb 2 o 3 , 0.3KgTu 2 o 3 Put it into a high-speed mixer and heat and mix for 25 minutes at a heating temperature of 117°C; BaTiO 3 , SrTiO 3 , Y 2 o 3 , Nb 2 o 5 , MnO 2 , Yb 2 o 3 , and Tu 2 o 3 The fineness is 2000 mesh; the mixed material is extruded and granulated by a granulator to obtain a cable filler composition. The automatic temperature control cable material filler composition is used in the production of heating cables to produce automatic temperature control type heating cables, and the self-limiting temperature of the heating cables is 71±4°C.

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Abstract

The invention provides a cable filler composition, particularly a cable filler composition which has the advantages of high PTC (positive temperature coefficient) strength, favorable temperature control property, small self-limit temperature fluctuation, high strength, high tension rate and favorable flame retardancy. The cable filler composition is prepared from modified PVC (polyvinyl chloride), a PVC stabilizer, a filler, powder nitrile-butadiene rubber, kieselguhr, BaTiO3, SrTiO3, Y2O3, Nb2O5, MnO2, Y2O3 and Tu2O3.

Description

technical field [0001] The invention relates to a cable filler, in particular to an automatic temperature-controlling cable filler composition with good physical and chemical properties. Background technique [0002] The so-called PTC characteristic is the positive temperature coefficient characteristic of resistance. As the temperature rises, the resistance of the heating element increases, thereby limiting or cutting off the current, automatically adjusting the output current, and keeping the temperature constant. Heating cables made of resins with this characteristic are called automatic temperature-control heating cables. [0003] The current automatic temperature control cable filler composition is generally based on a crystalline polymer compound, mixed with a large amount of conductive particles such as carbon black, graphite and metal powder, and the automatic temperature control type heating material made of this filler composition Cables, during continuous energiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08K13/02C08K3/34C08K3/22C08K3/26
Inventor 李斌梁福才王雪松
Owner JIANGSUSNGSHANG CABLE GROUP
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