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Compound cable material with PTC characteristic and preparation method thereof

A technology of composite cable and manufacturing method, which is applied in the field of cable materials, to achieve the effect of no casting at the die head, stable wire diameter, and increased conductive current

Inactive Publication Date: 2014-10-15
SUZHOU HENGLI COMM MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Existing PTC materials cannot directly add carbon nanotubes. In order to apply carbon nanotubes to PTC materials and create new composite cable materials with PTC characteristics, the scientific community has been conducting continuous research.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] (3) Preparation of composite materials:

[0039] Mix the rheological agent, anti-aging agent and polyolefin base material to form a polymer, and then use a high-torque twin-screw extruder to uniformly disperse the carbon nanotube masterbatch obtained in step (2) in the polymer, and then extrude Composite cable materials with PTC characteristics are produced by granulation. The mass percentage of each component of the polymer is as follows: rheological agent 0.5% to 2%, antiaging agent 0.2% to 0.8%, and the rest is polyolefin base material; wherein the rheological agent is specifically high molecular weight siloxane, and the antiaging agent is specifically It is antioxidant 1010; the mass percentage of each component of the composite cable material is as follows: polymer 75%-95%, the rest is carbon nanotube masterbatch, and the sum of the two substances is 100%.

[0040] A composite cable material with PTC characteristics, which contains a polymer and a carbon nanotube ...

specific Embodiment 1

[0042] Specific embodiment one: a composite cable material with PTC characteristics, which includes a polymer and a carbon nanotube masterbatch, wherein the mass percent of the polymer is 75%, the mass percent of the carbon nanotube masterbatch is 25%, and the mass percent of each component of the polymer 0.5% rheological agent, 0.2% anti-aging agent, and the rest are polyolefin base materials; the mass percentages of each component of the carbon nanotube masterbatch are 5% surface-modified carbon nanotubes, 0.5% coupling agent, and antioxidant 0.1%, polyethylene 30%, the rest is maleic anhydride grafted polyethylene, the five substances are added together to be 100% carbon nanotube masterbatch uniformly dispersed in the polymer; the rheological agent in the polymer is specifically high molecular weight silicon Oxygen, the antiaging agent is specifically antioxidant 1010; the coupling agent in the carbon nanotube masterbatch is specifically silane coupling agent a-172, and the ...

specific Embodiment 2

[0051] Specific embodiment two: the composite cable material with PTC characteristic, it comprises polymer, carbon nanotube masterbatch, wherein polymer mass percent 85%, carbon nanotube masterbatch mass percent 15%, each component mass percent of polymer 1.5% rheological agent, 0.5% anti-aging agent, and the rest are polyolefin base materials; the mass percentages of the components of the carbon nanotube masterbatch are 15% surface-modified carbon nanotubes, 1.5% coupling agent, and antioxidant 0.5%, 40% polyethylene, the rest is maleic anhydride grafted polyethylene, the addition of the five substances is 100% carbon nanotube masterbatch uniformly dispersed in the polymer; the rheological agent in the polymer is specifically high molecular weight silicon Oxygen, the antiaging agent is specifically antioxidant 1010; the coupling agent in the carbon nanotube masterbatch is specifically silane coupling agent a-172, and the antioxidant is specifically antioxidant 1010.

[0052] ...

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Abstract

The invention discloses a compound cable material with a PTC characteristic and a preparation method thereof, which enables that a carbon nanotube can be uniformly mixed with a base material, and provides the compound cable material with the PTC characteristic. The compound cable material with the PTC characteristic can be used as a sheath material of heating cables in oil fields and chemical works; the appearance of the compound cable material with the PTC characteristic is smooth, the compound cable material is wear-resistant, good in bending and rolling resistance, high temperature and pressure resistance and compressive property, good in processability, and convenient to squeeze out; the cable products made of the compound cable material with the PTC characteristic have light and soft structures. The preparation method includes the following steps: mixing the surface modified carbon nanotube with a base resin through fusion and mixing to prepare master batch of the carbon nanotube; mixing a rheological agent, an inhibitor and a polyolefine base material to form a polymer; then, fully mixing the master batch of the carbon nanotube with the polymer through a twin-screw extruding machine, extruding the mixture and granulating, so as to form the compound cable material with the PTC characteristic.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a manufacturing method of a composite cable material with PTC characteristics, and the invention also provides a composite cable material with PTC characteristics. Background technique [0002] Composite conductive polymer materials have been widely concerned by researchers because of their wide application in electronic appliances, national defense, aviation, military and other fields, and have had a profound impact on the development of the national economy. An important feature of the composite conductive polymer material is that its resistivity decreases nonlinearly with the increase of the volume fraction of the conductive filler. When the volume fraction of the conductive filler increases to a certain critical value, the resistivity of the composite material suddenly decreases. , the variation range can reach more than 10 orders of magnitude. At this time, the criti...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L23/08C08L25/06C08K9/00C08K9/02C08K9/06C08K7/24C08J3/22
CPCC08L23/06C08J3/226C08J2323/06C08J2323/08C08J2323/12C08J2325/06C08J2423/06C08J2451/06C08L23/0815C08L23/0853C08L23/12C08L25/06C08L2203/202C08L2205/025C08L2205/035
Inventor 程晓松孙玉萍于德宝
Owner SUZHOU HENGLI COMM MATERIAL
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