Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same

A conductive composite material, polymer-based technology, applied in the direction of cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of affecting the service life, complex surface treatment process, and low physical "entanglement" force, etc., to achieve Effects of extended service life, good resistance reproducibility and stability, and high stability characteristics

Inactive Publication Date: 2013-05-22
ANBANG ELECTRICAL GRP
View PDF3 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, although various coupling agents are added to improve the adhesion between polymers and carbon black, the polar group at one end of the coupling agent reacts with carbon black, and the organic group at the other end forms a physical "entanglement" with the polymer. ", thereby slowing down the self-agglomeration of carbon black in the polymer matrix; however, due to the short-chain organic groups on the coupling agent, the physical "entanglement" force between the long-chain molecules of the polymer is still low
If it is in a high temperature environment for a long time, the room temperature resistance will still increase significantly, which will affect its service life and operational effectiveness
In addition, the surface treatment process of carbon black by coupling agent is relatively complicated and the cost is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same
  • Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same
  • Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The volume percentage of the polymer-based conductive composite material prepared from the self-limiting temperature heating cable is:

[0026] The first crystalline polymer (melting temperature is 111°C and density is 0.925g / cm 3 low-density polyethylene), the volume percentage is 40%;

[0027] The second crystalline polymer is selected with a melting temperature of 130°C and a density of 0.947g / cm 3 The low-density polyethylene grafted with maleic anhydride, its volume percentage is 3%;

[0028] Conductive filler is nano carbon black, and its volume percentage is 48%;

[0029] The inorganic filler is zinc oxide, and its volume percentage is 7%;

[0030] The volume percentage of processing aids is 2%.

[0031] The preparation process of the self-limiting temperature heating cable is as follows:

[0032] Set the temperature of the internal mixer at 180°C and the speed at 30 rpm, first add the first crystalline polymer, the second crystalline polymer and various pro...

Embodiment 2

[0039] Compared with Example 1, the volume percentage of the first crystalline polymer is reduced from 40% to 37%, the volume percentage of the second crystalline polymer is increased from 3% to 6%, and the volume percentage of the remaining components and The preparation method remains the same.

[0040] This embodiment takes figure 1 The electrical characteristics of the ordinary self-limiting temperature heating cable shown are shown in Table 1.

Embodiment 3

[0042] Compared with Example 1, the volume percentage of the first crystalline polymer is reduced from 40% to 34%, the volume percentage of the second crystalline polymer is increased from 3% to 9%, and the volume percentage of the remaining components and The preparation method remains the same.

[0043] This embodiment takes figure 1 The electrical characteristics of the self-limiting heating cable shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
melt flow indexaaaaaaaaaa
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses a polymer matrix conductive composite material, prepared from a first crystalline polymer, a second crystalline polymer, a conductive filler, an inorganic filler and a processing auxiliary. The invention also discloses a method for preparing a temperature self-limiting heat tracing cable from the composite material. The polymer matrix conductive composite material provided by the invention contains the second crystalline polymer which is capable of improving the interface bonding between the conductive filler carbon black and polyethylene, so that the stability of the conductive network in the composite material is enhanced and the interface resistance between the conductive composite material and the electrode after the heat tracing cable is placed at a high temperatures is reduced; and the prepared temperature self-limiting heat tracing cable has excellent resistance reproducibility and stability.

Description

technical field [0001] The invention relates to a polymer-based conductive composite material, and also relates to a method for preparing a self-limiting temperature heating cable by using the composite material. Background technique [0002] The resistivity of the polymer-based conductive composite material has the characteristic of changing with the temperature. When the power is turned on, the circuit continues to heat up. When the high temperature occurs, the resistance will instantly rise to a high resistance state, making the cable open. State, in order to achieve the purpose of temperature limit. Therefore, the polymer conductive composite material can be prepared into a heating core tape and applied to the cable. [0003] The polymer-based conductive composite material is generally composed of a polymer base material and a conductive filler, and the conductive filler is uniformly distributed in the polymer base material macroscopically. Polymers are generally polyo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L27/16C08L23/06C08L23/08C08L23/16C08L33/12C08L51/06C08K13/02C08K3/04C08K3/34C08K3/26C08K3/22H01B13/00
Inventor 李贻连
Owner ANBANG ELECTRICAL GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap