Method for preparing a conductive resin composition

A conductive resin and composition technology, applied in the field of preparation of conductive resin composition, can solve the problem of reducing the impact resistance, elongation, wear resistance and mechanical properties of thermoplastic resins, product commercialization restrictions, and inability to achieve electrical conductivity, etc. problems, to achieve the effect of preventing the reduction of mechanical properties and good electrical conductivity

Active Publication Date: 2017-08-29
KOREA KUMHO PETROCHEMICAL CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0006] However, in order to derive a meaningful result of imparting electrical conductivity, it is necessary to add about 10 to 20% by weight or more of conductive filler relative to the thermoplastic resin, which results in lowering of the thermoplastic resin such as impact resistance, elongation, and abrasion resistance. inherent mechanical properties
[0007] In particular, in fields where both electrical conductivity and mechanical properties of t

Method used

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  • Method for preparing a conductive resin composition
  • Method for preparing a conductive resin composition
  • Method for preparing a conductive resin composition

Examples

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Example Embodiment

[0032] figure 1 The method for preparing the conductive resin composition according to an aspect of the present invention is schematically shown. Reference figure 1 , The preparation method of the conductive resin composition according to one aspect of the present invention may include: step (a), preparing a master batch by extruding carbon nanotubes and the first olefin polymer resin; and step (b), mixing the Masterbatch and second olefin polymer resin.

[0033] The conductive resin composition can basically be composed of a polymer resin having a certain level of mechanical properties and moldability and a conductive material that can impart conductivity to the polymer resin, for example, metals and other inorganic substances. In order to prepare the aforementioned conductive resin composition, a process for mixing the polymer resin and the conductive material is required.

[0034] In order to improve the conductivity of the existing conductive resin composition, a technique of ...

Example Embodiment

[0067] Example 1

[0068] Put multi-walled carbon nanotubes (MWCNT) into the side feeder of the twin-screw extruder, and put polyethylene (HDPE, melt index 5.0g / 10min, ASTMD 1238) into the main hopper at an input speed of 25㎏ / hr. Then, melt-kneading was performed under the conditions of a kneading speed of 200 rpm and a processing temperature of 230° C., thereby preparing a masterbatch with a carbon nanotube content of 10% by weight.

[0069] Put the prepared masterbatch and different types of polyethylene (HDPE, melt index 0.3g / 10min, ASTM D1238) into a twin-screw extruder at the same time, and proceed at a kneading speed of 200rpm and a processing temperature of 250℃. Melt-kneaded, thereby preparing a resin composition with a carbon nanotube content of 6% by weight.

Example Embodiment

[0070] Example 2

[0071] Except that the content of carbon nanotubes contained in the masterbatch was adjusted to 10% by weight, and the content of carbon nanotubes contained in the resin composition was adjusted to 5% by weight, the rest was the same as in Example 1. The method produced the resin composition.

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Abstract

The present invention provides a method for preparing a conductive resin composition. According to one aspect of the present invention, a masterbatch comprising a high content of a conductive filler is prepared by mixing a conductive filler and a first olefin polymer resin. The first olefin polymer resin is mixed with the same or different kinds of the second olefin polymer resin, so that the mechanical properties of the olefin polymer resin can be prevented from being lowered and good electrical conductivity can be realized.

Description

technical field [0001] The present invention relates to a method for preparing a conductive resin composition, and in more detail, relates to a method for preparing a conductive resin composition capable of achieving a balanced balance between conductivity and mechanical properties by alleviating the tradeoff between them. Background technique [0002] Thermoplastic resins are plastics that soften when heated and become plastic when cooled. The above-mentioned thermoplastic resins have excellent processability and moldability, so they are widely used in various household products, office automation equipment, electrical and electronic products, automotive parts, etc. [0003] Also, attempts to use the above-mentioned thermoplastic resins as high value-added materials by adding special properties according to the types and characteristics of products made using the above-mentioned thermoplastic resins continue. [0004] In particular, when a thermoplastic resin is used in a ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K7/24C08J3/22B29C47/92B29C47/00B29C48/92
CPCB29C48/0011B29C48/022B29C48/92B29C2948/9258B29K2023/065C08J3/226C08J2323/06C08J2423/06C08K2201/001C08K2201/011C08L23/06C08L2203/18C08L2205/025C08L2205/03C08L2207/062C08K7/24C08L23/0853
Inventor 吴东勋金起弘金东焕
Owner KOREA KUMHO PETROCHEMICAL CO LTD
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