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Polyolefin resin composition comprising different rubber components for insulating electric cables

A polyolefin resin and composition technology, applied in plastic/resin/wax insulators, organic insulators, etc., can solve the problems of reduced flexibility, low thermal deformation temperature, difficult construction and installation, etc., and achieves excellent low-temperature impact strength, mechanical Excellent physical properties and excellent heat resistance

Active Publication Date: 2019-06-21
HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the content of the rubber phase is small, the flexibility will decrease when used as a cable insulation material, making it difficult to build and install. If the content of the rubber phase is high, the advantages of polypropylene that affect the mechanical and physical properties will be lost. question
[0006] In addition, Korean Laid-Open Patent Application No. 1998-0009364 discloses a thermoplastic polyolefin resin composition for automotive interior and exterior materials comprising polypropylene resin, ethylene-propylene rubber, and ethylene-α-olefin copolymer, but the composition The high melt index is in the range of 12.7-20.1g / 10 minutes, and the heat distortion temperature is also low at 61-75°C, so it is not suitable for use as an insulating material for cables

Method used

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  • Polyolefin resin composition comprising different rubber components for insulating electric cables
  • Polyolefin resin composition comprising different rubber components for insulating electric cables
  • Polyolefin resin composition comprising different rubber components for insulating electric cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] (A) 74.8% by weight of polyolefin resin A1; (B) 10% by weight of rubber copolymer resin B1; (C) 15% by weight of rubber copolymer resin C1; and 0.2% by weight A polyolefin resin composition composed of antioxidants and neutralizers.

[0082] Mix the above three polyolefin resins (A), (B) and (C) with antioxidants and neutralizers in a Henschel mixer (SSM-75) for 30 minutes, and then mix them at 230° C. , melt-extruded through a twin-screw extruder PLATEK (TEK-30), and granulated by a granulator. The pellets of the resin composition thus prepared were injection-molded into test pieces specified in ASTM No. 4 using a 150-ton injection molding machine (Selexte 150).

Embodiment 2～4 and comparative example 1～6

[0084] A composition was prepared by the same method as in Example 1, except that the kind and content of resins constituting the composition were changed as shown in Table 1 below. The numbers described in the following Table 1 represent the content on a weight % basis.

[0085] [Table 1]

[0086]

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Abstract

The present invention relates to a polyolefin resin composition that is excellent in low-temperature impact strength, softness, and thermal stability. In particular, the present invention relates to apolyolefin resin composition that is excellent in low-temperature impact strength and softness since the composition comprises a large amount of a rubber phase of different rubber components uniformly dispersed in a continuous phase of a polyolefin, as well as excellent in heat resistance by virtue of a stable structure of the rubber phase of different rubber components and the continuous phase of a polyolefin. Therefore, the polyolefin resin composition can be used as an insulation layer for electric cables even without being crosslinked.

Description

technical field [0001] The present invention relates to a polyolefin resin composition excellent in low-temperature impact strength, softness, and thermal stability, and more particularly, to a polyolefin resin composition obtained by uniformly dispersing a large amount of heterogeneous rubber on a polyolefin continuous phase It has excellent low-temperature impact strength and flexibility, and at the same time has excellent heat resistance due to the stable structure of the dissimilar rubber phase and the polyolefin continuous phase, so it can be used as an insulating layer material for cables without crosslinking. Background technique [0002] Polypropylene, which is one of polyolefins, has excellent mechanical physical properties and barrier properties, high thermal stability, however, it is not suitable as a cable insulation material requiring flexibility due to poor impact characteristics at low temperatures and high rigidity. Therefore, polyethylene (high-density polye...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/16C08L23/08C08L23/14C08L53/00H01B3/44
CPCC08L23/142C08L2203/202C08L2205/02C08L2205/03C08L23/16C08L23/0815C08F10/06C08F210/06C08L23/10C08L23/12C08L53/00C08F2500/12C08F2500/17
Inventor 李殷雄金奉奭全龙成
Owner HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD
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