Graphene modified low-smoke halogen-free flame-retardant polyolefin semiconductive material and preparation method thereof

A graphene modification, polyolefin technology, applied in plastic/resin/wax insulators, organic insulators, etc., can solve problems such as the decline of overall mechanical properties and flame retardant properties, improve appearance and extrusion, improve scratching Grinding, improving photostability

Inactive Publication Date: 2019-06-14
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the halogen-free flame-retardant semi-conductive materials for cables on the market are made of carbon nanotubes combined with high-conductivity carbon black. Due to the relatively high content of carbon black in cable materials, it is easy to cause the overall performance of the material, especially the mechanical properties and flame retardancy. The performance is degraded, and further improvement is needed to optimize and improve the overall performance of the product

Method used

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  • Graphene modified low-smoke halogen-free flame-retardant polyolefin semiconductive material and preparation method thereof
  • Graphene modified low-smoke halogen-free flame-retardant polyolefin semiconductive material and preparation method thereof
  • Graphene modified low-smoke halogen-free flame-retardant polyolefin semiconductive material and preparation method thereof

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[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The preparation method of a graphene-modified low-smoke halogen-free flame-retardant polyolefin semiconducting material claimed in the present invention comprises the following steps:

[0032] (1) Each component is selected according to the proportioning ratio described in Table 1, the raw materials, and the accurately weighed resin and additives are fully mixed in a high mixer, and the mixing temperature of the twin-screw extruder is The temperature is 25-70℃, and the...

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Abstract

The invention discloses a graphene modified low-smoke halogen-free flame-retardant polyolefin semiconductive material and a preparation method thereof. The graphene modified low-smoke halogen-free flame-retardant polyolefin semiconductive material comprises the following components in parts by weight: 100 parts of polyolefin resin, 1.0-4.5 parts of a lubricant, 0.15-0.45 part of an antioxidant, 6-20 parts of graphene and 28-50 parts of a flame retardant; the invention further provides a preparation method of a modified low-smoke halogen-free flame-retardant polyolefin conductive material. Thegraphene modified low-smoke halogen-free flame-retardant polyolefin semiconductive material provided by the invention has excellent mechanical properties and electrical conductivity, is completely environment-friendly, fine and smooth in extruded surface, small in fuming, and suitable for a semi-conductive outer shielding layer of a medium-high voltage cable with higher requirements on flame retardance, environmental protection and light transmittance, and can better guarantee normal use and operation of the cable by being matched with a flame-retardant sheath.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a graphene-modified low-smoke halogen-free flame-retardant polyolefin semiconductive material and a preparation method thereof. Background technique [0002] With the improvement of environmental protection and safety awareness around the world, flame-retardant and environmentally friendly cable materials have been widely used and have great development potential, especially in the field of medium and high voltage transmission. At present, most of the halogen-free flame-retardant semi-conductive materials for cables on the market are made of carbon nanotubes combined with high-conductivity carbon black. Due to the relatively high content of carbon black in cable materials, it is easy to cause the overall performance of the material, especially the mechanical properties and flame retardancy. The performance is degraded, and further improvement is needed to optimize and imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K3/04C08K5/098H01B3/44
Inventor 袁孝明吴芳芳
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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