General halogen-free and flame-retardant low-smoke cable material for sheath and insulation materials and preparation method of cable material

A flame-retardant cable material and sheath technology, which is applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of not meeting the requirements of low-smoke, halogen-free flame-retardant insulating materials, loss of electrical properties, etc., and achieve maintenance Effect of improving mechanical properties and flame retardancy

Inactive Publication Date: 2018-11-02
JIANGSU BAOYUAN GAOXIN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this loses a large part of the electrical properties, resulting in failure to meet the requirements of low-smoke, halogen-free, flame-retardant insulating materials

Method used

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  • General halogen-free and flame-retardant low-smoke cable material for sheath and insulation materials and preparation method of cable material

Examples

Experimental program
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Effect test

preparation example Construction

[0024] The embodiment of the present invention also provides a method for preparing a universal low-smoke halogen-free flame-retardant cable material for sheath and insulation, which includes the following steps:

[0025] Add the main flame retardant, auxiliary flame retardant and surface activation treatment agent to the high mixer respectively, and activate the treatment at 80-140 ° C for 5-40 minutes to obtain high-activity flame-retardant fillers;

[0026] Mix and granulate the highly active flame retardant filler together with polyethylene, ethylene-vinyl acetate copolymer, ethylene-octene copolymer and processing aids on a mixing device to obtain the general low-smoke sheath and insulation Halogen-free flame retardant cable compound.

[0027] Wherein, the mixing equipment is a single-screw extruder or a two-stage extruder.

Embodiment 1

[0030] The general low-smoke halogen-free flame-retardant cable material for sheath and insulation in this embodiment includes the following components by weight: 6 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 4 parts of ethylene-octene copolymer, 32 parts 1 part of main flame retardant, 8 parts of auxiliary flame retardant, 2 parts of surface active treatment agent and 3 parts of processing aid.

[0031] Wherein, the polyethylene is linear low density polyethylene, the main flame retardant is hydromagnesite, the auxiliary flame retardant is magnesium hydroxide, and the surface activation treatment agent is a silane coupling agent.

[0032] The preparation method comprises the steps of:

[0033] Add the main flame retardant, auxiliary flame retardant and surface activation treatment agent into the high mixer respectively, and activate the treatment at 90°C for 10 minutes to obtain highly active flame retardant fillers;

[0034] Mix and granulate the hi...

Embodiment 2

[0036] The general low-smoke halogen-free flame-retardant cable material for the sheath and insulation in this embodiment includes the following components in parts by weight: 7 parts of polyethylene, 15 parts of ethylene-vinyl acetate copolymer, 5 parts of ethylene-octene copolymer, 45 parts 1 part of main flame retardant, 5 parts of auxiliary flame retardant, 3 parts of surface active treatment agent and 4 parts of processing aid.

[0037] Wherein, the polyethylene is metallocene polyethylene, the main flame retardant is hydromagnesite, the auxiliary flame retardant is aluminum hydroxide, and the surface activation treatment agent is an aluminate coupling agent.

[0038] The preparation method comprises the steps of:

[0039] Add the main flame retardant, auxiliary flame retardant and surface activation treatment agent into the high mixer respectively, and activate it at 100°C for 15 minutes to obtain highly active flame retardant fillers;

[0040] Mix and granulate the hig...

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PUM

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Abstract

The invention provides a general halogen-free and flame-retardant low-smoke cable material for sheath and insulation materials. The general halogen-free and flame-retardant low-smoke cable material comprises the following components in parts by weight: 5-10 parts of polyethylene, 10-30 parts of an ethylene-vinyl acetate copolymer, 3-15 parts of an ethylene-octene copolymer, 32-70 parts of a main flame retardant, 0-20 parts of an auxiliary flame retardant, 1-4 parts of a surface activating agent and 2-8 parts of a processing aid. A preparation method comprises the following steps: respectivelyadding the main flame retardant, the auxiliary flame retardant and the surface activating agent into a high-speed mixer; activating at 80-140 DEG C for 5-40 min to obtain a highly active flame-retardant filler; and mixing and granulating the highly active flame-retardant filler with other components in mixing equipment to obtain the halogen-free and flame-retardant low-smoke cable material. The preparation method provided by the invention has the advantages that hydromagnesite is used as the main flame retardant to improve flame retardancy of the cable material and maintain mechanical properties, electrical properties and processing properties of the cable material at the same time on the premise of high filling, i.e., high cost performance.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a universal low-smoke, halogen-free, flame-retardant cable material for sheathing and insulation and a preparation method thereof. Background technique [0002] The insulating materials and sheath materials widely used in wires and cables are mainly flammable polymer materials, which often cause combustion due to self-heating or external fires during the transmission of electric energy, posing serious safety hazards. Traditional flame-retardant cables are widely used in combination with halogen-containing flame retardants (such as polybrominated diphenyl ethers, polybrominated biphenyls, etc.). In the event of a fire, the cable will produce a large amount of toxic smoke and corrosive gas after burning, endangering personal safety and delaying rescue work. [0003] Low-smoke, halogen-free, flame-retardant materials do not produce harmful gases when burned, and produce les...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K9/06C08K9/04C08K3/26C08K3/22C08K3/02C08K3/38C08K3/32C08K3/34H01B3/44
CPCC08K2003/026C08K2003/2224C08K2003/267C08K2003/387C08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/03C08L2207/066H01B3/441C08L23/06C08L23/0815C08K9/06C08K9/04C08K9/08C08K3/26C08K3/22C08K3/02C08K3/38C08K3/32C08K3/346
Inventor 孙江波解朝辉解洪俊
Owner JIANGSU BAOYUAN GAOXIN ELECTRIC
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