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Fireproof expanding low-smoke halogen-free flame-retardant sheath material and preparation method thereof

A flame-retardant sheath and fire-resistant technology, applied in the direction of plastic/resin/wax insulators, organic insulators, electrical components, etc., to achieve the effects of reducing heat release rate, improving flame-retardant performance, and excellent heat insulation

Inactive Publication Date: 2017-05-31
中广核高新核材科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on low-smoke, halogen-free, flame-retardant and fire-resistant cable materials in the market, which is an important research direction in the field of flame-retardant and fire-resistant wire and cable in the future.

Method used

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  • Fireproof expanding low-smoke halogen-free flame-retardant sheath material and preparation method thereof
  • Fireproof expanding low-smoke halogen-free flame-retardant sheath material and preparation method thereof
  • Fireproof expanding low-smoke halogen-free flame-retardant sheath material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1~3

[0049] Examples 1-3: A fire-resistant expansion low-smoke halogen-free flame-retardant sheathing material, which consists of the following components by weight, as shown in Table 1:

[0050] Table 1

[0051]

[0052] The ethylene content of the above-mentioned ethylene-vinyl acetate copolymer is 14-40%, and the melt flow rate is 2-8g / 10min;

[0053] The melt flow rate of the above-mentioned ethylene-α-octene copolymer is 1~5 g / 10min, and the elongation at break is ≥600%;

[0054] The tensile strength of the above-mentioned metallocene polyethylene is ≥15MPa, and the elongation at break is ≥500%;

[0055] The above-mentioned maleic anhydride grafted amorphous polyolefin has a graft rate of 1.0%~1.5%, and its melt index is 1~10g / 10min;

[0056] The particle size of the above-mentioned expandable graphite is 80-200 mesh, and the expansion rate is 200-350ml / g;

[0057] The average degree of polymerization of the above-mentioned ammonium polyphosphate is ≥50, and the content ...

Embodiment 1

[0061] In embodiment 1, ethylene-vinyl acetate copolymer is EVA14-2 produced by Beijing Organic Chemicals, ethylene-α-octane copolymer is 8003 produced by Dow Chemical, and metallocene polyethylene is SP5040 produced by Mitsui, Japan;

Embodiment 2

[0062] In embodiment 2, ethylene-vinyl acetate copolymer is EVA265 produced by Dow Dupont, ethylene-α-octane copolymer is 8150 produced by Dow Chemical, and metallocene polyethylene is SP1071C produced by Japan Mitsui;

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Abstract

The invention discloses a fireproof expanding low-smoke halogen-free flame-retardant sheath material and a preparation method thereof. The fireproof expanding low-smoke halogen-free flame-retardant sheath material consists of the following components in parts by weight: 40-65 parts of an ethylene-vinyl acetate copolymer, 20-50 parts of an ethylene-alpha-octene copolymer, 10-20 parts of metallocene polyvinyl resin, 5-10 parts of maleic anhydride grafting amorphous polyolefine, 5-8 parts of expandable graphite, 6-10 parts of glycol, 12-15 parts of ammonium polyphosphate, 5-12 parts of dicyandiamide, 20-50 parts of boehmite, 50-70 parts of nanometer aluminum hydroxide, 25-40 parts of magnesium hydroxide, 5-7 parts of a low-melting-point glass powder, 2-5 parts of organic montmorillonite clay, 3-8 parts of carbon nanotubes, 0.5-2 parts of an antioxidant 1010, 0.5-2 parts of a silane coupling agent A-172, 2-6 parts of silicone master batches and 2-5 parts of hydroxyl silicone oil. The fireproof expanding low-smoke halogen-free flame-retardant sheath material disclosed by the invention has dual characteristics of being flame retardant and fireproof, after the fireproof expanding low-smoke halogen-free flame-retardant sheath material is in contact with high temperature to catch a fire, a compact expanding carbon layer is formed, and the carbon layer has the characteristics of being capable of isolating heat, reducing the temperature and isolating oxygen and being flame-retardant and fireproof, so that normal operation of electric cable lines of wires is guaranteed.

Description

technical field [0001] The invention relates to the technical field of a halogen-free flame-retardant sheathing material, in particular to a fire-resistant expansion low-smoke halogen-free flame-retardant sheathing material and a preparation method thereof. Background technique [0002] With the development of social economy, the consumption of electric wire and cable increases rapidly, and electrical fire accidents also occur frequently. From the tragic lessons of electrical fire accidents, people have gradually realized that in some important places, such as large power stations, oil production platforms, petrochemical enterprises, ships, large command and control centers and high-rise buildings, underground buildings, tunnels, subways and other lines, the main Electrical equipment, after a fire, the line can maintain normal operation for a certain period of time, which is of great help to rescue work and minimizes casualties and property losses. With the continuous impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L51/06C08L83/04C08L83/06C08K13/04C08K7/24C08K3/04C08K3/32C08K3/34C08K3/22C08K5/134C08K5/053C08K5/315C08K3/40H01B3/44
CPCC08L23/0853C08K2201/011C08L23/0815C08L2201/02C08L2201/22C08L2203/202C08L2205/035H01B3/441C08L23/06C08L51/06C08L83/04C08L83/06C08K13/04C08K7/24C08K3/04C08K2003/323C08K3/34C08K2003/2227C08K2003/2224C08K5/1345C08K5/053C08K5/3155C08K3/346C08K3/40
Inventor 张家宏单永东
Owner 中广核高新核材科技(苏州)有限公司