Low-smoke halogen-free flame-retardant B1-grade polyolefin cable sheath material and preparation method thereof

A technology of cable sheath material and polyolefin, which is applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of decreased mechanical properties of cable materials, large amount of inorganic flame retardants, and poor resin compatibility. Achieve the effect of improving compatibility, good barrier effect and high degree of crosslinking

Pending Publication Date: 2020-05-08
ANHUI MENTOR CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide is large, and the compatibilit

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0023] Example 1

[0024] A low-smoke, halogen-free, flame-retardant B1 polyolefin cable sheath material, comprising the following raw materials in parts by weight:

[0025] EVA resin 60, linear low density polyethylene 10, maleic anhydride grafted linear low density polyethylene 1, modified halloysite nanotubes 3, modified magnesium hydroxide 40, polyphenoxy diphenyl phosphate 3 , Antioxidant 1010 0.1, polyethylene wax 0.5.

[0026] Among them, the preparation method of modified halloysite nanotubes is:

[0027] S1. Disperse the halloysite nanotubes uniformly in absolute ethanol, then add ethyl orthosilicate and mix uniformly to obtain a mixed solution, and then add an aqueous solution of ammonium borate with a mass concentration of 1% under stirring conditions to the mixed solution Adjust the pH to 2 and react at 70°C for 3 hours to obtain a composite sol. The weight ratio of halloysite nanotubes, absolute ethanol, ethyl orthosilicate, and ammonium borate aqueous solution is 1:10:0...

Example Embodiment

[0034] Example 2

[0035] A low-smoke, halogen-free, flame-retardant B1 polyolefin cable sheath material, comprising the following raw materials in parts by weight:

[0036] EVA resin 80, linear low density polyethylene 20, maleic anhydride grafted linear low density polyethylene 3, modified halloysite nanotubes 5, modified magnesium hydroxide 60, polyphenoxy diphenyl phosphate 5 , Antioxidant 1010 0.15, Antioxidant 1680.05, Polyethylene wax 1.

[0037] Among them, the preparation method of modified halloysite nanotubes is:

[0038] S1. Disperse the halloysite nanotubes uniformly in absolute ethanol, then add ethyl orthosilicate and mix uniformly to obtain a mixed solution, and then add an aqueous solution of ammonium borate with a mass concentration of 1.5% under stirring conditions to the mixed In the solution, adjust the pH to 4 and react at 80°C for 5 hours to obtain a composite sol. The weight ratio of halloysite nanotubes, absolute ethanol, ethyl orthosilicate, and ammonium bor...

Example Embodiment

[0045] Example 3

[0046] A low-smoke, halogen-free, flame-retardant B1 polyolefin cable sheath material, comprising the following raw materials in parts by weight:

[0047] EVA resin 75, linear low-density polyethylene 15, maleic anhydride grafted linear low-density polyethylene 2, modified halloysite nanotubes 4.5, modified magnesium hydroxide 50, polyphenoxy diphenyl phosphate 2 , Polyphenoxy phosphoric acid-2-10-hydrogen-9-oxa-phosphaphenanthryl hydroquinone ester 2, antioxidant 168 0.1, antioxidant 1010 0.05, polyethylene wax 0.6.

[0048] Among them, the preparation method of modified halloysite nanotubes is:

[0049] S1. Disperse the halloysite nanotubes uniformly in absolute ethanol, then add ethyl orthosilicate and mix uniformly to obtain a mixed solution, and then add an aqueous solution of ammonium borate with a mass concentration of 1.2% to the mixed solution under stirring conditions Adjust the pH to 3 and react at 75°C for 4 hours to obtain a composite sol. The weight r...

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Abstract

The invention discloses a low-smoke halogen-free flame-retardant B1-grade polyolefin cable sheath material and a preparation method thereof. The cable sheath material comprises the following raw materials in parts by weight: 60-80 parts of EVA resin, 10-20 parts of linear low-density polyethylene, 1-3 parts of maleic anhydride grafted linear low-density polyethylene, 3-5 parts of modified halloysite nanotubes, 40-60 parts of modified magnesium hydroxide, 3-5 parts of a polyphosphate flame retardant, 0.1-0.2 part of an antioxidant and 0.5-1 part of a lubricant. The cable sheath material prepared by the invention has the characteristics of low smoke and good flame retardant and fireproof properties, not only satisfies the requirements of B1-grade flame retardant properties, but also has excellent mechanical properties and a wide application range.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a low-smoke, halogen-free, flame-retardant B1 grade polyolefin cable sheathing material and a preparation method thereof. Background technique [0002] As an indispensable part of the power system, wires and cables play an irreplaceable role in daily life, commerce, and industry. In recent years, as people pay more attention to the level of fire safety, it has become an important research direction to strengthen the prevention and control management of wire and cable fire hazards, especially to improve the fire protection ability of wire and cable. Halogen-containing flame-retardant cable materials emit a lot of smoke and corrosive gases when burned, which hinders the escape routes of personnel in closed places, and has been gradually eliminated. However, the amount of inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide is large, and the compa...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08L85/02C08K9/10C08K9/06C08K7/26C08K3/22C08K5/134C08K5/526C08K13/06H01B3/44
CPCC08L23/0853H01B3/441C08K2003/2224C08K2201/011C08L2201/02C08L2201/22C08L2203/202C08L2205/035C08L2205/02C08L23/0815C08L51/06C08L85/02C08K9/10C08K9/06C08K7/26C08K3/22C08K5/134C08K5/526C08K13/06
Inventor 周国庆杭士邦
Owner ANHUI MENTOR CABLE GROUP
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