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Low-smoke, halogen-free and flame-retardant irradiation crosslinking polyolefin composite material and preparation method thereof

A composite material and polyolefin technology, applied in the field of flame-retardant polyolefin materials, to achieve the effects of improved mechanical properties, good flame-retardant properties, and reduced usage

Inactive Publication Date: 2013-12-18
ANHUI ZONGHENG HI TECH CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there has been no use of substances with flame retardant and smoke suppression synergistic effects to coat inorganic metal hydroxides in polyolefin materials to improve the flame retardant efficiency of flame retardants and improve the comprehensive physical properties of polyolefin materials.

Method used

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  • Low-smoke, halogen-free and flame-retardant irradiation crosslinking polyolefin composite material and preparation method thereof
  • Low-smoke, halogen-free and flame-retardant irradiation crosslinking polyolefin composite material and preparation method thereof
  • Low-smoke, halogen-free and flame-retardant irradiation crosslinking polyolefin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take by weight 45 parts of ethylene-vinyl acetate copolymers, 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymers, 0.5 parts of organically modified montmorillonite, and knead for 10 minutes at 140 ° C in an internal mixer, Then add 50 parts of magnesium hydroxystannate microencapsulated aluminum hydroxide, 1.5 parts of triallyl isocyanurate, 0.4 parts of antioxidant 300, and 0.4 parts of antioxidant DLTP, and mix the components of the raw materials evenly Finally, it is extruded and granulated at 140°C to form an electron beam irradiation cross-linked polyolefin cable material, and then the polyolefin cable material is extruded and coated on the conductive core of the wire and cable, and finally the power and energy are respectively 10KW and 10MeV The cross-linking is irradiated under the electron beam, and the irradiation dose is 120KGy.

[0022] In order to further verify the performance of the flame retardant synergist microencapsulated metal hydro...

Embodiment 2

[0026] Weigh 50 parts of ethylene-vinyl acetate copolymer, 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, and 5 parts of organically modified montmorillonite in parts by weight, and mix in an internal mixer at 140°C for 10 minutes , then add 45 parts of hydrous magnesium aluminate microencapsulated aluminum hydroxide, 0.5 part of triallyl isocyanurate, 0.4 part of antioxidant 300, and 0.4 part of antioxidant DLTP, and mix the components of the raw materials After uniformity, the components of the raw materials are mixed uniformly, extruded and granulated at 160°C to form an electron beam irradiation cross-linked cable material, and then the polyolefin cable material is extruded and coated on the conductive core of the wire and cable, and then in The power and energy are respectively 10KW and 10MeV electron beam irradiation crosslinking, and the irradiation dose is 160KGy.

[0027] In order to further verify the performance of the flame retardant synergis...

Embodiment 3

[0031] Weigh 55 parts of ethylene-vinyl acetate copolymer, 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, and 5 parts of red phosphorus in parts by weight, mix in an internal mixer at 140°C for 10 minutes, and then add hydroxyl 20 parts of ferric stannate microencapsulated magnesium hydroxide and 20 parts of microencapsulated aluminum hydroxide of ferric stannate, 5 parts of triallyl isocyanurate, 0.05 part of antioxidant 300, and 0.05 part of antioxidant DLTP 0.05 parts, after mixing the components of the raw materials evenly, extruding and granulating at 160°C to form electron beam irradiation cross-linked cable material, and then extruding the polyolefin cable material to coat the conductive core of the wire and cable, and then The power and energy are 10KW and 10MeV electron beam irradiation crosslinking respectively, and the irradiation dose is 80KGy.

[0032] In order to further verify the performance of the flame retardant synergist microencapsula...

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Abstract

The invention discloses a low-smoke, halogen-free and flame-retardant irradiation crosslinking polyolefin composite material and a preparation method thereof. The preparation method comprises the following steps of adding 0.5-5 parts of flame retardant synergist to 50-60 parts of polyolefin according to the mass ratio; uniformly mixing at 140-200 DEG C, and then adding 40-50 parts of microencapsulated metal hydroxide of a flame-retardant smoke suppressant synergist, 0.5-5 parts of multifunctional crosslinking agent and 0.1-1 part of antioxidant; extruding and cladding the materials on a conductive core of an electric wire or pressing into a board in a forming machine after evenly mixing; and finally carrying out irradiation crosslinking by a high-power electron beam or a cobalt source in a dosage of 80-240 KGy. The low-smoke, halogen-free and flame-retardant polyolefin composite material obtained by the microencapsulated metal hydroxide of the flame-retardant smoke suppressant synergist by irradiation crosslinking has good flame retardant property, excellent smoke suppressing property, and better mechanical property, and can be widely applied to the electric wires in the industries such as power, energy sources, petrochemical industries, electrons, communication, information, locomotives and the like.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polyolefin materials, in particular to radiation crosslinked low-smoke, halogen-free flame-retardant polyolefin composite materials and a preparation method thereof. Background technique [0002] Cross-linked polyolefin materials have excellent mechanical and physical properties, electrical properties, high service temperature, corrosion resistance, and good heat resistance. They are being increasingly used in the preparation of electricity, energy, petrochemicals, electronics, communications, Wire and cable for information, locomotive and other industries. However, cross-linked polyolefins are easy to burn during use, and the resulting fires bring huge threats and losses to people's lives and property. [0003] In order to solve the flammability problem of cross-linked polyolefin materials, currently the industry mainly adopts adding halogen-containing flame retardants and antimony triox...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/00C08L23/06C08L51/06C08L53/02C08L23/16C08L23/12C08K13/06C08K9/10C08K9/04C08K3/34C08K3/04C08K3/32C08K3/02C08K5/3492C08K5/5313C08K5/523C08K5/57C08K3/22C08J3/28C08J3/24
Inventor 吴瑞影时虎
Owner ANHUI ZONGHENG HI TECH CABLE
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