Peroxide pre-crosslinked low smoke zero halogen flame retarding irradiation crosslinking polyolefin composite and preparation method thereof

A technology of cross-linking polyolefin and peroxide, which is applied in the field of flame-retardant polyolefin materials to achieve the effects of good flame-retardant performance, reduced smoke generation, and excellent smoke-suppressing performance

Active Publication Date: 2014-06-18
合肥聚泰安全材料合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to add DCP to polyolefin materials without cross-linking in the extrusion molding process of polyolefin materials (different from the thermocompression molding in the literature), and it cannot affect the processing, molding and irradiation of polyolefin materials As well as the irreversible impact in the p

Method used

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  • Peroxide pre-crosslinked low smoke zero halogen flame retarding irradiation crosslinking polyolefin composite and preparation method thereof
  • Peroxide pre-crosslinked low smoke zero halogen flame retarding irradiation crosslinking polyolefin composite and preparation method thereof
  • Peroxide pre-crosslinked low smoke zero halogen flame retarding irradiation crosslinking polyolefin composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take by weight 35 parts of ethylene-vinyl acetate copolymers, 15 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 aluminum hydroxide, 1.5 parts of trimethylolpropyl trimethacrylate, 0.4 parts of antioxidant 300, and 0.4 parts of antioxidant DLTP. granulated into electron beam irradiation cross-linked polyolefin cable material, and then 100 parts of the polyolefin cable material and 2 parts of DCP masterbatch (wherein the mass ratio of DCP to ethylene-vinyl acetate copolymer is 2:8) at 160 Under the condition of high temperature, it is extruded and coated on the conductive core of the wire and cable, and finally irradiated and cross-linked under the electron beam with power and energy of 10KW and 10MeV respectively, and the radiation dose is 100KGy.

[0027] In order to further verify the comprehensive properties of the low...

Embodiment 2

[0031]Weigh 60 parts of ethylene-vinyl acetate copolymer, 10 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer and 5 parts of zinc aluminate in parts by weight, knead in an internal mixer at 140°C for 10 minutes, then add 5 parts of macromolecular triazine-based char-forming agent, 5 parts of melamine cyanurate, 15 parts of silane microencapsulated ammonium polyphosphate, 0.5 part of triallyl isocyanurate, 0.4 part of antioxidant 300, anti-oxidant Take 0.4 part of the oxygen agent DLTP, mix the components of the raw materials evenly, extrude and granulate at 160°C to form an electron beam irradiation cross-linked cable material, and then 100 parts of the polyolefin cable Material and 5 parts of DTBP masterbatch (the mass ratio of DTBP to ethylene-vinyl acetate copolymer is 1:9) is extruded and coated on the conductive core of the wire and cable under the condition of 160 degrees, and then the power and energy are respectively Irradiation and crosslinking under...

Embodiment 3

[0036] Weigh 55 parts of ethylene-vinyl acetate copolymer, 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, and 4.5 parts of red phosphorus in parts by weight, mix in an internal mixer at 155°C for 10 minutes, and then add hydrogen 20 parts of magnesium oxide and 40 parts of aluminum hydroxide, 0.05 part of antioxidant 300, and 0.05 part of antioxidant DLTP. After mixing the components of the raw materials evenly, extrude and granulate at 160°C to form electron beam irradiation crosslinking Cable material, then 100 parts of the polyolefin cable material and 1 part of double 25 masterbatch (the mass ratio of double 25 to ethylene-vinyl acetate copolymer is 3:7) is extruded and coated on the wire under the condition of 160 degrees On the conductive core of the cable, and then irradiate cross-linking under the electron beam with power and energy of 10KW and 10MeV respectively, and the radiation dose is 180KGy.

[0037] In order to further verify the comprehen...

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Abstract

The invention discloses a peroxide pre-crosslinked low smoke zero halogen flame retarding irradiation crosslinking polyolefin composite and a preparation method thereof. The preparation method comprises steps of adding 0.5-5 parts of antiflaming synergist into 50-70 parts of polyolefin, mixing uniformly, then adding 30-50 parts of fire retardant, 0.5-5 parts of polyfunctional group cross-linking agent and 0.1-1 part of antioxygen, mixing uniformly, then extruding and pelletizing so as to obtain an irradiation crosslinking material, then uniformly mixing 100 parts of irradiation crosslinking material and 1-5 parts of peroxide master batch, extruding and wrapping on the electric lead core of an electric wire, finally, irradiating 60-180KGy dosage with high-power electron beam or cobalt source for crosslinking, wherein the components above are weighed in parts by weight. The low smoke zero halogen flame retarding irradiation crosslinking polyolefin composite prepared through peroxide pre-crosslinking has fast crosslinking speed, high productivity, low energy consumption, and good flame resistance, and also has excellent smoke suppression performance and better mechanical property.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polyolefin materials, and in particular relates to a low-smoke, halogen-free flame-retardant radiation cross-linked polyolefin composite material 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 properties. [0003] Because the halogen-containing flame retardant and antimony trioxide flame retardant system will release a large amount of poisonous and corrosive gases when burni...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L51/06C08L23/12C08L23/08C08L23/16C08L53/02C08K13/06C08K3/34C08K3/04C08K3/32C08K3/38C08K3/24C08K5/14
CPCC08L23/06C08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/03C08L2205/035C08L2312/06C08L51/06C08K13/06C08K9/04C08K3/346C08K2003/2227C08K5/103C08K5/14C08K9/10C08K2003/323C08K5/34928C08K3/24C08K13/02C08K2003/026C08K2003/2224C08K5/34924C08L53/02C08K2003/321
Inventor 吴瑞影时虎
Owner 合肥聚泰安全材料合伙企业(有限合伙)
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