Radiation cross-linking waterproof flame retardant polyolefin nano-composite material and preparation method thereof

A nano-composite material, polyolefin technology, applied in the field of flame retardant polyolefin materials, can solve the problem of cross-linking polyolefin materials, reducing the flame retardant performance and service life of materials, and cable material mechanics. performance damage and other problems, to achieve good flame retardant properties, excellent mechanical properties, and good processing performance.

Active Publication Date: 2010-12-01
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the intumescent flame retardants flame retardant polyolefins have the following disadvantages: First, their addition amount is still relatively large, their compatibility with the polyolefin matrix is ​​poor, and the damage to the mechanical properties of the cable material is still relatively large. Second, some intumescent flame retardant components have disadvantages such a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 70 parts of ethylene-vinyl acetate copolymer, 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, and 1 part of organically modified montmorillonite according to parts by weight. Mix them in an internal mixer at 140°C for 10 minutes. Then add 16 parts of siloxane microencapsulated ammonium polyphosphate, 5 parts of macromolecular triazine char-forming agent, 4 parts of polyurethane microencapsulated melamine, 1.5 parts of triallyl isocyanurate, and 300 parts of antioxidant 0.4 part, 0.4 part of antioxidant DLTP, after mixing all components of the raw materials uniformly, extrude and granulate into electron beam irradiation cross-linked polyolefin cable material at 140℃, and then extrude and coat the polyolefin cable material On the conductive core of the wire and cable, finally, the power and energy are respectively 10KW and 10MeV electron beam irradiation cross-linking, the irradiation dose is 120KGy.

[0019] The test results show that the e-beam ...

Embodiment 2

[0022] Weigh 70 parts of ethylene-vinyl acetate copolymer, 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, and 5 parts of organically modified montmorillonite according to parts by weight. Mix them in an internal mixer at 160°C for 15 minutes. Then add 16 parts of silicone microencapsulated ammonium polyphosphate, 8 parts of macromolecular triazine char-forming agent, 2.5 parts of triallyl isocyanurate, 0.2 part of antioxidant 300, and antioxidant DLTP 0.5 part; after mixing the ingredients of the raw materials uniformly, they are extruded and granulated at 160°C into 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. The power and energy are 10KW and 10MeV electron beam irradiation crosslinking, and the irradiation dose is 160KGy.

[0023] The test results show that the tensile strength of the electron beam radiation crosslinked water-swellable fl...

Embodiment 3

[0025] Weigh 75 parts of ethylene-vinyl acetate copolymer, 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, and 2 parts of iron-based montmorillonite according to parts by weight. Mix them in an internal mixer at 160°C for 10 minutes, then Add 12 parts of silicone microencapsulated ammonium polyphosphate, 4 parts of polyurethane microencapsulated pentaerythritol, 4 parts of polyurethane microencapsulated melamine, 5 parts of triallyl isocyanurate, 0.5 part of antioxidant 1010, anti-oxidant Oxygen agent DLTP takes 0.5 part; after mixing the ingredients of the raw materials uniformly, they are extruded and pelletized at 160℃ to form 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 Then, the power and energy are 10KW and 10MeV electron beam, and the irradiation dose is 80KGy.

[0026] The test results show that the e-beam radiation cross-linked water-...

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Abstract

The invention discloses a radiation cross-linking waterproof flame retardant polyolefin nano-composite material and a preparation method thereof and is characterized in that 0.5-5 parts of inflaming retardant synergist is added to 75-80 parts of polyolefin according to the mass ratio, mixed fully at 140-200DEG C, then 20-25 parts of nitrogen and phosphorous mixed expandable flame retardant, 0.5-5 parts of multi-functional group cross-linking agent and 0.1-1 part of antioxidant are added, after being fully mixed, a radiation cross-linking material is extruded and granulated, then the material is extruded and coated on a conductor wire core of a wire or a cable, or is pressed into plates in a forming machine, and finally, a high energy electron beam or a cobalt source is used for radiation cross-linking in 80-240KGy; and the prepared cross-linking polyolefin nano-composite material has good flame retardant property, excellent mechanical property, good waterproof property and good processing property, can be widely applied to wires and cables and transmission belts and can be applied as insulation, sealing and mechanical protection layers of electronic components and metal pipelines, and has good application prospect.

Description

Technical field [0001] The invention belongs to the technical field of flame-retardant polyolefin materials, and particularly relates to an irradiation crosslinked water-resistant flame-retardant polyolefin nanocomposite material and a preparation method thereof. Background technique [0002] Cross-linked polyolefin materials have excellent mechanical and physical properties, electrical properties, high use temperature, corrosion resistance, and good heat resistance. They are being used more and more in the preparation of electricity, energy, petrochemical, electronics, communications, Wires and cables in the information, automotive and other industries are widely used in the preparation of mining conveyor belts, as insulation, sealing and mechanical protection layers for electronic components and metal pipelines. However, cross-linked polyolefins are easy to burn, and the resulting fire brings huge threats and losses to people's lives and properties. [0003] In order to solve th...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L51/06C08L23/12C08L23/08C08L23/16C08L53/02C08K9/04C08K9/06C08K3/34C08K3/22C08K3/04C08K3/32C08K9/10C08K5/3492C08J3/24C08J3/28H01B7/282H01B7/295
Inventor 胡源汪碧波宋磊
Owner UNIV OF SCI & TECH OF CHINA
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