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Halogen-free and flame-retardant polyethylene cable material

A technology of flame-retardant cable material and polyethylene, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., to reduce the formation of gaps, excellent flame-retardant effects, and promote the formation of surface carbides

Inactive Publication Date: 2019-07-05
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, among the currently disclosed polyolefin flame retardant technologies, a method that can effectively replace PVC flame retardant cable products has not yet been found.

Method used

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  • Halogen-free and flame-retardant polyethylene cable material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The total weight of polyethylene halogen-free flame retardant cable material is 10 kg, of which low-density polyethylene resin accounts for 78%, phosphate-modified ultra-fine calcium carbonate (average particle size 2.5μm) accounts for 16%, oleic acid amide accounts for 1.5% %, triglycidyl epoxyphenyl silane accounts for 4%, and stearic acid accounts for 0.5%. Mix uniformly in advance in a high mixer according to the above ratio, then plasticize and granulate in an extruder, and then use a flat vulcanizer to mold to obtain a test sample.

Embodiment 2

[0025] The total weight of polyethylene halogen-free flame retardant cable material is 10 kg, of which low-density polyethylene resin accounts for 70%, phosphate-modified ultrafine calcium carbonate (average particle size 1.6 μm) accounts for 22%, and oleic acid amide accounts for 22% %, triglycidyl epoxyphenyl silane accounts for 5%, and stearic acid accounts for 1%. Mix uniformly in advance in a high mixer according to the above ratio, then plasticize and granulate in an extruder, and then use a flat vulcanizer to mold to obtain a test sample.

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Abstract

The invention discloses a halogen-free and flame-retardant polyethylene cable material. The halogen-free and flame-retardant polyethylene cable material comprises 70-80% of polyethylene resin, 12-25%of phosphate ester-modified ultrafine calcium carbonate, 1-2% of oleamide, 2-5% of triglycidyloxyphenyl silane and 0.5-1.0% of stearic acid. All assistants are weighed according to the above formula proportions, and are uniformly mixed in high-speed mixer, and the obtained mixture is granulated by plasticization shaping by using an extruder. The prepared halogen-free and flame-retardant polyethylene cable material has the advantages of low cost, good mechanical properties and outstanding flame retardant performance.

Description

technical field [0001] The invention relates to the technical field of flame retardant cable materials, and more particularly to a polyethylene halogen-free flame retardant cable material. Background technique [0002] Commonly used plastics for wires and cables include polyvinyl chloride, polyethylene, polypropylene and other special plastics. Among them, the largest amount is polyvinyl chloride, which has the advantages of low price, flame retardant, good electrical insulation and corrosion resistance. However, for the soft PVC commonly used in wires and cables, due to the addition of a large amount of flammable plasticizers, such as DOP, the oxygen index of the soft PVC material is greatly reduced, making it a combustible material. The flame retardant technology of soft PVC is generally realized by adding antimony oxide. The halogen-antimony synergistic flame retardant effect is more obvious, but it will generate thick smoke, which is very easy to cause secondary injury ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K9/04C08K3/26C08K5/20C08K5/09C08K5/5435C08K13/06H01B3/44
CPCC08K3/26C08K5/09C08K5/20C08K5/5435C08K9/08C08K13/06C08K2003/265C08K2201/003C08L2201/02C08L2201/22C08L2203/202H01B3/441C08L23/0815
Inventor 匡尹杰向枫周琼花汪红梅龚丽娟
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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