Polyethylene material with high flame resistance

A technology of high-density polyethylene and polyethylene, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., to achieve the effects of low gas corrosion, good compatibility, and low smoke emission

Active Publication Date: 2011-11-23
SHANGHAI BANGZHONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to solve the problem of conflicting flame-retardant properties and mechanical properties of existing polyethylene materials, and to provide a flame-retardant polyethyle

Method used

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  • Polyethylene material with high flame resistance
  • Polyethylene material with high flame resistance
  • Polyethylene material with high flame resistance

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1:

[0019]

[0020]

[0021] Combine high-density polyethylene, ethylene-vinyl acetate copolymer and Mg(OH) 2 When the red phosphorus and surfactant are mixed, add the silane crosslinking agent and mix thoroughly. Add lubricants, antioxidants and dispersants to the blend, enter the extruder at 120°C to 250°C, extrude and granulate, and dry it.

Example Embodiment

[0022] Example 2:

[0023]

[0024] Combine high-density polyethylene, ethylene-vinyl acetate copolymer and Mg(OH) 2 When the red phosphorus and surfactant are mixed, add the silane crosslinking agent and mix thoroughly. Add lubricants, antioxidants and dispersants to the blend, enter the extruder at 120°C to 250°C, extrude and granulate, and dry it.

Example Embodiment

[0025] Example 3:

[0026]

[0027]

[0028] Combine high-density polyethylene, ethylene-vinyl acetate copolymer and Mg(OH) 2 When the red phosphorus and surfactant are mixed, add the silane crosslinking agent and mix thoroughly. Add lubricants, antioxidants and dispersants to the blend, enter the extruder at 120°C to 250°C, extrude and granulate, and dry it.

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Abstract

The invention belongs to the technical field of polyethylene materials and particularly relates to a flame-resistant polyethylene material with a good tensile strength and a high breaking elongation rate and a preparation method thereof. The polyethylene material comprises the following components in parts by mass: 20-40 parts of high density polyethylene (HDPE), 50-100 parts of ethylene-vinyl acetate copolymer (EVA), 40-70 parts of magnesium hydroxide, 5-15 parts of surfactant, 8-20 parts of red phosphorus, 5-20 parts of silicane cross-linking agent, 1-5 parts of lubricant and 1-3 parts of antioxidant. The preparation method provided by the invention comprises the specific steps of: mixing the high density polyethylene and the ethylene-vinyl acetate copolymer with the Mg(OH)2, the red phosphorus and the surfactant and simultaneously adding the silicane cross-linking agent, and fully mixing the mixture; adding the lubricant, the antioxidant, dispersant and the like into the blended materials, and pelleting the blended materials by extruding from an extruder at a temperature of 120-250 DEG C; and drying to obtain the finished product. The polyethylene material prepared by the invention not only has a good flame resistance, but also has good tensile strength and high breaking elongation rate.

Description

technical field [0001] The invention belongs to the technical field of polyethylene materials, and in particular relates to a flame-retardant polyethylene material with excellent tensile strength and elongation at break and a preparation method thereof. Background technique [0002] Polyethylene is an important general-purpose resin with a wide range of uses. Its products can be seen everywhere from wires and cables, sheathing materials, films, pipes, daily necessities, etc., but polyethylene is a flammable material, especially in high-pressure, heat sources, etc. Under certain conditions, its oxygen index is 17.3. When burning, it has a large release rate, high calorific value, fast flame propagation speed, and decomposes to produce carbon monoxide. [0003] Halogenated flame retardants have excellent flame retardant properties and have been widely used. However, when a fire occurs, such halogen-containing flame-retardant materials will produce a large amount of smoke and ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L31/04C08L23/06C08K13/02C08K3/22C08K3/02C08K5/54C08F255/02H01B3/44
Inventor 毕宏海储江顺彭艳华毕宏清程启山欧阳圣欧阳贵郑飞燕肖伏兰汪丽毕宏俊刘童军
Owner SHANGHAI BANGZHONG NEW MATERIAL
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