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Low-smoke halogen-free high-strength polyolefin cable material and preparing method

A polyolefin cable material, high-strength technology, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve problems such as threatening the health of fire victims, hindering rescue work, limiting service life and safety, etc., to achieve Good mechanical and physical properties, outstanding mechanical properties and long service life

Active Publication Date: 2016-04-13
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the cable materials used in my country are still mainly polyvinyl chloride. However, the toxic gas produced by halogen-containing cables in the event of a fire seriously threatens the health of fire victims and also hinders rescue work.
At the same time, the insufficient strength of existing cable insulation materials also limits its service life and safety

Method used

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  • Low-smoke halogen-free high-strength polyolefin cable material and preparing method
  • Low-smoke halogen-free high-strength polyolefin cable material and preparing method
  • Low-smoke halogen-free high-strength polyolefin cable material and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weighing: Weigh 10 parts of the basic flame retardant with the ratio of calcium hydroxide: aluminum hydroxide: antimony trioxide = 4:2:1, and the synergistic flame retardant with silicone: zinc borate: pentaerythritol = Weigh 6 parts at a ratio of 1:1:1, blend them in a high-speed mixer at 1800r / min for 10 minutes, and put the evenly mixed composite flame retardant in a constant temperature oven at 120°C to dry for 36 hours;

[0026] (2) Modification of composite basic flame retardant: put 10 parts of dry composite basic flame retardant, 3 parts of silane coupling agent, and 6 parts of absolute ethanol into a special reaction kettle, ultrasonically treat for 4 hours, and wait for the ethanol to volatilize Completely, take out the modified composite basic flame retardant and put it in a constant temperature oven at 110°C to dry for 36 hours, and set aside;

[0027] (3) Modification of composite synergistic flame retardant: Put 6 parts of dry composite synergistic fla...

Embodiment 2

[0033] (1) Weighing: The basic flame retardant is weighed in the ratio of calcium hydroxide: aluminum hydroxide: antimony trioxide = 4:2:1, and the synergistic flame retardant is silicone: zinc borate: pentaerythritol = Weigh 8 parts at a ratio of 1:1:1, blend them in a high-speed mixer at 1800r / min for 10 minutes, and put the evenly mixed composite flame retardant in a constant temperature oven at 120°C to dry for 36 hours;

[0034] (2) Modification of composite basic flame retardant: put 15 parts of dry composite basic flame retardant, 2 parts of silane coupling agent, and 6 parts of absolute ethanol into a special reaction kettle, ultrasonically treat for 4 hours, and wait for the ethanol to volatilize Completely, take out the modified composite basic flame retardant and put it in a constant temperature oven at 110°C to dry for 36 hours, and set aside;

[0035] (3) Modification of composite synergistic flame retardant: put 8 parts of dry composite synergistic flame retardan...

Embodiment 3

[0041] (1) Weighing: Weigh 20 parts of the basic flame retardant with the ratio of calcium hydroxide: aluminum hydroxide: antimony trioxide = 4:2:1, and the synergistic flame retardant with silicone: zinc borate: pentaerythritol = Weigh 10 parts at a ratio of 1:1:1, blend them in a high-speed mixer at 1800r / min for 10 minutes, and put the evenly mixed composite flame retardant in a constant temperature oven at 120°C to dry for 36 hours;

[0042] (2) Modification of composite basic flame retardant: put 20 parts of dry composite basic flame retardant, 2 parts of silane coupling agent, and 6 parts of absolute ethanol into a special reaction kettle, ultrasonically treat for 4 hours, and wait for the ethanol to volatilize Completely, take out the modified composite basic flame retardant and put it in a constant temperature oven at 110°C to dry for 36 hours, and set aside;

[0043] (3) Modification of composite synergistic flame retardant: Put 10 parts of dry composite synergistic f...

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Abstract

The invention discloses a low-smoke halogen-free high-strength polyolefin cable material and a preparing method. The cable material is prepared by mixing, by mass, 50-80 parts of ethylene-vinyl acetate (EVA), 10-20 parts of modified composite basic fire retardant, 5-10 parts of modified composite synergistic-effect fire retardant, 1-3 parts of a composite lubricating agent, 5-10 parts of a compatibilizer, 1-5 parts of a coupling agent, 1-3 parts of a composite crosslinking agent and 1-3 parts of an antioxidant and then melting, blending and extruding the raw materials through a tri-screw extruder. The coupling agent is used for modifying the fire retardant through a special process, maleic anhydride is added to be grafted to ethylene-vinyl acetate (EVA), compatibility of resin and the fire retardant is improved, and the composite material which is prominent in mechanical property, high in flame retardant rating and excellent in electrical property and is used for middle-low voltage cables is obtained.

Description

technical field [0001] The invention relates to a polyolefin cable material for halogen-free high-strength cables, in particular to an ethylene-vinyl acetate (EVA)-based low-smoke, halogen-free medium and low-voltage cable material and a preparation method thereof. Background technique [0002] At present, the cable materials used in my country are still mainly polyvinyl chloride. However, the toxic gas produced by halogen-containing cables in the event of a fire seriously threatens the health of fire victims and also hinders rescue work. At the same time, the insufficient strength of existing cable insulation materials also limits its service life and safety. Therefore, low-smoke, halogen-free and high-strength cable materials will surely usher in development opportunities. [0003] The molecular chain of EVA is a linear saturated structure, so it has good heat aging resistance, weather resistance, and ozone resistance. The maximum long-term working temperature of cross-li...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L91/06C08L51/06C08K13/06C08K9/06C08K3/22C08K3/38C08K5/053H01B3/44
CPCC08K2201/003C08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/035H01B3/441C08L91/06C08L51/06C08L83/04C08K13/06C08K9/06C08K2003/2206C08K2003/2227C08K3/2279
Inventor 曾广胜
Owner HUNAN UNIV OF TECH
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