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Environmental-friendly halogen-free low-smoke flame retardant material for coaxial cable and preparation method thereof

A coaxial cable, low-smoke and flame-retardant technology, applied in the direction of insulated cables, cables, circuits, etc., to achieve good effect, good environmental performance, and less human stimulation

Inactive Publication Date: 2009-12-23
SUZHOU HENGLI COMM MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems existing in the existing coaxial cable sheath materials, the invention provides an environmentally friendly halogen-free low-smoke flame-retardant material for coaxial cables and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The formula of each component of the material is: ethylene-vinyl acetate copolymer 24 kg, linear low-density polyethylene 20 kg, flame retardant aluminum hydroxide 75 kg, flame retardant magnesium hydroxide 25 kg, compatibilizer ethylene-vinyl acetate 13 kg of copolymer grafted maleic anhydride copolymer, 1 kg of antioxidant triphenyl phosphite, 1 kg of surfactant vinyl tris (β-methoxyethoxy) silane, 1 kg of lubricant zinc stearate Kilogram.

[0010] The preparation method is as follows: first mix the flame retardant aluminum hydroxide in a high-speed mixer until the temperature reaches 80°C, and then use the surfactant vinyl tris (β-methoxyethoxy) silane as a pre-spraying coating after dehydration. processing, then add each component material and stir in a high-speed mixer for 3 minutes to mix all kinds of materials evenly, and then send the mixture into a twin-screw extruder for processing and granulation. The temperature of each section of the screw is: the feeding s...

Embodiment 2

[0012] The formula of each component of the material is: ethylene-vinyl acetate copolymer 45 kg, linear low-density polyethylene 29 kg, flame retardant aluminum hydroxide 115 kg, flame retardant magnesium hydroxide 30 kg, compatibilizer ethylene-vinyl acetate 16 kg of copolymer grafted maleic anhydride copolymer, 1 kg of antioxidant triphenyl phosphite, 2 kg of surfactant vinyl tris (β-methoxyethoxy) silane, 2 kg of lubricant zinc stearate Kilogram.

[0013] The preparation method is as follows: first mix the flame retardant aluminum hydroxide in a high-speed mixer until the temperature reaches 85°C, and then use the surfactant vinyl tris (β-methoxyethoxy) silane as a pre-spraying coating after dehydration. Processing, then add each component material and stir at high speed in a high-speed mixer for 4 minutes to mix all kinds of materials evenly, and then send the mixture into a twin-screw extruder for processing and granulation. The temperature of each section of the screw is...

Embodiment 3

[0015] The formula of each component of the material is: ethylene-vinyl acetate copolymer 114 kg, linear low density polyethylene 38 kg, flame retardant aluminum hydroxide 150 kg, flame retardant magnesium hydroxide 45 kg, compatibilizer ethylene grafted horse 23 kilograms of anhydride copolymers, 3 kilograms of antioxidant triphenyl phosphites, 3 kilograms of surfactant vinyl tris (β-methoxyethoxy) silanes, 4 kilograms of lubricant zinc stearates.

[0016] The preparation method is as follows: first mix the flame retardant aluminum hydroxide in a high-speed mixer until the temperature reaches 90°C, and then use the surfactant vinyl tris (β-methoxyethoxy) silane as a pre-spraying coating after dehydration. Processing, then add each component material and stir in a high-speed mixer for 5 minutes to mix all kinds of materials evenly, and then send the mixture into a twin-screw extruder for processing and granulation. The temperature of each section of the screw is: feeding sectio...

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PUM

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Abstract

The invention relates to an environmental-friendly halogen-free low-smoke flame retardant material for a coaxial cable and a preparation method thereof. The environmental-friendly halogen-free low-smoke flame retardant material comprises the following materials with the content by weight percent: 15 to 30 percent of ethane-vinyl acetate copolymer, 8 to 15 percent of linear low-density polythene, 25 to 60 percent of fire retardant aluminium hydroxide, 10 to 20 percent of fire retardant magnesium hydroxide, 5 to 10 percent of compatilizer ethane-vinyl acetate copolymer graft maleic anhydride copolymer or ethane graft maleic anhydride copolymer, 0.2 to 0.8 percent of antioxygen triphenyl phosphate, 0.4 to 1 percent of surface active agent ethenyl (beta-methoxyl ethyoxyl) trisilane and 0.5 to 1.2 percent of lubricant zinc stearate. The preparation method of the environmental-friendly halogen-free low-smoke flame retardant material comprises the following steps: firstly, mixing the fire retardant aluminium hydroxide at high speed in a high-speed mixing machine till the temperature of the fire retardant aluminium hydroxide achieves 80 to 90 DEG C; using the surface active agent ethenyl (beta-methoxyl ethyoxyl) trisilane to carry out spraying preprocessing after dehydration; adding the materials by weight percent into the high-speed mixing machine to be stirred at high speed for 3 to 5 minutes so that the materials are uniformly mixed; then delivering the mixed materials into a twin-screw extruder to be processed and prilled, wherein the temperature of each section of a screw is as follows: the temperature of a material feeding section is 90 to 110 DEG C, the temperature of a delivering section is 120 to 130 DEG C, the temperature of a plasticizing section is 130 to 140 DEG C, and the temperature of a machine head is 135-145 DEG C; and drying particles after the mixed materials are prilled so as to obtain finished products.

Description

technical field [0001] The invention relates to a cable sheath material and a preparation method thereof, in particular to a coaxial cable sheath material and a preparation method thereof. Background technique [0002] The sheath materials used in existing coaxial cables are generally polyethylene or polyvinyl chloride materials. Polyethylene materials have poor flame retardancy, and halogen-containing polyvinyl chloride materials produce a large amount of toxic smoke when they are burned in a fire. Suffocate people to death, and cause serious pollution to the environment. Contents of the invention [0003] In order to solve the problems existing in the existing coaxial cable sheath materials, the invention provides an environment-friendly halogen-free low-smoke flame-retardant material for coaxial cables and a preparation method thereof. [0004] The environmentally friendly halogen-free low-smoke flame-retardant material for coaxial cables provided by the invention has ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K5/54H01B7/295C08L23/06C08L51/06C08K3/22C08K5/524C08K5/09
Inventor 程晓松孙发财孙兴伟丁国平
Owner SUZHOU HENGLI COMM MATERIAL
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