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High-performance environment-friendly flame-retardant communication cable sheathing compound and preparation method thereof

A communication cable, a high-performance technology, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., to achieve the effect of broad market application prospects, controllable response, and long service life

Inactive Publication Date: 2018-05-11
NANJING CHUQING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a high-performance environment-friendly flame-retardant communication cable sheathing material and a preparation method thereof to solve the problem of having good processing performance, mechanical properties and excellent flame-retardant effect, free of harmful heavy metals and halogenated hydrocarbons, and meeting the requirements of Problems specific to the usage environment

Method used

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  • High-performance environment-friendly flame-retardant communication cable sheathing compound and preparation method thereof
  • High-performance environment-friendly flame-retardant communication cable sheathing compound and preparation method thereof
  • High-performance environment-friendly flame-retardant communication cable sheathing compound and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: The preparation ratio of each raw material in the high-performance environment-friendly flame-retardant communication cable sheath material

[0023] The raw materials in the high-performance, environment-friendly, flame-retardant communication cable sheathing material were mixed according to the mass fractions described in Table 1, and three groups of high-performance, environment-friendly, flame-retardant communication cable sheathing materials I to III with different mixing ratios were obtained.

[0024] Table 1 High-performance environment-friendly flame-retardant communication cable sheathing materials I-III with different mixing ratios (mass parts)

[0025]

Embodiment 2

[0026] Embodiment 2: the preparation method of high-performance environment-friendly flame-retardant communication cable sheathing material I

[0027] Step 1. Preparation of epoxy-modified polyurethane: Put 30 parts of polyether polyol into the reaction kettle, heat to 120°C for reflux dehydration for 1 hour while stirring, then add 35 parts of toluene diisocyanate when the temperature is lowered to 50°C, and slowly heat up to Stir at 80°C for 4-6 hours to obtain a polyurethane prepolymer; dehydrate 15 parts of diglycidyl tetrahydrophthalate at 80°C for 1-3 hours in vacuum, cool down to 60°C, and then add the Polyurethane prepolymer, 8 parts of 1,4-butanediol, 15 parts of trimethylolpropane, 16 parts of methyl tetrahydrophthalic anhydride and 2,3,6-tris(dimethylaminomethyl ) 1 part of phenol, heated up to 70-90°C, stirred and reacted for 6-8 hours, to obtain the epoxy-modified polyurethane;

[0028] Preparation of active flame retardant: under the protection of nitrogen, add ...

Embodiment 3

[0030] Embodiment 3: the preparation method of high-performance environment-friendly flame-retardant communication cable sheath material II

[0031] Step 1. Preparation of epoxy-modified polyurethane: Put 45 parts of polyether polyol into the reaction kettle, heat to 120°C for reflux dehydration for 1 hour while stirring, then add 55 parts of toluene diisocyanate when the temperature is lowered to 50°C, and slowly heat up to Stir at 80°C for 4-6 hours to obtain a polyurethane prepolymer; dehydrate 25 parts of diglycidyl tetrahydrophthalate at 80°C for 1-3 hours in vacuum, cool down to 60°C, and then add the Polyurethane prepolymer, 12 parts of 1,4-butanediol, 23 parts of trimethylolpropane, 24 parts of methyl tetrahydrophthalic anhydride and 2,3,6-tris(dimethylaminomethyl ) 5 parts of phenol, heated up to 70-90°C, stirred and reacted for 6-8 hours, to obtain the epoxy-modified polyurethane;

[0032] Preparation of active flame retardant: under the protection of nitrogen, add di...

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Abstract

The invention discloses a high-performance environment-friendly flame-retardant communication cable sheathing compound and a preparation method thereof. The high-performance environment-friendly flame-retardant communication cable sheathing compound is prepared from high density polyethylene, epoxy modified polyurethane, an ethylene-magnesium acrylate ionomer, an active flame retardant, an antioxidant, a lubricating agent and an anti-ultraviolet agent. The high-performance environment-friendly flame-retardant communication cable sheathing compound provided by the invention has favorable fillerinclusiveness and crosslinkability by adopting the polyethylene as a main material and adding the epoxy modified polyurethane and the ethylene-magnesium acrylate ionomer for using cooperatively, so that the tensile strength and the elongation are improved; the active flame retardant is introduced to be modified through dimethyldichlorosilane so as to be uniformly and stably dispersed into a reaction system, so that a flame retardant effect of the high-performance environment-friendly flame-retardant communication cable sheathing compound provided by the invention is remarkably improved. The high-performance environment-friendly flame-retardant communication cable sheathing compound provided by the invention does not contain harmful heavy metal and halogenated hydrocarbon, has an excellentflame retardant effect, has electrical performance including low dielectric loss and high dielectric strength, has favorable processability and heat resistance, high strength, and high temperature aging resistance, and can satisfy a specific use environment; the preparation method is simple to operate with a high safety factor.

Description

technical field [0001] The invention relates to the technical field of communication cables, in particular to a high-performance, environment-friendly, flame-retardant communication cable sheath material and a preparation method thereof. Background technique [0002] With the rapid development of my country's communication industry, the demand for communication cables as arteries and blood vessels for signal transmission is also increasing day by day. Among communication cables with various insulation forms, XLPE insulated communication cables are an emerging and booming new army. With the strengthening of people's awareness of environmental protection and the promulgation of environmental regulations, the halogen-free flame-retardant technology of polymer materials with halogen-free and low-smoke characteristics will gradually replace the halogen-free flame-retardant technology. For a long time, the amount of polyvinyl chloride (PVC) in wire and cable materials has account...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L75/08C08L23/08C08K13/06C08K9/06C08K5/5399C08K3/22C08K3/04C08K3/36C08K3/38H01B3/44C08J3/22
CPCC08L23/06C08J3/226C08J2323/06C08J2423/06C08K2003/2227C08L2201/02C08L2201/08C08L2203/202C08L2205/025C08L2205/035C08L2205/04C08L2207/062H01B3/441C08L75/08C08L23/0876C08K13/06C08K9/06C08K5/5399C08K3/22C08K3/04C08K3/36C08K3/38
Inventor 杨丽芳
Owner NANJING CHUQING ELECTRONICS TECH CO LTD
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