Preparation method of novel flame-retardant cable material

A flame-retardant cable, a new type of technology, applied in the direction of plastic/resin/wax insulators, organic insulators, cellulose materials, etc., can solve the problem of pungent odor and smoke generation, deterioration of physical and mechanical properties of materials, low flame retardant efficiency and heat dissipation Stability and other issues, to achieve the effects of excellent machining performance, excellent radiation resistance, and excellent mechanical properties of the finished product

Inactive Publication Date: 2018-08-28
HEFEI DAZHUO ELECTRIC POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flame-retardant cable materials containing red phosphorus will emit a large amount of pungent odor and smoke during the production process and combustion, polluting the environment
In addition, although inorganic flame-retardant materials (boron-based, silicon-based, etc.) have the adv

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of a novel flame-retardant cable material, comprising the following preparation steps:

[0024] a. Introduce thermoplastic polyurethane elastomer, styrene-based elastomer, modified nanocrystalline cellulose and modified magnesium hydroxide into the internal mixer, heat up to 420°C, stir and banbury at a speed of 100r / min for 30min, Get material one;

[0025] b. Mix material 1 with antioxidant, lubricant, halogen-free intumescent flame retardant, plasticizer and deionized water into the mixer, oscillate and disperse under ultrasonic waves for 15 minutes, and then heat at 70°C Stir for 40min to obtain material 2;

[0026] c. Add expanded graphite, magnesium stearate, defoamer and maleic anhydride graft compatibilizer to material 2 and mix them, then introduce them into a twin-screw extruder at a temperature of 190°C and a speed of 130r / min, and extrude The time is 20 minutes, extruding and granulating to obtain material 3;

[0027] d. Put material ...

Embodiment 2

[0036] A preparation method of a novel flame-retardant cable material, comprising the following preparation steps:

[0037] a. Introduce thermoplastic polyurethane elastomer, styrene-based elastomer, modified nanocrystalline cellulose and modified magnesium hydroxide into the internal mixer, heat up to 350°C, stir and banbury at a speed of 100r / min for 30min, Get material one;

[0038] b. Mix material 1 with antioxidant, lubricant, halogen-free intumescent flame retardant, plasticizer and deionized water into the mixer, oscillate and disperse under ultrasonic waves for 15 minutes, and then heat at 60°C Stir for 40min to obtain material 2;

[0039] c. Add expanded graphite, magnesium stearate, defoamer and maleic anhydride graft compatibilizer to material 2, mix them, and introduce them into a twin-screw extruder at a temperature of 160°C and a speed of 80r / min, and extrude The time is 25 minutes, extruding and granulating to obtain material 3;

[0040] d. Put material 3 in ...

Embodiment 3

[0049] A preparation method of a novel flame-retardant cable material, comprising the following preparation steps:

[0050] a. Introduce thermoplastic polyurethane elastomer, styrene-based elastomer, modified nanocrystalline cellulose and modified magnesium hydroxide into the internal mixer, raise the temperature to 420°C, stir and banbury at a speed of 120r / min for 50min, Get material one;

[0051] b. Mix material 1 with antioxidant, lubricant, halogen-free intumescent flame retardant, plasticizer and deionized water into the mixer, oscillate and disperse under ultrasonic waves for 25 minutes, and then heat at 70°C Stir for 60 minutes to obtain material 2;

[0052] c. Add expanded graphite, magnesium stearate, defoamer and maleic anhydride graft compatibilizer to material 2 and mix them, then introduce them into a twin-screw extruder at a temperature of 190°C and a speed of 130r / min, and extrude The time is 35 minutes, extruding and granulating to obtain material 3;

[005...

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PUM

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Abstract

The invention provides a preparation method of a novel flame-retardant cable material. The preparation method comprises the following steps: a, mixing and smelting a thermoplastic polyurethane elastomer, a styrene elastomer, modified nanocrystal cellulose and modified magnesium hydroxide to obtain a material I; b, mixing the material I with an antioxidant, a lubricating agent, a halogen-free intumescent flame retardant, a plasticizer and deionized water, carrying out dispersion treatment, and then heating and stirring to obtain a material II; c, adding and mixing expanded graphite, magnesium stearate, a defoaming agent and a maleic anhydride stem grafting compatilizer into the material II, guiding the mixture into a double screw extrusion machine, and carrying out extrusion pelletization to obtain a material III; and d, drying the material III, and processing and forming the novel flame-retardant cable material. The preparation method provided by the invention is simple, low in cost and excellent in material flame retardant property, and has the advantages of excellent performance such as radiation resistance and insulation performance and excellent mechanical property and machining property.

Description

technical field [0001] The invention belongs to the technical field of electric power materials, and in particular relates to a preparation method of a novel flame-retardant cable material. Background technique [0002] Wires and cables have been used in the transmission of various electrical energy and signals for many years. Due to their light weight, excellent electrical insulation and easy molding, polymer materials have become the first choice for wire and cable materials. Traditional PVC cable materials, because they contain chlorine elements, have very good flame retardancy and are widely used in wire and cable materials. However, when it burns, it generates a large amount of toxic gas and smoke, which seriously endangers people's lives and property safety. The hydrogen chloride gas released when the PVC cable material is burned can also cause corrosion to the equipment, thereby causing "secondary pollution". [0003] Chinese Patent Publication No. CN1557867A, halog...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L53/02C08L1/04C08L91/00C08L91/06C08K13/06C08K9/06C08K3/22C08K7/24C08K5/098C08K5/09C08K5/20H01B3/30H01B3/44H01B3/18
CPCC08L75/04C08L1/04C08L53/025C08L2201/02C08L2201/08C08L2203/202C08L2205/035C08L2207/04H01B3/185H01B3/302H01B3/442C08L91/00C08L91/06C08K13/06C08K9/06C08K3/22C08K7/24C08K5/098C08K5/09C08K5/20
Inventor 杨自芬
Owner HEFEI DAZHUO ELECTRIC POWER CO LTD
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