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Preparation method of flame-retardant cable material

A technology for flame-retardant cable materials and preparation steps, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., which can solve the problems of poor carbonization ability and easy burning of cable material matrix resin, and achieve low crystallinity and good compatibility Effect

Inactive Publication Date: 2018-05-22
常州市瑞泰物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a method for preparing a flame-retardant cable material for the defect that the matrix resin of the cable material is easy to burn and has poor carbonization ability during combustion.

Method used

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  • Preparation method of flame-retardant cable material

Examples

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Effect test

example 1

[0026] Mix 400mL of sodium hydroxide solution with a mass fraction of 40% and 80g of aluminum hydroxide, place in a stainless steel pot, heat up to 200°C through a resistance furnace, and cook for 20 minutes to obtain a cooking liquid, which is filtered with a microporous membrane. Remove the solid residue to obtain a sodium aluminate solution; mix the aluminum sulfate solution with a mass fraction of 30% and the above-mentioned sodium aluminate solution in an equal volume ratio, add it to a beaker, heat the beaker in a water bath to 70°C, stir for 10 minutes, and keep warm React for 30 minutes to obtain a reaction product, place the reaction product in a high-speed centrifuge and centrifuge at a speed of 4500r / min for 15 minutes, separate and remove the upper layer to obtain a lower sediment, wash the sediment with water until the washing liquid is neutral, and obtain a supernatant Refined aluminum hydroxide; put ultra-fine aluminum hydroxide in an oven, heat up to 80°C, and d...

example 2

[0028]Mix 450mL of sodium hydroxide solution with a mass fraction of 40% and 85g of aluminum hydroxide, place in a stainless steel pot, heat up to 215°C in a resistance furnace, and cook for 23 minutes to obtain a cooking liquid, which is filtered with a microporous membrane. Remove the solid residue to obtain a sodium aluminate solution; mix the aluminum sulfate solution with a mass fraction of 30% and the above sodium aluminate solution in an equal volume ratio, add it to a beaker, heat the beaker in a water bath to 73°C, stir for 13 minutes, and keep warm React for 33 minutes to obtain a reaction product, place the reaction product in a high-speed centrifuge and centrifuge at a speed of 4650r / min for 17 minutes, separate and remove the upper layer to obtain a lower sediment, wash the sediment with water until the washing liquid is neutral, and obtain a supernatant Refined aluminum hydroxide; put ultra-fine aluminum hydroxide in an oven, heat up to 83°C, and dry for 4.5 hours...

example 3

[0030] Mix 500mL of sodium hydroxide solution with a mass fraction of 40% and 90g of aluminum hydroxide, place in a stainless steel pot, heat up to 230°C through a resistance furnace, and cook for 25min to obtain a cooking liquid, which is filtered with a microporous membrane. Remove the solid residue to obtain a sodium aluminate solution; mix the aluminum sulfate solution with a mass fraction of 30% and the above-mentioned sodium aluminate solution in an equal volume ratio, add it to a beaker, heat the beaker in a water bath to 75°C, stir for 15 minutes, and keep warm React for 35 minutes to obtain the reaction product, place the reaction product in a high-speed centrifuge and centrifuge at a speed of 4800r / min for 20 minutes, separate and remove the supernatant to obtain the lower sediment, wash the sediment with water until the washing liquid is neutral, and obtain a supernatant Refined aluminum hydroxide; put ultra-fine aluminum hydroxide in an oven, heat up to 85°C, and dr...

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Abstract

The invention relates to a cable material and a preparation method thereof, in particular to a method for preparing a flame-retardant cable material. In the present invention, sodium aluminate solution is neutralized with aluminum sulfate and ultra-fine aluminium hydroxide powder is obtained through gel crystallization. After the aluminum hydroxide powder is modified, the modified aluminum hydroxide powder is blended with other synergistic flame-retardant materials and matrix resin, pelleting is carried out and then hot-pressing is carried out to obtain the flame-retardant cable material. Thesurface of the EVA resin is coated by the aluminum hydroxide powder, and as crystal nuclei are continuously generated, a core-shell structured coated type composite powder is finally formed and functions as a flame retardant. Aluminum hydroxide is packed into the matrix resin to construct a carbonized layer, which can not only prevent heat and oxygen from entering, but also prevent small moleculesof flammable gas from escaping. Red phosphorus reacts with free radicals to inhibit production and degradation of free radicals, and polyphosphoric acid can be obtained during the reaction. Polyphosphoric acid can dehydrate and carbonize the flame-retardant materials, and thus make the cable material difficult to burn. When the matrix resin is burnt, the char yield of the matrix resin is high. The flame-retardant cable material disclosed by the invention has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of preparation of flame-retardant cable materials, in particular to a preparation method of flame-retardant cable materials. Background technique [0002] With the rapid development of the economy, wires and cables are widely used in various industries and fields. It is mainly used in the production of power cables, computer, refrigerator, TV, air conditioner and other electronic and electrical equipment, internal and external connecting wires, instrument wires, automobile wires, motor leads, mobile phone and notebook computer wires. Plastics for wire and cable insulation and sheathing are commonly known as cable materials, including rubber, plastic, nylon and other varieties. Except for bare wire products such as steel-cored aluminum stranded wire and electromagnetic wire, almost all wire and cable products require an insulation layer. At present, there are nearly 5,000 wire and cable production enterpris...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K9/04C08K3/22C08K3/02H01B3/44
CPCC08L23/0853C08K2003/026C08K2003/2227C08L2201/02C08L2203/202H01B3/441C08L23/0815C08K9/04C08K3/22C08K3/02
Inventor 徐颜峰何俊欣张淑娴
Owner 常州市瑞泰物资有限公司
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