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Novel heat-conducting flame-retardant polymer insulating material and preparation method thereof

A technology of flame retardant polymer and insulating material, which is applied in the field of new thermally conductive flame retardant polymer insulating material and its preparation, can solve the hidden dangers of safety, does not consider the problems of cable heat conduction, natural environment personal safety hazards, etc., and achieves excellent high temperature resistance performance , The preparation method is simple and the effect of improving the thermal conductivity

Pending Publication Date: 2022-01-28
STATE GRID GRID GANSU ELECTRIC POWER CO QINGYANG POWER SUPPLY CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the halogen-containing flame-retardant polymer insulation materials are burned, they not only produce toxic gases, but also produce a large amount of smoke and corrosive gases, causing great harm to the natural environment and personal safety; therefore, this year, halogen-free flame-retardant polymer insulation The material has been studied in depth
However, these technologies only consider the suppression of the combustion of the polymer itself, and do not consider that the heat accumulation inside the polymer insulation material caused by the heating of the cable is the root cause of the combustion
Therefore, only the outer insulation layer or coating of the cable is flame-retardant, without considering the heat conduction of the cable, resulting in defects in the currently used cable flame-retardant and fire-proof technology, resulting in potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1, take 0.3 grams of alumina nanowires, 0.1 grams of carbon nanotubes, and 0.1 grams of graphite nanosheets respectively, add them to the reaction kettle, add dropwise 4 grams of organic solvents, 0.01 grams of silane coupling agents, 0.01 gram of stearic acid, and stirred (stirring speed is 180 rpm), after the dropwise addition, the solution in the reactor was ultrasonically vibrated for 120 minutes, then heated to 80° C. and reacted for 30 minutes to form a mixed solution of nanomaterials.

[0024] Step 2, add the mixed solution of step 1 to 30 grams of epoxy resin in batches, slowly heat to 45°C and stir for 30 minutes at a stirring speed of 300 rpm, mix well and make nano Epoxy resin solutions of functional fillers.

[0025] Step 3, ultrasonically oscillate the epoxy resin solution containing nano-functional fillers in step 2 for 50 minutes, add 0.3 grams of epoxy resin curing agent, stir and mix thoroughly at room temperature, the stirring speed is 300 rpm, an...

Embodiment 2

[0032] Step 1, take 1 gram of alumina nanowires, 0.5 gram of carbon nanotubes, and 0.5 gram of graphite nanosheets respectively, add them to the reaction kettle, add dropwise 40 grams of organic solvents, 0.04 grams of silane coupling agents, 0.02 gram of stearic acid, and stirred (stirring speed is 180 rpm), after the dropwise addition, the solution in the reactor was ultrasonically oscillated for 120 minutes, then the temperature was raised to 90° C. and reacted for 30 minutes to form a mixed solution of nanomaterials.

[0033] Step 2, add the mixed solution of step 1 into 120 grams of epoxy resin in batches, slowly heat to 65°C and stir for 30 minutes at a stirring speed of 300 rpm, mix well and make nano Epoxy resin solutions of functional fillers.

[0034] Step 3, ultrasonically oscillate the epoxy resin solution containing nano-functional fillers in step 2 for 50 minutes, add 1.2 grams of epoxy resin curing agent, stir and mix thoroughly at room temperature, the stirring...

Embodiment 3

[0036]Step 1, take 0.5 grams of alumina nanowires, 0.5 grams of carbon nanotubes, and 1.0 grams of graphite nanosheets respectively, add them to the reaction kettle, add dropwise 40 grams of organic solvents, 0.08 grams of silane coupling agents, 0.04 gram of stearic acid, and stirred (stirring speed is 180 rpm), after the dropwise addition, the solution in the reactor was ultrasonically vibrated for 120 minutes, then heated to 80° C. and reacted for 30 minutes to form a mixed solution of nanomaterials.

[0037] Step 2, add the mixed solution of step 1 to 200 grams of epoxy resin in batches, slowly heat to 65°C and stir for 30 minutes at a stirring speed of 300 rpm, mix well and make nano Epoxy resin solutions of functional fillers.

[0038] Step 3, ultrasonically oscillate the epoxy resin solution containing nano-functional fillers in step 2 for 90 minutes, add 2.0 grams of epoxy resin curing agent, stir and mix thoroughly at room temperature, the stirring speed is 300 rpm, a...

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PUM

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Abstract

The invention discloses a novel heat-conducting flame-retardant polymer insulating material and a preparation method thereof. The material comprises the following raw materials in parts by weight: 3-15 parts by weight of aluminum oxide nanowires, 1-10 parts by weight of carbon nanotubes, 1-10 parts by weight of graphite nanosheets, 0.1-0.5 part by weight of a silane coupling agent, 0.1-1.5 parts by weight of stearic acid, 50-100 parts by weight of an organic solvent, 300-500 parts by weight of epoxy resin and 3-30 parts by weight of an epoxy resin curing agent. The aluminum oxide nanowires, carbon nanotubes and graphite nanosheets react with the silane coupling agent and stearic acid to form a surface-functionalized modified nano functional filler, then the surface-functionalized modified nano functional filler is compounded with epoxy resin, and the high-thermal-conductivity flame-retardant insulating material is formed through nanoscale dispersion and interface interaction. The surface-functionalized nanowires, nanotubes and nanosheets are used, so that a heat-conducting and high-temperature-resistant nano material can be effectively compounded with an epoxy resin polymer base material, the heat-conducting property and the high-temperature-resistant property of the material are greatly improved, and the flame-retardant and flame-proof purposes are achieved.

Description

technical field [0001] The invention belongs to the field of insulating materials for electrical equipment, in particular to a novel heat-conducting and flame-retardant polymer insulating material and a preparation method thereof. Background technique [0002] Statistics in recent years have shown that fires caused by electrical equipment accidents have accounted for more than 30% of the total fires, and most of electrical equipment accidents are caused by wire and cable problems. This is due to the fact that wires and cables generally use polymers as insulating materials. Due to the flammable and flammable characteristics of polymers, and the high calorific value during the combustion process, it is not easy to extinguish, and the toxic fumes produced will cause secondary disasters such as human life and the environment after a fire occurs. Therefore, the method of adding flame retardants to polymers is often used at home and abroad to endow them with flame retardant proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K3/22C08K3/04C08K9/06
CPCC08K3/22C08K3/041C08K3/046C08K9/06C08K2003/2227C08K2201/011C08L63/00
Inventor 李浩峰于德梅杨欣肖岩秦少波张立臻张武娟董常熠
Owner STATE GRID GRID GANSU ELECTRIC POWER CO QINGYANG POWER SUPPLY CO