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Heatproof antifouling superhigh voltage insulation material and preparation method thereof

An insulating material, ultra-high voltage technology, applied in insulators, organic insulators, plastic/resin/wax insulators and other directions, can solve the problem of not being able to improve the anti-pollution flashover performance and heat resistance of insulating materials, and improve thermal decomposition. Temperature and anti-fouling ability, good compatibility, the effect of optimizing electric field distribution

Inactive Publication Date: 2016-03-02
STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these materials cannot improve the anti-pollution flashover performance and heat resistance of insulating materials very well.

Method used

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  • Heatproof antifouling superhigh voltage insulation material and preparation method thereof

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[0038] The present invention also provides a preparation method for the above-mentioned heat-resistant and anti-fouling ultra-high voltage insulating material, comprising the following steps:

[0039] 1) Add 0.1~1 parts by weight of sodium lauryl sulfate to 10~30 parts by weight of distilled water, place in a magnetic stirrer, stir for 15~40 minutes at 20~35°C, and then add 1~5 parts by weight of nano Montmorillonite, stirred in a water bath at 60°C for 3-6 hours, filtered, and dried to obtain surface-modified nano-montmorillonite;

[0040] 2) Add the surface-modified nano-montmorillonite and 100 parts by weight of low-density polyethylene obtained in step 1) to the torque rheometer in sequence, and mix at 140-190°C for 20-25 minutes to obtain low-density polyethylene / Montmorillonite composite material;

[0041] 3) The low-density polyethylene / montmorillonite composite material obtained in step 2), 15-20 parts by weight of fluorosilicone resin, 20-30 parts of polytetrafluor...

Embodiment 1

[0050] A method for preparing a heat-resistant and antifouling ultra-high voltage insulating material, comprising the following steps:

[0051] 1) Add 0.1 part by weight of sodium lauryl sulfate to 10 parts by weight of distilled water, place in a magnetic stirrer, stir for 15 minutes at 20°C, then add 1 part by weight of nano-montmorillonite, and stir in a water bath at 60°C 3h, filter and dry to obtain surface-modified nano-montmorillonite;

[0052] 2) Combine the surface-modified nano-montmorillonite obtained in step 1) with 100 parts by weight and the density is 0.895g / cm 3 , Low-density polyethylene with a melt index of 2.3g / 10min (measured at 190°C / 2.16kg) was sequentially added to the torque rheometer, and mixed at 140°C for 20min to obtain a low-density polyethylene / montmorillonite composite material ;

[0053] 3) The low-density polyethylene / montmorillonite composite material obtained in step 2), 15 parts by weight of fluorosilicone resin, 20 parts by weight of poly...

Embodiment 2

[0057] A method for preparing a heat-resistant and antifouling ultra-high voltage insulating material, comprising the following steps:

[0058] 1) Add 0.3 parts by weight of sodium lauryl sulfate to 15 parts by weight of distilled water, place in a magnetic stirrer, stir at 25°C for 20 minutes, then add 2 parts by weight of nano-montmorillonite, and stir in a water bath at 60°C 3.5h, filter and dry to obtain surface-modified nano-montmorillonite;

[0059] 2) Combine the surface-modified nano-montmorillonite obtained in step 1) with 100 parts by weight of 3 , Low-density polyethylene with a melt index of 3.5g / 10min (measured at 190°C / 2.16kg) was sequentially added to the torque rheometer, and mixed at 150°C for 23min to obtain a low-density polyethylene / montmorillonite composite material ;

[0060] 3) The low-density polyethylene / montmorillonite composite material obtained in step 2), 17 parts by weight of fluorosilicone resin, 22 parts by weight of polytetrafluoroethylene wi...

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Abstract

The invention relates to a heatproof antifouling superhigh voltage insulation material and a preparation method thereof. The material contains the components, by weight, 100 portions of low density polyethylene, 15-20 portions of fluorine silicon resin, 20-30 portions of polytetrafluoroethylene, 5-15 portions of a room temperature vulcanized silicone rubber, 1-5 portions of nano montmorillonite, 0.1-1 portion of sodium dodecyl sulfate, 10-30 portions of distilled water, 5-15 portions of a mixture of nano boron nitride, nano magnesium oxide and nano zinc oxide, 0.8-6 portions of a compatible agent, 1-5 portions of a flame retardant, 0.5-2.5 portions of an antioxidant, and 0.5-5 portions of a crosslinking agent. The heatproof antifouling superhigh voltage insulation material prepared by the invention can effectively restrain space charge accumulation in the cable insulation material, and has the advantages of good mechanical, electrical, thermal and physical properties.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a heat-resistant and anti-pollution ultra-high voltage insulating material and a preparation method thereof. Background technique [0002] In recent years, my country's electric power industry has developed rapidly, the operating voltage level of the power grid system has been continuously improved, and the network scale has gradually expanded. The ultra-high or ultra-high voltage transmission network is the skeleton and core of the smart grid that State Grid is building. The construction of an ultra-high voltage transmission network can greatly improve the transmission capacity of my country's power grid and reduce the loss of long-distance power transmission. However, higher voltage levels and DC transmission poses a major challenge to the safety and reliability of insulating materials widely used in electrical equipment. [0003] High-performance i...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L83/08C08L27/18C08L83/04C08L51/06C08K13/06C08K9/04C08K3/34C08K3/38C08K3/22C08K5/14C08K5/3492C08K5/17H01B3/44
CPCC08L23/06C08K2201/011C08L2201/08C08L2203/20C08L2205/02C08L2205/035C08L2207/066H01B3/441C08L83/08C08L27/18C08L83/04C08L51/06C08K13/06C08K9/04C08K3/346C08K2003/385C08K2003/222C08K2003/2296C08K2003/2227
Inventor 史宏伟韩庆军
Owner STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY
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