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Composite insulator umbrella skirt material and preparation method thereof

A technology of composite insulators and umbrella sheds, which is applied in the field of electrical insulation materials, can solve the problems of low strength, pollution flashover resistance, poor wet flashover ability, easily damaged ceramic/glass insulators without hydrophobicity and hydrophobic migration, and achieve improved Good electrical properties, good interface bonding, and improved storage stability

Pending Publication Date: 2021-02-12
XIANGYANG GUOWANG COMPOSITE INSULATORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects that the existing silicone rubber composite insulating silicone rubber sheds have low strength, are easily damaged, and ceramic / glass insulators have no hydrophobicity and hydrophobic migration, and poor pollution flashover and wet flashover capabilities , to provide a high-toughness composite insulator shed material with both advantages, hydrophobicity and hydrophobicity migration

Method used

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  • Composite insulator umbrella skirt material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] The invention provides a high-tough composite insulator shed material with hydrophobicity and hydrophobic mobility, including the following components and their quality: 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester (epoxy resin) 100g, hexahydrophthalic anhydride (curing agent) 90g, dimethylbenzylamine (accelerator) 0.5g, 2,4-diisocyanate (diisocyanate) 3g, siloxane coupling agent (coupling agent ) 4g, methyl silicone oil 20g, hydrogen-containing silicone oil 15g, aluminum hydroxide micropowder 120g, silicon micropowder 60g, silicone rubber powder 20g.

[0037] The preparation method is as follows:

[0038] (1) Take 100g of 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester, then add 3g of 2,4-diisocyanate, use a heater to heat up to 50°C at 2000 rpm Stir at high speed, reduce the speed of the agitator to 600 rpm after the temperature rises to 70°C, and stir at a controlled temperature of 80°C for 1 hour;

[0039] (2) Continue to add 20g of meth...

Embodiment 2

[0047] The invention provides a high-tough composite insulator shed material with hydrophobicity and hydrophobic mobility, which includes the following components and their quality: 100g of tetraglycidyl diaminodiphenylmethane (epoxy resin), methyl inner Methyltetrahydrophthalic anhydride (curing agent) 100g, 2,4,6-tris(dimethylaminomethyl)phenol (accelerator) 0.7g, 2,4-diphenylmethane diisocyanate (diisocyanate ) 4g, hexamethyldisilazane (coupling agent) 4g, methyl silicone oil 30g, hydrogen-containing silicone oil 10g, aluminum hydroxide micropowder 140g, silicon micropowder 40g, silicone rubber powder 10g.

[0048] The preparation method is as follows:

[0049] (1) Take 100g of tetraglycidyl diaminodiphenylmethane, then add 4g of 2,4-diphenylmethane diisocyanate, use a heater to heat up to 50°C and stir at a high speed of 2500 rpm, and the temperature rises to 70 After ℃, reduce the speed of the stirrer to 800 rpm, and stir at a controlled temperature of 65 ℃ for 1.2 hours...

Embodiment 3

[0058] The invention provides a high-tough composite insulator shed material with hydrophobicity and hydrophobic mobility, which includes the following components and their quality: 100g of methyl 3,4-epoxycyclohexanecarboxylate (epoxy resin), Methyltetrahydrophthalic anhydride (curing agent) 87g, 2-methylimidazole (accelerator) 0.5g, triethanolamine (accelerator) 0.3g, 2,4-diisocyanate (diisocyanate) 3g, silicon oxide Alkane coupling agent (coupling agent) 3.5g, methyl silicone oil 30g, hydrogen-containing silicone oil 10g, aluminum hydroxide micropowder 100g, silicon micropowder 80g, silicone rubber powder 10g.

[0059] The preparation method is as follows:

[0060] (1) Add 3g of 2,4-diisocyanate to 100g of methyl 3,4-epoxycyclohexanecarboxylate, use a heater to heat up to 55°C and stir at a high speed of 2000 rpm, after the temperature rises to 65°C Reduce the speed of the stirrer to 600 rpm, and stir at a controlled temperature of 65°C for 1 hour;

[0061] (2) Continue t...

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Abstract

The invention discloses a composite insulator umbrella skirt material and a preparation method thereof. The composite insulator umbrella skirt material is prepared from the following raw materials inparts by weight: 25-40 parts of epoxy resin, 0.2-1.6 parts of diisocyanate, 10-20 parts of polysiloxane, 0.4-1.2 parts of a silane coupling agent, 20-40 parts of a curing agent, 0.1-0.5 part of an accelerant, 30-60 parts of an inorganic filler and 1-8 parts of a toughening filler. According to the invention, silicon-containing modification is carried out on the material, and the inorganic filler such as aluminum hydroxide micro powder and the toughening filler are adopted, so that the modified epoxy resin material has excellent mechanical properties of epoxy resin and hydrophobic property andhydrophobic mobility of silicone rubber at the same time, and meets the operation safety requirements of a composite insulator in a heavily-polluted environment; when the material is applied to composite insulator products, the safety factor of the products can be improved, the probability that the silicone rubber composite insulator is damaged by external force is greatly reduced, and power system operation safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of electrical insulating materials, in particular to shed materials of composite insulators used in the electric power industry. Background technique [0002] With the rapid development of my country's economy, the demand for electricity load is increasing day by day, and the requirements for power supply reliability, energy saving and power quality are also getting higher and higher. The safe and stable operation of the power grid is facing new challenges. Power grid operation experience shows that there are certain problems in the operation of the three types of line insulators, porcelain, glass and composite insulators. Among them, the silicone rubber composite insulator has excellent anti-pollution flashover performance and tensile performance, but because the silicone rubber shed material itself The mechanical tearing strength is about 4-5 MPa, and the Shore hardness is about 60-70. Therefore, in the op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L83/04C08L83/05C08K13/06C08K9/06C08K3/22C08K3/36C08K3/26
CPCC08L63/00C08L2205/035C08L2205/025C08L2203/20C08L2201/08C08K2003/2227C08K2003/265C08K2201/003C08L83/04C08K13/06C08K9/06C08K3/22C08K3/36C08K3/26
Inventor 吴兆峰王锋张力甘银银张传琦
Owner XIANGYANG GUOWANG COMPOSITE INSULATORS
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