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A kind of outdoor electrical insulation modified epoxy resin composition

An epoxy resin and electrical insulation technology, which is applied in the field of modified epoxy resin compositions, can solve problems such as the electrical insulation properties of materials not mentioned, achieve enhanced mechanical properties and electrical insulation properties, excellent hydrophobicity, and avoid sheds damage effect

Active Publication Date: 2016-08-31
赛思迈(上海)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN1267063 discloses an epoxy resin composition for high-voltage composite insulators, which uses non-reactive core / shell particles to improve the mechanical properties of the epoxy resin material, but does not mention the electrical insulation properties of the material

Method used

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  • A kind of outdoor electrical insulation modified epoxy resin composition
  • A kind of outdoor electrical insulation modified epoxy resin composition
  • A kind of outdoor electrical insulation modified epoxy resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 (epoxy resin is not modified with silicone)

[0038] Preparation of epoxy resin composition:

[0039] The formula of epoxy resin composition is as follows:

[0040]

[0041] Preparation method: (1) Add 100 parts by mass of bisphenol A epoxy resin to a high-speed disperser, heat to 65°C, and stir for 60 minutes; (2) Add 75 parts by mass of surface-modified alumina to the above-mentioned In the epoxy resin, carry out high-speed dispersion and vacuum degassing treatment, the dispersion time is 3h, and the vacuum degree is 100Pa; (3) 50 mass parts of curing agent methyltetrahydrophthalic anhydride and 3 mass parts of accelerator benzyldimethylamine are carried out Pre-mixing, the mixing temperature is 45°C, the stirring time is 40min, and then 75 parts by mass of surface-modified alumina are added for high-speed dispersion and vacuum degassing treatment, the dispersion time is 2h, and the vacuum degree is 150Pa; (4) Preheat the mold, apply a mold release a...

Embodiment 2

[0042] Embodiment 2 (epoxy resin is modified by organosilicon)

[0043] Preparation of epoxy resin composition:

[0044] The formula of epoxy resin composition is as follows:

[0045]

[0046]

Embodiment 3

[0047] Embodiment 3 (epoxy resin is modified by organosilicon)

[0048] Preparation of epoxy resin composition:

[0049] The formula of epoxy resin composition is as follows:

[0050]

[0051] Preparation method: (1) Add 100 parts by mass of bisphenol A epoxy resin prepolymer modified by amino-terminated polydimethylsiloxane into a high-speed disperser, heat the system to 85°C, and stir The time is 30min, so that the two are fully mixed evenly; (2) 75 parts by mass of surface-modified alumina are added to the above-mentioned epoxy resin, and high-speed dispersion and vacuum degassing are carried out. The dispersion time is 6h, and the vacuum degree 200Pa; (3) Premix 50 parts by mass of curing agent methyltetrahydrophthalic anhydride and 3 parts by mass of accelerator benzyldimethylamine, the mixing temperature is 55 ° C, the stirring time is 20min, and then add 75 parts by mass through the surface The modified alumina is subjected to high-speed dispersion and vacuum degassi...

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Abstract

The invention discloses an outdoor electrical insulation modified epoxy resin composition, which comprises epoxy resin, curing agent, curing accelerator and inorganic filler. The outdoor electrical insulation modified epoxy resin composition has excellent properties such as high weather resistance, excellent hydrophobicity, high volume resistivity, high resistance to tracking, high arc resistance, and low thermal expansion, and can be used to make AC transmission Compared with silicone rubber sheds, sheds for suspension insulators, crossarms and other outdoor insulation parts for lines can prevent bird pecks, resist trampling on inspection lines, and avoid transportation damage.

Description

【Technical field】 [0001] The invention relates to an epoxy resin composition, in particular to a modified epoxy resin composition used for insulator materials. 【Background technique】 [0002] Traditional insulator materials made of ceramics and glass are not only heavy, but also easy to damage; while silicone rubber insulator materials have poor rigidity, and are easily damaged by birds in areas where bird damage is frequent, and are easily damaged during line maintenance. Can not be stepped on, and because of the low hardness and low strength of the silicone rubber material, it is easy to cause damage during the assembly process, especially in the high voltage level, because the length of the insulator is long, it is easy to cause damage to the partial umbrella, resulting in product scrapping . In plateau areas, silicone rubber insulators also need to prevent birds from pecking during line assembly. Compared with silicone rubber insulator materials, epoxy resin insulator ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K9/06C08K7/18C08G59/14
Inventor 尹立杨威张翀张卓陈新
Owner 赛思迈(上海)新材料科技有限公司
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