Outdoor electric-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, avoid shed damage, and provide excellent electrical properties. performance effect

Active Publication Date: 2014-12-03
赛思迈(上海)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Patent CN1267063 discloses an epoxy resin composition for high-voltage composite insulators, which uses non-reactive core/shell particl

Method used

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  • Outdoor electric-insulation modified epoxy resin composition
  • Outdoor electric-insulation modified epoxy resin composition
  • Outdoor electric-insulation modified epoxy resin composition

Examples

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Comparison scheme
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Example Embodiment

[0037] Example 1 (Epoxy resin is not modified by silicone)

[0038] Preparation of epoxy resin composition:

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

[0040]

[0041] Preparation method: (1) Add 100 parts by mass of bisphenol A epoxy resin to the 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 In the epoxy resin, carry out high-speed dispersion and vacuum degassing treatment, the dispersion time is 3h, the vacuum degree is 100Pa; (3) 50 parts by mass of curing agent methyltetrahydrophthalic anhydride and 3 parts by mass of accelerator benzyldimethylamine Pre-mixing, the mixing temperature is 45℃, the stirring time is 40min, then 75 parts by mass of surface-modified alumina are added, and the high-speed dispersion and vacuum degassing are performed. The dispersion time is 2h and the vacuum degree is 150Pa; (4) Preheat the mold, put a release agent on the cavity, and use the APG p...

Example Embodiment

[0042] Example 2 (epoxy resin modified by silicone)

[0043] Preparation of epoxy resin composition:

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

[0045]

[0046]

Example Embodiment

[0047] Example 3 (epoxy resin modified by silicone)

[0048] Preparation of epoxy resin composition:

[0049] The formula of the 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 to a high-speed disperser, heat the system to 85°C, and stir The time is 30min to mix the two thoroughly; (2) Add 75 parts by mass of the surface-modified alumina to the above epoxy resin, perform high-speed dispersion and vacuum degassing treatment, the dispersion time is 6h, and the degree of vacuum 200Pa; (3) Premix 50 parts by mass of curing agent methyltetrahydrophthalic anhydride and 3 parts by mass of accelerator benzyldimethylamine, mixing temperature at 55°C, stirring time for 20min, and then adding 75 parts by mass to pass through the surface The modified alumina is subjected to high-speed dispersion and vacuum degassing treatment, the dispersion time is 4h,...

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Abstract

The invention discloses an outdoor electric-insulation modified epoxy resin composition which comprises an epoxy resin, a curing agent, a curing accelerator and an inorganic filler. The outdoor electric-insulation modified epoxy resin composition has the advantages of high weather resistance, favorable hydrophobicity, high volume resistivity, high tracking resistance, high arc resistance, low thermal expansivity and the like, and can be used for manufacturing suspension insulators for alternating current transmission lines as well as umbrella skirts of cross arms and other outdoor insulation parts. Compared with the silicon rubber umbrella skirt, the umbrella skirt prepared from the composition can prevent birds from damage, resist line walking trampling, avoid shipping damage and the like.

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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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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