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High-strength insulating support beam and preparation method thereof

An insulating support and high-strength technology, which is applied in the field of high-strength insulating support beams and its preparation, can solve the problems of tracking resistance, arc resistance, poor flame retardancy, increased weight of insulating boards, and inconvenient transportation, etc., to achieve excellent resistance. Flammability, excellent tracking resistance, and easy transportation

Active Publication Date: 2013-11-27
SICHUAN D&F ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, although the strength of the SMC insulation board increases the mechanical strength, the SMC insulation board is placed on the surface of the steel plate to play an insulating role, which not only increases the cost of production and production, but also increases the weight of the insulation board, which is not convenient for transportation.
[0007] However, some existing insulating boards are made by pressing epoxy glass cloth layers, and this kind of insulating boards have relatively large shortcomings in terms of electrical and mechanical properties. For example, traditional epoxy glass cloth layers are resistant to tracking, The arc resistance and flame retardancy are poor. At the same time, it cannot be used in high-voltage and ultra-high-voltage equipment. At the same time, it can only be made into a plate-like structure. The improvement of mechanical properties can only rely on thickening the epoxy glass cloth layer or increasing the insulation board. quantity

Method used

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  • High-strength insulating support beam and preparation method thereof
  • High-strength insulating support beam and preparation method thereof
  • High-strength insulating support beam and preparation method thereof

Examples

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preparation example Construction

[0065] A high-strength insulating support beam, the preparation method of which comprises the following steps:

[0066] (1) Preparation of flame retardant epoxy resin glue solution: prepare materials according to the above raw materials, first add solvent, flame retardant epoxy resin, curing agent, curing agent accelerator and stir evenly, and the stirring time is 30-60 minutes. Then add organic and inorganic flame retardants, and stir for 1 to 3 hours, take a sample to test the molding time of the glue, and the molding time is between 180 and 600 seconds.

[0067] (2) Preparation of glass cloth prepreg: the glass cloth soaked in the grease glue solution in step (1) is passed through a vertical dipping machine to obtain glass cloth prepreg;

[0068] (3) Compression molding: use a mold to press the glass cloth prepreg into a hot press or a vacuum hot press.

[0069] Further, the step of cutting glass cloth (cutting to the size required for processing) is also included ...

Embodiment 1

[0081] In terms of solid parts by weight of flame-retardant epoxy resin (the following examples are based on parts by weight of solid parts of flame-retardant epoxy resin or ordinary epoxy resin):

[0082] After 100 parts of phosphorus-containing epoxy resin (structural formula (1)), 3 parts of ethylenediamine, 0.01 part of 2-methylimidazole and 50 parts of toluene, stir for 40 minutes and stir evenly, then add organic flame retardant (structural formula (a )) 10 parts, and then stirred for 2 hours, using the knife method to test the molding time of the glue solution was 200s, and the flame retardant epoxy resin glue solution was prepared.

[0083] Glass cloth impregnated with flame-retardant epoxy resin glue is passed through a vertical impregnation machine, and the glass cloth prepreg (semi-cured) sheet is prepared by controlling the extrusion roller speed, line speed, wind temperature and furnace temperature conditions.

[0084] Cut the prepreg into the required size, lay i...

Embodiment 2

[0088] 100 parts of phosphorus-containing epoxy resin (structural formula (2)), 10 parts of 4,4′ diaminodiphenylmethane, 5 parts of 2-ethyl-4-methylimidazole, 80 parts of ethanol, organic phosphorus flame retardant (structural formula (b) 40 copies.

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Abstract

The invention discloses a high-strength insulating support beam and a preparation method thereof. The problem that the existing insulating support beam is low in mechanical strength and poor in electric performance is solved. The insulating support beam comprises a glass cloth layer, wherein the glass cloth layer is immersed with flame-retardant epoxy resin glue solutions or common epoxy resin glue solutions; the flame-retardant epoxy resin glue solutions are glue solutions which are prepared by adding curing agents, curing accelerators, solvents and flame-retardant agents into flame-retardant epoxy resins; and the common epoxy resin glue solutions are glue solutions which are prepared by adding curing agents, curing accelerators, solvents and flame-retardant agents into common epoxy resins. The insulating support beam has the characteristics of high mechanical strength and high electric performance, can be suitable for supporting large-scale and super-huge type electric equipment in an insulating mode, and can be simultaneously suitable for supporting electric facilities with high voltage and extra-high voltage.

Description

technical field [0001] The invention belongs to the field of insulating support beams, and in particular relates to a high-strength insulating support beam and a preparation method thereof. Background technique [0002] Insulating support beams (plates) are widely used in wind power, national grid, frequency conversion cabinets, rail transit and other fields, and are an important part of ensuring electricity safety. [0003] Existing insulating boards are set up as plate-shaped structures, and the improvement of mechanical properties (mainly load-bearing) can only rely on the thickness of thickened insulating boards or increasing the number of insulating boards, which brings trouble to installation and increases cost. [0004] For example, the utility model patent with the application number 201220486913.5 discloses an insulating board for a power transformer, which is arranged on the transformer and includes an insulating board. A layer of insulating layer is arranged on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/04C08K7/14C08G59/40C08G59/50C08G59/62C08G59/42B29C70/42
Inventor 李仕文刘刚廖文军庄严曹华
Owner SICHUAN D&F ELECTRICAL TECH
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