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Novel high-pressure-resistant insulating supporting rod material and preparation method thereof

An insulating support, high voltage resistant technology, applied in organic insulators, plastic/resin/wax insulators, etc., can solve the problems of fragile, unreasonable design of process parameters, controlled by others, etc.

Inactive Publication Date: 2014-02-19
KUNSHAN FENFA INSULATING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional supporting parts are cast epoxy resin pot insulators. Due to the poor mechanical strength of the pot insulators, they are easily broken during transportation. Therefore, composite high-voltage insulating support rod structures have been gradually adopted internationally.
However, the insulating parts of the high-voltage insulating support rod structure have strict requirements on mechanical strength, electrical insulation strength, etc.
[0003] At present, most of the demand for high-performance high-voltage insulating support rod materials in the domestic market depends on imports, and imported products are not only expensive, but also often subject to restrictions.
Although some domestic companies have produced high-voltage insulating support rod materials that are intended to replace imported products, due to improper preparation methods and unreasonable design of process parameters, they can only meet the requirements of electrical insulation performance. There is still a big gap between imported products and other mechanical properties

Method used

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  • Novel high-pressure-resistant insulating supporting rod material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The specific preparation method is as follows:

[0018] a) To prepare the resin matrix, the specific preparation process is as follows: first, stir 62% CTD-128 epoxy resin and 15% polyamide resin toughening agent at a temperature of 55°C to prepare the mixture of Group A; then cure 22% The liquid acid anhydride and 1% accelerator calcium acetylacetonate were stirred evenly at 55°C to prepare the mixture of group B; finally, the mixture of group A and group B were uniformly mixed at 55°C to prepare the resin matrix.

[0019] b) Molding process, use the injection machine to inject the resin matrix prepared in step a) into the special resin transfer molding mold by low-speed injection, the injection temperature is 30 °C, the injection pressure is 1.0 MPa, and the injection time is 15 minutes; Then inject it into a special resin transfer molding tool by high-speed injection, the injection temperature is 30°C, the injection pressure is 1.0MPa, and the injection time is 20min...

Embodiment 2

[0023] The specific preparation method is as follows:

[0024] a) To prepare the resin matrix, the specific preparation process is as follows: First, stir 65% CTD-128 epoxy resin and 8% polyamide resin toughener at 65°C to prepare the mixture of Group A; then cure 25% Liquid acid anhydride and 2% accelerator calcium acetylacetonate were stirred evenly at 65°C to prepare the mixture of group B; finally, the mixture of group A and group B were uniformly mixed at 65°C to prepare the resin matrix.

[0025] b) Molding process, use the injection machine to inject the resin matrix prepared in step a) into the special resin transfer molding mold by low-speed injection, the injection temperature is 50°C, the injection pressure is 3.5MPa, and the injection time is 25min; Then inject it into a special resin transfer molding tool by high-speed injection, the injection temperature is 50°C, the injection pressure is 3.5MPa, and the injection time is 30min.

[0026] c) Curing treatment, the...

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Abstract

The invention discloses a novel high-pressure-resistant insulating supporting rod material and a preparation method thereof. The insulating supporting rod material is prepared through compounding epoxy resin, a curing agent, a toughening agent and an accelerant, wherein the epoxy resin is epoxy resin CTD-128, the curing agent is liquid acid anhydride, the toughening agent is polyamide resin, and the accelerant is calcium acetylacetonate. The preparation method comprises the following steps: (a) preparing a resin base body; (b) molding; and (c) curing. According to the novel high-pressure-resistant insulating supporting rod material and the preparation method thereof, disclosed by the invention, the insulating supporting rod material is prepared by adopting a resin transfer molding process, so that the preparation method is simple and reliable, the electrical insulating properties are excellent, the mechanical properties are higher than those of imported products, and the material disclosed by the invention can completely substitute the imported products.

Description

technical field [0001] The invention relates to an insulating material, in particular to a novel high-voltage-resistant insulating support rod material and a preparation method thereof, belonging to the technical field of insulating materials. Background technique [0002] High-voltage insulating support rods are important components of transformers, which are widely used in high-voltage transformers, circuit breakers and GIS, and mainly play the role of supporting transformer coils. Most of the traditional supporting parts are cast-molded epoxy resin pot insulators. Due to the poor mechanical strength of the pot insulators, they are easily broken during transportation. Therefore, composite high-voltage insulating support rod structures have been gradually adopted internationally. However, the insulating components of the high-voltage insulating support rod structure have strict requirements on mechanical strength and electrical insulation strength. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L77/00C08K5/09C08K5/07C08G59/42B29C45/02B29C45/76H01B3/40
Inventor 周巧芬
Owner KUNSHAN FENFA INSULATING MATERIALS