Unlock instant, AI-driven research and patent intelligence for your innovation.

Insulation-layer mold-pressed structural member for extra-high-voltage direct-current power transmission and transformation and preparation method thereof

An ultra-high voltage DC and insulating layer technology, which is applied to the insulating layer, the insulating layer for ultra-high voltage DC power transmission and transformation, the molded structural parts, the molded structural parts and their preparation fields, which can solve the problems such as the difficulty in achieving the bending strength retention rate.

Active Publication Date: 2015-10-21
SICHUAN DONGFANG INSULATING MATERIAL
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Customers of UHV DC power transmission and transformation have also put forward higher requirements, requiring UHV (UHV refers to: voltage is ±800 kV) insulation layer and molded structural parts for power transmission and transformation not only to meet UL94V-0 flame retardant At the same time, it is required to be completely halogen-free. The bending strength retention rate of the products in the prior art in the environment of ±800 kV voltage, 155°C and humidity ≥ 90% is difficult to reach more than 50% at room temperature, and the bending strength at 23°C When it is 450MPa, the mechanical strength at 155°C must be greater than 170MPa, and the tracking resistance performance meets the voltage test of 600V and above
However, in the prior art, there are no reports that can meet the requirements for the use of insulating layers and molded structural parts for UHV DC power transmission and transformation at the same time. Therefore, how to solve the current technical problems has become the goal of relevant researchers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Insulation-layer mold-pressed structural member for extra-high-voltage direct-current power transmission and transformation and preparation method thereof
  • Insulation-layer mold-pressed structural member for extra-high-voltage direct-current power transmission and transformation and preparation method thereof
  • Insulation-layer mold-pressed structural member for extra-high-voltage direct-current power transmission and transformation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0054] At room temperature, add 30 parts of bisphenol A epoxy resin and 15 parts of 9,10-dihydro-9-oxo-10-phosphaphenanthrene-10-oxide modified epoxy resin into the glue tank. After stirring for 2 hours at 70°C, add 8 parts of inorganic flame retardant basic sodium aluminum carbonate, 12 parts of curing agent 4,4-diaminodiphenylmethane, 3 parts of phthalocyanine blue pigment, 32 parts of toluene, and stir 1 After the glue is fully dispersed and uniformly dispersed, add 0.02 parts of the accelerator 2-methylimidazole to adjust the molding time of the glue, take a sample, and test the molding time of the glue with a knife method (180℃ hot plate) for 480 seconds, and the glue will be prepared complete.

Embodiment 1-2

[0056] At room temperature, add 29 parts of bisphenol F epoxy resin and 17 parts of 9,10-dihydro-9-oxo-10-phosphaphenanthrene hydroquinone modified epoxy resin into the glue tank. After stirring for 1 hour at a temperature of ℃, add 10 parts of inorganic flame retardant aluminum hydroxide, 11 parts of curing agent 4,4-diaminodiphenyl sulfone, 1 part of titanium white pigment, 32 parts of ethylene glycol ethyl ether acetate, and stir 0.42 After being fully dispersed, add 0.01 part of the accelerator 2-ethyl-4-methylimidazole to adjust the molding time of the glue, take a sample, and test the molding time of the glue with a knife method (180℃ hot plate) for 510 seconds. The liquid is prepared.

Embodiment 1-3

[0058] At room temperature, add 32 parts of alicyclic epoxy resin and 17 parts of 9,10-dihydro-9-oxo-10-phosphaphenanthroquinone modified epoxy resin into the glue tank. At 125℃ After stirring for 1.5 hours, add 9 parts of inorganic flame retardant hydrotalcite, 10 parts of curing agent m-phenylenediamine, 3 parts of medium chrome yellow pigment, 29 parts of methyl acetate, and stir for 1 hour to make it fully dispersed and uniform, then add 0.02 parts of accelerator, boron trifluoride ethylamine, adjust the molding time of the glue, take a sample, test the molding time of the glue with a knife method (180°C hot plate) for 450 seconds, and the glue is prepared.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an insulation-layer mold-pressed structural member for extra-high-voltage direct-current power transmission and transformation and a preparation method thereof. The insulation-layer mold-pressed structural member for extra-high-voltage direct-current power transmission and transformation is characterized by being a composite material formed by one or more layers of overlapped modified epoxy alkali-free glass fiber-fabric prepreg through hot-press molding. The prepreg is prepared by soaking an alkali-free glass fiber-fabric in a modified epoxy adhesive and then performing pre-baking. The modified epoxy adhesive contains, by weight, 28-32 parts of epoxy resin, 12-17 parts of phosphorus containing resin, 8-12 parts of inorganic flame retardant, 10-12 parts of curing agent, 24-41 parts of solvent, 0.01-0.03 part of accelerant and 1-3 parts of pigment. The composite material is especially suitable for the insulation-layer mold-pressed structural member for extra-high-voltage direct-current power transmission, a high-voltage motor, a power transformer and the like and is excellent in performance and high in practicability.

Description

Technical field [0001] The invention relates to an insulating layer and a molded structural part, in particular to an insulating layer, a molded structural part for UHV DC transmission and transformation and a preparation method thereof. The invention is particularly suitable for applications in the fields of insulation layers, molded structural parts for UHV DC transmission and transformation, as well as high-voltage motors and power transformers. Background technique [0002] With the continuous development of UHV and UHV power grids above 220KV, the voltage level is constantly increasing, and the amplitude of operating overvoltage and power frequency overvoltage is also increasing. Although lightning overvoltage is in various lightning protection Under the restriction of the measures, the hazard has been greatly reduced, but the protection of internal overvoltage is still mainly supported by insulating materials, so the requirements for the performance of related supporting in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L63/00C08L63/02C08L63/04C08L61/14C08K13/04C08K7/14C08K3/26C08K3/22C08K3/24C08K3/34C08J5/24
Inventor 黄洪驰唐安斌杜旻马庆柯刘锋邵亚婷
Owner SICHUAN DONGFANG INSULATING MATERIAL