High-temperature-resistant conductive adhesive for pantograph overall slide plate of high speed train

A high-speed EMU, pantograph technology, applied in conductive adhesives, adhesives, epoxy resin glue, etc., can solve the problems of pantograph catenary accident, temperature rise, separation of carbon strips and aluminum brackets, etc. The effect of improving safety and temperature resistance

Active Publication Date: 2017-03-15
YIXING CITY YIYANG MEXICAN ROOTS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the conductive adhesives used in the market are basically single epoxy conductive adhesives, or modified epoxy conductive adhesives, which can meet the requirements of temperature resistance of 150°C, and the standard requirement of 150°C / 1h shear ≥ 5MPa" EMU carbon skateboard provisional technical conditions TJ / CL 328-2014", but with the increase of current and locomotive running speed, these requirements can no longer meet the use requirements of EMU carbon skateboard
According to the heat energy formula Q=I 2 It can be seen from RT that with the increase of the running time and the increase of the energized current I, the temperature of the adhesive surface of the skateboard increases, which affects the increase of the adhesive resistance R of the skateboard, and the increase of the adhesive resistance R also leads to a constant increase in temperature. The increase will affect the overall shear performance of the carbon skateboard of the EMU. Such a situation may cause the carbon skateboard to encounter a large current during operation, the temperature rises rapidly, and the shear performance of the carbon strip and the aluminum bracket of the skateboard is reduced. There may be separation of carbon bars and aluminum brackets, resulting in pantograph-catenary accidents

Method used

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  • High-temperature-resistant conductive adhesive for pantograph overall slide plate of high speed train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A high-temperature-resistant conductive adhesive for the integral slide plate of the pantograph of a high-speed EMU, the adhesive uses a composition of multifunctional epoxy resin and 2-methyl 4-ethylimidazole as the adhesive, wherein the multifunctional epoxy resin is a single Component modified high temperature resistant epoxy adhesive SL3352 is a mixed resin of four-functional epoxy resin and H-51 three-functional epoxy resin. At the same time, modified amine curing agent G-8402 is used as curing agent, 300 mesh copper powder is used as filler and conductive material, and 50 mesh copper mesh is used as conductive material. When applying, first apply the configured conductive adhesive on the bonding surface of the aluminum bracket, and then place a 50-mesh copper mesh to close and solidify, that is, to form an operational bond in the order of aluminum bracket-conductive adhesive-copper mesh-carbon strip.

Embodiment 2

[0018] On the basis of Example 1, a high-temperature-resistant conductive adhesive for the overall slide plate of the pantograph of a high-speed EMU, the formula of the high-temperature-resistant conductive adhesive is as follows:

[0019] Four-functional epoxy resin: three-functional epoxy resin=100:40 (mass ratio);

[0020] Multifunctional epoxy resin: 2-methyl 4-ethylimidazole=100:2.5 (mass ratio);

[0021] Multifunctional epoxy resin: copper powder = 100:110 (mass ratio);

[0022] Multifunctional epoxy resin: modified amine curing agent=100:20 (mass ratio);

[0023] Apply the prepared conductive adhesive on the bonding surface of the aluminum bracket, and then place a 50-mesh copper mesh to close and solidify, that is, to form an operational bond in the order of aluminum bracket-conductive adhesive-copper mesh-carbon strip.

Embodiment 3

[0025] On the basis of Example 1, a high-temperature-resistant conductive adhesive for the overall slide plate of the pantograph of a high-speed EMU, the formula of the high-temperature-resistant conductive adhesive is as follows:

[0026] Four-functional epoxy resin: three-functional epoxy resin=100:45 (mass ratio);

[0027] Multifunctional epoxy resin: 2-methyl 4-ethylimidazole=100:2 (mass ratio);

[0028] Multifunctional epoxy resin: copper powder = 100: 105 (mass ratio);

[0029] Multifunctional epoxy resin: modified amine curing agent=100:18 (mass ratio);

[0030] Apply the prepared conductive adhesive on the bonding surface of the aluminum bracket, and then place a 50-mesh copper mesh to close and solidify, that is, to form an operational bond in the order of aluminum bracket-conductive adhesive-copper mesh-carbon strip.

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Abstract

The invention discloses high-temperature-resistant conductive adhesive for a pantograph overall slide plate of a high speed train. According to the adhesive, epoxy resin adhesive is adopted as a binder; a modified amine curing agent is used as a curing agent; copper powder and copper wire mesh are used as a filler and a conductive material; and bonding is operated in the order of an aluminium bracket, conductive adhesive, copper wire mesh and carbon strip. The epoxy resin adhesive is a composition of multifunctional epoxy resin and 2-methyl-4-ethylimidazole, and the mass ratio of the multifunctional epoxy resin to 2-methyl-4-ethylimidazole is 100: 2-6. According to the invention, temperature resistance of the conductive adhesive for the existing carbon slide plate of a high speed train is enhanced by an order. The conductive adhesive can meet the standard requirements at the present stage and the usage requirements for operation of the existing carbon slide plate of a high speed train, and provides a better safety guarantee for speeding up operation of future high speed trains.

Description

technical field [0001] The invention belongs to the field of important parts and components of motor train units, and relates to a high-temperature-resistant conductive adhesive for the integral sliding plate of a pantograph of a high-speed train unit. Background technique [0002] With the construction and operation of high-speed railways, the running speed continues to increase, and the energized current during operation continues to increase, which is a strict test for the pantograph slide that conducts electricity and receives current. The running speed has been increased from the original 120km / h to the current 380km / h, and the current of the conductors has been increased to ≥1000A, which requires the carbon slides of the EMUs to be subjected to the current to improve the bonding resistance, temperature resistance and overall shear performance. [0003] At present, the conductive adhesives used in the market are basically single epoxy conductive adhesives, or modified e...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C09J163/00C09J9/02
Inventor杨育森凌跃成
OwnerYIXING CITY YIYANG MEXICAN ROOTS MATERIALS