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Bonding material for abrasive block backboard and friction body of high-speed electrical multiple unit as well as preparation method and application thereof

A high-speed EMU and bonding material technology, applied in the field of materials, can solve problems such as poor affinity performance and low resin content

Pending Publication Date: 2021-05-18
CRRC CHANGZHOU TECH MARK IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The force exerted by the grinder is relatively small, which is one-thousandth of that of the brake shoe. However, the installation method of the grinder is a hook structure. After the grinder is installed, there is a certain movable gap, so the grinder will follow the train during use. Vibration, so the bonding material between the grinding sub-back plate and the friction needs better vibration fatigue performance; at the same time, the grinding sub-material uses a large amount of hard fillers, the resin content is low, and the affinity with the resin is worse, so an immediate Good bonding performance with grinding sub-materials Due to the good bonding performance of the metal back plate, it also has good anti-vibration and fatigue performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the material of the abrasive metal back plate and the friction body of the present embodiment, each component and its weight percentage relative to the total weight of the bonding material are: 20% epoxy resin, 10% polyimide resin, nanometer CaCO 3 30%, barium sulfate 15%, carbon fiber 15%, aramid fiber 5%, carbon black 5%.

[0017] The preparation method is to add the above-mentioned raw materials into the coulter type mixer step by step according to the proportion. After mixing for 20 minutes, the required bonding material can be obtained. The weight ratio is put into the mold cavity in layers, and the pressing is started after putting the metal back plate. The pressing temperature is 140°C, and the pressing pressure is 20MPa, and the grinding wheel with high back plate bonding strength can be obtained.

[0018] The performance of the grinding wheel prepared in this embodiment is tested, and the test method and results are as follows.

[0019] The test was carried...

Embodiment 2

[0021] Each component in the grinding sub-bonding material of the present embodiment and its weight percentage relative to the total weight of the grinding sub-bonding material are: epoxy resin 16.5%, polyimide resin 15%, nanometer SiO 2 27.5%, barium sulfate 15%, carbon fiber 20%, aramid fiber 4%, carbon black 2%.

[0022]The preparation method is to add the above-mentioned raw materials into the coulter type mixer step by step according to the proportion. After mixing for 20 minutes, the required bonding material can be obtained. Put the layer into the mold cavity, put it into the metal back plate and start pressing. The pressing temperature is 150 ° C and the pressing pressure is 10 MPa, so that the grinding wheel with high back plate bonding strength can be obtained.

[0023] The performance of the grinding wheel prepared in this embodiment is tested, and the test method and results are as follows.

[0024] According to the test method of UIC 541-4-2010 "Braking-Braking a...

Embodiment 3

[0026] Each component in the abrasive bonding material of the present embodiment and its weight percentage relative to the total weight of the abrasive bonding material are: epoxy resin 17%, polyimide resin 16%, nanometer CaCO 3 15%, nano-SiO 2 15%, barium sulfate 10%, carbon fiber 10%, aramid fiber 10%, carbon black 7%.

[0027] The preparation method is to add the above-mentioned raw materials into the coulter type mixer step by step according to the proportion. After mixing for 20 minutes, the required bonding material can be obtained. Put the layer into the mold cavity, put it into the metal back plate and start pressing. The pressing temperature is 165 ° C and the pressing pressure is 8 MPa, so that the grinding wheel with high back plate bonding strength can be obtained.

[0028] The performance of the grinding wheel prepared in this embodiment is tested, and the test method and results are as follows.

[0029] The test was carried out according to the test method of U...

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PUM

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Abstract

The invention relates to a bonding material for an electrical multiple unit as well as a preparation method and an application thereof, in particular to a bonding material for an abrasive block backboard and a friction body of a high-speed electrical multiple unit as well as a preparation method and an application thereof, and belongs to the technical field of railway vehicle braking materials. The material provided comprises the following components of, in percentage by weight, 30%-33% of a binder, 22.5%-30% of a flexibilizer, 20%-28% of reinforced fibers and 14%-21.5% of a filler. The bonding material has the beneficial effects that a bonding strength of the backboard of the abrasive block prepared from the bonding material is 65 KN, and is improved by 2.6 times compared with a bonding strength of a backboard of an abrasive block which does not use the bonding material directly.

Description

technical field [0001] The invention relates to an adhesive material for motor vehicles, its preparation method and application, in particular to an adhesive material for grinding sub-back plates and friction bodies of high-speed EMUs, its preparation method and application, and belongs to the field of material technology. Background technique [0002] As one of the components of the tread cleaning device, the grinder is a key component to realize the performance of the tread cleaning device to clean the wheel tread, improve wheel-rail adhesion, and suppress wheel polygons. At present, the grinding sub-structure of the tread cleaning device for EMUs is formed by direct pressing of the back plate and the friction body. Although the back plate has undergone pretreatment processes such as sandblasting and glue coating during pressing, since the back plate is made of metal material, the friction body is composite. Materials, the affinity between the two materials is relatively p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D3/34
CPCB24D3/28B24D3/344
Inventor 冯畅伍安旭王子晨张宇宸吴波
Owner CRRC CHANGZHOU TECH MARK IND CO LTD