Train brake pad/brake shoe with stable braking performance and preparation method thereof

A technology for trains and brake pads, applied in the field of train brake pads/brake shoes and their preparation, can solve problems such as weak "instant" stabilization control, and achieve the effects of reducing elastic modulus, improving adhesion properties, and stabilizing friction work.

Active Publication Date: 2015-12-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the problem of weak "instant" stabilization control in the braking process existing in the existing brake pad / brake shoe production technology, and to propose a train brake pad / brake shoe and a brake pad with stable braking performance. Its preparation method mainly utilizes the preferred natural polymer material as an "instant" stabilizing regulator during preparation

Method used

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  • Train brake pad/brake shoe with stable braking performance and preparation method thereof
  • Train brake pad/brake shoe with stable braking performance and preparation method thereof
  • Train brake pad/brake shoe with stable braking performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Train brake pads / brake shoes, consisting of the following components by weight: 10 parts of natural cellulose, 3 parts of magnesium naphthenate, 2 parts of phosphate, 5 parts of powdered nitrile rubber, 5 parts of epoxy, modified phenolic 20 parts of resin, 10 parts of steel fiber, 5 parts of pyrite powder, 15 parts of petroleum coke, 10 parts of mica powder, and 15 parts of barium sulfate.

[0071] The preparation method of the train brake pad / brake shoe is as follows:

[0072]After fully mixing 10 parts of natural cellulose with 3 parts of magnesium naphthenate, 2 parts of sodium pyrophosphate, 5 parts of epoxide and 10 parts of ethanol, add it to a screw extruder granulator for granulation, and place it at room temperature for 4 hours. The produced granules are rolled into 1.5mm thin chips, and dried with hot air at 70°C for half an hour to remove ethanol; the above-mentioned flakes are mixed with 5 parts of powdered nitrile rubber, 20 parts of modified phenolic resi...

Embodiment 2

[0079] The train brake pad / brake shoe is composed of the following components by weight: 10 parts of calcium alginate, 2 parts of magnesium naphthenate, 2 parts of sodium hexametaphosphate, 6 parts of SBS rubber, 6 parts of epoxy, modified phenolic 18 parts of resin, 14 parts of steel fiber, 12 parts of zircon powder, 10 parts of pitch coke, 10 parts of organically modified clay, and 10 parts of barium sulfate.

[0080] The preparation method of the train brake pad / brake shoe is as follows:

[0081] 10 parts of calcium alginate, 2 parts of magnesium naphthenate, 2 parts of sodium hexametaphosphate, 6 parts of epoxide and an appropriate amount of ethanol are fully mixed and then extruded into granules. After standing at room temperature for 8 hours, the granules are rolled into into 1mm thin chips, and dried with hot air at 70°C to remove ethanol; the above flakes, 6 parts of SBS rubber, 18 parts of modified phenolic resin, 14 parts of steel fiber, 12 parts of zircon powder, 10...

Embodiment 3

[0087] The train brake pad / brake shoe is composed of the following components by weight: 6 parts of cellulose, 4 parts of chitosan, 5 parts of chitin, 5 parts of magnesium naphthenate, 3 parts of potassium pyrophosphate, carboxylated nitrile rubber powder 12 parts, 9 parts of epoxy, 24 parts of methylol nylon modified phenolic resin, 10 parts of steel fiber, 7 parts of γ-alumina, 5 parts of nano-reinforced carbon black, and 10 parts of palygorskite powder filler.

[0088] The preparation method of the train brake pad / brake shoe is as follows:

[0089] Fully mix 6 parts of cellulose, 4 parts of chitosan, 5 parts of chitin, 5 parts of magnesium naphthenate, 3 parts of potassium pyrophosphate, 9 parts of epoxide and an appropriate amount of ethanol, then extrude and granulate, and place at room temperature for 8 Hours later, the produced granules were rolled into 1mm thin chips, and dried with hot air at 70°C to remove ethanol; the above thin sheets were mixed with 12 parts of ca...

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Abstract

The invention relates to a train brake pad / brake shoe with stable braking performance and a preparation method thereof. The train brake pad is composed of the following components in parts by weight: 6-18 parts of natural high-polymer regulator, 2-5 parts of naphthenate, 1-3 parts of phosphate, 3-12 parts of powder rubber, 3-9 parts of epoxide, 8-24 parts of modified phenolic resin, 5-15 parts of steel fiber, 5-15 parts of friction regulator, 5-15 parts of carbon material and the balance of filler, totaling 100 parts. Natural high-polymer materials, such as functional materials capable of adjusting and stabilizing braking performance, are utilized. The components become viscous after being heated, can generate chemical action on the base resin and the like, and can possibly permeate into the particle clearances of the friction regulator and inorganic filler so as to fully fill the clearances and have the effect of coercing particles, thereby enhancing the adhesion characteristic and application property of the brake pad / brake shoe onto the friction couple brake disk, stabilizing the friction factor of the brake pad / brake shoe, and improving the wear resistance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a train brake pad / brake shoe with stable braking performance and a preparation method thereof. Background technique [0002] For a long time, the basic braking of trains has been friction braking. When using disc brakes, the braking components are brake pads, and when tread braking is brake shoes. With the popularization of electrified lines, the current train locomotives (whether it is high-speed rail, EMU or high-power freight trains) basically use disc brakes, and the brake replacement parts are brake pads; while the freight vehicles of trains mainly use high friction brakes. brake shoe. Because it is related to personal safety and vehicle and operation safety, the quality requirements for brake pads / brake shoes are very strict. Currently, they need to be certified by CRCC (China Railway Railway Product Certification Center) before they can be loaded a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
Inventor 王海庆
Owner SHANDONG UNIV
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