Method for preparing macromolecular composite friction material

A technology of composite friction materials and composite materials, which is applied in the field of preparation of polymer composite friction materials, can solve the problems of high noise, heavy weight, cumbersome installation, etc., and achieve the effect of easy installation, light weight and low noise

Active Publication Date: 2014-03-26
BEIJING RAILWAY STAR FORTUNE HIGH TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the friction plates used in the track brakes used in railway marshalling yards are generally cast steel or iron castings, which are heavy and cumbersome to install, especially during the braking process of freight cars, the noise is large, the damage to the wheels is large, and flashing is easy to occur around the wheels , affecting the performance of the track brake

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
  • Method for preparing macromolecular composite friction material
  • Method for preparing macromolecular composite friction material
  • Method for preparing macromolecular composite friction material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] The specific preparation process is as follows: firstly mix the components of the buffer layer raw materials in the following table 2 in the internal mixer according to the mass ratio, the effective temperature of the internal mixing rubber is controlled between 85°C and 115°C, and the internal mixing time is 6 minutes , After banburying, the rubber material is broken into powder below 4mm.

[0033] Then put the friction layer fabric into a high-speed mixer and mix evenly. The maximum mixing temperature is 80°C. The steel back sprayed with adhesive is put into the mould, and then the treated buffer layer and friction layer powder are layered into the hot pressing mould.

[0034] Among them, the mold temperature is 210°C, the holding pressure is 22MPa, the pre-compressing exhaust pressure is gradually increased to the holding pressure, the number of exhausting is 5 times, the single pre-pressing time is 10s, the exhausting time is 3s, and the hot-pressing holding time is...

example 2

[0038] The specific preparation process is as follows: first, according to the mass ratio, the components of the buffer layer bottom material in the following table 3 are mixed in the internal mixer, the effective temperature of the internal mixing rubber is controlled between 95 ° C and 115 ° C, and the internal mixing time is 5 Minutes, after banburying, the rubber material is broken into powder below 5mm.

[0039] Then put the friction layer fabric into a high-speed mixer and mix evenly. The maximum mixing temperature is 75°C. The steel back sprayed with adhesive is put into the mould, and then the treated buffer layer and friction layer powder are layered into the hot pressing mould.

[0040] Among them, the mold temperature is 220 ° C, the holding pressure is 20 MPa, the pre-pressing and exhausting pressure is gradually increased to the holding pressure, the number of exhausting is 5 times, the single pre-pressing time is 10s, the exhausting time is 3s, and the hot-pressi...

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

PropertyMeasurementUnit
compressive strengthaaaaaaaaaa
compressive modulusaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing a macromolecular composite friction material. The friction material consists of a buffer layer and a friction layer, wherein the buffer layer is made of a rubber matrix macromolecular composite material, and the friction layer is made of a resin-based macromolecular composite material. A track brake friction piece made of the friction material is light and easy to install; in the braking process, when the friction piece is in contact with a wheel, the wheel is not damaged, and the noise is low in the braking process; and in the absence of other substances harmful to the environment such as asbestos in components of the friction piece, the friction piece is environment-friendly and does not have pollution.

Description

technical field [0001] The invention relates to the technical field of railway track brakes, in particular to a preparation method of a polymer composite friction material. Background technique [0002] At present, the friction plates used in the track brakes used in railway marshalling yards are generally cast steel or iron castings, which are heavy and cumbersome to install. Especially in the braking process of freight cars, the noise is large, the damage to the wheels is large, and flashing is easy to occur around the wheels. , affecting the performance of track braking. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a polymer composite friction material. The rail brake friction body produced by the friction material is light in weight and easy to install; during the braking process, the contact with the wheel will not cause damage to the wheel and can be manufactured The noise during the running process is s...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/14C08L79/08C08L9/02C08L9/06C08L21/00C08L67/00C08K13/04C08K7/04C08K7/06C08K3/22C08K3/04C08K3/30C08K3/34B29C43/58B32B27/06B32B27/18B32B25/08
Inventor 邹怀森周建华张旭锋霍孟申
Owner BEIJING RAILWAY STAR FORTUNE HIGH TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap