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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 effects of easy installation, low noise and light weight

Active Publication Date: 2012-08-01
BEIJING RAILWAY STAR FORTUNE HIGH TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes an improved type for use on railway vehicles called train wheels used in railways or road transportation systems. Frictional pads have been developed over many years ago but they still require heavy equipment when installed due to their high cost compared to other types such as discs. However, this new design has several advantages including being lighterweight than traditional designs while also reducing wear caused by abrasion between them without adding too much extra weight. Additionally, these improvements make it safer against environmental concerns like mold growth and bacterial contamination.

Problems solved by technology

The technical problem addressed by this patented technology relating to railroad train safety concerns involves reducing wear on equipment caused during use due to high weight and difficulty installation for certain types of clamp systems that hold rails together when they're being worked upon.

Method used

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

Examples

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example 1

[0031] The specific preparation process is as follows: first, according to the mass ratio, mix the components of the buffer layer raw materials in the following table 2 in the internal mixer, 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.

[0032] 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.

[0033] Among them, the mold temperature is 210°C, the holding pressure is 22MPa, the pre-compression exhaust pressure is gradually increased to the holding pressure, the number of exhausts is 5 times, the single pre-compression time is 10s, the exhaust time is 3s, and the hot-pressing holding time is 1...

example 2

[0037] The specific preparation process is as follows: firstly mix the components of the buffer layer bottom material in the following table 3 in the internal mixer according to the mass ratio, 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.

[0038] 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.

[0039] 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-pressing holding...

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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

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Claims

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Application Information

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Owner BEIJING RAILWAY STAR FORTUNE HIGH TECH
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