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Underground mining braking sparkless friction material and preparation method thereof

A friction material, non-sparking technology, used in friction linings, chemical instruments and methods, mechanical equipment, etc., can solve problems such as reduced braking capacity, poor thermal conductivity, and potential safety hazards, achieve and stabilize friction factor, braking The process has no spark and the effect of increasing the pressure resistance

Inactive Publication Date: 2016-11-09
TRIUMPH HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the wet state of the early organic synthetic friction materials, the friction coefficient is greatly reduced, the braking ability is reduced, the thermal conductivity is poor, and the braking temperature is high, which changes the structure and performance of the brake disc material, resulting in thermal cracking. cause safety hazard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) 5%wt of flame-retardant fiber, 3-5mm length of flame-retardant aramid fiber, 25%wt of reinforcing fiber, 2%wt of mixed powder of nano-copper and electrolytic copper, wherein the mass ratio of nano-copper and electrolytic copper is 1 : 1, the size of nano copper is 30-350nm, and the size is 50-200μm flake g-C 3 N 4 10%wt, zirconia 4%wt, silicon carbide 6%wt, nitrile rubber modified phenolic resin and vegetable oil modified phenolic resin mixture 12%wt, magnesium hydroxide 4%wt, barium sulfate 21%wt, friction powder 1 %wt, wollastonite 10%wt ingredients;

[0018] 2) The components described in 1) were filled with argon and mixed at high speed for 20 minutes at a speed of 400 r / min;

[0019] 3) The uniformly mixed powder of 2) is then hot-pressed and sintered. After the temperature is raised to 140°C under a pressure of 15Mpa, the holding time is 25min, and the gas is released 3 times in the first minute.

[0020] 4) Place the sintered sample in 3) in a drying oven ...

Embodiment 2

[0022] 1) 4%wt of flame-retardant fiber, 3-5mm length of flame-retardant polyimide fiber, 20%wt of fiber for reinforcement, 5%wt of mixed powder of nano-copper and electrolytic copper, wherein the mass ratio of nano-copper and electrolytic copper 1:2, the size of nano-copper is 30-350nm, and the size of 50-200μm flake g-C 3 N 4 16%wt, zirconia 2%wt, silicon carbide 4%wt, nitrile rubber modified phenolic resin and boron compound modified phenolic resin mixture 10%wt, magnesium hydroxide 5%wt, barium sulfate 25%wt, friction powder 2%wt, wollastonite 12%wt ingredients;

[0023] 2) The components described in 1) were filled with argon and mixed at high speed for 20 minutes at a speed of 500 r / min;

[0024] 3) The uniformly mixed powder of 2) is then hot-pressed and sintered. After the temperature is raised to 160°C under the pressure of 20Mpa, the holding time is 20min, and the gas is released 3 times in the first minute.

[0025] 4) The sintered sample in 3) was kept in a dry...

Embodiment 3

[0027] 1) According to 9%wt of flame-retardant fiber, 3-5mm length of flame-retardant polytetrafluoroethylene fiber, 15%wt of fiber for reinforcement, 2%wt of mixed powder of nano-copper and electrolytic copper, wherein the mass ratio of nano-copper and electrolytic copper 1:3, the size of nano-copper is 30-350nm, and the size is 50-200μm flake g-C 3 N 4 8%wt, zirconia 5%wt, silicon carbide 5%wt, boron compound modified phenolic resin and vegetable oil modified phenolic resin mixture 15%wt, magnesium hydroxide 2%wt, barium sulfate 28%wt, friction powder 3% wt, wollastonite 8% wt ingredients;

[0028] 2) The components described in 1) were filled with argon and mixed at high speed for 20 minutes at a speed of 600 r / min;

[0029] 3) The uniformly mixed powder of 2) is then hot-pressed and sintered. After the temperature is raised to 180°C under the pressure of 25Mpa, the holding time is 15min, and the gas is released 3 times in the first minute.

[0030] 4) Place the sintere...

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Abstract

The invention provides an underground mining braking sparkless friction material. The underground mining braking sparkless friction material comprises the following components by mass: 1-9 parts of flame retardant fiber, 15-30 parts of reinforcing fiber, 1-8 parts of mixed powder of nano copper and electrolytic copper, 5-16 parts of g-C3N4, 1-6 parts of zirconia, 1-6 parts of silicon carbide, 8-12 parts of a modified resin mixture, 2-5 parts of magnesium hydroxide, 10-28 parts of barium sulfate, 1-3 parts of friction powder, and 8-12 parts of wollastonite. The flame retardant fiber and magnesium hydroxide, wollastonite involved in the friction material play a synergistic flame retardant role together and ensures sparkless braking of the friction material.

Description

technical field [0001] The invention relates to the technical field of mine equipment, in particular to an underground mine brake non-spark friction material and a preparation method thereof. Background technique [0002] Auxiliary transportation is the "artery" and "throat" of mine production. The efficiency and safety of equipment directly affect the efficiency and safety of coal mine production. Once a failure occurs during work, it will directly affect production and even cause personal injury or death. Therefore, the development of auxiliary transportation equipment also puts forward higher requirements for its safety, and the most important component that determines the safety of auxiliary transportation equipment is the brake device, and the brake friction plate is an important factor that determines the braking performance of the brake device. part. There are various types of brakes, which first originated in the United States. The development of brakes in my countr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14F16D69/02
CPCC09K3/149F16D69/028F16D2069/002
Inventor 罗松松陈军陶永芹黄涛张勇杰
Owner TRIUMPH HEAVY IND
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