A friction material for elevator brake pads and its application

A technology of elevator brake pads and friction materials, applied in the field of brake pads, can solve the problems of large thermal expansion coefficient of brake pads, easy wear of brake pads, poor impact performance, etc., achieve high dynamic and static friction coefficients, meet service requirements, and improve flexibility Effect

Active Publication Date: 2019-06-07
SHANDONG GOLD PHOENIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a friction material for elevator brake pads and its application, which overcomes the large thermal expansion coefficient of the brake pads, poor impact performance, and easy wear and tear of the brake pads in the prior art. And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Raw material formula of friction material: 15% phenolic resin, 2% silicone modified resin, 10% rubber-based granules, 4% silicon carbide, 16% precipitated white carbon black, 5% zircon powder, 10% graphite, disulfide Molybdenum 4%, vermiculite 3%, titanium carbide powder 5%, toughening carbon fiber 5%, mineral fiber 10%, brass fiber 10%, phenolic resin toughening agent 1%.

[0043] Elevator brake pad preparation method:

[0044] (1) Put the above-mentioned raw material components into the mixer according to the proportion, mix for 30min, and mix evenly;

[0045] (2) Put the uniformly mixed raw material components in step (1) into the mould, flatten it, then put it into a steel back coated with glue, and use a numerical control hot press machine to perform hot press molding. The loading pressure for hot press molding is 300kg / cm 2 , the hot pressing time is 6 minutes, the temperature of the upper mold of the press is 170°C, the temperature of the middle and lower mold ...

Embodiment 2

[0049] Raw material formula of friction material: 10% phenolic resin, 7% silicone modified resin, 12% rubber-based granules, 4% silicon carbide, 10% precipitated white carbon black, 5% zircon powder, 7% graphite, disulfide Molybdenum 4%, vermiculite 8%, titanium carbide powder 4%, toughening carbon fiber 4%, mineral fiber 12%, brass fiber 8%, phenolic resin toughening agent 5%.

[0050] Preparation method of elevator brake pads:

[0051] (1) Put the above-mentioned raw material components into the mixer according to the proportion, mix for 30min, and mix evenly;

[0052] (2) Put the uniformly mixed raw material components in step (1) into the mould, flatten it, then put it into a steel back coated with glue, and use a numerical control hot press machine to perform hot press molding. The loading pressure for hot press molding is 600kg / cm 2 , the hot pressing time is 4min, the temperature of the upper mold of the press is 140°C, the temperature of the middle and lower mold is ...

Embodiment 3

[0056] Raw material formula of friction material: 7% phenolic resin, 10% silicone modified resin, 9% rubber-based granules, 3% silicon carbide, 30% precipitated white carbon black, 5% zircon powder, 15% graphite, disulfide Molybdenum 3%, vermiculite 2%, titanium carbide powder 2%, toughening carbon fiber 5%, mineral fiber 5%, brass fiber 3.5%, phenolic resin toughening agent 0.5%.

[0057] Preparation method of elevator brake pads:

[0058] (1) Put the above-mentioned raw material components into the mixer according to the proportion, mix for 30min, and mix evenly;

[0059] (2) Put the uniformly mixed raw material components in step (1) into the mould, flatten it, then put it into a steel back coated with glue, and use a numerical control hot press machine to perform hot press molding. The loading pressure for hot press molding is 400kg / cm 2 , the hot pressing time is 5 minutes, the temperature of the upper mold of the press is 180°C, the temperature of the middle and lower ...

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Abstract

The invention discloses a friction material used for an elevator brake pad and application, and belongs to the technical field of the brake pads. Based on the total mass of raw material components ofthe friction material, the friction material comprises the following raw material components of , by mass, 5%-25%of phenolic resin, 2%-10% of organic silicone modified resin, 4%-15% of rubber base granular material, 3%-7% of silicon carbon, 10%-30% of precipitated silica, 5%-10% of zircon powder, 5%-25% of graphite, 3%-10% of molybdenum disulfide, 2%-8% of vermiculite, 2%-8% of titanium carbide powder, 2%-7% of toughened carbon fiber, 5%-30% of mineral fiber, 3%-10% of brass fiber and 0.5%-5% of phenolic resin toughening agent. According to the friction material used for the elevator brake padthe friction coefficient of the brake pad can be improved, the thermal expansion coefficient of the brake pad is small, the impact performance is high, and the locking phenomenon and the breakage andfracture phenomena of the brake pad due to thermal expansion of the brake pad are obviously improved.

Description

technical field [0001] The invention relates to the technical field of brake pads, in particular to a friction material used for elevator brake pads and its application. Background technique [0002] With the development of society, there are more and more high-rise buildings and large shopping malls, and the use of passenger elevators has become a development trend. The safety of elevators is directly related to the safety of people's lives, especially in recent years, elevator safety accidents have occurred frequently. There are usually two reasons for such accidents. One is the elevator electrical control system; the other is the elevator brake pads. The elevator brake pads may cause such problems because the brake pads have a large thermal expansion coefficient and poor impact performance. , Brake pads are easy to wear and tear, etc. [0003] Since the elevator brake pads are directly related to the safety of the elevator brakes, even if there is an accident in the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02C09K3/14B29C43/18B29C43/58B29L31/16
Inventor 刘桂香甄明晖孟宪华
Owner SHANDONG GOLD PHOENIX
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