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Asbestos-free non-metal friction material and preparation method thereof

A friction material and asbestos-free technology, which is applied in the field of friction materials and its preparation, can solve the problems of poor high temperature resistance of hybrid fiber reinforced materials, high density of semi-metallic friction materials, and easy damage to the dual disc, etc., to achieve good braking comfort , Stable thermal decay performance, high temperature resistance and performance consistency

Inactive Publication Date: 2007-11-28
浙江万赛汽车零部件股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above-mentioned non-environmental protection in the production process of asbestos friction materials, semi-metallic friction materials have high density, high hardness, are easy to damage the dual disk, are easy to rust, and are prone to noise during braking, and hybrid fiber reinforced materials have poor high temperature resistance technical flaws

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  • Asbestos-free non-metal friction material and preparation method thereof

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Effect test

Embodiment 1

[0036] A new non-asbestos non-metallic friction material, the friction material is composed of the following components by weight percentage: 4% aramid fiber, 18% LAPINUS inorganic mineral fiber, 16% phenolic resin, 5% nitrile rubber powder, 25% barium sulfate , 10% calcium carbonate, 5% molybdenum disulfide, 8% artificial graphite, 8% coke, 1% alumina.

[0037] The preparation method of the above-mentioned novel asbestos-free non-metallic friction material, the method comprises the following steps:

[0038] A, mixing, uniformly mix the above-mentioned aramid fibers with artificial graphite and coke in a blender, so that the aramid fibers are in a uniformly dispersed state, then add other ingredients and mix evenly;

[0039] B. Cold pressing, the pressure is 50Mpa, the temperature is normal temperature, and the time is 1min;

[0040] C. Heat treatment, heat treatment in a single temperature section at 300°C for 1 hour;

[0041] D. Barbecue, the temperature is 600°C, and the ...

Embodiment 2

[0045] A new non-asbestos non-metallic friction material, the friction material is composed of the following components by weight percentage: 5% aramid fiber, 25% LAPINUS inorganic mineral fiber, 20% phenolic resin, 3% nitrile rubber powder, 20% barium sulfate , 10% calcium carbonate, 5% molybdenum disulfide, 5% artificial graphite, 6% coke, 1% alumina.

[0046] The preparation method of the above-mentioned novel asbestos-free non-metallic friction material, the method comprises the following steps:

[0047] A, mixing, uniformly mix the above-mentioned aramid fibers with artificial graphite and coke in a blender, so that the aramid fibers are in a uniformly dispersed state, then add other ingredients and mix evenly;

[0048] B. Cold pressing, pressure 50Mpa, temperature at room temperature, time 2min;

[0049] C. Heat treatment, heat treatment in a single temperature section at 300°C for 2.5 hours;

[0050] D. Barbecue, temperature 600°C, time 1.5min;

[0051] E. Surface tr...

Embodiment 3

[0054]A new non-asbestos non-metal friction material, the friction material is composed of the following components by weight percentage: 2% aramid fiber, 16% LAPINUS inorganic mineral fiber, 20% phenolic resin, 4.5% nitrile rubber powder, 25% barium sulfate , 10% calcium carbonate, 5% molybdenum disulfide, 8% artificial graphite, 8% coke, 1.5% alumina.

[0055] The preparation method of the above-mentioned novel asbestos-free non-metallic friction material, the method comprises the following steps:

[0056] A, mixing, uniformly mix the above-mentioned aramid fibers with artificial graphite and coke in a blender, so that the aramid fibers are in a uniformly dispersed state, then add other ingredients and mix evenly;

[0057] B. Cold pressing, pressure 50Mpa, temperature at room temperature, time 3min;

[0058] C. Heat treatment, heat treatment in a single temperature section at 300°C for 3 hours;

[0059] D. Barbecue, temperature 600°C, time 2min;

[0060] E. Surface treatm...

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Abstract

The present invention relates to friction material for automobile brake disc, and is especially one kind of friction material reinforced with the mixture of aramid fiber and inorganic mineral fiber and its preparation process. The new non-metal friction material without asbestos consists of aramid fiber, LAPINUS inorganic mineral fiber, phenolic resin, butadiene-acrylonitrile rubber powder, inorganic stuffing and friction regulator. The organic-inorganic composite material reinforced friction material has raised comprehensive performance, stable friction performance and friction coefficient variation with temperature within 10 %. In addition, the present invention also provides high temperature fast curing process to ensure the heat resisting performance of the product and lowered power consumption.

Description

technical field [0001] The invention relates to a friction material for an automobile brake pad and a preparation method thereof, in particular to a friction material reinforced by mixing aramid fibers and inorganic mineral fibers and a preparation method thereof. Background technique [0002] Braking noise exists in various existing automobile brake pads, and the main reason for the noise is the vibration of the brake pads. Since the area of ​​disc brake pads is smaller than that of drum brake pads, and the load per unit area is larger, it is necessary to require disc brake pads to have better wear resistance and higher friction coefficient in work. In order to meet this requirement , the existing friction materials are generally made of reinforcing materials, binders, friction modifiers and fillers through chemical and physical reactions. Among these components, the reinforcement effect has a crucial influence on the performance of friction mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/14C08L61/06C08K7/04
Inventor 洪建栋
Owner 浙江万赛汽车零部件股份有限公司
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