LOW COPPER-CONTAINING FRICTION MATERIAL COMPOSITION USED AS BRAKE PAD

• US 20150031788A1
• Filed: 06/22/2011
• Published: 01/29/2015
• Est. Priority Date: 05/21/2011
• Status: Active Grant

• Current Assignee: Ruiyang Automotive Materials (Xiantao) Co., Ltd.
• Original Assignee: Ruiyang Automotive Materials (Xiantao) Co., Ltd.
• Inventors: Zhang, Jim Zewei
• Granted Patent: US 8,980,974 B2
• Time in Patent Office: Days
• US Class Current: 523/156
• CPC Class Codes: F16D 69/02 Composition of linings ; Methods of manufacturing
• CPC Class Codes: F16D 69/026 containing fibres

Abstract

A low copper-containing friction material composition used for brake pad is provided, which consists of the following components by weight parts: 4˜6 parts of aramid fiber, 2˜2.5 parts of tyre powder, 5˜6 parts of heavy magnesia, 5˜6 parts of red vermiculite, 8˜10 parts of ceramic fiber, 3.5˜5 parts of magnetite, 7˜8 parts of boron-containing phenolic resin, 15˜17 parts of calcium sulfate crystal whisker, 16-18 parts of potassium titanate, 15˜17 parts of barite, 5.5˜7 parts of flake graphite, 6˜8 parts of friction powder of cashew nut oil, 6˜8 parts of calcined petroleum coke, 1.5˜2 parts of boron nitride, 5˜7 parts of flake aluminum powder, 0.4˜0.5 parts of pure copper fiber, 0.4˜0.6 parts of black silicon carbide. Said friction material composition is highly environmental friendly and has low content of heavy metal, wherein the content of copper is lower than 0.5%, and an excellent friction layer and transfer membrane can be formed when using said friction material composition. Said friction material composition has a satisfactory high temperature and thermal decay resistant performance, long service life, good abrasion resistance and stable friction coefficient.

Claims

1. A low copper-containing friction material composition used for brake pad, characterized in that, the composition consists of the following components by weight parts:

4˜

6 parts of aramid fiber, 2˜

2.5 parts of tyre powder, 5˜

6 parts of heavy magnesia, 5˜

6 parts of red vermiculite, 8˜

10 parts of ceramic fiber, 3.5˜

5 parts of magnetite, 7˜

8 parts of boron-containing phenolic resin, 15˜

17 parts of calcium sulfate crystal whisker, 16˜

18 parts of potassium titanate, 15˜

17 parts of barite, 5.5˜

7 parts of flake graphite, 6˜

8 parts of friction powder of cashew nut oil, 6˜

8 parts of calcined petroleum coke, 1.5˜

2 parts of boron nitride, 5˜

7 parts of flake aluminum powder, 0.4˜

0.5 parts of pure copper fiber, 0.4˜

0.6 parts of black silicon carbide.

2. The low copper-containing friction material composition used for brake pad of claim 1, characterized in that, the composition consists of the following components by weight parts:

4.5 parts of aramid fiber, 2.5 parts of tyre powder, 6 parts of heavy magnesia, 5.7 parts of red vermiculite, 9.5 parts of ceramic fiber, 5 parts of magnetite, 7.7 parts of boron-containing phenolic resin, 16 parts of calcium sulfate crystal whisker, 16.7 parts of potassium titanate, 16 parts of barite, 6 parts of flake graphite, 7.5 parts of friction powder of cashew nut oil, 7 parts of calcined petroleum coke, 1.5 parts of boron nitride, 5.5 parts of flake aluminum powder, 0.43 parts of pure copper fiber, 0.5 parts of black silicon carbide.

3. The low copper-containing friction material composition used for brake pad of claim 1, characterized in that, the composition consists of the following components by weight parts:

5 parts of aramid fiber, 2.3 parts of tyre powder, 5.7 parts of heavy magnesia, 5.5 parts of red vermiculite, 10 parts of ceramic fiber, 4.7 parts of magnetite, 7.3 parts of boron-containing phenolic resin, 16.3 parts of calcium sulfate crystal whisker, 16.7 parts of potassium titanate, 15.5 parts of barite, 6.2 parts of flake graphite, 6.9 parts of friction powder of cashew nut oil, 7.3 parts of calcined petroleum coke, 1.7 parts of boron nitride, 5 parts of flake aluminum powder, 0.46 parts of pure copper fiber, 0.6 parts of black silicon carbide.