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Friction material and method for manufacturing friction plate by using friction material

A technology of friction materials and reinforcement materials, applied in the direction of friction linings, chemical instruments and methods, mechanical equipment, etc., can solve the problems of poor wear resistance of friction materials, and achieve the effect of good weather resistance and low hardness

Inactive Publication Date: 2013-04-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention solves the defect of poor wear resistance of the friction material in the technology, thereby providing a friction material with good friction and wear resistance and a method for preparing a friction plate using the friction material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 30 parts of liquid nitrile rubber, 4 parts of phenolic resin, 4 parts of zinc oxide (magnesium oxide), 5 parts of calcium carbonate, 8 parts of graphite, 30 parts of mineral fiber, 5 parts of potassium titanate whiskers, 4 parts of cashew nut shell oil friction powder , 4 parts of aluminum hydroxide. 1 part of sulfur powder, 1 part of 4020 anti-aging agent, 2 parts of DM accelerator, 2 parts of silane coupling agent.

[0040] The specific preparation process is:

[0041] 1. Preparation process The mineral fibers and whiskers are weighed and poured into a high-speed mixer, and then the coupling agent is sprayed to modify the surface of the mineral fibers and whiskers, and the speed of the high-speed mixer is controlled at 700 rpm;

[0042] 2. Add other weighed powdery fillers into the mixer, the mixing time is 3 minutes, and the speed is 700 rpm;

[0043]3. The mixture and liquid nitrile rubber are extruded and granulated on a single-screw extruder, and the particle di...

Embodiment 2

[0047] Prepare the friction sheet A2 according to the method of Example 1, the difference is that the friction material is as follows:

[0048] 20 parts of liquid nitrile rubber, 5 parts of phenolic resin, 6 parts of zinc oxide, 10 parts of calcium carbonate, 15 parts of graphite, 20 parts of mineral fiber, 7 parts of titanium dioxide whiskers, 7 parts of cashew nut shell oil friction powder, 7 parts of aluminum hydroxide . 2 parts of sulfur powder, 1 part of 4020 anti-aging agent, 1 part of DM accelerator, 1 part of silane coupling agent.

Embodiment 3

[0050] Prepare the friction sheet A3 according to the method of Example 1, the difference is that the friction material is as follows:

[0051] 10 parts of liquid nitrile rubber, 6 parts of phenolic resin, 8 parts of zinc oxide, 20 parts of calcium carbonate, 10 parts of graphite, 10 parts of mineral fiber, 10 parts of aluminum silicate whiskers, 8 parts of cashew nut shell oil friction powder, aluminum hydroxide 8 servings. 2.5 parts of sulfur powder, 1.5 parts of 4020 anti-aging agent, 3 parts of DM accelerator, and 3 parts of silane coupling agent.

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PUM

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Abstract

The invention provides a friction material comprising an adhesive, a reinforcing material, a friction-enhancing material, a lubricant, and a filling material. The adhesive is a mixture of liquid nitrile rubber and phenolic resin. The invention also provides a method for manufacturing a friction plate by using the friction material. According to the invention, liquid nitrile rubber is adopted as a substrate of the friction material, and the friction plate with a required shape is manufactured through extrusion granulation and vulcanization molding. The friction plate has the advantages of high abrasion resistance and low hardness. When the friction plate is used in mine hoisting machinery and agricultural working machinery, the friction plate can be processed into special shapes, and another special requirement of good weather resistance can be satisfied.

Description

technical field [0001] The invention belongs to the field of friction materials, in particular to a friction material and a method for preparing a friction sheet with the friction material. Background technique [0002] At present, all kinds of friction materials for mechanical braking are mainly resin-based friction materials, which generally use phenolic resin or modified phenolic resin as adhesive, add reinforcing fibers, and various functional fillers are formed by hot pressing, curing and other processes. become. Due to the hard and brittle nature of the resin, resin-based friction material products generally have high hardness (HRL > 80), resulting in loud noise during braking, brake chatter or gnawing phenomena, and resin friction materials are not easy to bend. Belt disadvantages. Therefore, the use of resin-based friction materials in industrial machinery such as mining machinery and agricultural machinery that requires soft brake materials, high impact resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L61/06C09K3/14C08K13/04C08K13/06C08K9/06C08K9/04B29B9/06B29C35/00B29C43/58F16D69/02
Inventor 旷文敏邵辉琳常德才刘勇王辉
Owner BYD CO LTD
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