Fiber-reinforced DCT wet clutch friction paper and manufacturing method thereof

A technology of wet clutch and fiber reinforcement, which is applied to friction linings, mechanical equipment, gear transmission mechanisms, etc., can solve the problems of late development of wet clutch face technology, limited mechanical properties of cellulose fibers, and harmful health of asbestos fibers, etc., to achieve The production process is scientific and reasonable, the effect of heat decay resistance is good, and the cost is low

Inactive Publication Date: 2020-01-17
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large foreign companies that use wet clutch face sheets include BorgWarner of the United States, Danes of Japan, and Raybesto of the United States. Their products cover almost the whole world, with a market share of more than 80%. Technical blockade caused technical barriers, resulting in late development of domestic wet clutch face technology
[0003] The composition of paper-based friction materials is the main factor affecting the performance of materials. The reinforcing fibers used in early paper-based friction materials are mainly cellulose fibers or asbestos fibers, and the mechanical properties of cellulose fibers are limited; asbestos fibers are harmful to health and cause environmental pollution; in recent years The wood fiber or bamboo fiber developed by scholars has poor heat resistance; carbon fiber has excellent performance but the cost is too high, so it is necessary to find fiber reinforced materials with stable performance, low price, and no pollution to the environment

Method used

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  • Fiber-reinforced DCT wet clutch friction paper and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A fiber-reinforced DCT wet clutch friction paper is composed of reinforcing fibers, friction performance regulators, fillers, base paper material dispersants and adhesives. -40%, filler 10-30%, dispersant 1-5%, adhesive 15-50%.

[0029] The reinforcing fibers are one or more of basalt fibers, aramid fibers, polyacrylonitrile-based carbon fibers, pitch-based carbon fibers, natural mineral fibers, FKF fibers, and polyvinyl alcohol fibers.

[0030] The friction performance modifier is one or more of cashew oil friction powder, precipitated barium sulfate, artificial graphite, chromite powder, aluminum oxide, antimony sulfide, molybdenum disulfide, and mica.

[0031] The filler is one or more of barite, bauxite, kaolin and talc.

[0032] The dispersing agent is one or two of barium stearate, calcium stearate and polyethylene glycol.

[0033] The adhesive is one or more of phenolic resin, cashew nut shell oil modified resin, melamine modified resin and boron modified resin...

Embodiment 2

[0035] A preparation method of fiber-reinforced DCT wet clutch friction paper, the specific steps are as follows:

[0036] (1) Add 40 parts of basalt fiber, 8 parts of aramid fiber, 5 parts of pitch-based carbon fiber and 4 parts of dispersant barium stearate into distilled water, the water temperature is 50±5℃, and stir for 30 minutes to make it evenly mixed.

[0037] (2), open the beating machine to make it further evenly mix, the beating concentration is 5%, and the beating degree is 50°SR to make a fiber-reinforced mixed solution;

[0038] (3), add friction performance modifier (8 parts of cashew nut oil friction powder, 8 parts of graphite powder, 4 parts of molybdenum disulfide, 4 parts of aluminum oxide), filler (6 parts of barite, 6 parts of aluminum oxide) in the mixed solution kaolin) and binder (40 parts of phenolic resin), they are evenly distributed in the slurry, and the solvent used is a mixed solution of polyethylene oxide and polyethylene oxide with a concentr...

Embodiment 3

[0046] A preparation method of fiber-reinforced DCT wet clutch friction paper, the specific steps are as follows:

[0047] (1), add 30 parts of FKF fibers, 10 parts of aramid fibers, 10 parts of polyacrylonitrile-based carbon fibers and 3 parts of dispersant calcium stearate to distilled water, the water temperature is 50 ± 5 ℃, and stirred for 30 minutes to make it evenly mixed;

[0048] (2), open the beater to make it further evenly mix, the beating concentration is 6%, and the beating degree is 48°SR, to make a fiber-reinforced mixed solution;

[0049] (3), add friction performance modifier (6 parts of cashew nut oil friction powder, 8 parts of graphite powder, 3 parts of molybdenum disulfide, 5 parts of aluminum oxide), filler (6 parts of barite, 6 parts of aluminum oxide) in the mixed solution Kaolin) and binder (30 parts of cashew nut oil modified resin), they are evenly distributed in the slurry, and the solvent used is a mixed solution of polyethylene oxide and polyeth...

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Abstract

The invention discloses a piece of fiber-reinforced DCT wet clutch friction paper and a manufacturing method of the fiber-reinforced DCT wet clutch friction paper. The fiber-reinforced DCT wet clutchfriction paper comprises reinforced fibers, friction performance adjusting agents, fillers, raw paper material dispersing agents and adhesive agents. The fiber-reinforced DCT wet clutch friction papercomprises, by mass percentage, 15%-55% of reinforced fibers, 15%-40% of friction performance adjusting agents, 10%-30% of fillers, 1%-5% of raw paper material dispersing agents and 15%-50% of adhesive agents. According to the fiber-reinforced DCT wet clutch friction paper and the manufacturing method of the fiber-reinforced DCT wet clutch friction paper, basalt fibers or FKF fibers are used as anonmetal fiber material for a wet type operation friction lining, and therefore the good performance of the carbon-based material friction lining can be obtained. Compared with pure carbon fiber reinforcement, the two fibers have the advantages that the production is convenient, the performance is good, and the cost is reduced. The FKF fibers are made by the combination of various natural mineralfibers and man-made mineral fibers, the heat resistance of the FKF fibers is better than that of asbestos, and the cost of the FKF fibers is lower than that of most non-asbestos fibers.

Description

technical field [0001] The invention relates to a friction material, in particular to a fiber-reinforced DCT wet clutch friction paper and a preparation method thereof. Background technique [0002] The wet clutch face plate is a crucial component of the DCT (dual clutch transmission), and its performance directly affects the performance of the clutch assembly. Large foreign companies using wet clutch faceplates include BorgWarner in the United States, Danex in Japan, and Rebestos in the United States. Their products cover almost the whole world, with a market share of more than 80%. The technical blockade has caused technical barriers, resulting in the late development of domestic wet clutch face technology. [0003] The composition of the paper-based friction material is the main factor affecting the performance of the material. The reinforcing fibers used in the early paper-based friction materials are mainly cellulose fibers or asbestos fibers, and the mechanical proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02
CPCF16D69/023F16D2200/0034F16D2200/0065F16D2200/0086F16D2200/0091F16D2250/0023
Inventor 张明远杨天博
Owner CHINA FIRST AUTOMOBILE
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