Fiber reinforced resin-based wet friction material and preparation method

A fiber-reinforced resin, wet friction material technology, applied in the field of friction materials, can solve the problems of low strength, large amount of water, high energy consumption, etc. The effect of a high coefficient of stability

Active Publication Date: 2018-09-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to avoid the deficiencies of the prior art, the present invention proposes a fiber-reinforced resin-based wet friction material and its preparation method, which solves the problem of the large amount of water used in the production of paper-based friction material preforms by traditional papermaking technology, and the high energy consumption of the wet paper drying process of the preforms. Large size, preform wet paper and low strength of preform, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: The material composition is 18% of aramid fiber and basalt fiber, 10% of alumina, 15% of graphite, 7% of barite, 2% of potassium feldspar powder, 8% of kaolin, 2% of molybdenum disulfide, and diatomaceous earth , phenolic resin 37%.

[0057] Step 1: Put the chopped aramid fibers and basalt fibers into the cotton feeder, open them to the state of monofilament fibers through the opener, loosen them through the vibrating cotton feeder, and comb them through the carding machine. One-dimensional or three-dimensional overlapping to form a non-directional overlapping fiber layer, and then layer by layer layer by layer layer by layering machine, sent to the needle punching machine to achieve a density of 26 punches / cm 2 A loose fibrous skeleton material with rich pore structure and porosity.

[0058] Step 2: Dissolve the friction modifier and filler with an appropriate amount of water, and stir in an appropriate amount to make the filler approximate to a paste.

[...

Embodiment 2

[0064] Example 2: Material composition: aramid fiber and nylon 18%, alumina 10%, graphite 5%, potassium feldspar powder 5%, fluorite powder 4%, cashew nut shell oil powder 1%, barite 7%, kaolin 8%, molybdenum disulfide 2%, phenolic resin 40%.

[0065] Step 1: Put the chopped aramid fibers and nylon fibers into the cotton feeder, open them to the state of monofilament fibers through the opener, loosen them through the vibrating cotton feeder, and comb them through the carding machine. Or three-dimensional overlapping to form a non-directional overlapping fiber layer, and then laminated layer by layer by a web-laying machine, and then sent to a needle-punching machine with a density of 26 punches / cm 2 A loose fibrous skeleton material with rich pore structure and porosity.

[0066] Step 2: Dissolve the friction modifier and filler with an appropriate amount of water, and stir in an appropriate amount to make the filler approximate to a paste.

[0067] Step 3: Spread the dope o...

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Abstract

The invention relates to a fiber reinforced resin-based wet friction material and a preparation method. A mature non-woven technology is combined with a preparation process of a paper-base friction material to open up the prospect of a new paper-base friction material preparation technology, the problems existing in existing traditional preparation technologies can be solved, and then paper-base friction discs which are high in performance are obtained. The preparation method comprises the steps that firstly, fibers are carded and laid up through the non-woven technology to obtain porous fibercloth; secondly, mixed filler paste is uniformly added into the fiber cloth, phenolic resin serves as an adhesive, and finally the paper-base friction material is prepared through gum dipping and hotpressing. The friction coefficient of the paper-base friction material is 0.1-0.13, the static friction coefficient is 0.148-0.160, the stability coefficient is up to 90% or above, the friction coefficient is stable even at high pressure and high speed, and the friction coefficient little fluctuates.

Description

technical field [0001] The invention belongs to the field of friction materials, and relates to a fiber-reinforced resin-based wet friction material and a preparation method. Background technique [0002] Paper-based friction material is composed of fibers, binders, friction performance regulators, etc. It is a fiber-reinforced resin-based friction material manufactured by wet papermaking technology. "Material" is a key material for transmission / braking devices using lubricating oil as a medium, and is widely used in automatic transmissions, wet clutches / brakes and other devices. [0003] This kind of paper-based friction material pursues composition and structure uniformity, uniform pore distribution, sufficient porosity and oil absorption, good compressive shear strength, high temperature resistance, working at 80-160 degrees Celsius, 50m / s working line speed and It maintains a sufficiently stable friction coefficient under the working pressure of 6MPa, and has a clutch c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14D04H1/488D04H1/4342D06M11/45D06M11/74D06M11/56D06M11/79D06M11/53D06M15/41D06M101/36
CPCC09K3/149D04H1/4342D04H1/488D06M11/45D06M11/53D06M11/56D06M11/74D06M11/79D06M15/41D06M2101/36
Inventor 傅业伟周乐李贺军印涛周柯
Owner NORTHWESTERN POLYTECHNICAL UNIV
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