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Carbon fiber paper-based friction material sprayed with Cr3C2-NiCr coating and preparation method of carbon fiber paper-based friction material

A paper-based friction material and carbon fiber technology, applied in the directions of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, non-fiber pulp addition, etc., can solve the problem of poor fiber dispersion of composite materials, poor nanoparticle uniformity, The preparation method is complex and other problems, to achieve the effects of excellent sliding wear resistance and fretting wear resistance, improved friction and wear performance, and simple process flow

Active Publication Date: 2020-10-30
JIANGSU AOSHEN HI TECH MATERIALS CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite material prepared by it has poor fiber dispersion, poor uniformity of nanoparticles and easy to fall off
CN206054734U discloses a preparation method of a polyether ether ketone seal, the preparation method is complicated, the required raw material is only polyether ether ketone resin, the elastic modulus is low, and the elongation is large when stressed
The wear-resistant coating prepared by this method has excellent friction properties, especially under high temperature conditions, but at the same time, the preparation process is complicated and requires high equipment
[0006] Currently, Cr in existing patents 3 C 2 -NiCr high-temperature and wear-resistant coatings are mostly applied on the surface of carbon steel, 45 steel or alloy steel, and there are few studies on high-performance coating composites on paper-based friction materials.

Method used

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  • Carbon fiber paper-based friction material sprayed with Cr3C2-NiCr coating and preparation method of carbon fiber paper-based friction material
  • Carbon fiber paper-based friction material sprayed with Cr3C2-NiCr coating and preparation method of carbon fiber paper-based friction material
  • Carbon fiber paper-based friction material sprayed with Cr3C2-NiCr coating and preparation method of carbon fiber paper-based friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] A spray Cr 3 C 2 -The preparation method of the carbon fiber paper base friction material of NiCr coating, comprises the following steps:

[0079] (1) Soak the carbon fiber with a length of 3-6mm in 60% concentrated nitric acid for 3h and wash it; soak the PEEK fiber with a length of 3-6mm in 10% hydrochloric acid for 3h; mix and stir for 30min; mix the pretreated carbon fiber with the pretreated The PEEK fibers were mixed according to 1:1, and the fibers were decomposed for 20 minutes to obtain a mixed fiber suspension (concentration: 1%);

[0080] (2) According to the quantitative 100g / m 2 base paper, mixed fiber suspension, aramid pulp after beating, filler Al 2 o 3 , SiO 2 , graphite, and friction modifier diatomaceous earth are evenly mixed to obtain a mixed pulp suspension; wherein, the total mass of mixed fiber and aramid pulp accounts for 90% of the mixed pulp, and the mass ratio between the two is 1:1 ; Filler Al 2 o 3 , SiO 2 , the quality of graphite...

Embodiment 2

[0085] A spray Cr 3 C 2 -The preparation method of the carbon fiber paper base friction material of NiCr coating, comprises the following steps:

[0086] (1) Soak the carbon fiber with a length of 3-6mm in 60% concentrated nitric acid for 3h and wash it; soak the PEEK fiber with a length of 3-6mm in 10% hydrochloric acid for 3h; mix and stir for 30min; mix the pretreated carbon fiber with the pretreated The PEEK fibers were mixed according to 1:1, and the fibers were decomposed for 20 minutes to obtain a mixed fiber suspension (concentration: 1%);

[0087] (2) According to the quantitative 100g / m 2 base paper, mixed fiber suspension, aramid pulp after beating, filler Al 2 o 3 , SiO 2 , graphite, and friction modifier diatomaceous earth are evenly mixed to obtain a mixed pulp suspension; wherein, the total mass of mixed fiber and aramid pulp accounts for 90% of the mixed pulp, and the mass ratio between the two is 1:1 ; Filler Al 2 o 3 , SiO 2 , the quality of graphite a...

Embodiment 3

[0092] A spray Cr 3 C 2 -NiCr-coated carbon fiber paper-based friction material and a preparation method thereof, comprising the following steps:

[0093] (1) Soak the carbon fiber with a length of 3-6mm in 60% concentrated nitric acid for 3h and wash it; soak the PEEK fiber with a length of 3-6mm in 10% hydrochloric acid for 3h; mix and stir for 30min; mix the pretreated carbon fiber with the pretreated The PEEK fibers were mixed according to 1:1, and the fibers were decomposed for 20 minutes to obtain a mixed fiber suspension (concentration: 1%);

[0094] (2) According to the quantitative 100g / m 2 base paper, mixed fiber suspension, aramid pulp after beating, filler Al 2 o 3 , SiO 2 , graphite, and friction modifier diatomaceous earth are evenly mixed to obtain a mixed pulp suspension; wherein, the total mass of mixed fiber and aramid pulp accounts for 90% of the mixed pulp, and the mass ratio between the two is 1:1 ; Filler Al 2 o 3 , SiO 2 , the quality of graphit...

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Abstract

The invention discloses a carbon fiber paper-based friction material sprayed with a Cr3C2-NiCr coating and a preparation method of the carbon fiber paper-based friction material, belonging to the technical field of paper-based composite materials. According to the method, inorganic fibers and organic fibers are mixed to achieve a mutual synergistic effect, so friction and abrasion performance is improved; the Cr3C2-NiCr powder is sprayed, and the excellent heat resistance, high-temperature oxidation resistance and corrosion resistance of the Cr3C2-NiCr powder is compounded with a carbon fiberpaper-based material so as to prepare the paper-based friction material with excellent performance; and the paper-based friction material has the advantages of good chemical performance stability, good size stability, small expansion coefficient, excellent sliding wear resistance and fretting wear resistance and light weight, and is an ideal material for preparing sealing rings and brake pads.

Description

technical field [0001] The invention relates to a spraying Cr 3 C 2 - NiCr-coated carbon fiber paper-based friction material and a preparation method thereof, belonging to the technical field of paper-based composite materials. Background technique [0002] Friction materials are widely used in power machinery. Friction materials absorb or transmit power through friction to achieve braking and transmission functions, including brake linings (brake pads) and clutch plates. Paper-based friction material is a wet friction material with excellent porous, oil-absorbing, easy-to-compress and rebound properties. Friction material base paper, and then impregnated with resin to produce paper-based friction material. Paper-based friction materials have developed into a class of superior friction materials because of their advantages such as low production cost, stable dynamic friction coefficient, close dynamic / static friction coefficient ratio, stable lamination performance, low w...

Claims

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Application Information

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IPC IPC(8): D21H13/20D21H13/50D21H17/67
CPCD21H13/20D21H13/50D21H17/67D21H17/675
Inventor 王士华张国亮龙柱胡爱林李志强桑明珠郭帅李广斌
Owner JIANGSU AOSHEN HI TECH MATERIALS CO LTD
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