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a spray cr 3 c 2 Carbon fiber paper base friction material of -nicr coating and preparation method thereof

A paper-based friction material and carbon fiber technology, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material treatment, non-fiber pulp addition, etc., can solve the problems of poor fiber dispersion, poor uniformity of nanoparticles, Complicated preparation process and other problems, to achieve the effect of excellent sliding wear resistance and fretting wear resistance, improved friction and wear performance, and simple process flow

Active Publication Date: 2022-06-21
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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  • a spray cr <sub>3</sub> c <sub>2</sub> Carbon fiber paper base friction material of -nicr coating and preparation method thereof
  • a spray cr <sub>3</sub> c <sub>2</sub> Carbon fiber paper base friction material of -nicr coating and preparation method thereof
  • a spray cr <sub>3</sub> c <sub>2</sub> Carbon fiber paper base friction material of -nicr coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] A sprayed Cr 3 C 2 -The preparation method of carbon fiber paper-based friction material coated with NiCr, comprising the following steps:

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

[0080] (2) According to the quantitative 100g / m 2 The base paper, mixed fiber suspension, aramid pulp after beating, filler Al 2 O 3 , SiO 2 , graphite, and friction performance modifier diatomaceous earth are mixed evenly to obtain a mixed pulp suspension; among them, the total mass of the 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 mass of graphite accounts for 5...

Embodiment 2

[0085] A sprayed Cr 3 C 2 -The preparation method of carbon fiber paper-based friction material coated with NiCr, comprising the following steps:

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

[0087] (2) According to the quantitative 100g / m 2 The base paper, mixed fiber suspension, aramid pulp after beating, filler Al 2 O 3 , SiO 2 , graphite, and friction performance modifier diatomaceous earth are mixed evenly to obtain a mixed pulp suspension; among them, the total mass of the 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 mass of graphite accounts for 5% ...

Embodiment 3

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

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

[0094] (2) According to the quantitative 100g / m 2 The base paper, mixed fiber suspension, aramid pulp after beating, filler Al 2 O 3 , SiO 2 , graphite, and friction performance modifier diatomaceous earth are mixed evenly to obtain a mixed pulp suspension; among them, the total mass of the 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 mass of graphite accounts for 5...

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Abstract

The invention discloses a spray coating Cr 3 C 2 The invention discloses a carbon fiber paper base friction material with NiCr coating and a preparation method thereof, belonging to the technical field of paper base composite materials. The method of the present invention adopts the mixing of inorganic fiber and organic fiber, realizes mutual synergy, has improved friction and wear performance; The present invention is to Cr 3 C 2 ‑NiCr powder is sprayed, and its excellent heat resistance, high temperature oxidation resistance and corrosion resistance are used to compound it with carbon fiber paper-based materials to prepare paper-based friction materials with excellent performance. It has stable chemical properties, good dimensional stability, and expansion It has the advantages of small coefficient, excellent resistance to sliding wear and fretting wear, and light weight. It is an ideal material for making sealing rings and brake pads.

Description

technical field [0001] The present invention relates to a kind of spraying Cr 3 C 2 -NiCr-coated carbon fiber paper-based friction material and a preparation method thereof belong 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 porosity, oil absorption, easy compression and resilience. It is mainly composed of fibers, binders, fillers, friction performance modifiers, etc. Friction material base paper, which is then impregnated with resin to form paper-based friction material. Paper-based friction materials have developed into a class of more advanced materials due to their low production cost, stable dynamic friction factor, close dynamic / static ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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