A kind of electrochemically modified carbon cloth reinforced friction material and preparation method thereof

A friction material and electrochemical technology, applied in the field of friction materials, can solve problems such as harsh conditions and long processing time, and achieve the effects of mild reaction conditions, simple equipment, and short processing time

Active Publication Date: 2017-07-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbon fiber cloth used is oxidized, but its oxidation requires high temperature and high pressure environment, harsh conditions and long processing time

Method used

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  • A kind of electrochemically modified carbon cloth reinforced friction material and preparation method thereof
  • A kind of electrochemically modified carbon cloth reinforced friction material and preparation method thereof
  • A kind of electrochemically modified carbon cloth reinforced friction material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1: Cut the carbon cloth into a rectangular shape of 7cm*8cm, first soak it in deionized water for 30min, then arrange the carbon cloth in an acetone solution for 12h with ultrasonic assistance, and then dry it to obtain sample P.

[0037] Step 2: nickel sulfate (NiSO 4 ·7H 2 O) 0.1mol / L, ammonium sulfate ((NH 4 ) 2 SO 4 ) 10g / L, boric acid (H 3 BO 4 ) 20g / L, add 500ml of deionized water and stir for 2 hours to obtain composite nickel source electrolyte solution A, the pH at room temperature is controlled to be 2.2-2.7.

[0038] Step 3: Add solution A to the electrolytic cell, fix the sample P on the anode of the graphite electrode, process the current at 2A, and process for 3 minutes. After the reaction is completed, exchange the cathode and anode, and process again for 3 minutes. Remove the carbon cloth from the electrolytic cell Take it out and dry it in an oven at 80°C to obtain sample B.

[0039] Step 4: Put sample B into modified phenolic resin (30% cas...

Embodiment 2

[0042] Step 1: Cut the carbon cloth into a rectangular shape of 7cm*8cm, first soak it in deionized water for 30min, then arrange the carbon cloth in an acetone solution for 12h with ultrasonic assistance, and then dry it to obtain sample P.

[0043] Step 2: nickel sulfate (NiSO 4 ·7H 2 O) 0.05mol / L, ammonium sulfate ((NH 4 ) 2 SO 4 )5g / L, boric acid (H 3 BO 4 ) 10g / L, add 500ml of deionized water and stir for 1 hour to obtain composite nickel sulfate electrolyte solution A, the pH at room temperature is controlled to be 2.2~2.7.

[0044] Step 3: Add solution A into the electrolytic cell, fix the samples P1 and P2 on the cathode and anode of the graphite electrode respectively, the treatment current intensity is 1A, the treatment time is 1min, and the treated carbon cloth is dried in an oven at 60°C Samples B1, B2 were obtained.

[0045] Step 4: spray modified phenolic resin solution (10% nitrile rubber modified phenolic resin dehydrated alcohol solution) on sample B1, ...

Embodiment 3

[0047] Step 1: Cut the carbon cloth into a rectangular shape of 7cm*8cm, first soak it in deionized water for 30min, then arrange the carbon cloth in an acetone solution for 12h with ultrasonic assistance, and then dry it to obtain sample P.

[0048] Step 2: nickel sulfate (NiSO 4 ·7H 2 O) 0.3mol / L, ammonium sulfate ((NH 4 ) 2 SO 4 ) 15g / L, boric acid (H 3 BO 4 ) 30g / L, add 500ml of deionized water and stir for 3 hours to obtain composite nickel sulfate electrolyte solution A, pH control at room temperature is 2.2~2.7.

[0049] Step 3: Add solution A into the electrolytic cell, fix the samples P1 and P2 on the cathode and anode of the graphite electrode respectively, set the treatment current to 3A, and the treatment time to 4min, and dry the treated carbon cloth in an oven at 80°C to obtain Sample B1, B2.

[0050] Step 4: spray modified phenolic resin solution (20% cashew shell modified phenolic resin absolute ethanol solution) on sample B1, B2, dry naturally, get samp...

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Abstract

The invention provides an electrochemically modified carbon cloth reinforced friction material and a preparation method thereof. The method uses carbon fiber cloth and modified phenolic resin as raw materials, treats the carbon cloth under electrochemical conditions, selects a composite nickel source as the electrolyte, and adopts Carbon fibers are treated by anodic oxidation and cathodic deposition of metallic nickel. Then spray the modified phenolic resin solution on the treated carbon cloth, take it out and dry it naturally, and use a vulcanizing machine to form it by hot pressing. In the present invention, the carbon cloth is anodized and cathodically Deposition treatment increases the oxygen-containing functional groups on the surface of carbon cloth and uniformly deposits metallic nickel. It has the advantages of simple equipment and high efficiency. Metallic nickel has high hardness, wear resistance and catalytic activity, which greatly improves the bonding strength between carbon cloth and resin. , thereby improving the uniformity of the network polymer formed by the linear polymer through crosslinking during the vulcanization process, so that it has better tribological properties.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of friction materials, in particular to an electrochemically modified carbon cloth reinforced friction material and a preparation method thereof. [0003] 【Background technique】 [0004] Composite materials refer to materials that use one material as a matrix and another material as a reinforcement. Carbon fiber has the advantages of high specific strength, high specific modulus, high temperature resistance, corrosion resistance, and wear resistance. Carbon fiber cloth has good strength in both transverse and longitudinal directions, high load-bearing pressure and excellent tribological properties. In composite materials Medium is a reinforcement material with excellent performance. Carbon cloth reinforced resin composites are mainly used in automotive automatic transmissions, differentials, synchronizers, torque managers and other wet clutches. Document 1 "Chinese Patent Publication No. CN102757621A" disclo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08K9/00C08K7/06C25D5/54C25D3/12
Inventor 费杰罗丹段笑黄剑锋欧阳海波李翠艳罗威张超
Owner SHAANXI UNIV OF SCI & TECH
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