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Aramid fiber surface metallization treatment method

A technology of aramid fiber and surface metal, which is applied in fiber processing, textiles and papermaking, etc., to achieve the effects of improving mechanical properties, improving electrical conductivity, and improving corrosion resistance

Inactive Publication Date: 2013-01-30
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant research on the direct metallization of aramid fiber surface.

Method used

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  • Aramid fiber surface metallization treatment method
  • Aramid fiber surface metallization treatment method
  • Aramid fiber surface metallization treatment method

Examples

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Embodiment 1

[0025] Embodiment 1 (single-layer nickel coating): the specific steps of the method for metallizing the surface of aramid fibers in this embodiment are:

[0026] (1) Treat the aramid fiber with alcohol containing NaOH concentration of 20wt% at a temperature of 35°C for 30 minutes for degreasing and roughening, then sensitize it with stannous chloride sensitizing solution for 3 minutes, Then use palladium chloride activation solution to activate for 3 minutes; the formula of stannous chloride sensitization solution is stannous chloride SnCl 2 2H 2 O: 15g / l, hydrochloric acid HCl: 45g / l, tin Sn: 5g / l; the formula of palladium chloride activation solution is palladium chloride PdCl 2 : 0.1g / l, hydrochloric acid HCl: 20ml / l;

[0027] (2) Pre-plate the aramid fibers treated in step (1) in the pre-plating solution, the composition of the pre-plating solution is nickel sulfate: 15 g / l, sodium hypophosphite: 40 g / l, sodium acetate: 15 g / l, sodium potassium tartrate: 1m g / l, adjust...

Embodiment 2

[0030] Embodiment 2 (double-layer nickel-copper coating): the specific steps of the method for metallizing the surface of the aramid fiber of the present embodiment are:

[0031] (1) Treat the aramid fiber with alcohol with an alkali concentration of 15wt% at a temperature of 30°C for 50 minutes for degreasing and roughening, and then sensitize it with stannous chloride sensitizing solution for 4 minutes , and then use palladium chloride activation solution to activate for 4 minutes; the formula of stannous chloride sensitization solution is stannous chloride SnCl 2 2H 2 O: 10g / l, hydrochloric acid HCl: 30g / l, tin Sn: 3g / l; the formula of silver nitrate activation solution is silver nitrate AgNO 3 : 6g / l, hydrochloric acid HCl: 25ml / l.

[0032] (2) Pre-plate the aramid fiber treated in step (1) in the pre-plating solution, the composition of the pre-plating solution is nickel chloride: 20g / l, potassium phosphite: 30g / l, sodium acetate: 18g / l , Potassium sodium tartrate: 1.5...

Embodiment 3

[0036] Embodiment 3: The specific steps of the metallization treatment method on the surface of the aramid fiber of the present embodiment are:

[0037] (1) Treat the aramid fiber with alcohol with an alkali concentration of 45wt% at a temperature of 45°C for 90 minutes for degreasing and roughening, and then sensitize it with stannous chloride sensitizing solution for 5 minutes , and then activated by palladium chloride activation solution for 8 minutes; the formula of stannous chloride sensitization solution is stannous chloride SnCl 2 2H 2 O: 20g / l, hydrochloric acid HCl: 25g / l, tin Sn: 4g / l; the formula of palladium chloride activation solution is palladium chloride PdCl 2 : 0.5g / l, hydrochloric acid HCl: 35ml / l.

[0038] (2) Pre-plate the aramid fiber treated in step (1) in the pre-plating solution, the composition of the pre-plating solution is copper chloride: 30 g / l, sodium hypophosphite: 20 g / l, sodium acetate : 20 g / l, sodium potassium tartrate: 2m g / l, adjust the p...

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Abstract

The invention belongs to the field of fiber material surface metallization treatment and particularly relates to an aramid fiber surface metallization treatment method which takes hypophosphite as reductant and metal salt as the plating solution of the main salt to deposit a metal coating on the surface of aramid fiber through chemical plating. The surface metallization treatment process includes the steps of unoiling, coarsening, sensitizing, activating, carrying out preplating and carrying out chemical plating. Through the metallization treatment method disclosed by the invention, a uniform compact nonporous metal coating can be plated on the surface of the aramid fiber, and therefore the electrical conductivity and the corrosion resistance of the aramid fiber can be improved and the service life of the aramid fiber can be prolonged. The aramid fiber plated with the metal coating can also be used as reinforcement of metal matrix composite material so as to improve the mechanical property of the composite material.

Description

technical field [0001] The invention belongs to the field of surface metallization treatment of fiber materials, in particular to a method for metallization treatment of the surface of aramid fibers. Background technique [0002] As a new type of non-metallic material, aramid fibers are widely used in various aspects such as aviation, aerospace, construction, and sports. Aramid fiber is a kind of high temperature resistant (maximum use temperature is 240 ℃, T g >300°C, decomposition temperature is 500°C), high modulus, high strength, wear resistance, low electrical conductivity, and a fiber material with a density of 1 / 4 that of steel wire, whose strength exceeds that of steel wire, and is often used as a high-performance composite material enhancing substances. Untreated aramid fibers have shortcomings such as smooth surface, high inertness, low surface energy, lack of chemically active functional groups, low reactivity, and poor adhesion to the matrix, which directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M101/36
Inventor 段永华孙勇方东升
Owner KUNMING UNIV OF SCI & TECH
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