Chemical nickel-plating method for carbon fiber

A technology of electroless nickel plating and carbon fiber, applied in liquid chemical plating, coating, metal material coating process and other directions, can solve the problems of many process steps, poor operability, easy volatilization, etc., to achieve simple process, low cost, Inexpensive effect

Inactive Publication Date: 2011-06-08
沈阳临德陶瓷研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that in the existing electroless plating method, due to the use of hydrofluoric acid acid-etched toxic solvents, which are volatile during the nickel plating process, and the use of palladium chloride activation treatment, the cost is high, the process steps are many, and it is operable. Insufficiency such as poor performance, a kind of electroless nickel plating method of carbon fiber is provided, and its preparation steps are as follows:

Method used

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Examples

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Embodiment 1

[0036] A kind of electroless nickel plating method of carbon fiber:

[0037] The first step: pre-treatment of the substrate

[0038] Put the carbon fiber in a muffle furnace, burn it at a temperature of 400°C for 30 minutes to remove the glue, then soak it in absolute ethanol at a room temperature of 25°C and a power of 500W, and disperse with magnetic stirring for 30 minutes. Obtain the first reaction solution; add 900ml of deionized water to every 100ml of the first reaction solution for dilution; remove the supernatant after settling for 80min, and obtain the first product after repeating 2-3 times; coarsening treatment, at 30g / L Filter after magnetic stirring dispersion reaction 30min in sodium hydroxide (NaOH) solution, adjust the vacuum tightness of filter vacuum instrument to be-0.1MPa, obtain the second product after suction filtration time 8min; Sensitization treatment, at 30g / L stannous chloride (SnCl 2 2H 2 (0) immerse in the sensitizing solution, filter after ma...

Embodiment 2

[0042] A kind of electroless nickel plating method of carbon fiber, its preparation steps are as follows:

[0043] The first step: pre-treatment of the substrate

[0044] Calcinate the carbon fibers in a furnace at 300°C for 5min; soak in absolute ethanol for 60min; at room temperature, stir in 30g / L NaOH solution for 30min and then filter; 2 Immerse in the sensitization solution for 30min, filter; configure silver ammonia solution, stir at room temperature for 2h, filter; in 20g / L NaH 2 PO 2 Reduce in the solution for 5min, filter;

[0045] The second step: electroless plating treatment

[0046] Configure the plating solution (28g / L NiSO 4 6H 2 O, 26g / L NaH 2 PO 2 , 26g / L NaAC, 15g / L sodium citrate), pour the carbon fiber into the plating solution, heat to 80°C while stirring, and react for 2h. Others are the same as embodiment 1.

Embodiment 3

[0048] A kind of electroless nickel plating method of carbon fiber, its preparation steps are as follows:

[0049] The first step: pre-treatment of the substrate

[0050] Calcinate the carbon fibers in a furnace at 400°C for 5min; soak in absolute ethanol for 60min; at room temperature, stir in 20g / L NaOH solution for 30min and then filter; 2 Immerse in the sensitization solution for 30min, filter; configure silver ammonia solution, stir at room temperature for 1h, filter; in 10g / L NaH 2 PO 2 The solution was reduced for 3 minutes and filtered.

[0051] The second step: electroless plating treatment

[0052] Configure the plating solution (40g / L NiSO 4 6H 2 O, 40g / L NaH 2 PO 2 , 40g / L NaAC, 30g / L sodium citrate), pour the carbon fiber into the plating solution, heat to 90°C while stirring, and react for 1h. Others are the same as embodiment 1.

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Abstract

The invention discloses a chemical nickel-plating method for carbon fiber, which is designed for overcoming the disadvantages of high cost, a large number of process steps and poor operability existing in the prior art. In the method, a chemical plating process is adopted; and a pre-treatment is performed on a raw material and chemical plating solution is prepared before the chemical plating. The pre-treatment process comprises the steps of: calcining by using a muffle furnace to remove glue; soaking in solution of absolute ethanol to remove oil; performing surface roughening and activating treatment by using solution of sodium hydroxide and solution of silver ammonia; sensitizing by using a sensitizer, namely stannous chloride; and performing surface reduction by using solution of sodium hypophosphite. The chemical plating solution consists of nickel sulfate hexahydrate, sodium hypophosphite, sodium pyrophosphate and sodium citrate. The chemical nickel-plating on the carbon fiber is finished by placing a pre-treatment product of the chemical plating into the chemical plating solution, and reacting, standing, filtering and drying under a chemical plating condition. The method has the characteristics that: the product has a uniform surface, a compact plating layer and uniform particles.

Description

technical field [0001] The invention belongs to the field of composite materials and relates to an electroless nickel plating method for carbon fibers Background technique [0002] Metal matrix carbon fiber composites have excellent properties such as high specific strength, high specific modulus, and good toughness, and have broad application prospects in aerospace, biomaterials, and civil industries. Using metallized carbon fiber as filler, the prepared shielding material has a good shielding effect and can be used as a wave-absorbing material for aircraft; the metal-plated carbon fiber is woven into a fabric in a certain way, which can be made into a simulated three-dimensional decoy body. Anti-radar reconnaissance and anti-guidance in high-tech warfare. However, due to the use of hydrofluoric acid acid-etched toxic solvent in the existing electroless nickel plating method, it is volatile in the nickel plating process, and palladium chloride is used for activation treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/28C23C18/22C22C47/04C22C101/10
Inventor 赵辉韩绍娟许壮志薛健张明时卓
Owner 沈阳临德陶瓷研发有限公司
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