A vacuum electroplating process and electroplating equipment using nano-silver ions to improve efficiency

Abstract

The application provides a vacuum electroplating process and an electroplating device using nano silver ions to improve efficiency, which comprises the following steps: placing silver pieces into water, obtaining nano silver glue by irradiating with nanosecond laser pulses; adding a surfactant to the nano silver glue and obtaining highly dispersed nano silver particles by laser pulses; introducing argon gas with a certain pressure into a vacuum chamber, performing laser treatment on the surface of a substrate by pulse laser; adding the nano silver particles into the vacuum chamber, performing vacuum magnetron sputtering on the substrate, and projecting the focused laser pulses onto the surface of the required electroplating position of the substrate, so as to obtain an electroplated part; spraying a protective film on the electroplated surface of the electroplated part; performing laser treatment on the surface of the substrate by using pulse laser, then performing vacuum magnetron sputtering on the substrate, and projecting the focused laser pulses onto the surface of the required electroplating position of the substrate, so as to accurately lock the electroplating position and effectively improve the electroplating efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum electroplating, in particular to a vacuum electroplating process using nano-silver ions to improve efficiency and an electroplating device. BACKGROUND

[0002] In the existing nano-silver ion vacuum electroplating process, the substrate is generally activated by an acid solution before electroplating, or the substrate is treated by a plasma or ion source device to remove surface impurities and make the surface bright, and then electroplated. The acid solution activation treatment method consumes a large amount of acid, causes waste acid and waste metal treatment problems, and reduces the mechanical properties of the device metal over a long period of time. The plasma or ion source bombardment method has a long service life, high cost, and a complex electroplating process with low efficiency. Therefore, a vacuum electroplating process using nano-silver ions to improve efficiency and an electroplating device are proposed. SUMMARY

[0003] To solve the above problems, the present application proposes a vacuum electroplating process using nano-silver ions to improve efficiency and an electroplating device to more accurately solve the above-mentioned problems of the existing acid solution activation of the substrate before electroplating, or the treatment of the substrate by a plasma or ion source device to remove surface impurities and make the surface bright, high cost, and complex electroplating process with low efficiency.

[0004] The present application is realized by the following technical solutions:

[0005] The present application proposes a vacuum electroplating process using nano-silver ions to improve efficiency, comprising the following steps:

[0006] S1. Put silver flakes into water, and obtain nano-silver glue by nanosecond laser pulse irradiation;

[0007] S2. Add a surfactant to the nano-silver glue, and obtain highly dispersed nano-silver particles by laser pulse;

[0008] S3. Introduce a certain pressure of argon gas into the vacuum chamber, and perform laser treatment on the surface of the substrate by pulse laser to remove surface impurities and make the surface of the substrate bright;

[0009] S4. Spray a polydopamine film on the surface of the substrate to be electroplated by high-energy beam;

[0010] S5. Introduce nitrogen gas, adjust the argon gas flow, and add nano-silver particles into the vacuum chamber to perform vacuum magnetron sputtering on the substrate, and project the laser pulse focused on the surface of the substrate at the desired electroplating position to obtain an electroplated part;

[0011] S6. Spray a protective film on the electroplated surface of the electroplated part.

[0012] Further, the irradiation time in the step S1 is 20-30 min.

[0013] Further, the surfactant in the step S2 is sodium dodecyl sulfonate and lauryl sodium sulfate.

[0014] Further, the vacuum degree in the vacuum chamber in the step S3 is 10 Pa-25 Pa.

[0015] Further, the power of the pulse laser in the step S3 is 10-25 W.

[0016] Further, the vacuum degree in the vacuum chamber in the step S5 is 0.5 Pa-1 Pa.

[0017] Further, the flow ratio of the nitrogen and argon in the step S5 is 0.8:1.

[0018] Further, the protective film in the step S5 is a mixed spraying liquid of epoxy resin, acetone, sodium hexametaphosphate, potassium borohydride, orange gel and curing agent; the mixed spraying liquid spraying film raw material is obtained by sequentially adding 3.2 parts of potassium borohydride, 12.2 parts of orange gel to the mixture of 62 parts of epoxy resin, 4.8 parts of acetone and 3.2 parts of sodium hexametaphosphate, and then stirring for 5 minutes, and then adding 14.6 parts of curing agent and stirring.

[0019] A vacuum electroplating equipment using nano-silver ions to improve efficiency, comprising:

[0020] A nanosecond laser pulse irradiation bin for preparing nano-silver glue by silver sheet;

[0021] A bin for preparing nano-silver particles using laser pulses in the presence of surfactants;

[0022] A vacuum bin for removing impurities on the surface of a substrate and electroplating;

[0023] A gas exchange device for conveying gas;

[0024] A spraying device for spraying a protective film on the electroplated surface of an electroplated part.

[0025] The beneficial effects of the present application are:

[0026] 1. By vacuumizing the vacuum chamber to a suitable pressure, then introducing a certain amount of argon to protect the substrate, and then using pulse laser to treat the surface of the substrate, the impurities on the surface of the substrate can be quickly, accurately and efficiently removed, and the nano-silver ions can be uniformly diffused on the surface of the substrate by high-energy beam spraying polydopamine film, and more quickly penetrate into the substrate.

[0027] 2. Then during electroplating, nitrogen is passed in, argon flow is adjusted, nano-silver particles are added into the vacuum chamber, vacuum magnetron sputtering is performed on the substrate, laser pulse is focused and projected to the surface of the required electroplating position of the substrate, the electroplating position is accurately locked, and the electroplating efficiency is effectively improved;

[0028] 3. By using laser technology in the preparation of nano-silver ions, the treatment of the substrate and electroplating, the electroplating process efficiency is effectively increased and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A process flow chart of the vacuum electroplating process using nano-silver ions to improve efficiency according to the present application;

[0030] The purpose of the present application, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. EMBODIMENTS

[0031] In order to more clearly and completely illustrate the technical solutions of the present application, the present application will be further described below with reference to the accompanying drawings.

[0032] Please refer to Figure 1 The present application provides a vacuum electroplating process using nano-silver ions to improve efficiency, comprising the following steps:

[0033] S1. Put silver sheet into water, obtain nano-silver glue by nanosecond laser pulse irradiation; use nanosecond laser pulse to irradiate the surface of metal silver contained in water with 1064nm excitation light, adjust the irradiation time in the period of 20-30min, and prepare suitable nano-metal Ag colloid;

[0034] S2. Add surfactant to the nano-silver glue and obtain high-dispersed nano-silver particles by laser pulse; in the presence of sodium dodecyl sulfonate and lauryl trimethylamine, high-dispersed nano-silver particles are obtained by using laser pulse with intensity of 150mJ, the prepared nano-silver particles have better contact effect on the surface of the substrate and can improve the penetration rate of nano-silver ions into the substrate;

[0035] S3; a certain pressure of argon is introduced into the vacuum chamber, the vacuum chamber is vacuumized to a vacuum degree of 10 Pa-25 Pa, and then 1.5-2.0*10-1 Pa of argon is introduced; the surface of the substrate is treated by a pulsed laser with a power of 10-25 W to remove impurities on the surface of the substrate and make the surface of the substrate bright; meanwhile, the nano-silver ions can penetrate into the loose substrate and accelerate the migration of the nano-silver ions; when only the oil stains and the surface-adherent impurities on the surface of the substrate are removed, the pulsed laser power is 10-15 W; when the rust stains on the surface of the substrate are removed or the electroplating lines are prepared to increase the adhesion of the electroplated nano-silver, the pulsed laser power is 15-25 W;

[0036] S4: a polydopamine film is sprayed on the surface of the substrate to be electroplated by a high-energy beam; during the subsequent electroplating of nano-silver, the sputtered nano-silver particles are small in size, can be effectively filled in the polydopamine film pores and gaps, and can reduce the porosity; meanwhile, due to the uniform dispersion characteristics, the sputtered nano-silver can be uniformly distributed, and the nano-silver ions can be uniformly diffused on the surface of the substrate and more quickly penetrate into the substrate.

[0037] S5; nitrogen is introduced, the argon flow is adjusted, and the flow ratio of nitrogen to argon is adjusted to 0.8:1; the nano-silver particles are added to the vacuum chamber with a vacuum degree of 0.5 Pa-1 Pa, and the substrate is vacuum magnetron sputtered to make the nano-silver ions uniformly diffuse on the surface of the substrate; meanwhile, the laser pulse is focused and projected onto the surface of the desired electroplating position of the substrate, and the laser pulse focuses the nano-silver particles according to the electroplating pattern of the substrate; the laser pulse makes the nano-silver ions more quickly penetrate into the substrate, increases the electroplating rate, and obtains an electroplated part;

[0038] S6; the electroplated part is placed with the electroplated surface facing up, and a protective film made of a mixed spraying liquid of epoxy resin, acetone, sodium hexametaphosphate, potassium borohydride, orange gel, and curing agent is sprayed on the electroplated surface by laser focusing spraying and ultrasonic instrument auxiliary coating adhesion divergence. Embodiment

[0039] S1; the silver sheet is placed in water, and nano-silver glue is obtained by nanosecond laser pulse irradiation; the surface of the metal silver contained in the water is irradiated by a nanosecond laser pulse device with a 1064 nm excitation light, and the irradiation time is adjusted for 20-30 min to prepare a suitable nano-metal Ag colloid;

[0040] S2; after adding a surfactant to the nano-silver glue, high-dispersed nano-silver particles are obtained by laser pulse; in the presence of sodium dodecyl sulfonate and lauryl trimethylamine, high-dispersed nano-silver particles are obtained by using a laser pulse with a strength of 150 mJ;

[0041] S3: a certain pressure of argon is introduced into the vacuum chamber, the vacuum chamber is vacuumed to a vacuum degree of 10 Pa, and then 1.5*10-1 Pa of argon is introduced; the surface of the substrate is treated by a pulsed laser with a power of 10-25 W to remove impurities on the surface of the substrate and make the surface of the substrate bright;

[0042] S4: a polydopamine film is sprayed on the surface of the substrate to be electroplated by a high-energy beam;

[0043] S5: nitrogen is introduced, the flow rate of argon is adjusted, the flow rate ratio of nitrogen to argon is adjusted to 0.8:1, nano-silver particles are added to the vacuum chamber with a vacuum degree of 0.5 Pa, vacuum magnetron sputtering is performed on the substrate, and laser pulses are focused and projected onto the surface of the desired electroplating position of the substrate, and the nano-silver particles are focused by the laser pulses according to the electroplating pattern of the substrate to obtain an electroplated part;

[0044] S6: the electroplated part is placed with the electroplated surface facing up, and a protective film made of a mixture of epoxy resin, acetone, sodium hexametaphosphate, potassium borohydride, orange gel, and curing agent is sprayed on the electroplated surface by laser focusing and spraying with the aid of ultrasonic instruments. Embodiment

[0045] S1: the silver sheet is placed in water, and nano-silver glue is obtained by irradiating with a nanosecond laser pulse; the surface of the metal silver contained in the water is irradiated with a nanosecond laser pulse with a 1064 nm excitation light, and the irradiation time is adjusted to 20-30 min to prepare a suitable nano-metal Ag colloid;

[0046] S2: after adding a surfactant to the nano-silver glue, high-dispersed nano-silver particles are obtained by laser pulses; in the presence of sodium dodecyl sulfonate and lauryl trimethylamine, high-dispersed nano-silver particles are obtained by using laser pulses with a strength of 150 mJ;

[0047] S3: a certain pressure of argon is introduced into the vacuum chamber, the vacuum chamber is vacuumed to a vacuum degree of 25 Pa, and then 2.0*10-1 Pa of argon is introduced; the surface of the substrate is treated by a pulsed laser with a power of 10-25 W to remove impurities on the surface of the substrate and make the surface of the substrate bright;

[0048] S4: a polydopamine film is sprayed on the surface of the substrate to be electroplated by a high-energy beam;

[0049] S5: nitrogen is introduced, the flow rate of argon is adjusted, the flow rate ratio of nitrogen to argon is adjusted to 0.8:1, nano-silver particles are added to the vacuum chamber with a vacuum degree of 1 Pa, vacuum magnetron sputtering is performed on the substrate, and laser pulses are focused and projected onto the surface of the desired electroplating position of the substrate, and the nano-silver particles are focused by the laser pulses according to the electroplating pattern of the substrate to obtain an electroplated part;

[0050] S6: Put the electroplated part with the electroplated surface upwards into the laser focusing spraying and the ultrasonic instrument auxiliary coating dispersion to spray the protective film made of the mixed spraying liquid of epoxy resin, acetone, sodium hexametaphosphate, potassium borohydride, orange gel and curing agent on the electroplated surface.

[0051] Proportion 1:

[0052] S1: Add silver nitrate and polyvinyl alcohol into water, and then add potassium hydroxide as an alkaline solvent to adjust the pH value to about 9;

[0053] S2: Add potassium citrate, heat and stir to obtain nano-silver powder by reaction;

[0054] S3: Introduce 1.0*10-1pa of argon into the vacuum chamber, keep the vacuum degree of the vacuum chamber at 25pa, and use plasma or ion source equipment to bombard the substrate in the vacuum chamber.

[0055] S4: Add the nano-silver powder obtained in step S2 into the vacuum chamber, keep the vacuum degree of the vacuum chamber at 0.5Pa, and perform vacuum magnetron sputtering on the substrate, and use laser focusing through a lens to project onto the surface of the yarn to complete electroplating.

[0056] Experiment: Prepare samples prepared by the electroplating process of Examples 1-2 and the sample prepared by the electroplating process of Comparative Example 1, and refer to the standard method of GB / T1786-2006, set the friction form to 1000m under the load of 50N, and the friction speed is 1.5m / s, and the wear amount is obtained according to the mass difference. The data obtained are shown in the following table

[0057] Conclusion: The nano-silver electroplated parts prepared by the processes of Examples 1 and 2 have high efficiency and good wear resistance.

[0058] A vacuum electroplating device for improving efficiency using nano-silver ions, comprising:

[0059] A nanosecond laser pulse irradiation bin for preparing nano-silver glue from silver flakes; it transmits silver flakes through a conveying chain or a machine arm; it puts silver flakes into water in the nanosecond laser pulse irradiation bin, uses a nanosecond laser pulse device to irradiate the surface of metal silver contained in the water with 1064nm excitation light, and adjusts the time for 20-30min to prepare suitable nano-metal Ag colloid;

[0060] A nanosecond laser pulse irradiation bin for preparing nano-silver particles in the presence of a surfactant; it is an existing laser pulse preparation of nano-silver particles device;

[0061] Vacuum chamber for removing impurities and electroplating on substrate surface; the vacuum chamber has a base for placing substrate, a vacuum magnetron sputtering instrument, a pulse laser focusing device and a pulse laser emitter with power of 10-25W;

[0062] Ventilation device for conveying gas; it comprises a nitrogen gas ventilation assembly, an argon gas ventilation assembly and a vacuum pumping assembly;

[0063] Spraying device for spraying protective film on electroplated surface of electroplated part; it comprises a laser focusing spraying assembly and an ultrasonic instrument; the protective film raw material made of mixed spraying liquid is sprayed on the electroplated surface by laser focusing spraying and auxiliary coating adhesion dispersion by the ultrasonic instrument.

[0064] Of course, the present application can have other various embodiments, and based on the embodiments, other embodiments obtained by those skilled in the art without any creative labor shall fall within the scope of the present application.

Claims

1. A vacuum electroplating process using nano-silver ions to improve efficiency, characterized in that, Includes the following steps: S1; Place a silver sheet in water and irradiate it with a nanosecond laser pulse to obtain a nano-silver paste. Use a nanosecond laser pulser to irradiate the surface of metallic silver contained in water with 1064nm excitation light. Adjust the irradiation time to 20-30 minutes to prepare a suitable nano-metal Ag colloid. S2; After adding a surfactant to the nano-silver paste, highly dispersed nano-silver particles are obtained by laser pulse. In the presence of sodium dodecyl sulfonate and hexadecyltrimethylol, highly dispersed nano-silver particles are obtained by laser pulse with an intensity of 150mJ. The prepared nano-silver particles have better contact effect with the substrate surface and can improve the rate of nano-silver ions penetrating into the substrate. S3; Argon gas at a certain pressure is introduced into the vacuum chamber, and the vacuum chamber is evacuated to a vacuum degree of 10Pa-25Pa. Then, argon gas of 1.5-2.0×10-1Pa is introduced. The substrate surface is laser-treated by a pulsed laser with a power of 10-25W to remove impurities from the substrate surface and make the substrate surface bright. At the same time, it can also allow nano silver ions to penetrate into the porous substrate and accelerate the migration of nano silver ions. S4: Apply a polydopamine film to the surface of the substrate to be electroplated using a high-energy beam; S5; Enter Nitrogen gas and argon gas flow rate are adjusted to a ratio of 0.8:

1. Nano-silver particles are added to the vacuum chamber with a vacuum degree of 0.5Pa-1Pa. Vacuum magnetron sputtering is performed on the substrate to allow nano-silver ions to diffuse uniformly on the substrate surface. At the same time, a laser pulse is focused and projected onto the surface of the substrate where electroplating is required. The laser pulse is focused on the nano-silver particles according to the electroplating pattern on the substrate. The laser pulse allows the nano-silver ions to penetrate into the substrate more quickly, increasing the electroplating rate and obtaining the electroplated part. S6; Spray a protective film onto the electroplated surface of the electroplated part.

2. The vacuum electroplating process using nano-silver ions to improve efficiency according to claim 1, characterized in that, The protective film in step S6 is a mixed spraying liquid of epoxy resin, acetone, sodium hexametaphosphate, potassium borohydride, orange gel, and curing agent.

3. The electroplating equipment according to claim 1, characterized in that, include: Nanosecond laser pulse irradiation chamber for preparing nano-silver paste using silver sheet; A laser pulse generation chamber for preparing silver nanoparticles in the presence of a surfactant; Vacuum chambers used for removing impurities from substrate surfaces and for electroplating; A gas exchange device used for conveying gas; A spraying device for applying a protective film to the electroplated surface of electroplated parts.

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