CN106048676A - Composite electroplating solution capable of improving hardness of scaffolds - Google Patents

Abstract

The invention discloses a composite electroplating solution capable of improving the hardness of scaffolds. The composite electroplating solution is composed of, by weight, 6.8-9 parts of aniline, 0.1-0.2 part of ammonium persulfate, 50-60 parts of boric acid, 220-250 parts of nickel sulfate, 40-50 parts of nickel chloride, 0.2-0.3 part of lauryl sodium sulfate, 50-60 parts of polytetrafluoroethylene emulsion, 4-5 parts of lactic acid, 3-4 parts of cationic surface active agents FC134, 0.2-0.3 part of polyethylene glycol, 1.8-2.5 parts of cerous nitrate, 3-5 parts of polyurethane emulsion, 0.8-1 part of urotropin, 0.2-0.3 part of sodium polyacrylate, 1.6-2 parts of nano-scaled molybdenum disulfide, an appropriate amount of ethyl alcohol and an appropriate amount of deionized water. The electroplating solution does not contain lead or mercury, plating layers are resistant to high temperature, high in hardness and good in ductility, the electroplating technology is simple, and the smoothness is good. Thus, the composite electroplating solution is worthy of popularization.

Description

A kind of composite plating solution improving scaffold hardness

Technical field

The present invention relates to electroplate liquid technical field, particularly relate to a kind of composite plating solution improving scaffold hardness.

Background technology

Electroplate also known as metal electrodeposition technology, be that workpiece is immersed in the solution containing slaine to be deposited, and to workpiece Apply negative charge, in surface of the work one layer of metal compact with workpiece of deposition or the process of alloy-layer.That electroplates is basic Principle is to make the metal ion in solution that reduction reaction to occur on solution and plating piece interface by various electric field actions, generates gold Belong to atom and be deposited on metal surface formation coating.Composite deposite is by by adding insoluble solid particle to plating solution In, make matrix metal co-deposit with solid particle, form a kind of process for modifying surface of composite deposite.Nickel coating because of It has the features such as excellent corrosion resistance, wearability and thickness of coating is uniform, obtains at aspects such as aviation, automobile, electronics, chemical industry To extensively application.But, nickel coating coefficient of friction is bigger.And politef is to be polymerized by tetrafluoroethylene monomer, performance Stable, in addition to there is splendid resistance to chemical corrosion, also there is the most heat-resisting, tolerance to cold, and the least friction Coefficient.By adding polytetrafluoroethylgranule granule in electroplate liquid, polytetrafluoroethylgranule granule is made to be distributed to along with the electro-deposition of nickel In nickel coating, the composite deposite prepared has significant antifriction effect.

In " research of NI-PTFE composite plating process " literary composition, author proposes by adding politef breast in electroplate liquid Liquid and FC134 cationic surfactant, be successfully prepared Ni/PTFE composite deposite, and test shows that coating surface is uniform, flat Whole, in terms of tribological property, the coefficient of friction of composite deposite is 0.218, is only about the 34% of nickel coating, but due to PTFE matter is soft, after entering in coating, makes composite deposite relatively nickel coating hardness reduce, and wear extent increased simultaneously.So In some field, this composite deposite can not meet demand.Rare earth element can significantly improve solid particle in functional composite material The performance such as content, hardness, wearability and high temperature oxidation resistance, a series of at chromium plating, thermo-chemical treatment, conversion film etc. at present Process for treating surface is applied.So the present invention will add the property such as hardness and the wearability of rare earth element raising composite deposite Can, expand application.

Summary of the invention

The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of composite plating improving scaffold hardness Liquid.

The present invention is achieved by the following technical solutions:

A kind of composite plating solution improving scaffold hardness, is made up of the raw material of following weight portion: aniline 6.8-9, over cure Acid ammonium 0.1-0.2, boric acid 50-60, nickel sulfate 220-250, Nickel dichloride. 40-50, sodium lauryl sulphate 0.2-0.3, polytetrafluoro Vac emulsion 50-60, lactic acid 4-5, cationic surfactant FC1343-4, Polyethylene Glycol 0.2-0.3, cerous nitrate 1.8-2.5, Polyaminoester emulsion 3-5, Wu Tuoluo product 0.8-1, sodium polyacrylate 0.2-0.3, nano molybdenum disulfide 1.6-2, appropriate amount of ethanol, go from Sub-water is appropriate.

Described a kind of composite plating solution improving scaffold hardness, is made up of following concrete steps:

(1) polyaminoester emulsion and Wu Tuoluo product are added in the deionized water of 5-6 times amount dilution, add sodium polyacrylate ultrasonic It is uniformly dispersed standby；Nano molybdenum disulfide is added to ultrasonic disperse in the deionized water of 3-5 times amount and becomes suspension, add poly-second Glycol and cerous nitrate ultrasonic disperse are uniform, are added in polyurethane mixed liquor by molybdenum bisuphide suspension, mix ultrasonic vibration, centrifugal Separating, product is washed with deionized post-drying；

(2) by DBSA, water, aniline and n-butyl alcohol according to mol ratio 1.5-2:10-14:1.0-1.4:0.8-1.2 Ratio is added in flask, is stirred vigorously and obtains transparent colourless emulsion, then equal with product mix and blend prepared by step (1) Even, Ammonium persulfate. deionized water dissolving is made the solution of 2mol/L, is then slowly dropped in flask, after dropping Reacting 5-7h under room temperature, the ethanol adding excess is slowly stirred 7-10min, filters, and product deionized water, ethanol are the most clear Wash, be subsequently placed in vacuum drying oven and at 60 DEG C, be dried 24h；

(3) being added to by boric acid in the deionized water of 60 DEG C, it is standby that stirring makes it dissolve, and adds sulfur when temperature of electroplating solution is 50 DEG C Acid nickel, Nickel dichloride. and sodium lauryl sulphate, use magnetic stirrer the most standby, adds polytetrafluoro in another container Vac emulsion and cationic surfactant FC134, be stirring evenly and then adding into product and surplus materials thereof prepared by step (2), Ultrasonic agitation is uniformly rear standby；

(4) standby product step (3) prepared is with 800r/min mix and blend 20-30min, the most auxiliary at 80kHz ultrasound wave It is transferred in electrolysis bath after helping concussion 30min, stands the granule removing particle diameter >=5 μm, i.e. can get electroplate liquid.

The invention have the advantage that the present invention to use in electroplate liquid and add ptfe emulsion raising nickel/polytetrafluoroethyl-ne The anti-attrition of alkene composite deposite and lubricity, improve the performance of single nickel coating, in order to improve composite deposite hardness and wear-resisting The problem that performance is the highest, uses nano-particle reinforcement coating, easily reunites because of nano-particle again and adhere to negative electrode table in electroplate liquid Face makes the problem that surface roughness increases, and uses polyaniline that granule is carried out coating modification, improves and easily reunites and to the moon between microgranule The tendency that pole springs up, and improve the performances such as the wearability of coating, hardness and high temperature oxidation resistance, utilize polyaminoester emulsion etc. Molybdenum bisuphide modification makes the raising of its mechanical performance, the compatibility good, easily modified, and improves the salt spray resistance of coating, moisture-proof The characteristic of the aspects such as hot and solvent resistant, the most leaded hydrargyrum of electroplate liquid of the present invention, coating is high temperature resistant, hardness good, ductility is good, system Standby technique is simple, and slickness is good, is worthy to be popularized.

Detailed description of the invention

A kind of composite plating solution improving scaffold hardness, is made up of the raw material of following weight portion (kilogram): aniline 6.8, Ammonium persulfate. 0.1, boric acid 50, nickel sulfate 220, Nickel dichloride. 40, sodium lauryl sulphate 0.2, ptfe emulsion 50, Lactic acid 4, cationic surfactant FC1343, Polyethylene Glycol 0.2, cerous nitrate 1.8, polyaminoester emulsion 3, Wu Tuoluo product 0.8, poly- Sodium acrylate 0.2, nano molybdenum disulfide 1.6, appropriate amount of ethanol, deionized water are appropriate.

Described a kind of composite plating solution improving scaffold hardness, is made up of following concrete steps:

(1) polyaminoester emulsion and Wu Tuoluo product are added in the deionized water of 5 times amount dilution, add ultrasonic point of sodium polyacrylate Dissipate the most standby；Nano molybdenum disulfide is added to ultrasonic disperse in the deionized water of 3 times amount and becomes suspension, add Polyethylene Glycol Uniform with cerous nitrate ultrasonic disperse, molybdenum bisuphide suspension is added in polyurethane mixed liquor, mixes ultrasonic vibration, be centrifuged and divide From, product is washed with deionized post-drying；

(2) DBSA, water, aniline and n-butyl alcohol are added to flask according to mol ratio 1.5:10:1.0:0.8 ratio In, it being stirred vigorously and obtain transparent colourless emulsion, the product mixing and stirring then prepared with step (1), by Ammonium persulfate. Make the solution of 2mol/L with deionized water dissolving, be then slowly dropped in flask, after dropping, at room temperature react 5h, The ethanol adding excess is slowly stirred 7min, filters, and product deionized water, ethanol clean repeatedly, is subsequently placed in vacuum and does Dry case is dried at 60 DEG C 24h；

(3) being added to by boric acid in the deionized water of 60 DEG C, it is standby that stirring makes it dissolve, and adds sulfur when temperature of electroplating solution is 50 DEG C Acid nickel, Nickel dichloride. and sodium lauryl sulphate, use magnetic stirrer the most standby, adds polytetrafluoro in another container Vac emulsion and cationic surfactant FC134, be stirring evenly and then adding into product and surplus materials thereof prepared by step (2), Ultrasonic agitation is uniformly rear standby；

(4) standby product step (3) prepared is with 800r/min mix and blend 20min, shakes at 80kHz ultrasonic assistant simultaneously It is transferred in electrolysis bath after swinging 30min, stands the granule removing particle diameter >=5 μm, i.e. can get electroplate liquid.

Plating piece carrying out plate previous series of processes and enters electroplating bath, nickel anode plating front surface activation processing, afterwards according to preparation Electroplate liquid carry out electroplating processes, bath temperature is 45 DEG C, and electric current density is 9A/dm2, and coating is carried out performance test, result As follows:

Outward appearance: smooth even, coefficient of friction: 0.27, wear extent (500g, 200r/min, mm3): 2.43 × 10-2, porosity (individual/cm2): 0.8, adhesion: do not peel off, salt fog (120 hours): without significant change.

Claims (2)

1. the composite plating solution improving scaffold hardness, it is characterised in that be made up of the raw material of following weight portion: benzene Amine 6.8-9, Ammonium persulfate. 0.1-0.2, boric acid 50-60, nickel sulfate 220-250, Nickel dichloride. 40-50, sodium lauryl sulphate 0.2-0.3, ptfe emulsion 50-60, lactic acid 4-5, cationic surfactant FC1343-4, Polyethylene Glycol 0.2-0.3, Cerous nitrate 1.8-2.5, polyaminoester emulsion 3-5, Wu Tuoluo product 0.8-1, sodium polyacrylate 0.2-0.3, nano molybdenum disulfide 1.6- 2, appropriate amount of ethanol, deionized water are appropriate.

A kind of composite plating solution improving scaffold hardness, it is characterised in that by following concrete step Suddenly make:

(1) polyaminoester emulsion and Wu Tuoluo product are added in the deionized water of 5-6 times amount dilution, add sodium polyacrylate ultrasonic It is uniformly dispersed standby；Nano molybdenum disulfide is added to ultrasonic disperse in the deionized water of 3-5 times amount and becomes suspension, add poly-second Glycol and cerous nitrate ultrasonic disperse are uniform, are added in polyurethane mixed liquor by molybdenum bisuphide suspension, mix ultrasonic vibration, centrifugal Separating, product is washed with deionized post-drying；

(2) by DBSA, water, aniline and n-butyl alcohol according to mol ratio 1.5-2:10-14:1.0-1.4:0.8-1.2 Ratio is added in flask, is stirred vigorously and obtains transparent colourless emulsion, then equal with product mix and blend prepared by step (1) Even, Ammonium persulfate. deionized water dissolving is made the solution of 2mol/L, is then slowly dropped in flask, after dropping Reacting 5-7h under room temperature, the ethanol adding excess is slowly stirred 7-10min, filters, and product deionized water, ethanol are the most clear Wash, be subsequently placed in vacuum drying oven and at 60 DEG C, be dried 24h；

(3) being added to by boric acid in the deionized water of 60 DEG C, it is standby that stirring makes it dissolve, and adds sulfur when temperature of electroplating solution is 50 DEG C Acid nickel, Nickel dichloride. and sodium lauryl sulphate, use magnetic stirrer the most standby, adds polytetrafluoro in another container Vac emulsion and cationic surfactant FC134, be stirring evenly and then adding into product and surplus materials thereof prepared by step (2), Ultrasonic agitation is uniformly rear standby；

(4) standby product step (3) prepared is with 800r/min mix and blend 20-30min, the most auxiliary at 80kHz ultrasound wave It is transferred in electrolysis bath after helping concussion 30min, stands the granule removing particle diameter >=5 μm, i.e. can get electroplate liquid.