CN105296973A - Surface chemical nickel-plating method for ultra high molecular weight polyethylene powder - Google Patents
Surface chemical nickel-plating method for ultra high molecular weight polyethylene powder Download PDFInfo
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Abstract
The invention relates to the field of preparation of core-shell structure composite particles, in particular to a surface chemical nickel-plating method for ultra high molecular weight polyethylene powder. The surface chemical nickel-plating method comprises the following steps: adding the ultra high molecular weight polyethylene powder into a chemical plating solution at a temperature of 40-80 DEG C, and stirring and mixing the powder and the chemical plating solution uniformly in an ultrasonic water-bath environment so as to obtain a mixed solution; and then, adding a reducing agent into the mixed solution drop by drop, treating the mixed solution for 30-60 minutes at a constant temperature, washing the mixed solution, carrying out suction filtration on the mixed solution and drying the mixed solution to obtain a nickel-plated ultra high molecular weight polyethylene composite particle. The surface chemical nickel-plating method is reasonable in design; chemical nickel-plating is carried out on the surface of the high molecular weight polyethylene powder by adopting a chemical nickel-plating method, so that the obtained composite particle has the characteristics of being small in density, low in cost and the like, can be used as a filler in the electromagnetic shielding field and also can be independently prepared and formed, and therefore, a chemical plating technology and the application filed of the ultra high molecular weight polyethylene are greatly expanded.
Description
Technical field
The present invention relates to the preparation field of nucleocapsid structure composite particles, specifically a kind of ultrahigh molecular weight polyethylene(UHMWPE) powder surface chemical nickel plating method.
Background technology
Electroless plating technology utilizes metal salt solution to make reducing metal ions become metal under the effect of reductive agent, and make it evenly be coated on the matrix surface with catalytic activity.Electroless plating can realize the evenly coated of metal, and strong with the bonding force of matrix surface.Preparing high conductivity composite particles in the coated high conductivity of matrix surface and the good metallics of chemical stability is one of important application of electroless plating technology.
The excellent specific property that the composite particles with nucleocapsid structure can have shell metallic and core body material concurrently is prepared by chemical plating method, [MancierV is widely used in fields such as photoelectric material, functional stuffing and magneticsubstances, etal.UltrasonSonochem, 2010,17:690-696; LiWZ, etal.ACSApplMaterInterfaces, 2013,5:883-891].At present conventional body material based on non-metal powder, as polystyrene microsphere, hollow glass micropearl, glass fibre, carbon fiber etc.Wherein polymeric matrix has the characteristics such as workability, good mechanical properties, quality be light, the conductive composite particle prepared by chemical plating method has the advantages such as the adjustable and morphological specificity of specific conductivity is controlled, can be widely used in the fields such as electron device, aviation, military affairs.Therefore, expansion electroless plating technology is to the range of choice of polymeric matrix, and meanwhile, the range of application of expansion polymeric matrix, the application demand making composite particles meet different field has important Research Significance and using value widely.
Summary of the invention
The present invention, in order to expand the range of application of chemical plating method on polymeric matrix, provides a kind of ultrahigh molecular weight polyethylene(UHMWPE) powder surface chemical nickel plating method.
The present invention is achieved by the following technical solutions: a kind of ultrahigh molecular weight polyethylene(UHMWPE) powder surface chemical nickel plating method, the steps include: that ultrahigh molecular weight polyethylene(UHMWPE) powder joins temperature is in the chemical plating fluid of 40 ~ 80 DEG C, and insulated and stirred mixes under ultrasonic water bath environment; Then reductive agent is dropwise added in mixed solution, constant temperature process 30 ~ 60min, afterwards it is washed, suction filtration, oven dry, obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles;
Described chemical plating fluid is by the NiCl of 10 ~ 50g/L
26H
2the C of O, 30 ~ 100g/L
6h
5na
3o
72H
2the NH of O, 100 ~ 300ml/L
3h
2o and distilled water are formed, and reductive agent is by the NaH of 20 ~ 100g/L
2pO
2h
2o and distilled water are formed.
Aforesaid method is reasonable in design, chemical plating method is adopted to carry out chemical nickel plating at ultrahigh molecular weight polyethylene(UHMWPE) powder surface, the composite particles obtained has the features such as density is little, cost is low, both can use in electromagnetic shielding field as filler, also can prepare separately shaping, extend the Application Areas of electroless plating technology and ultrahigh molecular weight polyethylene(UHMWPE) greatly.
Further, the invention provides the surface preparation of ultrahigh molecular weight polyethylene(UHMWPE) powder, this pretreated method is:
(a) alligatoring: ultrahigh molecular weight polyethylene(UHMWPE) powder is joined in coarsening solution, 25 ~ 30 DEG C of thermostatic ultrasonic stirred in water bath 30 ~ 60min, washing;
(b) sensitization: the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring is joined in sensitizing solution, 25 ~ 30 DEG C of thermostatic ultrasonic stirred in water bath 30 ~ 60min, washing;
C () activates: join in activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, 25 ~ 30 DEG C of thermostatic ultrasonic stirred in water bath 15 ~ 30min, washing, dry, for subsequent use.
And provide the reagent adopted in above-mentioned pretreatment process: described coarsening solution is by the potassium bichromate of 30g/L, the 98wt% vitriol oil of 700ml/L and distilled water are formed; Sensitizing solution is by the tin protochloride of 20g/L, and the concentrated hydrochloric acid of the 37wt% of 10ml/L and distilled water are formed; Activation solution is by the Palladous chloride of 0.1 ~ 1g/L, and the concentrated hydrochloric acid of the 37wt% of 10ml/L and distilled water are formed.
The present invention is etched powder surface by alligatoring, to increase specific surface area, improves in follow-up sensitizing and adsorbs Sn
2+ability and reactivation process in the bonding strength of catalytic active center and particle surface.Then by sensitization and activation, Pd atomic deposition is made to form active center at particle surface.Then chemical plating method is adopted to carry out chemical nickel plating at particle surface.The regulation and control that the present invention realizes composite particles microscopic appearance and conductivity by changing the factors such as reductant concentration, complexing agent concentration and powder loading in the plating pre-processing technique of ultrahigh molecular weight polyethylene(UHMWPE) powder, chemical plating fluid, prepare the nucleocapsid structure composite particles with excellent electricity-magnetic double function characteristic.
Accompanying drawing explanation
Fig. 1 is the SEM figure of nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles corresponding in embodiment 5, and the right is partial enlarged drawing.As can be seen from the figure, at the coated nickel dam of the surface uniform of composite particles.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the XRD figure of nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles corresponding in embodiment 5.As can be seen from the figure: in 2 θ=44.5 °, 51.8 ° and 76.4 ° of places have diffraction peak to occur, (111), (200) and (220) three crystal faces of corresponding center of area cubic-crystal nickel, prove successfully to have plated metallic nickel on the surface of ultrahigh molecular weight polyethylene(UHMWPE) respectively.
Fig. 4 is nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles VSM graphic representation corresponding in embodiment 5.As can be seen from the figure, the saturation magnetization of composite particles reaches 7.5emu/g, and coercive force is 147Oe.
Embodiment
Embodiment 1:
Pre-treatment is carried out to ultrahigh molecular weight polyethylene(UHMWPE) powder surface, specifically comprises:
Alligatoring: join in 100ml coarsening solution by 2g ultrahigh molecular weight polyethylene(UHMWPE) powder, temperature is 25 DEG C, stirs 30min in ultrasonic water bath, washing;
Sensitization: join in 100ml sensitizing solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring, temperature is 25 DEG C, stirs 30min in ultrasonic water bath, washing;
Activation: join in 100ml activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, temperature is 25 DEG C, stirs 15min in ultrasonic water bath, washing, dry, for subsequent use.
Wherein the process for preparation of coarsening solution, sensitizing solution, activation solution is as follows:
Coarsening solution: take 30g potassium bichromate, joins in the container that 300ml distilled water is housed, and measures the vitriol oil of 700ml98wt% again, slowly add while stirring after it dissolves, after solution clarification, obtain coarsening solution.
Sensitizing solution: take 2g tin protochloride, joins in the container that 100ml distilled water is housed, and drips the concentrated hydrochloric acid of 1ml37wt%, after it dissolves completely, obtains sensitizing solution.
Activation solution: take 0.1g Palladous chloride, is dissolved in the concentrated hydrochloric acid of 1ml37wt%, adds 1000ml distilled water after stirring, and stirs until obtain activation solution after solution clarification.
To the nickel plating of ultrahigh molecular weight polyethylene(UHMWPE) powder chemistry, specific embodiment is: by above-mentioned pre-treatment and dried ultrahigh molecular weight polyethylene(UHMWPE) powder joins in the chemical plating fluid of 100ml, temperature is 40 DEG C, stir in ultrasonic water bath, the reductive agent liquid of 10ml is dropwise joined in plating solution, carry out the chemical nickel plating of 30min, carry out afterwards washing, suction filtration, oven dry, finally obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles.
The NiCl of specifically consisting of of above-mentioned middle chemical plating fluid: 10g/L
26H
2the C of O, 30g/L
6h
5na
3o
72H
2the NH of O, 100ml/L
3h
2o, solvent is distilled water.The NaH of specifically consisting of of reductive agent liquid: 20g/L
2pO
2h
2o, solvent is distilled water.
Embodiment 2:
Pre-treatment is carried out to ultrahigh molecular weight polyethylene(UHMWPE) powder surface, specifically comprises:
Alligatoring: join in 100ml coarsening solution by 2g ultrahigh molecular weight polyethylene(UHMWPE) powder, temperature is 30 DEG C, stirs 30min in ultrasonic water bath, washing;
Sensitization: join in 100ml sensitizing solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring, temperature is 30 DEG C, stirs 30min in ultrasonic water bath, washing;
Activation: join in 100ml activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, temperature is 30 DEG C, stirs 15min in ultrasonic water bath, washing, dry, for subsequent use.
Wherein the process for preparation of coarsening solution, sensitizing solution, activation solution is as follows:
Coarsening solution: take 30g potassium bichromate, joins in the container that 300ml distilled water is housed, and measures the vitriol oil of 700ml98wt% again, slowly add while stirring after it dissolves, after solution clarification, obtain coarsening solution.
Sensitizing solution: take 2g tin protochloride, joins in the container that 100ml distilled water is housed, and drips the concentrated hydrochloric acid of 1ml37wt%, after it dissolves completely, obtains sensitizing solution.
Activation solution: take 0.3g Palladous chloride, is dissolved in the concentrated hydrochloric acid of 1ml37wt%, adds 1000ml distilled water after stirring, and stirs until obtain activation solution after solution clarification.
To the nickel plating of ultrahigh molecular weight polyethylene(UHMWPE) powder chemistry, specific embodiment is: by pre-treatment and dried ultrahigh molecular weight polyethylene(UHMWPE) powder joins in 100ml chemical plating fluid, temperature is 50 DEG C, stir in ultrasonic water bath, the reductive agent liquid of 10ml is dropwise joined in plating solution, carry out the chemical nickel plating of 40min, carry out afterwards washing, suction filtration, oven dry, finally obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles.
The NiCl of specifically consisting of of above-mentioned middle chemical plating fluid: 20g/L
26H
2the C of O, 40g/L
6h
5na
3o
72H
2the NH of O, 150ml/L
3h
2o, solvent is distilled water.The NaH of specifically consisting of of reductive agent liquid: 30g/L
2pO
2h
2o, solvent is distilled water.
Embodiment 3:
Pre-treatment is carried out to ultrahigh molecular weight polyethylene(UHMWPE) powder surface, specifically comprises:
Alligatoring: join in 100ml coarsening solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder of 2g, temperature is 30 DEG C, stirs 40min in ultrasonic water bath, washing;
Sensitization: join in 100ml sensitizing solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring, temperature is 30 DEG C, stirs 40min in ultrasonic water bath, washing;
Activation: join in 100ml activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, temperature is 30 DEG C, stirs 15min in ultrasonic water bath, washing, dry, for subsequent use.
Wherein the process for preparation of coarsening solution, sensitizing solution, activation solution is as follows:
Coarsening solution: take 30g potassium bichromate, joins in the container that 300ml distilled water is housed, and measures the vitriol oil of 700ml98wt% again, slowly add while stirring after it dissolves, after solution clarification, obtain coarsening solution.
Sensitizing solution: take 2g tin protochloride, joins in the container that 100ml distilled water is housed, and drips the concentrated hydrochloric acid of 1ml37wt%, after it dissolves completely, obtains sensitizing solution.
Activation solution: take 0.5g Palladous chloride, is dissolved in the concentrated hydrochloric acid of 1ml37wt%, adds 1000ml distilled water after stirring, and stirs until obtain activation solution after solution clarification.
To the nickel plating of ultrahigh molecular weight polyethylene(UHMWPE) powder chemistry, specific embodiment is: by pre-treatment and dried ultrahigh molecular weight polyethylene(UHMWPE) powder joins in 100ml chemical plating fluid, temperature is 55 DEG C, stir in ultrasonic water bath, the reductive agent liquid of 10ml is dropwise joined in plating solution, carry out the chemical nickel plating of 50min, carry out afterwards washing, suction filtration, oven dry, finally obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles.
The NiCl of specifically consisting of of above-mentioned middle chemical plating fluid: 20g/L
26H
2the C of O, 50g/L
6h
5na
3o
72H
2the NH of O, 180ml/L
3h
2o, solvent is distilled water.The NaH of specifically consisting of of reductive agent liquid: 40g/L
2pO
2h
2o, solvent is distilled water.
Embodiment 4:
Pre-treatment is carried out to ultrahigh molecular weight polyethylene(UHMWPE) powder surface, specifically comprises:
Alligatoring: join in 100ml coarsening solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder of 2g, temperature is 30 DEG C, stirs 40min in ultrasonic water bath, washing;
Sensitization: join in 100ml sensitizing solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring, temperature is 30 DEG C, stirs 40min in ultrasonic water bath, washing;
Activation: join in 100ml activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, temperature is 30 DEG C, stirs 30min in ultrasonic water bath, washing, dry, for subsequent use.
Wherein the process for preparation of coarsening solution, sensitizing solution, activation solution is as follows:
Coarsening solution: take 30g potassium bichromate, joins in the container that 300ml distilled water is housed, and measures the vitriol oil of 700ml98wt% again, slowly add while stirring after it dissolves, after solution clarification, obtain coarsening solution.
Sensitizing solution: take 2g tin protochloride, joins in the container that 100ml distilled water is housed, and drips the concentrated hydrochloric acid of 1ml37wt%, after it dissolves completely, obtains sensitizing solution.
Activation solution: take 0.6g Palladous chloride, is dissolved in the concentrated hydrochloric acid of 1ml37wt%, adds 1000ml distilled water after stirring, and stirs until obtain activation solution after solution clarification.
To the nickel plating of ultrahigh molecular weight polyethylene(UHMWPE) powder chemistry, specific embodiment is: by pre-treatment and dried ultrahigh molecular weight polyethylene(UHMWPE) powder joins in 100ml chemical plating fluid, temperature is 60 DEG C, stir in ultrasonic water bath, 10ml reductive agent liquid is dropwise joined in plating solution, carry out the chemical nickel plating of 50min, carry out afterwards washing, suction filtration, oven dry, finally obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles.
The NiCl of specifically consisting of of above-mentioned middle chemical plating fluid: 30g/L
26H
2the C of O, 50g/L
6h
5na
3o
72H
2the NH of O, 200ml/L
3h
2o, solvent is distilled water.The NaH of specifically consisting of of reductive agent liquid: 55g/L
2pO
2h
2o, solvent is distilled water.
Embodiment 5:
Pre-treatment is carried out to ultrahigh molecular weight polyethylene(UHMWPE) powder surface, specifically comprises:
Alligatoring: join in 100ml coarsening solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder of 2g, temperature is 30 DEG C, stirs 50min in ultrasonic water bath, washing;
Sensitization: join in 100ml sensitizing solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring, temperature is 30 DEG C, stirs 50min in ultrasonic water bath, washing;
Activation: join in 100ml activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, temperature is 28 DEG C, stirs 30min in ultrasonic water bath, washing, dry, for subsequent use.
Wherein the process for preparation of coarsening solution, sensitizing solution, activation solution is as follows:
Coarsening solution: the potassium bichromate taking 30g, joins in the container that 300ml distilled water is housed, and measures the vitriol oil of 700ml98wt% again, slowly add while stirring after it dissolves, after solution clarification, obtain coarsening solution.
Sensitizing solution: take 2g tin protochloride, joins in the container that 100ml distilled water is housed, and drips the concentrated hydrochloric acid of 1ml37wt%, after it dissolves completely, obtains sensitizing solution.
Activation solution: take 0.7g Palladous chloride, is dissolved in the concentrated hydrochloric acid of 1ml37wt%, adds 1000ml distilled water after stirring, and stirs until obtain activation solution after solution clarification.
To the nickel plating of ultrahigh molecular weight polyethylene(UHMWPE) powder chemistry, specific embodiment is: by pre-treatment and dried ultrahigh molecular weight polyethylene(UHMWPE) powder joins in 100ml chemical plating fluid, temperature is 65 DEG C, stir in ultrasonic water bath, the reductive agent liquid of 10ml is dropwise joined in plating solution, carry out the chemical nickel plating of 55min, carry out afterwards washing, suction filtration, oven dry, finally obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles.
The NiCl of specifically consisting of of above-mentioned middle chemical plating fluid: 38g/L
26H
2the C of O, 60g/L
6h
5na
3o
72H
2the NH of O, 260ml/L
3h
2o, solvent is distilled water.The NaH of specifically consisting of of reductive agent liquid: 75g/L
2pO
2h
2o, solvent is distilled water.
Embodiment 6:
Pre-treatment is carried out to ultrahigh molecular weight polyethylene(UHMWPE) powder surface, specifically comprises:
Alligatoring: join in 100ml coarsening solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder of 2g, temperature is 30 DEG C, stirs 60min in ultrasonic water bath, washing;
Sensitization: join in 100ml sensitizing solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring, temperature is 28 DEG C, stirs 60min in ultrasonic water bath, washing;
Activation: join in 100ml activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, temperature is 30 DEG C, stirs 30min in ultrasonic water bath, washing drying for standby.
Wherein the process for preparation of coarsening solution, sensitizing solution, activation solution is as follows:
Coarsening solution: the potassium bichromate taking 30g, joins in the container that 300ml distilled water is housed, and measures the vitriol oil of 700ml98wt% again, slowly add while stirring after it dissolves, after solution clarification, obtain coarsening solution.
Sensitizing solution: take 2g tin protochloride, joins in the container that 100ml distilled water is housed, and drips the concentrated hydrochloric acid of 1ml37wt%, after it dissolves completely, obtains sensitizing solution.
Activation solution: take 0.8g Palladous chloride, is dissolved in the concentrated hydrochloric acid of 1ml37wt%, adds 1000ml distilled water after stirring, and stirs until obtain activation solution after solution clarification.
To the nickel plating of ultrahigh molecular weight polyethylene(UHMWPE) powder chemistry, specific embodiment is: by pre-treatment and dried ultrahigh molecular weight polyethylene(UHMWPE) powder joins in 100ml chemical plating fluid, temperature is 74 DEG C, stir in ultrasonic water bath, the reductive agent liquid of 10ml is dropwise joined in plating solution, carry out the chemical nickel plating of 55min, carry out afterwards washing, suction filtration, oven dry, finally obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles.
The NiCl of specifically consisting of of above-mentioned middle chemical plating fluid: 45g/L
26H
2the C of O, 80g/L
6h
5na
3o
72H
2the NH of O, 280ml/L
3h
2o, solvent is distilled water.The NaH of specifically consisting of of reductive agent liquid: 90g/L
2pO
2h
2o, solvent is distilled water.
Embodiment 7:
Pre-treatment is carried out to ultrahigh molecular weight polyethylene(UHMWPE) powder surface, specifically comprises:
Alligatoring: join in 100ml coarsening solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder of 2g, temperature is 28 DEG C, stirs 60min in ultrasonic water bath, washing;
Sensitization: join in 100ml sensitizing solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring, temperature is 30 DEG C, stirs 60min in ultrasonic water bath, washing;
Activation: join in 100ml activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, temperature is 30 DEG C, stirs 30min in ultrasonic water bath, washing drying for standby.
Wherein the process for preparation of coarsening solution, sensitizing solution, activation solution is as follows:
Coarsening solution: take 30g potassium bichromate, joins in the container that 300ml distilled water is housed, and measures the vitriol oil of 700ml98wt% again, slowly add while stirring after it dissolves, after solution clarification, obtain coarsening solution.
Sensitizing solution: take 2g tin protochloride, joins in the container that 100ml distilled water is housed, and drips the concentrated hydrochloric acid of 1ml37wt%, after it dissolves completely, obtains sensitizing solution.
Activation solution: take 1g Palladous chloride, is dissolved in the concentrated hydrochloric acid of 1ml37wt%, adds 1000ml distilled water after stirring, and stirs until obtain activation solution after solution clarification.
To the nickel plating of ultrahigh molecular weight polyethylene(UHMWPE) powder chemistry, specific embodiment is: by pre-treatment and dried ultrahigh molecular weight polyethylene(UHMWPE) powder joins in the chemical plating fluid of 100ml, temperature is 80 DEG C, stir in ultrasonic water bath, 10ml reductive agent liquid is dropwise joined in plating solution, carry out the chemical nickel plating of 60min, carry out afterwards washing, suction filtration, oven dry, finally obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles.
The NiCl of specifically consisting of of above-mentioned middle chemical plating fluid: 50g/L
26H
2the C of O, 100g/L
6h
5na
3o
72H
2the NH of O, 300ml/L
3h
2o, solvent is distilled water.The NaH of specifically consisting of of reductive agent liquid: 100g/L
2pO
2h
2o, solvent is distilled water.
The specific conductivity of following table composite particles obtained by embodiment one to embodiment seven
| Project | Specific conductivity (S/cm) |
| Embodiment 1 | 0.25S/cm |
| Embodiment 2 | 1.18S/cm |
| Embodiment 3 | 1.48S/cm |
| Embodiment 4 | 8.96S/cm |
| Embodiment 5 | 22.06S/cm |
| Embodiment 6 | 25.96S/cm |
| Embodiment 7 | 27.22S/cm |
Claims (3)
1. a ultrahigh molecular weight polyethylene(UHMWPE) powder surface chemical nickel plating method, is characterized in that, the steps include: that ultrahigh molecular weight polyethylene(UHMWPE) powder joins temperature is in the chemical plating fluid of 40 ~ 80 DEG C, and insulated and stirred mixes under ultrasonic water bath environment; Then reductive agent is dropwise added in mixed solution, constant temperature process 30 ~ 60min, afterwards it is washed, suction filtration, oven dry, obtain nickel plating ultrahigh molecular weight polyethylene(UHMWPE) composite particles;
Described chemical plating fluid is by the NiCl of 10 ~ 50g/L
26H
2the C of O, 30 ~ 100g/L
6h
5na
3o
72H
2the NH of O, 100 ~ 300ml/L
3h
2o and distilled water are formed, and reductive agent is by the NaH of 20 ~ 100g/L
2pO
2h
2o and distilled water are formed.
2. a kind of ultrahigh molecular weight polyethylene(UHMWPE) powder surface chemical nickel plating method according to claim 1, it is characterized in that, ultrahigh molecular weight polyethylene(UHMWPE) powder has carried out surface preparation before joining chemical plating fluid, and this pretreated method is:
(a) alligatoring: ultrahigh molecular weight polyethylene(UHMWPE) powder is joined in coarsening solution, 25 ~ 30 DEG C of thermostatic ultrasonic stirred in water bath 30 ~ 60min, washing;
(b) sensitization: the ultrahigh molecular weight polyethylene(UHMWPE) powder after alligatoring is joined in sensitizing solution, 25 ~ 30 DEG C of thermostatic ultrasonic stirred in water bath 30 ~ 60min, washing;
C () activates: join in activation solution by the ultrahigh molecular weight polyethylene(UHMWPE) powder after sensitization, 25 ~ 30 DEG C of thermostatic ultrasonic stirred in water bath 15 ~ 30min, washing, dry, for subsequent use.
3. a kind of ultrahigh molecular weight polyethylene(UHMWPE) powder surface chemical nickel plating method according to claim 2, it is characterized in that, described coarsening solution is by the potassium bichromate of 30g/L, and the 98wt% vitriol oil of 700ml/L and distilled water are formed; Sensitizing solution is by the tin protochloride of 20g/L, and the concentrated hydrochloric acid of the 37wt% of 10ml/L and distilled water are formed; Activation solution is by the Palladous chloride of 0.1 ~ 1g/L, and the concentrated hydrochloric acid of the 37wt% of 10ml/L and distilled water are formed.
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| CN106903306A (en) * | 2017-04-12 | 2017-06-30 | 合肥学院 | A kind of method that defect induced chemical depositing process prepares 3D printing metallic particles/polymer compound powder body |
| CN106903305A (en) * | 2017-04-12 | 2017-06-30 | 合肥学院 | A kind of preparation method of 3D printing metallic particles/inorganic nanoparticles/polymer compound powder body |
| CN106947960A (en) * | 2017-04-12 | 2017-07-14 | 合肥学院 | A kind of 3D printing preparation method of polymer/metal composite powder material |
| CN110918980A (en) * | 2019-12-16 | 2020-03-27 | 北京工商大学 | Electromagnetic shielding composite material and preparation method thereof |
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