CN106366409A - Ultra-high molecular weight polyethylene-graphene-nickel composite material and preparation method - Google Patents
Ultra-high molecular weight polyethylene-graphene-nickel composite material and preparation method Download PDFInfo
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- CN106366409A CN106366409A CN201610763277.9A CN201610763277A CN106366409A CN 106366409 A CN106366409 A CN 106366409A CN 201610763277 A CN201610763277 A CN 201610763277A CN 106366409 A CN106366409 A CN 106366409A
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Abstract
The invention relates to the field of functional composite materials, in particular to an ultra-high molecular weight polyethylene-graphene-nickel composite material with a high electromagnetic shielding performance and a preparation method. Composite materials used for preparing the composite materials are nickel-plated graphene-coated ultra-high molecular weight polyethylene particles taking metallic nickel as a shell structure and taking graphene-coated ultra-high molecular weight polyethylene particles as a core, wherein the content of the graphene-coated ultra-high molecular weight polyethylene particles ranges from 97.42 vol% to 98.91 vol%, the content of metallic nickel ranges from 1.09 vol% to 2.58 vol%, and the content of graphene in the composite material is at least 0.028 vol%. By preparing the composite material with the isolation structure, on the condition that the content the metallic nickel and the content of the graphene are extremely low, the electric conductivity and electromagnetic shielding performance of the composite material can be significantly improved, and the purposes of the high electric conductivity and the high electromagnetic shielding performance of the composite material are achieved.
Description
Technical field
The present invention relates to functional composite material field, specifically a kind of super high molecular weight with high capability of electromagnetic shielding is gathered
Ethylene/graphene/nickel composite and preparation method.
Background technology
With the high speed development of modern electronics industry, electronic apparatus and radio communication are commonly used, electromagnetic radiation
Oneself becomes the another big public hazards after sound pollution, atmospheric pollution, water pollution, solid waste pollution.Electromagnetic wave not only disturbs
The normal operation of various electronic equipments, threaten the information security of communication equipment, and pole can be produced to the healthy of the mankind
Big harm.The method eliminating electromagnetic wave harm at present is mainly shielded to it using electromagnetic shielding material.Therefore, explore height
Effect electromagnetic shielding material becomes problem in the urgent need to address.Compared with conventional metals shielding material, conducting polymer composite wood
Material (cpcs) is had the advantages that low cost, electrical conductivity are controlled, is had wide range of applications due to it, has become as most application prospect
Electromagnetic shielding material [yan et al.nanotechnology, 2014,25,145705；mohammed h et al.,
carbon,2013,60,146-156].
Research currently for cpcs mostly concentrates on and with carbon system (white carbon black, carbon fiber, CNT, Graphene etc.) is
Composite preparation aspect [hu et al., carbon, the 2012,50,4596-4599 of filler；yan et al.,
adv.fun.mater.,2015,25,559-566].Carbon system filler has that raw material sources are wide, density is low, environmental stability good, power
The advantages of learn excellent performance.However, because carbon system filler self-conductance rate is not high, and easily reunite in the base, poor dispersion,
Therefore when preparing high electromagnet shield effect composite, required addition is larger.Metal packing has excellent electric conductivity,
But density is big, high cost the shortcomings of so that its application is extremely restricted.Additionally, carbon system filler and the magnetic metal packing of tool
Shielding electromagnetic waves mechanism is also not quite similar.The conductive network that carbon system filler is formed in the base can by reflection, refraction and
Electromagnetic wave absorption plays the effect of electromagnetic shielding；And have magnetic metal packing and can pass through resistance loss, dielectric loss
And magnetizing mediums is lost come electromagnetic wave of decaying.
During preparation cpcs, reduce amount of filler, the composite having more low excess effusion value with acquisition becomes works as
Front research emphasis.So far, the conducting polymer composite material (s-cpcs) that preparation has isolation structure is to reduce filler
Consumption most efficient method [pang et al., progress in polymer science, 2014,39,1908-1933].
Therefore, preparation can have carbon system filler under low sizing content simultaneously and the electromagnetic shielding of metal packing advantage is multiple
Condensation material is significant.
Content of the invention
The present invention is in order to obtain the electromagnetic screen having carbon system filler and metal packing advantage concurrently while reducing filer content
Cover performance, there is provided a kind of ultra-high molecular weight polyethylene/graphite alkene/nickel composite material with high capability of electromagnetic shielding and its system
Preparation Method.
The present invention is achieved by the following technical solutions: a kind of ultra-high molecular weight polyethylene/graphite alkene/nickel composite wood
Material, prepare composite compound particle be with metallic nickel as shell structurre, graphene coated ultra-high molecular weight polyethylene is as core
Ni-coated graphite alkene cladding ultra-high molecular weight polyethylene particle, the wherein content of graphene coated ultra-high molecular weight polyethylene particle
For 97.42vol%～98.91vol%, the content of metallic nickel is 1.09vol%～2.58vol%, and wherein Graphene is compound
Content in material is at least 0.028vol%.
In order to prove that composite of the present invention has high connductivity, high capability of electromagnetic shielding, inventor will be described compound
Particle, nickel plating ultra-high molecular weight polyethylene particle, graphene coated ultra-high molecular weight polyethylene particle, graphene coated nickel plating surpass
High molecular weight polyethylene particle is respectively put in mould, hot pressing 10min molding under 180 DEG C, 10mpa, then multiple to four kinds
The performance of condensation material is studied, and result of the test is referring to table 1.Can will become apparent from from table: in the total content of Graphene and nickel
In the case of identical, Graphene and metallic nickel have obvious synergistic effect for composite system, can make composite
Electrical conductivity and electromagnet shield effect are obviously improved.
The performance comparison of the dissimilar composite of table 1
In order to further elaborate the compound particle of composite of the present invention, the invention provides nickel plating stone
Black alkene coats the preparation method of ultra-high molecular weight polyethylene particle, specifically comprises the processes of: graphene oxide and super high molecular weight are gathered
Ethylene is distributed in ethanol solution, heats and constant temperature stirring evaporation, and after drying, heating, through hydrazine hydrate reduction, is filtered, washs, dried
Dry, obtain the ultra-high molecular weight polyethylene particle of graphene coated；By dried graphene coated ultra-high molecular weight polyethylene
Particle is added in chemical plating fluid, at 40-80 DEG C, stirs, reductant solution is added dropwise to chemical plating in ultrasonic water bath
In liquid, carry out the chemical nickel plating of 30-60min, carry out afterwards washing, sucking filtration, drying, finally give and prepare above-mentioned composite
Compound particle；
Above-mentioned middle chemical plating fluid is by the nicl of 10～50g/l2·6h2O, the c of 30～100g/l6h5na3o7·2h2o、
The nh of 100～300ml/l3·h2O and distilled water are made；Reducing agent is by the nah of 20～100g/l2po2·h2O and steaming
Distilled water is made.
Above-mentioned Ni-coated graphite alkene coats in the preparation method of ultra-high molecular weight polyethylene particle, and the superelevation of graphene coated is divided
The step of sub- weight northylen particle is known steps, and its parameter can adopt parameter known in the art, and therefore here is no longer detailed
Repeat.
When being embodied as, graphene coated ultra-high molecular weight polyethylene particle tackles particle before carrying out nickel chemical plating technology
Carry out surface preparation, this pretreatment includes sensitized treatment and activation processing 2 procedure.And according to routine, the technology of this area
Personnel include roughening treatment, sensitized treatment and activation processing to needing the material carrying out chemical plating to generally require the pretreatment carrying out
3 procedures.But, the graphene layer in graphene coated ultra-high molecular weight polyethylene of the present invention greatly improves superelevation
The surface activity of molecular weight polyethylene, it is not necessary to carry out roughening treatment, greatly simplify chemical plating process.
Preferably, the invention provides a kind of preparation method of ultra-high molecular weight polyethylene/graphite alkene/nickel composite material,
Specifically comprises the processes of: above-mentioned compound particle is put in mould, hot pressing 5-10min molding under 180-200 DEG C, 10-15mpa,
Obtain the ultra-high molecular weight polyethylene/graphite alkene/nickel electromagnetic shielding composite wood with isolation structure and high capability of electromagnetic shielding
Material.In mold process, ultra-high molecular weight polyethylene high viscosity in the molten state limits the diffusion of shell metallic nickel, rises
Good pile-up and isolation effect are arrived, Flexible graphene layer compensate for the deficiency of fragility nickel dam easy fracture simultaneously, final acquisition
There is the controlled ultra-high molecular weight polyethylene/graphite alkene/nickel composite material of isolation structure, capability of electromagnetic shielding.
The present invention passes through the composite that preparation has isolation structure, in the extremely low situation of metallic nickel and Graphene content
Under, the electrical conductivity of composite and capability of electromagnetic shielding can be significantly improved it is achieved that composite high connductivity, high electromagnetic shielding
The target of performance, meanwhile, by changing nickel content, can adjust electrical conductivity and the capability of electromagnetic shielding of composite, obtain
Electrical conductivity and capability of electromagnetic shielding are stable, the ultra-high molecular weight polyethylene/graphite alkene/nickel electromagnetic shielding composite wood of favorable reproducibility
Material.
Brief description
Fig. 1 is electrical conductivity and the nickel content graph of relation of ultra-high molecular weight polyethylene/graphite alkene/nickel composite material.From
In figure can be seen that the increase with nickel content in material, and the electrical conductivity of composite increases therewith, and show and typically lead
Electric percolation.The electrical conductivity highest of composite can reach 2679s/m.
Fig. 2 is respectively graphene coated ultra-high molecular weight polyethylene particle and Ni-coated graphite alkene cladding superhigh molecular weight polyethylene
The stereoscan photograph of alkene compound particle (Graphene content is 0.1vol%, and nickel content is 2.58vol%).Can from figure (a)
To find out, cover the Graphene nonwoven fabric from filaments of fold on ultra-high molecular weight polyethylene surface, it can be seen that passing through to change from figure (b)
Learn plating, define the fine and close nickel dam of uniformly continuous on the surface of ultra-high molecular weight polyethylene/graphite alkene compound particle.Figure c, d divide
A, the partial enlarged drawing of b Wei not schemed.
Fig. 3 be prepared ultra-high molecular weight polyethylene/graphite alkene/nickel composite material (Graphene content is 0.1vol%,
Nickel content be 2.58vol%) stereoscan photograph.It can be seen that conductive nickel layer is not all sent out in process from figure a
Give birth to displacement and come off, be still located at particle interface, and define perfect conductive network, figure b is the partial enlarged drawing of figure a.
Fig. 4 is the prepared electromagnet shield effect of ultra-high molecular weight polyethylene/graphite alkene/nickel composite material and frequency
Relation curve.It can be seen that when Graphene content is 0.1vol%, the electromagnet shield effect of composite is with nickel
The increase of content and be stepped up, highest can reach 88.16db.
Specific embodiment
Embodiment one:
The graphene oxide for 0.1:99.9 for the volume ratio and ultra-high molecular weight polyethylene are distributed in ethanol solution, 90 DEG C
Lower constant temperature stirring is evaporated, and obtained sample is dried, and is then passed through 90 DEG C of stirring reduction 4h of hydrazine hydrate solution, filter, wash,
Dry, obtain the ultra-high molecular weight polyethylene particle of graphene coated.
Pretreatment is carried out to the surface of the ultra-high molecular weight polyethylene particle of graphene coated, comprising: sensitization: by Graphene
The ultra-high molecular weight polyethylene particle of cladding is added in 100ml sensitizing solution, at 30 DEG C, stirs 15min, wash in ultrasonic water bath
Wash；Activation: the ultra-high molecular weight polyethylene particle after sensitization is added in 100ml activating solution, at 30 DEG C, in ultrasonic water bath
Stirring 15min, washs drying for standby.
Wherein sensitizing solution, activating solution process for preparation as follows:
Sensitizing solution: weigh the stannous chloride of 2g, be added in 100ml distilled water, the concentrated hydrochloric acid of the 37wt% of Deca 1ml,
Sensitizing solution is obtained after it is completely dissolved.
Activating solution: in the concentrated hydrochloric acid of the 37wt% Palladous chloride. of 0.1g being dissolved in 1ml, be stirring evenly and then adding into 1000ml
Distilled water, stirs until obtaining activating solution after solution clarification.
Process to the ultra-high molecular weight polyethylene chemistry of particles nickel plating of graphene coated: will activate and dried graphite
The ultra-high molecular weight polyethylene particle of alkene cladding is added in the chemical plating fluid of 100ml, at 80 DEG C, stirs in ultrasonic water bath,
The reducing agent liquid of 10ml is added dropwise in plating solution, carries out the chemical nickel plating of 60min, washing, sucking filtration, drying, obtain afterwards
The ultra-high molecular weight polyethylene compound particle of metallic nickel and graphene coated.
The specifically comprising of above-mentioned middle chemical plating fluid: the nicl of 50g/l2·6h2The c of o, 30g/l6h5na3o7·2h2O,
The nh of 150ml/l3·h2O, solvent is distilled water.The specifically comprising of reducing agent liquid: the nah of 100g/l2po2·h2O, solvent is
Distilled water.
The ultra-high molecular weight polyethylene particle of obtained metallic nickel and graphene coated is added in mould, 200
DEG C, hot pressing 10min molding under 15mpa, obtain having the ultra-high molecular weight polyethylene of isolation structure and high capability of electromagnetic shielding/
Graphene/nickel composite.
Embodiment two:
The graphene oxide for 0.1:99.9 for the volume ratio and ultra-high molecular weight polyethylene are distributed in ethanol solution, 60 DEG C
Lower constant temperature stirring is evaporated, and after obtained sample is dried, through 80 DEG C of stirring reduction 3h of hydrazine hydrate solution, filters, washs, dries
Dry, obtain the ultra-high molecular weight polyethylene particle of graphene coated.
Pretreatment is carried out to the surface of the ultra-high molecular weight polyethylene particle of graphene coated, comprising: sensitization: by Graphene
The ultra-high molecular weight polyethylene particle of cladding is added in 100ml sensitizing solution, at 25 DEG C, stirs 30min, wash in ultrasonic water bath
Wash；Activation: the ultra-high molecular weight polyethylene particle after sensitization is added in 100ml activating solution, temperature is 30 DEG C, in ultrasonic water
Stir 30min in bath, wash drying for standby.
Wherein sensitizing solution, the process for preparation of activating solution is as follows:
Sensitizing solution: weigh the stannous chloride of 2g, be added in 100ml distilled water, the concentrated hydrochloric acid of the 37wt% of Deca 1ml,
Obtain sensitizing solution after it is completely dissolved.
Activating solution: in the concentrated hydrochloric acid of the 37wt% Palladous chloride. of 0.5g being dissolved in 1ml, be stirring evenly and then adding into 1000ml
Distilled water, stirs until obtaining activating solution after solution clarification.
Process to the ultra-high molecular weight polyethylene chemistry of particles nickel plating of graphene coated: will activate and dried graphite
The ultra-high molecular weight polyethylene particle of alkene cladding is added in the chemical plating fluid of 100ml, at 60 DEG C, stirs in ultrasonic water bath,
The reducing agent liquid of 10ml is added dropwise in plating solution, carries out the chemical nickel plating of 60min, washing, sucking filtration, drying, obtain afterwards
The ultra-high molecular weight polyethylene compound particle of metallic nickel and graphene coated.
The specifically comprising of above-mentioned middle chemical plating fluid: the nicl of 40g/l2·6h2The c of o, 50g/l6h5na3o7·2h2O,
The nh of 100ml/l3·h2O, solvent is distilled water.The specifically comprising of reducing agent liquid: the nah of 50g/l2po2·h2O, solvent is
Distilled water.
The ultra-high molecular weight polyethylene particle of obtained metallic nickel and graphene coated is added in mould, 180
DEG C, hot pressing 10min molding under 10mpa, obtain having the ultra-high molecular weight polyethylene of isolation structure and high capability of electromagnetic shielding/
Graphene/nickel composite.
Embodiment three:
The graphene oxide for 0.1:99.9 for the volume ratio and ultra-high molecular weight polyethylene are distributed in ethanol solution, 70 DEG C
Lower constant temperature stirring is evaporated, and after obtained sample is dried, through 90 DEG C of stirring reduction 4h of hydrazine hydrate solution, filters, washs, dries
Dry, obtain the ultra-high molecular weight polyethylene particle of graphene coated.
Pretreatment is carried out to the surface of the ultra-high molecular weight polyethylene particle of graphene coated, comprising: sensitization: by Graphene
The ultra-high molecular weight polyethylene particle of cladding is added in 100ml sensitizing solution, at 25 DEG C, stirs 60min, wash in ultrasonic water bath
Wash；Activation: the ultra-high molecular weight polyethylene particle after sensitization is added in 100ml activating solution, at 30 DEG C, in ultrasonic water bath
Stirring 60min, washs drying for standby.
Wherein sensitizing solution, the process for preparation of activating solution is as follows:
Sensitizing solution: weigh the stannous chloride of 2g, be added in 100ml distilled water, the concentrated hydrochloric acid of the 37wt% of Deca 1ml,
Obtain sensitizing solution after it is completely dissolved.
Activating solution: in the concentrated hydrochloric acid of the 37wt% Palladous chloride. of 0.5g being dissolved in 1ml, be stirring evenly and then adding into 1000ml
Distilled water, stirs until obtaining activating solution after solution clarification.
Process to the ultra-high molecular weight polyethylene chemistry of particles nickel plating of graphene coated: will activate and dried graphite
The ultra-high molecular weight polyethylene particle of alkene cladding is added in the chemical plating fluid of 100ml, at 70 DEG C, stirs in ultrasonic water bath,
The reducing agent liquid of 10ml is added dropwise in plating solution, carries out the chemical nickel plating of 40min, carry out afterwards washing, sucking filtration, drying,
Obtain the ultra-high molecular weight polyethylene compound particle of metallic nickel and graphene coated.
The specifically comprising of above-mentioned middle chemical plating fluid: the nicl of 30g/l2·6h2The c of o, 100g/l6h5na3o7·2h2O,
The nh of 200ml/l3·h2O, solvent is distilled water.The specifically comprising of reducing agent liquid: the nah of 80g/l2po2·h2O, solvent is
Distilled water.
The ultra-high molecular weight polyethylene powder of obtained metallic nickel and graphene coated is added in mould, 190
DEG C, hot pressing 5min molding under 15mpa, obtain having the ultra-high molecular weight polyethylene of isolation structure and high capability of electromagnetic shielding/
Graphene/nickel composite.
Example IV:
The graphene oxide for 0.1:99.9 for the volume ratio and ultra-high molecular weight polyethylene are distributed in ethanol solution, 80 DEG C
Lower constant temperature stirring is evaporated, and after obtained sample is dried, through 85 DEG C of stirring reduction 3.5h of hydrazine hydrate solution, filters, washs, dries
Dry, obtain the ultra-high molecular weight polyethylene particle of graphene coated.
Pretreatment is carried out to the surface of the ultra-high molecular weight polyethylene particle of graphene coated, comprising: sensitization: by Graphene
The ultra-high molecular weight polyethylene particle of cladding is added in 100ml sensitizing solution, and temperature is 25 DEG C, stirs in ultrasonic water bath
50min, washing；Activation: the ultra-high molecular weight polyethylene particle after sensitization is added in 100ml activating solution, temperature is 30 DEG C,
Stir 50min in ultrasonic water bath, wash drying for standby.
Wherein sensitizing solution, the process for preparation of activating solution is as follows:
Sensitizing solution: weigh the stannous chloride of 2g, be added in 100ml distilled water, the concentrated hydrochloric acid of the 37wt% of Deca 1ml,
Obtain sensitizing solution after it is completely dissolved.
Activating solution: in the concentrated hydrochloric acid of the 37wt% Palladous chloride. of 1g being dissolved in 1ml, be stirring evenly and then adding into 1000ml and steam
Distilled water, stirs until obtaining activating solution after solution clarification.
Process to the ultra-high molecular weight polyethylene powder chemistry nickel plating of graphene coated: will activate and dried graphite
The ultra-high molecular weight polyethylene particle of alkene cladding is added in the chemical plating fluid of 100ml, at 40 DEG C, stirs in ultrasonic water bath,
The reducing agent liquid of 10ml is added dropwise in plating solution, carries out the chemical nickel plating of 40min, washing, sucking filtration, drying, obtain afterwards
The ultra-high molecular weight polyethylene compound particle of metallic nickel and graphene coated.
The specifically comprising of above-mentioned middle chemical plating fluid: the nicl of 10g/l2·6h2The c of o, 30g/l6h5na3o7·2h2O,
The nh of 100ml/l3·h2O, solvent is distilled water.The specifically comprising of reducing agent liquid: the nah of 20g/l2po2·h2O, solvent is
Distilled water.
The ultra-high molecular weight polyethylene powder of obtained metallic nickel and graphene coated is added in mould, 185
DEG C, hot pressing 8min molding under 12mpa, obtain having the ultra-high molecular weight polyethylene of isolation structure and high capability of electromagnetic shielding/
Graphene/nickel composite.
Embodiment five:
The graphene oxide for 0.028:99.972 for the volume ratio and ultra-high molecular weight polyethylene are distributed in ethanol solution,
Constant temperature stirring evaporation at 80 DEG C, after obtained sample is dried, through 85 DEG C of stirring reduction 3.5h of hydrazine hydrate solution, filters, washes
Wash, dry, obtain the ultra-high molecular weight polyethylene particle of graphene coated.
Pretreatment is carried out to the surface of the ultra-high molecular weight polyethylene particle of graphene coated, comprising: sensitization: by Graphene
The ultra-high molecular weight polyethylene particle of cladding is added in 100ml sensitizing solution, and temperature is 28 DEG C, stirs in ultrasonic water bath
50min, washing；Activation: the ultra-high molecular weight polyethylene particle after sensitization is added in 100ml activating solution, temperature is 25 DEG C,
Stir 60min in ultrasonic water bath, wash drying for standby.
Wherein sensitizing solution, the process for preparation of activating solution is as follows:
Sensitizing solution: weigh the stannous chloride of 2g, be added in 100ml distilled water, the concentrated hydrochloric acid of the 37wt% of Deca 1ml,
Obtain sensitizing solution after it is completely dissolved.
Activating solution: in the concentrated hydrochloric acid of the 37wt% Palladous chloride. of 1g being dissolved in 1ml, be stirring evenly and then adding into 1000ml and steam
Distilled water, stirs until obtaining activating solution after solution clarification.
Process to the ultra-high molecular weight polyethylene chemistry of particles nickel plating of graphene coated: will activate and dried graphite
The ultra-high molecular weight polyethylene particle of alkene cladding is added in the chemical plating fluid of 100ml, at 40 DEG C, stirs in ultrasonic water bath,
The reducing agent liquid of 10ml is added dropwise in plating solution, carries out the chemical nickel plating of 30min, carry out afterwards washing, sucking filtration, drying,
Obtain the ultra-high molecular weight polyethylene compound particle of metallic nickel and graphene coated.
The specifically comprising of above-mentioned middle chemical plating fluid: the nicl of 10g/l2·6h2The c of o, 30g/l6h5na3o7·2h2O,
The nh of 300ml/l3·h2O, solvent is distilled water.The specifically comprising of reducing agent liquid: the nah of 20g/l2po2·h2O, solvent is
Distilled water.
The ultra-high molecular weight polyethylene particle of obtained metallic nickel and graphene coated is added in mould, 185
DEG C, hot pressing 8min molding under 12mpa, obtain having the ultra-high molecular weight polyethylene of isolation structure and high capability of electromagnetic shielding/
Graphene/nickel composite.
Table 2 embodiment one arrives the electrical conductivity of composite obtained by embodiment five
Claims (4)
1. a kind of ultra-high molecular weight polyethylene/graphite alkene/nickel composite material is it is characterised in that prepare the compound grain of composite
Son be with metallic nickel as shell structurre, graphene coated ultra-high molecular weight polyethylene as core Ni-coated graphite alkene cladding supra polymer
Weight northylen particle, the wherein content of graphene coated ultra-high molecular weight polyethylene particle are 97.42 vol% ~ 98.91vol%,
The content of metallic nickel is 1.09vol% ~ 2.58 vol%, and wherein Graphene content in the composite is at least 0.028
vol%.
2. a kind of Ni-coated graphite alkene coat ultra-high molecular weight polyethylene particle preparation method it is characterised in that specifically comprises the processes of:
Graphene oxide and ultra-high molecular weight polyethylene are distributed in ethanol solution, heat and constant temperature stirring evaporation, after drying, heating
Through hydrazine hydrate reduction, filter, wash, dry, obtain the ultra-high molecular weight polyethylene particle of graphene coated；By dried stone
Black alkene cladding ultra-high molecular weight polyethylene particle is added in chemical plating fluid, at 40-80 DEG C, stirs in ultrasonic water bath, will be also
Former agent solution is added dropwise in chemical plating fluid, carries out the chemical nickel plating of 30-60 min, carry out afterwards washing, sucking filtration, drying,
Finally give the compound particle of composite described in preparation claim 1；
Above-mentioned middle chemical plating fluid is by the nicl of 10 ~ 50 g/l2·6h2O, the c of 30 ~ 100 g/l6h5na3o7·2h2O, 100 ~ 300
The nh of ml/l3·h2O and distilled water are made；Reducing agent is by the nah of 20 ~ 100 g/l2po2·h2O and distilled water are made
's.
3. a kind of Ni-coated graphite alkene according to claim 2 coats the preparation method of ultra-high molecular weight polyethylene particle, its
It is characterised by, graphene coated ultra-high molecular weight polyethylene particle had carried out surface preparation before being added to chemical plating fluid,
The method of this pretreatment is sensitized treatment and activation processing.
4. a kind of preparation method of ultra-high molecular weight polyethylene/graphite alkene/nickel composite material it is characterised in that specifically comprises the processes of:
Claim 1 or 2 or 3 described compound particles are put in mould, hot pressing 5-10 min under 180-200 DEG C, 10-15mpa
Molding, obtains having isolation structure and the ultra-high molecular weight polyethylene/graphite alkene/nickel electromagnetic shielding of high capability of electromagnetic shielding is multiple
Condensation material.
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