CN104690291A - Preparation method of graphene-nano-nickel composite wave-absorbing material - Google Patents
Preparation method of graphene-nano-nickel composite wave-absorbing material Download PDFInfo
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- CN104690291A CN104690291A CN201510016339.5A CN201510016339A CN104690291A CN 104690291 A CN104690291 A CN 104690291A CN 201510016339 A CN201510016339 A CN 201510016339A CN 104690291 A CN104690291 A CN 104690291A
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Abstract
The invention discloses a preparation method of a graphene-nano-nickel composite wave-absorbing material. The method comprises steps as follows: graphite oxide is prepared and dispersed, and a graphene sheet layer surface is successfully loaded with nano nickel ions with a solvothermal method. The method is convenient, and the wave-absorbing material with the excellent wave-absorbing performance can be prepared.
Description
Technical field
The present invention relates to absorbing material field, in particular the preparation method of a kind of Graphene-nano nickel composite wave-suction material.
Background technology
Along with science and technology and the development of electronics industry, increasing electromagenetic wave radiation is present in around us, show through research, excessive electromagenetic wave radiation occurs, except obstacle, even may bring out the serious disease comprising all kinds of cancer except causing nervous system, immune system, reproductive system and blood circulation system etc.Be in for a long time in electromagnetic wave environment, damaged by electromagnetic wave in human body and the damage of the tissue of the self-regeneration that is not able to do in time and organ can become dynamic disease becomes because of long term accumulation, can threat to life time serious.
Graphene, the single layer structure due to its uniqueness makes it have the features such as ultralight density, large specific area, dielectric constant that electric conductivity is excellent and high, becomes a kind of novel wave-absorbing material.In addition, the chemical bond that oxidized graphenic surface exposes in a large number more easily produces the dielectric relaxor of outer-shell electron and attenuates electromagnetic waves under the effect of electromagnetic field, for Graphene is inhaling the applications expanding prospect in ripple field, at graphenic surface loaded with nano nickel ion, not only can improve magnetism of material energy, the magnetic loss of reinforced composite, be conducive to the impedance matching of composite, and nano nickel ion particles is again stacking in three-dimensional graphite structure in dry run from medium minimizing Graphene as diaphragm, considerable effect is played to stable graphene film Rotating fields.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provides the preparation method of a kind of Graphene-nano nickel composite wave-suction material.
Technical scheme of the present invention is as follows:
A preparation method for Graphene-nano nickel composite wave-suction material, is characterized in that, its step is as follows:
Step one, made by graphite and be of a size of 50-200 order and obtain graphite powder, being added to mass fraction is afterwards in the hydrochloric acid solution of 35%, stirs 30min, adopts deionized water repeatedly to rinse afterwards and makes pH value be neutral, dry stand-by;
By graphite powder, potassium peroxydisulfate and P
2o
5add in the concentrated sulfuric acid, form mixture, the pH value of the mixture formed is 1.5, and this mixture is stirred 1-2h at 60 DEG C, then 2-4h is stirred with at the ramp to 80 of 5 DEG C/min DEG C, finally be warming up to 87 DEG C with 2 DEG C/min and stir 1-2h, then adopt this mixture of distilled water diluting, the pH value of this mixture is diluted to 3.6, distilled water is adopted to filter after placing 36h, make mixture pH value be 6-7, after carry out drying at room temperature, described graphite powder, potassium peroxydisulfate, P
2o
5be 1-3: 1-2: 1-2: 5-10 with the mass ratio of the concentrated sulfuric acid;
Joined in red fuming nitric acid (RFNA) by dried mixture and stir 45-60min, make pH value be 2-4, the mass ratio of described dried mixture and red fuming nitric acid (RFNA) is 1-4: 50-100, and after stirring, at-8 DEG C, first time adds KMnO
4, stir 30min, at being cooled to-12 DEG C afterwards, second time adds KMnO
4, stir 30min, at being finally cooled to-15 DEG C, third time adds KMnO
4, stir 20min, obtain the graphite mixture of pre-oxidation, described first time adds KMnO
4, second time adds KMnO
4kMnO is added with third time
4mass ratio be 1: 2: 3, described dried mixture and total KMnO
4ratio be 1-2: 10-15.
After the graphite mixture obtaining pre-oxidation is filtered also drying, be positioned in Muffle furnace and heat, heat treated temperature, for process 10-20s at 1100 DEG C, processes 15-20s at 1150 DEG C, processes 20-30s, obtain expanded graphite at 1180 DEG C;
Step 2, puts into incubator by expanded graphite made for step one and is warmed up to 40 DEG C, reaction 3h, subsequently, add the first distilled water with the consistent amount of graphite mixture volume of pre-oxidation, then react 2.5h, by incubator temperature to 40 DEG C, again add after-fractionating water and H
2o
2reaction 10-60min, the amount of described after-fractionating water is 1-1.5 times of the first distilled water, after-fractionating water and H
2o
2volume ratio be 4-20: 1, carry out centrifugation 10min, rotating speed 8000 ~ 10000r/min after reaction terminates, centrifugation afterproduct hydrochloric acid solution washs, the volume of this hydrochloric acid solution is 10-50 times of centrifugation afterproduct volume, and finally dialysis obtains graphite oxide in 7-8 days; Add N-hydroxysuccinimide after graphite oxide being adopted methyl-sulfoxide ultrasonic dissolution and make surface conditioning agent by oneself and stir 2h at 35 DEG C, product carries out suction filtration, washing, oven dry, namely obtains surface-treated graphite oxide.
Step 3, surface grafting, by step 3 obtain the mixed with polymers of surface-treated graphite oxide and required grafting, and be heated to 80-95 DEG C and pass into nitrogen, and the solution added containing quadrivalent cerium ion, stirring reaction 2-4h, after filtration, washing, dry, obtain described polymer graft graphite oxide, the mass ratio of the polymer of described graphite oxide and required grafting is 1-2: 1-3, the polymer of required grafting is by methyl methacrylate, GMA, dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate composition, described methyl methacrylate, GMA, the mass ratio of dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate is 1: 1: 2: 1,
Step 4, dispersion
The ethylene glycol ultrasonic disperse putting into 500ml after the graphite 1-2g of the surface grafting of step 3 gained is carried out lyophilization at-10-30 DEG C with 1-10g PEO-PPOX-PEO triblock copolymer in the lump forms uniform first dispersion liquid; Simultaneously by 20-40ml protochloride nickel ethylene glycol solution (0.1mol/ml), 6 ~ 25g polyvinylpyrrolidone and 10 ~ 50g NH
4ac is dissolved in the ethylene glycol of 500-1000mL and forms the second dispersion liquid, by the first dispersion liquid and the second dispersion liquid mix and blend, and regulates with ammoniacal liquor, makes it to become the settled solution that pH value is 9-11;
Step 5, the settled solution that 100ml step 3 obtains is put into reactor, after sealing, be heated to 130 DEG C, insulation 2h, 150 DEG C are warming up to afterwards with the heating rate of 2-4 DEG C/min, insulation 4h, 200 DEG C are warming up to afterwards with the heating rate of 3-6 DEG C/min, insulation 3h, then 180 DEG C of insulation 2h are cooled to the cooling rate of 5-7 DEG C/min, finally be warming up to 200 DEG C with the heating rate of 3-6 DEG C/min again, insulation 7h, after question response completes, reactor is taken out, make it cool to room temperature, described cooling rate is 3-6 DEG C/min, by the powder centrifugation 10min of gained, rotating speed 8000 ~ 10000r/min, absolute ethyl alcohol and deionized water is adopted respectively to wash three times, at 50 ~ 70 DEG C of vacuum drying 24h, obtain the first product,
Be added in the solution of DBSA by 5g first product and 5-10g aniline monomer, ultrasonic disperse 65min, form the second product, the mass ratio of described first product and DBSA is 1-1.5: 8-15;
Be dissolved in by 3g ammonium persulfate in 80-120ml distilled water, be slowly added drop-wise in the second product, stirring reaction 15h, after reaction terminates, suction filtration, use distilled water, ethanol washed product colourless to filtrate respectively, 50 ~ 70 DEG C of vacuum drying 24 ~ 36h, obtain absorbing material.
The ratio of the g of graphite oxide described in step 2, methyl-sulfoxide ml, N-hydroxysuccinimide g and self-control surface conditioning agent g is 0.2-0.5: 20-25: 2-5: 0.1-05, described self-control surface conditioning agent is made up of dicyclohexylcarbodiimide, dodecyl sodium sulfate, kayexalate and polyacrylic acid, and described dicyclohexylcarbodiimide, dodecyl sodium sulfate, kayexalate and polyacrylic mass ratio are 1: 1: 2: 3.
In described described step 2, the concentration of hydrochloric acid is the hydrochloric acid solution of volume ratio 1: 10.
This absorbing material is laminar nano composite wave-suction material, the growth of nano nickel uniform particle is in graphene sheet layer, on graphene sheet layer, load particle diameter is about the nano nickel particle of 20-100nm, and polyaniline-coated has the graphene sheet layer surface of nano nickel particle in load.
In absorbing material obtained by the present invention between Graphene and nano nickel ion with chemical bonds; in conjunction with very tight; can not make to depart from because of the stirring etc. in later stage; chemical property is also stablized; polyaniline-coated has the graphene sheet layer surface protection nickel ion of nano nickel particle not oxidized in load, the electrical conductivity of absorbing material of the present invention: 4.17 × 10
-3-8.27 × 10
-3s/cm, saturation magnetization is 15.7-38.5emu/g.
Applicant prepares pre-oxidation graphite through large quantity research step one of the present invention and adopts different heating rates to be warming up to required whipping temp, stirring stage by stage under different whipping temps, and adds KMnO at different temperature stage by stage
4contribute to the preparation of pre-oxidation graphite, make oxidation more thoroughly be higher than common disposable stirring and add KMnO
410-15%, and be conducive to the formation of later stage Graphene;
In step 2, further surface treatment is done for graphite oxide, adopt homemade surface conditioning agent, the surperficial shortcoming low for metal ion affinity of graphite oxide enough can be made up after adding, increase the load capacity of surface nickel ion, also make nickel ion below more even in the dispersion of graphite surface, the specific area of its graphite reaches 35-37m simultaneously
2/ g;
Graphite through grafting process just has fabulous dissolubility in the later stage, and be more easy to be added in high molecular polymer matrix, the associativity of the nano composite material formed is more outstanding.
During adopting different heating rates to be warming up to required temperature, through insulation of once lowering the temperature, more contribute to the formation of graphene-supported nano nickel absorbing material, make the absorbing property of the final absorbing material formed stronger, be better than the performance 5-15% of the absorbing material that commonsense method is formed, and the tri compound absorbing material performance formed is more stable;
The present invention without the need to using nitrogen or oxygen protection, without the need to hot conditions, can effectively reduce synthesis cost, and effectively raising the dispersing uniformity of nano particle in graphite, improve the performance of product in preparation process;
The electrical conductivity of the graphene-supported nano nickel absorbing material of the present invention: 4.17 × 10
-3-8.27 × 10
-3s/cm, saturation magnetization is 15.7-38.5emu/g.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
A preparation method for Graphene-nano nickel composite wave-suction material, is characterized in that, its step is as follows:
Step one, made by graphite and be of a size of 50-200 order and obtain graphite powder, being added to mass fraction is afterwards in the hydrochloric acid solution of 35%, stirs 30min, adopts deionized water repeatedly to rinse afterwards and makes pH value be neutral, dry stand-by;
By graphite powder, potassium peroxydisulfate and P
2o
5add in the concentrated sulfuric acid, form mixture, the pH value of the mixture formed is 1.5, and this mixture is stirred 1-2h at 60 DEG C, then 2-4h is stirred with at the ramp to 80 of 5 DEG C/min DEG C, finally be warming up to 87 DEG C with 2 DEG C/min and stir 1-2h, then adopt this mixture of distilled water diluting, the pH value of this mixture is diluted to 3.6, distilled water is adopted to filter after placing 36h, make mixture pH value be 6-7, after carry out drying at room temperature, described graphite powder, potassium peroxydisulfate, P
2o
5be 1-3: 1-2: 1-2: 5-10 with the mass ratio of the concentrated sulfuric acid;
Joined in red fuming nitric acid (RFNA) by dried mixture and stir 45-60min, make pH value be 2-4, the mass ratio of described dried mixture and red fuming nitric acid (RFNA) is 1-4: 50-100, and after stirring, at-8 DEG C, first time adds KMnO
4, stir 30min, at being cooled to-12 DEG C afterwards, second time adds KMnO
4, stir 30min, at being finally cooled to-15 DEG C, third time adds KMnO
4, stir 20min, obtain the graphite mixture of pre-oxidation, described first time adds KMnO
4, second time adds KMnO
4kMnO is added with third time
4mass ratio be 1: 2: 3, described dried mixture and total KMnO
4ratio be 1-2: 10-15.
After the graphite mixture obtaining pre-oxidation is filtered also drying, be positioned in Muffle furnace and heat, heat treated temperature, for process 10-20s at 1100 DEG C, processes 15-20s at 1150 DEG C, processes 20-30s, obtain expanded graphite at 1180 DEG C;
Step 2, puts into incubator by expanded graphite made for step one and is warmed up to 40 DEG C, reaction 3h, subsequently, add the first distilled water with the consistent amount of graphite mixture volume of pre-oxidation, then react 2.5h, by incubator temperature to 40 DEG C, again add after-fractionating water and H
2o
2reaction 10-60min, the amount of described after-fractionating water is 1-1.5 times of the first distilled water, after-fractionating water and H
2o
2volume ratio be 4-20: 1, carry out centrifugation 10min, rotating speed 8000 ~ 10000r/min after reaction terminates, centrifugation afterproduct hydrochloric acid solution washs, doubly, finally dialysis obtains graphite oxide in 7-8 days to the 10-50 of volume side's centrifugation afterproduct volume of this hydrochloric acid solution; Add N-hydroxysuccinimide after graphite oxide being adopted methyl-sulfoxide ultrasonic dissolution and make surface conditioning agent by oneself and stir 2h at 35 DEG C, product carries out suction filtration, washing, oven dry, namely obtains surface-treated graphite oxide.
Step 3, surface grafting, by step 3 obtain the mixed with polymers of surface-treated graphite oxide and required grafting, and be heated to 80-95 DEG C and pass into nitrogen, and the solution added containing quadrivalent cerium ion, stirring reaction 2-4h, after filtration, washing, dry, obtain described polymer graft graphite oxide, the mass ratio of the polymer of described graphite oxide and required grafting is 1-2: 1-3, the polymer of required grafting is by methyl methacrylate, GMA, dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate composition, described methyl methacrylate, GMA, the mass ratio of dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate is 1: 1: 2: 1,
Step 4, dispersion
The ethylene glycol ultrasonic disperse putting into 500ml after the graphite 1-2g of the surface grafting of step 3 gained is carried out lyophilization at-10-30 DEG C with 1-10g PEO-PPOX-PEO triblock copolymer in the lump forms uniform first dispersion liquid; Simultaneously by 20-40ml protochloride nickel ethylene glycol solution (0.1mol/ml), 6 ~ 25g polyvinylpyrrolidone and 10 ~ 50g NH
4ac is dissolved in the ethylene glycol of 500-1000mL and forms the second dispersion liquid, by the first dispersion liquid and the second dispersion liquid mix and blend, and regulates with ammoniacal liquor, makes it to become the settled solution that pH value is 9-11;
Step 5, the settled solution that 100ml step 3 obtains is put into reactor, after sealing, be heated to 130 DEG C, insulation 2h, 150 DEG C are warming up to afterwards with the heating rate of 2-4 DEG C/min, insulation 4h, 200 DEG C are warming up to afterwards with the heating rate of 3-6 DEG C/min, insulation 3h, then 180 DEG C of insulation 2h are cooled to the cooling rate of 5-7 DEG C/min, finally be warming up to 200 DEG C with the heating rate of 3-6 DEG C/min again, insulation 7h, after question response completes, reactor is taken out, make it cool to room temperature, described cooling rate is 3-6 DEG C/min, by the powder centrifugation 10min of gained, rotating speed 8000 ~ 10000r/min, absolute ethyl alcohol and deionized water is adopted respectively to wash three times, at 50 ~ 70 DEG C of vacuum drying 24h, obtain the first product,
Be added in the solution of DBSA by 5g first product and 5-10g aniline monomer, ultrasonic disperse 65min, form the second product, the mass ratio of described first product and DBSA is 1-1.5: 8-15;
Be dissolved in by 3g ammonium persulfate in 80-120ml distilled water, be slowly added drop-wise in the second product, stirring reaction 15h, after reaction terminates, suction filtration, use distilled water, ethanol washed product colourless to filtrate respectively, 50 ~ 70 DEG C of vacuum drying 24 ~ 36h, obtain absorbing material.
The ratio of the g of graphite oxide described in step 2, methyl-sulfoxide ml, N-hydroxysuccinimide g and self-control surface conditioning agent g is 0.2-0.5: 20-25: 2-5: 0.1-05, described self-control surface conditioning agent is made up of dicyclohexylcarbodiimide, dodecyl sodium sulfate, kayexalate and polyacrylic acid, and described dicyclohexylcarbodiimide, dodecyl sodium sulfate, kayexalate and polyacrylic mass ratio are 1: 1: 2: 3.
In described described step 2, the concentration of hydrochloric acid is the hydrochloric acid solution of volume ratio 1: 10.
This absorbing material is laminar nano composite wave-suction material, the growth of nano nickel uniform particle is in graphene sheet layer, on graphene sheet layer, load particle diameter is about the nano nickel particle of 20-100nm, and polyaniline-coated has the graphene sheet layer surface of nano nickel particle in load.
Obtained thickness to be the reflection loss peak of the sample of 2mm the be Absorber Bandwidth of 21.9dB, below reflection loss-10dB, up to 4.6GHz, effectively can absorb the electromagnetic wave of this frequency range.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (4)
1. a preparation method for Graphene-nano nickel composite wave-suction material, is characterized in that, its step is as follows:
Step one, made by graphite and be of a size of 50-200 order and obtain graphite powder, being added to mass fraction is afterwards in the hydrochloric acid solution of 35%, stirs 30min, adopts deionized water repeatedly to rinse afterwards and makes pH value be neutral, dry stand-by;
By graphite powder stand-by for aforementioned oven dry, potassium peroxydisulfate and P
2o
5add in the concentrated sulfuric acid, form mixture, the pH value of the mixture formed is 1.5, and this mixture is stirred 1-2h at 60 DEG C, then 2-4h is stirred with at the ramp to 80 of 5 DEG C/min DEG C, finally be warming up to 87 DEG C with 2 DEG C/min and stir 1-2h, then adopt this mixture of distilled water diluting, the pH value of this mixture is diluted to 3.6, distilled water is adopted to filter after placing 36h, make mixture pH value be 6-7, after carry out drying at room temperature, described graphite powder, potassium peroxydisulfate, P
2o
5be 1-3: 1-2: 1-2: 5-10 with the mass ratio of the concentrated sulfuric acid;
Joined in red fuming nitric acid (RFNA) by dried mixture and stir 45-60min, make pH value be 2-4, the mass ratio of described dried mixture and red fuming nitric acid (RFNA) is 1-4: 50-100, and after stirring, at-8 DEG C, first time adds KMnO
4, stir 30min, at being cooled to-12 DEG C afterwards, second time adds KMnO
4, stir 30min, at being finally cooled to-15 DEG C, third time adds KMnO
4, stir 20min, obtain the graphite mixture of pre-oxidation, described first time adds KMnO
4, second time adds KMnO
4kMnO is added with third time
4mass ratio be 1: 2: 3, described dried mixture and total KMnO
4ratio be 1-2: 10-15.
After the graphite mixture obtaining pre-oxidation is filtered also drying, be positioned in Muffle furnace and heat, heat treated temperature, for process 10-20s at 1100 DEG C, processes 15-20s at 1150 DEG C, processes 20-30s, obtain expanded graphite at 1180 DEG C;
Step 2, puts into incubator by expanded graphite made for step one and is warmed up to 40 DEG C, reaction 3h, subsequently, add the first distilled water with the consistent amount of graphite mixture volume of pre-oxidation, then react 2.5h, by incubator temperature to 40 DEG C, again add after-fractionating water and H
2o
2reaction 10-60min, the amount of described after-fractionating water is 1-1.5 times of the first distilled water, after-fractionating water conservancy H
2o
2volume ratio be 4-20: 1, carry out centrifugation 10min, rotating speed 8000 ~ 10000r/min after reaction terminates, centrifugation afterproduct hydrochloric acid solution washs, the volume of this hydrochloric acid solution is 10-50 times of centrifugation afterproduct volume, and finally dialysis obtains graphite oxide in 7-8 days; Add N-hydroxysuccinimide after graphite oxide being adopted methyl-sulfoxide ultrasonic dissolution and make surface conditioning agent by oneself and stir 2h at 35 DEG C, product carries out suction filtration, washing, oven dry, namely obtains surface-treated graphite oxide.
Step 3, surface grafting, by step 3 obtain the mixed with polymers of surface-treated graphite oxide and required grafting, and be heated to 80-95 DEG C and pass into nitrogen, and the solution added containing quadrivalent cerium ion, stirring reaction 2-4h, after filtration, washing, dry, obtain described polymer graft graphite oxide, the mass ratio of the polymer of described graphite oxide and required grafting is 1-2: 1-3, the polymer of required grafting is by methyl methacrylate, GMA, dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate composition, described methyl methacrylate, GMA, the mass ratio of dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate is 1: 1: 2: 1,
Step 4, dispersion
The ethylene glycol ultrasonic disperse putting into 500ml after the graphite 1-2g of the surface grafting of step 3 gained is carried out lyophilization at-10-30 DEG C with 1-10g PEO-PPOX-PEO triblock copolymer in the lump forms uniform first dispersion liquid; Simultaneously by 20-40ml protochloride nickel ethylene glycol solution (0.1mol/ml), 6 ~ 25g polyvinylpyrrolidone and 10 ~ 50gNH
4ac is dissolved in the ethylene glycol of 500-1000mL and forms the second dispersion liquid, by the first dispersion liquid and the second dispersion liquid mix and blend, and regulates with ammoniacal liquor, makes it to become the settled solution that pH value is 9-11;
Step 5, the settled solution that 100ml step 3 obtains is put into reactor, after sealing, be heated to 130 DEG C, insulation 2h, 150 DEG C are warming up to afterwards with the heating rate of 2-4 DEG C/min, insulation 4h, 200 DEG C are warming up to afterwards with the heating rate of 3-6 DEG C/min, insulation 3h, then 180 DEG C of insulation 2h are cooled to the cooling rate of 5-7 DEG C/min, finally be warming up to 200 DEG C with the heating rate of 3-6 DEG C/min again, insulation 7h, after question response completes, reactor is taken out, make it cool to room temperature, described cooling rate is 3-6 DEG C/min, by the powder centrifugation 10min of gained, rotating speed 8000 ~ 10000r/min, absolute ethyl alcohol and deionized water is adopted respectively to wash three times, at 50 ~ 70 DEG C of vacuum drying 24h, obtain the first product,
Be added in the solution of DBSA by 5g first product and 5-10g aniline monomer, ultrasonic disperse 65min, form the second product, the mass ratio of described first product and DBSA is 1-1.5: 8-15;
Be dissolved in by 3g ammonium persulfate in 80-120ml distilled water, be slowly added drop-wise in the second product, stirring reaction 15h, after reaction terminates, suction filtration, use distilled water, ethanol washed product colourless to filtrate respectively, 50 ~ 70 DEG C of vacuum drying 24 ~ 36h, obtain absorbing material.
2. preparation method according to claim 1, it is characterized in that, the ratio of the g of graphite oxide described in step 2, methyl-sulfoxide ml, N-hydroxysuccinimide g and self-control surface conditioning agent g is 0.2-0.5: 20-25: 2-5: 0.1-05, described self-control surface conditioning agent is made up of dicyclohexylcarbodiimide, dodecyl sodium sulfate, kayexalate and polyacrylic acid, and described dicyclohexylcarbodiimide, dodecyl sodium sulfate, kayexalate and polyacrylic mass ratio are 1: 1: 2: 3.
3. preparation method according to claim 1, is characterized in that, in described described step 2, the concentration of hydrochloric acid is the hydrochloric acid solution of volume ratio 1: 10.
4. nano combined absorbing material according to claim 1, it is characterized in that, this absorbing material is laminar nano composite wave-suction material, the growth of nano nickel uniform particle is in graphene sheet layer, on graphene sheet layer, load particle diameter is about the nano nickel particle of 20-100nm, and polyaniline-coated has the graphene sheet layer surface of nano nickel particle in load.
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CN107325283A (en) * | 2017-07-21 | 2017-11-07 | 张娟 | A kind of soluble polyaniline doped graphene cladding nano nickel composite wave-suction material and preparation method thereof |
CN115488332A (en) * | 2022-08-26 | 2022-12-20 | 雅安百图高新材料股份有限公司 | Nickel-coated graphite powder and application thereof in electromagnetic shielding material |
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CN105834435B (en) * | 2015-12-30 | 2020-01-21 | 中国航空工业集团公司北京航空材料研究院 | Wet mixing preparation method of nickel-based high-temperature olefin alloy powder |
CN106517960A (en) * | 2016-11-10 | 2017-03-22 | 过冬 | Graphene/barium-titanate-composite-powder-modified wave-absorbing cement |
CN107325283A (en) * | 2017-07-21 | 2017-11-07 | 张娟 | A kind of soluble polyaniline doped graphene cladding nano nickel composite wave-suction material and preparation method thereof |
CN115488332A (en) * | 2022-08-26 | 2022-12-20 | 雅安百图高新材料股份有限公司 | Nickel-coated graphite powder and application thereof in electromagnetic shielding material |
CN115488332B (en) * | 2022-08-26 | 2023-08-18 | 雅安百图高新材料股份有限公司 | Nickel-coated graphite powder and application thereof in electromagnetic shielding material |
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