CN107216689A - A kind of dopamine surface is modified two-dimension nano materials and preparation method - Google Patents
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0003—Compounds of molybdenum
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
Abstract
Two-dimension nano materials and preparation method are modified the present invention relates to a kind of dopamine surface, the two-dimension nano materials that a kind of poly-dopamine is wrapped up are prepared for by single step reaction.The present invention solves traditional two-dimension nano materials in interstitial (water, organic matter) the problem of bad dispersibility.This feature preparation method provides a kind of method that dopamine surface is modified two-dimension nano materials, two-dimension nano materials surface is successfully introduced into functional group (hydroxyl and amino) through DOPA and not only provides the active group for continuing to react after amine-modified, and increases the compatibility between interstitial and two-dimension nano materials.Therefore, this invention has great scientific meaning, and huge actual application value is there is in terms of friction-resistant composite material, lubricant grease, heat-conductive composite material production.
Description
Technical field
The invention belongs to composite and technical field of fine, it is related to a kind of dopamine surface and is modified two-dimensional nano material
Material and preparation method.
Background technology
Two-dimension nano materials (molybdenum disulfide, tungsten disulfide, two selenizing molybdenums, two tungsten selenides, titanium carbide, boron nitride) are due to it
Unique structure is all the study hotspot of researcher all the time, in the field such as conduction, heat conduction, rub resistance, electromagnetic shielding table
Reveal outstanding performance.
Domestic and international many researchers both know about, and two-dimension nano materials have class graphene-structured, are showed in terms of friction
Go out excellent characteristic.Therefore, two-dimension nano materials and high molecular polymer, resin are combined by many researchers, are prepared
Many composites, these materials show excellent performance in terms of rub resistance.But, because two-dimension nano materials are all
Inorganic matter, it is the problem of poor compatibility always occurs when with organic high molecular polymer, resin progress, final to cause again
Two-dimension nano materials disperse uneven in condensation material, cause the performance of composite undesirable.In addition, boron nitride comes out in 100
Many years ago, earliest application is the hexagonal boron nitride as high-temperature lubricant, h-BN not only its structure but also its performance also with stone
Ink is very much like, and itself is pure white, so being commonly called as:White graphite.Recent research indicate that, boron nitride shows outstanding person in terms of heat conduction
The performance gone out, as current study hotspot.But the bottleneck studied at present is how to improve boron nitride in the composite
Dispersiveness.
The content of the invention
The technical problem to be solved
In order to avoid the shortcomings of the prior art, the present invention propose a kind of dopamine surface be modified two-dimension nano materials and
Preparation method.
Technical scheme
A kind of dopamine surface is modified two-dimension nano materials, it is characterised in that component includes dopamine and two-dimensional nano material
Material, the mass percent that wherein dopamine occupies is 17~37%, and surplus is two-dimension nano materials.The two-dimension nano materials exist
Acted under specific reaction condition with dopamine, finally cause its surface fully wrapped around by poly-dopamine.
The two-dimension nano materials be graphene, molybdenum disulfide, tungsten disulfide, two selenizing molybdenums, two tungsten selenides, titanium carbide or
Boron nitride.
It is a kind of to prepare the method that the dopamine surface is modified two-dimension nano materials, it is characterised in that step is as follows:
Step 1:Trishydroxymethylaminomethane is dissolved in deionized water, the pH for then adding watery hydrochloric acid regulation solution is
7.5-9.5;
Step 2:Two-dimension nano materials powder and straight alcohol are added into ultrasonic disperse 30-60min in above-mentioned system to be formed
Mixed solution;
Step 3:Dopamine hydrochloride is added in mixed liquor, control system temperature is between 15-35 DEG C, stirring reaction
10-15 hours
Step 4:The solution of reflection is centrifuged and obtains solid powder, washs many with deionized water and ethanol respectively
Secondary, freeze-drying, obtained black solid powder is the nanometer powder two-dimension nano materials that poly-dopamine is wrapped up.
Beneficial effect
A kind of dopamine surface proposed by the present invention is modified two-dimension nano materials and preparation method, is prepared by single step reaction
A kind of two-dimension nano materials of poly-dopamine parcel.It is (water, organic in interstitial that the present invention solves traditional two-dimension nano materials
Thing) in bad dispersibility the problem of.This feature preparation method provides a kind of method that dopamine surface is modified two-dimension nano materials,
Two-dimension nano materials surface is successfully introduced into functional group (hydroxyl and amino) through DOPA and not only provided after amine-modified continues what is reacted
Compatibility between active group, and increase interstitial and two-dimension nano materials.Therefore, this invention is anticipated with great science
Justice, huge actual application value is had in terms of friction-resistant composite material, lubricant grease, heat-conductive composite material production.
Embodiment
In conjunction with embodiment, the invention will be further described:
Preparation method is sketched by taking graphene as an example:
First, 1.2114g trishydroxymethylaminomethanes are dissolved in 150mL deionized waters, pH is adjusted with watery hydrochloric acid (1M)
≈7.5-9.5.Then, 0.5g graphene powders and 50mL straight alcohols are added to ultrasonic disperse 30-60min in above-mentioned system.Most
Afterwards, 0.4g Dopamine hydrochlorides are added in mixed liquor, and control system temperature is between 15-35 DEG C, stirring reaction 10-15 hours.
Stop reaction centrifuging, washed respectively with deionized water and ethanol, is freeze-dried, obtain the graphene two of poly-dopamine parcel
Dimension nano material.
Embodiment 1:
First, 1.2114g trishydroxymethylaminomethanes are dissolved in 150mL deionized waters, pH is adjusted with watery hydrochloric acid (1M)
=8.5, continue to stir 20min.Then, 1g makes molybdenum disulfide powder by oneself and 50mL straight alcohols are added to ultrasound point in above-mentioned system
Dissipate 60min.Finally, 0.4g Dopamine hydrochlorides are weighed to be added in mixed liquor, 10min are quickly stirred, control system temperature is 20
DEG C or so, stirring reaction 12 hours.Stop reaction and be centrifugally separating to obtain black solid powder, washed respectively with deionized water and ethanol
Wash 3 times, be freeze-dried, obtained black solid powder is the molybdenum disulfide two-dimension nano materials of poly-dopamine parcel.
Embodiment 2:
First, 2g trishydroxymethylaminomethanes are dissolved in 250mL deionized waters, pH=8.5 are adjusted with watery hydrochloric acid (1M),
Continue to stir 20min.Then, boron nitride white powder and 50mL straight alcohols after 1g is peeled off through ultrasound are added in above-mentioned system
Ultrasonic disperse 40min.Finally, 0.8g Dopamine hydrochlorides are weighed to be added in mixed liquor, 10min, control system temperature is quickly stirred
Degree is in 20 DEG C or so, stirring reaction 15 hours.Stop reaction and be centrifugally separating to obtain black solid powder, with deionized water and ethanol
Wash 3 times respectively, freeze-drying, obtained black solid powder is the boron nitride two-dimension nano materials of poly-dopamine parcel.
Embodiment 3:
First, 1.2114g trishydroxymethylaminomethanes are dissolved in 150mL deionized waters, pH is adjusted with watery hydrochloric acid (1M)
=8.5, continue to stir 20min.Then, 0.8g makes titanium carbide grey powder by oneself and 50mL straight alcohols are added in above-mentioned system and surpassed
Sound disperses 60min.Finally, 0.4g Dopamine hydrochlorides are weighed to be added in mixed liquor, 10min, control system temperature is quickly stirred
In 20 DEG C or so, stirring reaction 12 hours.Stop reaction and be centrifugally separating to obtain black solid powder, with deionized water and ethanol point
Xi Di not be 3 times, freeze-drying, obtained black solid powder is the titanium carbide two-dimension nano materials of poly-dopamine parcel.
Embodiment 4:
First, 1.2114g trishydroxymethylaminomethanes are dissolved in 150mL deionized waters, pH is adjusted with watery hydrochloric acid (1M)
=8.5, continue to stir 20min.Then, 0.4g makes graphene powder by oneself and 50mL straight alcohols are added to ultrasound point in above-mentioned system
Dissipate 60min.Finally, 0.4g Dopamine hydrochlorides are weighed to be added in mixed liquor, 10min are quickly stirred, control system temperature is 25
DEG C or so, stirring reaction 12 hours.Stop reaction and be centrifugally separating to obtain black solid powder, washed respectively with deionized water and ethanol
Wash 3 times, be freeze-dried, obtained black solid powder is the graphene two-dimension nano materials of poly-dopamine parcel.
Claims (3)
1. a kind of dopamine surface is modified two-dimension nano materials, it is characterised in that component includes dopamine and two-dimension nano materials,
The mass percent that wherein dopamine occupies is 17~37%, and surplus is two-dimension nano materials.
2. dopamine surface is modified two-dimension nano materials according to claim 1, it is characterised in that:The two-dimension nano materials
For graphene, molybdenum disulfide, tungsten disulfide, two selenizing molybdenums, two tungsten selenides, titanium carbide or boron nitride.
3. a kind of prepare the method that dopamine surface described in claim 1 or 2 is modified two-dimension nano materials, it is characterised in that step
It is as follows:
Step 1:Trishydroxymethylaminomethane is dissolved in deionized water, the pH for then adding watery hydrochloric acid regulation solution is 7.5-
9.5;
Step 2:Two-dimension nano materials powder and straight alcohol are added to ultrasonic disperse 30-60min formation mixing in above-mentioned system
Solution;
Step 3:Dopamine hydrochloride is added in mixed liquor, control system temperature is between 15-35 DEG C, stirring reaction 10-15
Hour
Step 4:The solution of reflection is centrifuged and obtains solid powder, is washed repeatedly with deionized water and ethanol respectively,
Freeze-drying, obtained black solid powder is the nanometer powder two-dimension nano materials that poly-dopamine is wrapped up.
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CN108172782A (en) * | 2017-12-13 | 2018-06-15 | 郑州大学 | A kind of preparation method and application with shell-core structure carbon package porous oxidation Asia cobalt nano material |
CN108251195A (en) * | 2017-12-29 | 2018-07-06 | 赵建平 | A kind of preparation method of binding type solid dry lubricant |
CN108408780A (en) * | 2018-03-12 | 2018-08-17 | 南京邮电大学 | A kind of Transition-metal dichalcogenide nanometer sheet and preparation method thereof of poly-dopamine modification |
CN108531029A (en) * | 2018-04-28 | 2018-09-14 | 福建宸琦新材料科技有限公司 | A kind of dopamine coats the preparation method of three-dimensional porous graphene/acrylic ester aquosity anticorrosive paint |
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