CN104152971A - Method for depositing nano-particles on surface of insulating non-woven material - Google Patents
Method for depositing nano-particles on surface of insulating non-woven material Download PDFInfo
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- CN104152971A CN104152971A CN201410384066.5A CN201410384066A CN104152971A CN 104152971 A CN104152971 A CN 104152971A CN 201410384066 A CN201410384066 A CN 201410384066A CN 104152971 A CN104152971 A CN 104152971A
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Abstract
The invention provides a method for assembling nano-particles on the surface of insulating non-woven material by virtue of the electrophoresis process of the nano-particles and the interception effect of the non-woven material. Firstly, the nano-particles are dispersed in water, and subjected to ultrasonic dispersion treatment to obtain nano-particle dispersion liquid; secondly, the insulating non-woven material is placed in the nano-particle dispersion liquid, and located between a positive pole and a negative pole, which are connected with a direct-current electric field; after the power is switched on, electronegative or electropositive nano-particles move from one pole to the other pole in the water solution under the effect of the electric field, and are intercepted by the surface and interior fibers of the non-woven material. The method assembles the nano-particles on the surface of the insulating non-woven material by virtue of the interception and adsorption effects of the non-woven material, and has the advantages of wide application range, simplicity in operation, low cost and the like.
Description
Technical field
The invention belongs to the preparing technical field of matrix material, particularly a kind of preparation method of complex nonwoven filtering material.
Background technology
Nonwoven material surface fiber distributes mixed and disorderly, and pore texture is more, and particulate matter is had to good interception and sieving action, is a kind of novel filter material.But existing non-woven filter material is not ideal to the filter effect of airborne small size particle, the problem that exists filtering accuracy and filtration resistance to condition each other.The nano particles such as Graphene with high absorption property are assembled into nonwoven material surface, can in the situation that not increasing filtration resistance, improve the filtering accuracy of filtering material.
Nano material (such as Graphene, carbon nanotube, nano titanium oxide, nano silicon etc.) has high-specific surface area, high mechanical strength, is easy to the advantages such as modification, can well the various molecules of adsorption and desorption, atom and particulate matter.Therefore, the nanomaterial assemblies such as Graphene are had to good application prospect to filtering material surface to strengthen its strainability.At present, the nano particle of microcosmic is incorporated into macroscopical nonwoven material surface and has several different methods, the most frequently used is pickling process and spraying method.Yet dipping and spraying method are to utilize simple physical adsorption, exist nano particle easily to come off, and nano particle are in the unequal shortcoming of nonwoven material surface arrangement.In addition to the above methods, electrophoretic deposition is also the method at fabric or nonwoven material surface deposition nano particle of relatively commonly using, but the method requires fabric or nonwoven material self to be necessary for conductor, and a utmost point that need to be using fabric or nonwoven material as electrode.For non-conductive fabric or nonwoven material, cannot apply, this has just limited the use range of the method greatly.
The present invention utilizes the electrophoresis of nano particle between DC electric field positive and negative electrode and the filtering effect of nonwoven material, has proposed a kind of method at insulation nonwoven material surface-assembled nano particle.
Summary of the invention
Configuration concentration is 1.0 * 10
-5the nano particle of～1.0mg/ml (as graphene oxide or the carboxylic carbon nano-tube etc.) aqueous solution, ultrasonic dispersion certain hour, obtains finely dispersed suspension.
By the conductor of two connection direct supply positive and negative electrode, be placed in the dispersion liquid of nano particle, insulation nonwoven material is placed between positive and negative electrode.The nano grain surfaces such as the Graphene after functionalization or carbon nanotube contain the functional groups such as abundant hydroxyl, carboxyl or amino, in the aqueous solution, present electronegativity or electropositivity, under the effect of 1～1000V DC electric field, nano particle is moving to another Ghandler motion by a utmost point, be subject to the obstruction of nonwoven material, nonwoven material is tackled nano particle at its fiber surface as " filter screen ", has realized the assembling of nano particle on nonwoven material surface.After processing 1～60min, taking-up is dry.
Characteristic of the present invention is: electrophoretic deposition technique is in the past only applicable to electro-conductive material, and general fabric or nonwoven material are all non-conductors.The nano material deposition technique that present method provides, for non-conductive nonwoven material, is with a wide range of applications.The advantages such as the method also has easy and simple to handle, and cost is low, environmental protection.
Embodiment
Below in conjunction with specific embodiment, the method for insulation nonwoven material surface-assembled nano particle provided by the invention is elaborated.
Embodiment 1:
The graphite oxide powder of 0.1g is dispersed in 1000ml deionized water, ultrasonic dispersion 1 hour, then process 30min with Ultrasonic cell smash, obtain the finely dispersed graphite oxide aqueous solution of 0.1mg/ml.
The positive and negative electrode that two stainless steel sheets is connected respectively to direct supply, is placed in and fills graphite oxide aqueous solution electrophoresis chamber both sides.Polyester needled punched nonwoven material is placed between positive and negative electrode and is fixed, apart from anodal about 1cm, apart from negative pole 6cm.To pole plate, apply the volts DS of 12V, conduction time 5min.Powered-down, takes out nonwoven material, the polyester composite nonwoven material of graphene oxide that has been drying to obtain surface-assembled.
Embodiment 2:
By the carbon nanotube dispersed of 2g nitration mixture oxide treatment, in 2000ml deionized water, ultrasonic dispersion 1 hour, obtains the finely dispersed oxide/carbon nanometer tube aqueous solution of 1.0mg/ml.
The positive and negative electrode that two stainless steel sheets is connected respectively to direct supply, is placed in and fills oxide/carbon nanometer tube aqueous solution electrophoresis chamber both sides.Polypropylene fibre melt-blown non-woven material is placed between positive and negative electrode, apart from anodal about 2cm, apart from negative pole 15cm, and fixing.Apply the volts DS of 60V, conduction time 20min.Powered-down, takes out nonwoven material, the polypropylene fibre composite nonwoven material of oxide/carbon nanometer tube that has been drying to obtain surface-assembled.
Embodiment 3:
The titania nanoparticles that 10mg amino functional is processed is dispersed in 500ml deionized water, and ultrasonic dispersion 2 hours, obtains the finely dispersed titanium dioxide aqueous solution of 0.02mg/ml.
The positive and negative electrode that two stainless steel sheets is connected respectively to direct supply, is placed in the electrophoresis chamber both sides of filling the titanium dioxide aqueous solution.Spandex nonwovens is placed between positive and negative electrode, apart from anodal about 30cm, apart from negative pole 3cm, and fixing.Apply the volts DS of 200V, conduction time 50min.Powered-down, takes out nonwoven material, the spandex composite nonwoven material of titania nanoparticles that has been drying to obtain surface-assembled.
Claims (4)
1. in a method for insulation nonwoven material surface deposition nano particle, it is characterized in that comprising following steps:
Configuration is containing the aqueous solution of nano particle, electrode is placed in to the device containing nanoparticles solution, and the nonwoven material of insulation is placed between two electrodes, electrode is connected respectively to the positive and negative electrode of direct supply, energising is processed after certain hour, takes out nonwoven material dry.
2. a kind of method at insulation nonwoven material surface deposition nano particle according to claim 1, is characterized in that depositing base is the nonwoven material of insulation, comprises the nonwoven materials such as polyester, polypropylene fibre, spandex.
3. a kind of method at insulation nonwoven material surface deposition nano particle according to claim 1, is characterized in that nano particle is functionalization graphene, carbon nanotube and titanium dioxide etc., and the concentration of nano particle in the aqueous solution is 1.0 * 10
-5～1.0mg/ml.
4. a kind of method at insulation nonwoven material surface deposition nano particle according to claim 1, is characterized in that electrophoretic deposition power supply used is direct supply, and voltage is 1～1000V, and depositing time is 1～60min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410384066.5A CN104152971B (en) | 2014-08-01 | 2014-08-01 | A kind of method in insulation non-woven material surface deposition nano particle |
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| CN201410384066.5A CN104152971B (en) | 2014-08-01 | 2014-08-01 | A kind of method in insulation non-woven material surface deposition nano particle |
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| CN104152971A true CN104152971A (en) | 2014-11-19 |
| CN104152971B CN104152971B (en) | 2018-06-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174699A (en) * | 2021-04-27 | 2021-07-27 | 上海工程技术大学 | Preparation method of graphene-doped polypropylene melt-blown non-woven fabric, melt-blown fabric and application of melt-blown fabric |
| CN113845756A (en) * | 2021-11-04 | 2021-12-28 | 西南石油大学 | Preparation method of basalt fiber composite material |
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| CN102031547A (en) * | 2010-11-05 | 2011-04-27 | 天津市飞荣达科技有限公司 | Device and method for continuously compounding plating metal and nano-particles on surface of carbon fiber |
| CN102182054A (en) * | 2011-05-16 | 2011-09-14 | 西安工程大学 | Method for preparing magnetic nano ferroferric oxide particle thin film on surface of chinlon fabric |
| CN103219163A (en) * | 2013-04-15 | 2013-07-24 | 苏州大学 | Super capacitor fiber electrode and manufacturing method thereof |
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| CN1176318A (en) * | 1996-08-26 | 1998-03-18 | 佳能株式会社 | Electrodeposition coated member and electrodeposition coating material |
| CN101560688A (en) * | 2008-03-25 | 2009-10-21 | 株式会社东芝 | Coating method |
| CN101250735A (en) * | 2008-04-09 | 2008-08-27 | 天津大学 | Apparatus and method for continuously composite plating metallic and nano particle on carbon fiber surface |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113174699A (en) * | 2021-04-27 | 2021-07-27 | 上海工程技术大学 | Preparation method of graphene-doped polypropylene melt-blown non-woven fabric, melt-blown fabric and application of melt-blown fabric |
| CN113174699B (en) * | 2021-04-27 | 2023-10-17 | 上海工程技术大学 | Preparation method of graphene doped polypropylene melt-blown nonwoven fabric, melt-blown fabric and application of melt-blown fabric |
| CN113845756A (en) * | 2021-11-04 | 2021-12-28 | 西南石油大学 | Preparation method of basalt fiber composite material |
| CN113845756B (en) * | 2021-11-04 | 2023-09-05 | 西南石油大学 | Preparation method of basalt fiber composite material |
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| CN104152971B (en) | 2018-06-01 |
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