I-Hielscher Ultrasound Technology

Ama-CNTs Angahlukaniswanga Ngokwe-Ultrasonication

Ukuxhaphaza ukusebenza okuyingqayizivele kwama-carbon nanotubes (CNTs), kumele ahlakazeke ngokuphelele.
Abasabalalisi be-Ultrasonic bayithuluzi elivame kakhulu lokusabalalisa ama-CNTs kokumiswa okwesikhashana okumiselwe amanzi.
Ubuchwepheshe bokuhlakazeka be-ultrasonic budala ngokwanele amandla aphezulu e-shear ukufeza ukuhlukaniswa okugcwele kwe-CNTs ngaphandle kokulimaza.

Ultrasonic Ukuhlakaza of Nanbonubes Carbon

I-sonication enamandla enamandla ne-probe-hlobo ultrasonicator. (Chofoza ukuze wandise!)Ama-carbon nanotubes (CNTs) anesilinganiso esiphakeme kakhulu futhi akhombisa indawo ephansi kanye nendawo ephezulu kakhulu (amakhulu amaningana m2 / g), ebanikeza izakhiwo ezihlukile njengamandla aphakeme kakhulu, ukhuni, nobunzima namandla amakhulu ukusebenza kukagesi okuphezulu nokushisayo. Ngenxa yamandla e-Van der Waals, eheha i-single nanotubes (CNTs) eyodwa, ama-CNTs ahlela ngokujwayelekile emasakeni noma emasokeni. Lawa mandla okuheha okuphakathi nendawo asuselwa kwinto yokubopha ye-π-bond phakathi kwama-nanotubes aseduze aziwa ngokuthi i-π-stacking. Ukuthola inzuzo ephelele kuma-carbon nanotubes, lawa ma-agglomerates kufanele ahlakazeke futhi ama-CNTs kufanele asatshalaliswe ngokulinganayo ekusakazweni okugcwele. Ukuqina kwe-ultrasonication kwakha i-acoustic cavitation ku-kefir. Ngaleyo ndlela kukhiqizwe ingcindezi yendawo yokugunda yasendaweni iphula ama-CNT bese ibahlakaza ngokufanayo ekumiseni okungajwayelekile. Ubuchwepheshe bokuhlakazeka be-ultrasonic budala ngokwanele amandla aphezulu e-shear ukufeza ukuhlukaniswa okugcwele kwe-CNTs ngaphandle kokulimaza. Ngisho ne-sonNatised sonication ebucayi isetshenziswa ngempumelelo ukuyihlukanisa ngokwehlukana. I-Ultrasonication isanda kukhipha isilinganiso esanele sokucindezela ukuhlukanisa ama-SWNT aggregates ngaphandle kokubangela ukwaphuka okuningi kuma-nanotubes ngamanye (Huang, Terentjev 2012).

Izinzuzo ze-Ultrasonic CNT Disersion

  • Ama-CNTs ahlakazeka awodwa
  • Ukusatshalaliswa okuhle
  • Ukusebenza kahle kokuhlakazeka okuphezulu
  • Ukulayisha okuphezulu kwe-CNT
  • Akukho ukucekelwa phansi kwe-CNT
  • ukucubungula ngokushesha
  • ukulawulwa kwenqubo eqondile
I-UIP2000hdT - 2kW ultrasonicator ye-carbon nanotubes dispersions.

I-UIP2000hdT – I-2kW enamandla i-ultrasonicator yokusakazeka kwe-CNT

Isicelo solwazi




Qaphela kwethu Inqubomgomo yobumfihlo.


Isistimu ephezulu ye-Ultrasonic Systems ye-CNT Disersions

I-Hielscher Ultrasonics inikezela ngemishini enamandla nethembekile ye-ultrasonic yokusakazwa kahle kwe-CNTs. Ukuthi udinga ukulungiselela amasampula amancane we-CNT wokuhlaziya no-R&D noma kufanele wakhe izimboni ezinkulu zokusabalalisa ngobuningi, uhla lomkhiqizo lukaHielscher lunikeza uhlelo oluhle kakhulu lwe-ultrasonic ngezidingo zakho. Kusuka I-50W ultrasonicators ukuthola ilebhu kuze Amayunithi we-16kW weyunivesithi ngemikhiqizo yezentengiso, Hielscher Ultrasonics ukwambisile.
Ukuze ukhiqize ama-carbon nanotube wekhwalithi ephezulu, amapharamitha enqubo kumele alawulwe kahle. Amplitude, izinga lokushisa, ingcindezi nesikhathi sokugcinwa kwemingcele ebaluleke kakhulu ekusatshalaliswa kwe-CNT. Ama-ultrasonicators kaHielscher akavumeli kuphela ukulawulwa okuqondile kwepharamitha ngayinye, wonke amapharamitha wenqubo aqoshwa ngokuzenzakalela ekhadini le-SD elihlanganisiwe lezinhlelo ze-digital ze-Hielscher. Iphrothokholi yenqubo ngayinye ye-sonication isiza ukuqinisekisa imiphumela yokuvela futhi nekhwalithi ehambisanayo. Nge-browser ekude ukulawula umsebenzisi angasebenza futhi aqaphe insiza ye-ultrasonic ngaphandle kokuthola indawo yohlelo lwe-ultrasonic.
Njengoba i-nanotubes eyodwa ebiyelwe ngodonga (i-SWNTs) kanye ne-nan nanububes eyakhiwe ngodonga eningi (i-MWNTs) kanye nendawo ekhethiwe enamanzi noma ephakathi nendawo idinga ukucaciswa okuthile kokuqina, ukuvelela kwe-ultrasonic yinto esemqoka uma kukhulunywa ngomkhiqizo wokugcina. Hielscher Ultrasonics’ ama-processor ultrasonic processors angahambisa kakhulu futhi amplople amnene kakhulu. Sungula indawo efanelekile yezidingo zakho zenqubo. Ngisho nezikhuliso ezifika ku-200µm zingaqhutshwa kalula ngokuqhubekayo ekusebenzeni kwe-24/7. Amplrodes aphakeme kakhulu, ama-sonotrodes abekwe ngokwezifiso ayatholakala. Ukuba namandla kwemishini yokusebenza kwe-Hielscher sika-Hielscher kuvumela ukusebenza kwe-24/7 emsebenzini osindayo nasezindaweni ezifunwayo.
Amakhasimende ethu anelisekile ngokuqina okuqinile nokuthembeka kwezinhlelo zikaHielscher Ultrasonic. Ukufakwa emikhakheni yezicelo ezisindayo, izindawo ezifunwayo kanye nokusebenza kwe-24/7 kuqinisekisa ukucutshungulwa okusebenzayo nokunempilo. Ukuqina kwenqubo ye-Ultrasonic kunciphisa isikhathi sokucubungula futhi kufinyelela imiphumela engcono, ie izinga eliphakeme, isivuno esiphakeme, imikhiqizo emisha.
Ithebula elingezansi linikeza isibonakaliso somthamo wokucubungula we-ultrasonicators wethu:

Iqoqwana Ivolumu flow Rate Amadivayisi ezinconyiwe
0.5 kuya ku-1.5mL na I-VialTweeter
1 kuya ku-500mL 10 kuya ku-200mL / min UP100H
10 kuya ku-2000mL 20 kuya ku-400mL / min UP200Ht, UP400St
0.1 kuya ku-20L 0.2 kuya ku-4L / min I-UIP2000hdT
10 kuya ku-100L 2 kuya ku-10L / iminithi I-UIP4000hdT
na 10 kuya ku-100L / iminithi UIP16000
na sikhulu yinhlanganisela UIP16000

Xhumana nathi! / Cela Us!

Cela ulwazi oluthe xaxa

Sicela usebenzise ifomu elingezansi, uma ufisa ukucela ulwazi oluthe xaxa mayelana ne-homogenization yama-ultrasonic. Sizojabula ukukunikeza uhlelo lwe-ultrasonic ukuhlangabezana nezidingo zakho.









Sicela uqaphele wethu Inqubomgomo yobumfihlo.


I-Hielscher Ultrasonics ikhiqiza ama-ultrasonicators aphezulu ekusebenzeni kwezicelo ze-sonochemical.

Amaprosesa aphezulu aphezulu e-ultrasonic kusukela ebhuthini kuya ku-pilot nesilinganiso sezimboni.

Izincwadi / Izinkomba

  • Biver T.; Criscitiello F.; Di Francesco F.; Minichino M.; Swager T.; Pucci A. (2015): MWCNT/Perylene bisimide Water Dispersions for Miniaturized Temperature Sensors. RSC Advances 5: 2015. 65023–65029.
  • Chiou K.; Byun S.; Kim J.; Huang J. (2018): Additive-free carbon nanotube dispersions, pastes, gels, and doughs in cresols. PNAS Vol. 115, No. 22, 2018. 5703–5708.
  • Huang, Y.Y:; Terentjev E.M. (2012): Dispersion of Carbon Nanotubes: Mixing, Sonication, Stabilization, and Composite Properties. Polymers 2012, 4, 275-295.
  • Krause B.; Mende M.; Petzold G.; Pötschke P. (2010): Characterization on carbon nanotubes’ dispersability using centrifugal sedimentation analysis in aqueous surfactant dispersions. Conference paper ANTEC 2010, Orlando, USA, May 16-20 2010.
  • Paredes J.I.; Burghard M. (2004): Dispersions of Individual Single-Walled Carbon Nanotubes of High Length. Langmuir 2004, 20, 5149-5152.
  • Santos A.; Amorim L.; Nunes J.P.; Rocha L.A.; Ferreira Silva A.; Viana J.C. (2019): A Comparative Study between Knocked-Down Aligned Carbon Nanotubes and Buckypaper-Based Strain Sensors. Materials 2019, 12, 2013.
  • Szelag M. (2017): Mechano-Physical Properties and Microstructure of Carbon Nanotube Reinforced Cement Paste after Thermal Load. Nanomaterials 7(9), 2017. 267.



Amaqiniso Okufanele Ukwazi

ngama-carbon nanotubes

Ama-carbon nanotubes (CNTs) ayingxenye yesigaba esikhethekile sezinto ezikhiqizwa yikhabhoni eyodwa, zibonisa izakhiwo ezikhethekile zokukhanyisa, zikagesi, ezishisayo nezokubukeka. Bayingxenye enkulu esetshenziswayo ekwakhiweni nasekukhiqizweni kwama-nanomatadium athuthukile njenge-nano-composites, polymers aqinisiwe njll. Ngakho-ke asetshenziswa kubuchwepheshe bezwe. Ama-CNTs adalula amandla aphezulu kakhulu, izindawo eziphakeme kakhulu zokudlulisa ezishisayo, izikhala ezisezingeni eliphansi kanye nokuqina kwamakhemikhali nokuqina, okwenza ama-nanotubes abe yisengezo esithembisayo sezinto zokwenziwa eziningi.
Ngokuya ngesakhiwo sazo, ama-CNTS ahlukaniswa ama-nanotubes angabodonga (i-SWNTs), ama-nan nanububes asezindongeni (DWCNTs), nama-carbon nanotubes anogqinsi (MWNTs).
Ama-SWNTs awamashubhu amade angamakhilogremu amade enziwe odongeni lwekhabhoni ye-athomu eyodwa. Ishidi le-athomu lama-carbons ahlelwe epulini lezinyosi. Imvamisa, ziqhathaniswa ngokuqondile namashidi asongelwe phezulu we-graphite eyodwa noma ungqimba.
Ama-DWCNTs aqukethe ama-nanotubes amabili abiyelwe ngodonga olulodwa, enye ingene ngaphakathi komunye.
Ama-MWN ayifomu le-CNT, lapho ama-nanotubes amaningi abiyelwe ngodonga ahlala ngaphakathi komunye. Njengoba ububanzi babo buphakathi kuka 3-30 nm futhi njengoba bekhula ngamasentimitha ambalwa ubude, isilinganiso sabo sesici singahluka phakathi kwezigidi eziyishumi kuya kweziyishumi. Uma kuqhathaniswa ne-carbon nanofibers, amaMWNTs ane-wall ehlukile, ububanzi obuncane obungaphandle, kanye nengaphakathi lendlu. Ezisetshenziswa kakhulu ezitholakala ngenkuthalo zamaMWNTs yiBaytubes® C150P, Nanocyl® NC7000, Arkema Graphistrength® C100, kanye ne-futureCarbon CNT-MW.
Synthesis of CNTsAma-CNTs akhiqizwa indlela ye-plasma based synthesis noma indlela yokuphuma kwe-arc, indlela yokufakelwa kwe-laser, inqubo yokufakwa kokushisa, ukufakwa kwamakhemikhali we-vapor (CVD) noma i-plasma eyenziwe ngcono yamakhemikhali.
Ukusebenza kwe-CNTs: Ukwenza ngcono izimfanelo zama-carbon nanotubes futhi awenze afaneleke ohlelweni oluthile, ama-CNTs avame ukusebenza kahle, isib. Ngokungeza amaqembu e-carboxylic acid (-COOH) noma amaqembu we-hydroxyl (-OH).

CNT Ukuhlakaza Izithasiselo

Izimbungulu ezimbalwa ezinjenge-super acid, u-ionic uketshezi, ne-N-cyclohexyl-2-pyrrolidnone ziyakwazi ukulungiselela ukusakazeka okuphezulu kwe-CNTs, ngenkathi izithambisi ezivame kakhulu kuma-nanotubes, njenge-N-methyl-2-pyrrolidone (NMP ), i-dimethylformamide (DMF), ne-1,2-dichrolobenzene, ingasabalalisa ama-nanotubes kuphela ngokugxila okuphansi kakhulu (isib, ngokuvamile <0.02 wt% of single-walled CNTs). The most common dispersion agents are polyvinylpyrrolidone (PVP), Sodium Dodecyl Benzene Sulfonate (SDBS), Triton 100, or Sodium Dodecyl Sulfonate (SDS). Cresols are a group of industrial chemicals which can process CNTs at concentrations up to tens of weight percent, resulting in a continuous transition from dilute dispersions, thick pastes, and free-standing gels to an unprecedented playdough-like state, as the CNT loading increases. These states exhibit polymer-like rheological and viscoelastic properties, which are not attainable with other common solvents, suggesting that the nanotubes are indeed disaggregated and finely dispersed in cresols. Cresols can be removed after processing by heating or washing, without altering the surface of CNTs. [Chiou et al. 2018]

Izicelo ze-CNT Disersions

Ukuze usebenzise izinzuzo ze-CNTs, kufanele zihlakazeke zibe yi-liquid njengama-polymers, Ama-CNTs asakazeke ngokulinganayo asetshenziselwa ukwenziwa kwepulasitiki esebenzayo, ama-crystal shows we-liquid, ama-diode akhipha i-organic, izikrini zokuthinta, ukubonisa okuguqukayo, amaseli elanga, ama-ink enzisayo, izinto zokulawula ezimile, kufaka phakathi amafilimu, amagwebu, imicu yezindwangu, izindwangu zoku polymer nezinto zokunamathisela, ukusebenza okuphezulu kwe-polymer composites ngamandla akhethekile womshini nobulukhuni, imicu ye-polymer / CNT eyinhlanganisela, kanye nezinto zokukhanya ezingasindi.