Hauv kev ua haujlwm siab -kawg hloov cov yas, cov khoom siv hluav taws xob hluav taws xob hluav taws xob, thiab cov txheej txheem tshwj xeeb, cov pa roj carbon nanotubes tau ntev dhau los ua cov khoom lag luam tsis tseem ceeb. Txawm li cas los xij, thaum xaiv thiab yuav khoom, cov engineers feem ntau daig los ntawm qhov tseem ceeb: yuav ua li cas xaiv qhov sib piv ntawm carbon nanotubes? Ntau tus R&D cov neeg ua haujlwm dig muag nrhiav ultra- qhov sib piv siab, tsuas yog pom tias cov hmoov clumps nruj nreem nyob rau hauv matrix, ua rau ntxaib - ntsia hlau extruder tam sim no mus rau liab liab. Lwm tus, nrhiav kev yooj yim dispersion, xaiv cov raj luv luv thiab tuab, tsuas yog kom pom tias cov khoom siv hluav taws xob tsis tuaj yeem tsim tau txhua qhov, thiab txawm tias ob npaug ntawm cov nyiaj ntxiv tsis tuaj yeem ua tau raws li cov lus qhia tshwj xeeb. Qhov nam piv yog tsis txhais tau tias loj npaum li qhov ua tau; nws yog qhov kev ua si siab phem ntawm microscopic geometry thiab macroscopic ua. Kab lus no yuav siv cov ntaub ntawv tiag tiag los pab koj kom meej meej cov kev xaiv ntawm cov pa roj carbon nanotube nam piv.
1. Qhov tseem ceeb ntawm kev sib piv: Vim li cas nws yog "tus yuam sij" txiav txim siab ua tau zoo?
Tus nam piv (qhov piv ntawm qhov ntev mus rau txoj kab uas hla) ncaj qha txiav txim siab crosslinking point ceev thiab load hloov efficiency ntawm carbon nanotubes thaum tsim ib tug peb -siv network nyob rau hauv lub matrix, ua rau nws ib tug tseem ceeb parameter uas cuam tshuam rau tag nrho cov system.
Los ntawm qhov kev xav ntawm geometrical, kev tsim cov kev sib txuas ntawm cov pa roj carbon nanotubes hauv cov polymer tseem ceeb yog nyob ntawm kev sib tshooj ntawm cov raj. Qhov loj dua qhov sib piv, qhov dav qhov dav ntawm ib lub raj tuaj yeem ncav cuag, thiab cov raj tsawg dua yuav tsum tau tsim los ntawm -network. Qhov no yog lub npe nrov "percolation theory." Nyob rau hauv mechanical reinforcement, qhov piv txwv txiav txim siab qhov ntev ntawm kev sib tshuam ntawm cov shear kev nyuaj siab. Yog tias qhov sib piv qis dhau lawm, cov hlab tsis tuaj yeem ua tiav tag nrho "anchored" thiab yuav ncaj qha rub tawm thaum tensioned, tsis ua rau lub zog nanoscale super mechanical zog.
2. Daim Ntawv Thov Kev Sib Txuas Lus: Puas yog Kev Sib Tw Siab Zoo tiag tiag yog qhov kev daws teeb meem nkaus xwb?
Nyob rau hauv cov xwm txheej uas nrhiav qhov kawg conductivity thiab ultra- qhov sib ntxiv qis, qhov sib piv siab carbon nanotubes yog qhov kev xaiv thawj zaug, tab sis qhov yuav tsum tau ua ua ntej yog tias qhov tshwm sim siab viscosity thiab dispersion nyuaj yuav tsum tau daws.
Thaum hais txog yuav ua li cas xaiv cov nam piv ntawm cov pa roj carbon nanotubes, qhov chaw conductive yog qhov zoo tshaj plaws rau nam piv. Raws li cov classic statistical percolation qauv, lub percolation pib yog inversely proportional rau cov nam piv. Thaum cov nam piv nce los ntawm 100 mus rau 1000, cov nyiaj ntxiv uas yuav tsum tau ua kom tiav tib yam conductivity yuav raug txo los ntawm qhov kev txiav txim ntawm qhov loj. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv lithium roj teeb conductive additives: tus nqi qis dua txhais tau tias muaj feem ntau ntawm cov khoom siv, ncaj qha nce lub zog ceev. Txawm li cas los xij, qhov sib piv siab ua rau muaj qhov nce ntxiv hauv qhov system viscosity, ua rau electrode txheej nyuaj, thiab yuav tsum tau tshwj xeeb de- txheej txheem agglomeration kom sib npaug.
| Aspect Ratio Range | Hom Diameter/Length | Percolation Threshold (wt%) | Ntxiv Tus Nqi rau Tib Kev Coj Ua | Viscosity nyhuv | Hom Daim Ntawv Thov Scenarios |
|---|---|---|---|---|---|
| Tsawg Aspect Ratio (50-150) | 20nm / 1-3μm | 1.5 - 3.0% | Siab (~ 2.5%) | Tsawg, zoo flowability | Anti- cov yas zoo li qub, cov txheej txheem dav dav |
| Nruab nrab Aspect Ratio (150-500) | 10nm / 5-15μm | 0.3 - 1.0% | Nruab nrab (~ 0.8%) | Nruab nrab, yooj yim rau txheej txheem | Pa hluav taws xob roj teeb conductive additives, engineering plastics |
| High Aspect Ratio (500-3000+) | 5nm / 15-50μm | 0.02 - 0.2% | Tsawg heev (~ 0.05%) | Tsis tshua muaj siab, nquag gelation | High-cov roj teeb digital kawg, cov yeeb yaj kiab pob tshab |
3. Kev Ua Haujlwm Dispersibility: Kev Ua Si Tuag Ntawm Siab thiab qis
Lub entanglement quab yuam ntawm cov hlab nce exponentially nrog cov nam piv ntawm carbon nanotubes, ua rau dispersion nyuaj thiab cov khoom shear yuav tsum tau nce sharply, heev yooj yim ua rau nam piv poob.
Thaum daws qhov teeb meem ntawm yuav ua li cas xaiv qhov sib piv ntawm cov pa roj carbon nanotubes, lub Hoobkas cov khoom siv tiag tiag tsis tuaj yeem raug cais tawm ntawm qhov sib npaug. High nam piv raj zoo li lub lauj kaub ntawm siav spaghetti, nrog muaj zog van der Waals rog ua kom lawv nruj nreem intertwined. Yog tias lub zog shear ntawm cov khoom siv dispersion tsis txaus, qhov siab nam piv raj tsis tuaj yeem qhib txhua. Yog tias lub zog shear loj dhau lawm (xws li lub sijhawm ntev siab- zaus ultrasonication), nws yuav ncaj qha rau cov hlab ntsha, thaum kawg ua rau qhov sib piv ntawm qhov qis qis, thiab kev ua haujlwm tsis zoo dua li ncaj qha siv nruab nrab - rau - qis nam piv CNTs. Tsawg nam piv raj zoo li cov nplej nplej, nrog zoo flowability thiab yooj yim heev dispersion, tab sis lub qab nthab kev ua tau zoo yog tsawg.
| Dispersion thiab ua yam ntxwv | High Aspect Ratio (>500) | Nruab nrab-Low Aspect Ratio (<200) |
|---|---|---|
| Qhuav hmoov State | Heev fluffy, bulk ntom<0.05 g/cm³ | Qhov ntom ntom ntom ntom ntom ntom ntom 0.1-0.3 g / cm³ |
| Ultrasonic Dispersion Sijhawm | Ntev (yuav tsum tau 30min +), nquag tawg | luv (10-15min), shear resistant |
| Twin-Screw Shear Adaptability | Tsis zoo heev, fibers yooj yim tawg thiab rov qab | Zoo heev, haum rau cov pa extrusion granulation |
| Viscosity nce hauv Resin Matrix | Loj heev (tej zaum yuav txwv qhov siab tshaj qhov ntxiv) | Me me, tuaj yeem sau rau ntawm qhov sib piv siab |
4. Mechanical Reinforcement Scenarios: Qhov twg yog qhov tiag "Rebar"?
Hauv kev sib xyaw toughening thiab ntxiv dag zog, qhov sib piv siab ntawm cov pa roj carbon nanotubes nthuav tawm qhov zoo tshaj plaws ntawm kev puas tsuaj rau cov raj qis qis los ntawm kev muab kev rub ntev dua - tawm qhov ntev thiab tawg deflection txoj hauv kev.
Yog tias qhov sib piv ntawm cov pa roj carbon nanotubes tsawg dhau, qhov chaw sib cuag ntawm cov hlab thiab cov resin matrix tsawg dhau thaum cov khoom sib xyaw raug rau sab nraud. Tom qab kev ntxhov siab, lawv raug rub ncaj qha tawm ntawm matrix (tsawg rub- tawm haujlwm), ua tsis tau raws li "rebar." Tsuas yog thaum lub nam piv ntau tshaj qhov tseem ceeb ntev yuav carbon nanotubes puas es rub tawm thaum muaj kev ntxhov siab, maximizing kev noj ntawm lub zog tawg. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias cov cuab yeej cuab tam muaj qhov xav tau siab heev rau CNT purity; hlau catalyst residues dhau los ua cov ntsiab lus kev ntxhov siab, ua rau qhov kev txhawb zog ua tsis tiav.
5. Txoj Kev Ua Txhaum Kev Tuag: Yuav ua li cas Shandong Tanfeng ua kom muaj qhov sib npaug zoo ntawm qhov sib piv thiab kev tawg?
Kev cia siab rau lub txaj fluidized precision catalytic tswj thiab tus kheej-tsim ua ntej-dispersion thev naus laus zis, Shandong Tanfeng tso cai rau cov neeg siv kom tsis txhob mob siab rau qhov kev xaiv ntawm qhov sib piv, ua tiav qhov zoo sib npaug ntawm kev ua tau zoo thiab kev ua tiav.
Tau ntsib nrog cov teeb meem nyuaj ntawm yuav ua li cas xaiv qhov sib piv ntawm cov pa roj carbon nanotubes, txoj hauv kev zoo tshaj plaws tsis yog cia cov neeg siv khoom sib tw nrog cov khoom tawg, tab sis daws qhov teeb meem ntawm qhov chaw. Raws li cov chaw tsim khoom hauv CNT nrog kev tshawb fawb tob, Shandong Tanfeng New Material Technology Co., Ltd. tau tawg qhov kev tuag ntawm qhov sib piv siab thiab qhov nyuaj dispersion los ntawm cov txheej txheem tseem ceeb:
Precision Customized Synthesis:Siv tus kheej -tsim ntau-theem fluidized txaj reactor, Shandong Tanfeng precisely tswj catalyst kev ua ub no thiab lub sij hawm nyob rau hauv, ua kom meej customization ntawm CNT nam piv nyob rau hauv thaj tsam ntawm 100-3000. Cov batch-rau-batch ntev hloov pauv yog tswj tsis pub dhau 15%, kom ntseeg tau tias kev ua haujlwm ruaj khov heev.
Hauv -Situ De- entanglement Technology:Rau siab nam piv CNTs, Shandong Tanfeng qhia dynamic mechanical de-entanglement thiab nyob rau hauv -situ nto hloov kho ntawm lub synthesis qhov hluav taws xob kawg, ua rau cov bulk ntom ntawm siab nam piv hmoov los ntawm ntau tshaj 2 lub sij hawm, txo downstream pre-sib tov nyuaj, thiab tshem tawm "harbour" thiab tshem tawm.
Hassle-Dawb Paste Delivery:Shandong Tanfeng tsis tsuas yog muab siab - cov hmoov qhuav zoo tab sis kuj ua ntej - cov khoom sib cais tau sib xws nrog NMP, dej, thiab ntau yam resins. Siv cov khoom siv polymer dispersants kom cais tawm qhov sib piv siab CNTs, qhov muab tshuaj txhuam zoo D90 yog<5 μm, with coating free of particles, truly allowing customers to achieve "high aspect ratio performance with low aspect ratio processing experience."
Xaus
Rov qab mus rau lo lus nug tseem ceeb, yuav ua li cas xaiv qhov sib piv ntawm carbon nanotubes? Qhov no tsis txhais tau tias tsuas yog sau tus lej. Yog tias koj ua raws qhov kawg ntawm qhov kawg qis thiab kev txhawb zog siab, koj yuav tsum xaiv qhov sib piv siab, tab sis koj yuav tsum tau nruab nrog cov txheej txheem muaj zog dispersion los yog siv ncaj qha muab tshuaj txhuam. Yog tias koj nrhiav kev tsim khoom ruaj khov, kev ua haujlwm yooj yim, thiab tsis nkag siab rau cov nyiaj ntxiv, qhov nruab nrab - qhov sib piv qis yog qhov ua tau zoo dua. Txoj kev ntse tshaj plaws yog los txhawb kev txhawb zog ntawm cov chaw tsim khoom xws li Shandong Tanfeng uas nkag siab txog ob qho tib si synthesis thiab dispersion, siv cov kev hloov kho qhov sib piv thiab ua ntej - cov kev daws teeb meem los pab kom txhua gram ntawm cov pa roj carbon nanotubes siv nws cov txiaj ntsig siab tshaj plaws hauv koj lub cev.