Ntau tus engineers ntsib cov plaub hau- rub teeb meem thaum tsim: tom qab mob siab rau dispersing carbon nanotubes, lawv nyob rau hauv qab tom qab ob peb hnub ntawm sawv; los yog tom qab ntxiv lawv mus rau hauv lub cev, cov conductivity thiab mechanical reinforcement los yog txo qis. Yuav ua li cas txog sedimentation thiab kev ua haujlwm lwj tom qab carbon nanotube dispersion? Qhov no tsis yog tsuas yog nkim cov khoom kim heev tab sis kuj ncaj qha stalls qhov project nce qib.
1. Ua ntej, nkag siab: Vim li cas Carbon Nanotubes daws thiab lwj?
Lub hauv paus yog vim li cas rau sedimentation thiab kev ua tau zoo decay tom qab carbon nanotube dispersion yog lub zog van der Waals rog ntawm cov hlab, uas ua rau agglomeration, rhuav tshem ib tug -dimensional conductive network, thiab ua rau kom muaj zog resistivity thiab slurry stratification.
Cov pa roj carbon nanotubes muaj qhov sib piv uas tuaj yeem ncav cuag ntau txhiab lossis kaum tawm txhiab tus, nrog rau thaj chaw tshwj xeeb loj. Muaj ib txwm muaj zog heev van der Waals rog ntawm cov hlab. Thaum lub sij hawm dispersion, sab nraud quab yuam "qhib" lub CNT network, tab sis thaum lub zog raug tshem tawm, cov hlab yuav "cua ua ke" dua.
Cov txheej txheem no ua rau muaj kev cuam tshuam ntawm cov teeb meem:
Sedimentation:Agglomerates dab dej vim lub ntiajteb txawj nqus, ua rau slurry stratification.
Performance Decay:Ib qho -sib nqus conductive network raug rhuav tshem, ua rau muaj kev tiv thaiv kom rov qab los (cov teeb meem ntawm cov qauv nce, IG / ID tus nqi txo).
Kev siv nyuaj:Slurry rheology deteriorates, ua rau tsis sib xws txheej.
Hauv luv luv, carbon nanotubes yog "yug los ua ke," tab sis qhov peb xav tau yog rau lawv "ua haujlwm ntawm nws tus kheej" - qhov no yog lub hauv paus ntawm txhua yam teeb meem.
2. Yuav Ua Li Cas Xaiv Cov Txheej Txheem Dispersion? Pob Milling vs. Ultrasonication - Cov lus teb nyob ntawm no
Pob milling yog superior rau ultrasonication nyob rau hauv kev tswj cov txheej txheem kev ncaj ncees ntawm carbon nanotubes, uas ua rau qis resistivity, thiab muaj ib tug "optimal dispersion lub sij hawm taw tes" - slurry stability yog zoo tshaj plaws nyob rau hauv 6 teev ntawm pob milling los yog 3 teev ntawm ultrasonication.
Ib txoj kev tshawb fawb tau luam tawm xyoo 2025 hauvCov ntaub ntawv qhiamuab cov lus teb meej.
Cov kws tshawb fawb tau muab ob txoj hauv kev sib txawv ntawm lub cev, pob milling thiab ultrasonication, los npaj 5 wt% roj-raws li carbon nanotube conductive slurry. Cov ntaub ntawv tseem ceeb yog raws li nram no:
| Txoj kev Dispersion | Lub Sijhawm Zoo | IG/ID Tus Nqi (Structural Integrity Indicator) | Kev tiv thaiv | Kev ua haujlwm ruaj khov |
|---|---|---|---|---|
| Pob Milling | 8h | 1.058 | 94.36m 0 0m ;ua | Qhov zoo tshaj plaws stability ntawm 6h ntawm pob milling |
| Ultrasonication | 3h | 0.985 | 115.7 m Ω · cm | Qhov zoo tshaj plaws stability ntawm 3h ntawm ultrasonication |
Nyob rau hauv lub pob milling tej yam kev mob, ib tug - qhov ntev tubular qauv ntawm carbon nanotubes yog zoo khaws cia, nrog tsawg tus yam ntxwv tsis xws luag thiab qis resistivity, uas ua rau superior conductivity ntawm slurry.
Nws yog ib nqi sau cia hais tias ntev dispersion lub sij hawm tsis yog ib txwm zoo dua - lub absorbance poob tus nqi yog qeeb tshaj ntawm 6 teev ntawm lub pob milling thiab 3 teev ntawm ultrasonication, qhia lub hav zoov ntawm lub optimum dispersion lub sij hawm qhov rais. Kev sib cais ntau dhau tuaj yeem ua rau lub cev puas tsuaj thiab ua kom rov ua dua - agglomeration.
Cov lus pom zoo ua haujlwm:Ua ntej lub pob milling nrog lub sijhawm tswj ntawm 6-8 teev. Yog tias siv ultrasonication, khaws cia li ntawm 3 teev thiab siv cov cua txias kom tiv thaiv qhov kub thiab txias uas tuaj yeem ua rau rov ua dua.
3. Yuav xaiv tus Dispersant li cas? Qhov Zoo tuaj yeem ua kom ruaj khov rau ntau tshaj 10 lub hlis
Cov dispersant yog qhov tseem ceeb rau kev txiav txim siab ntev - lub sij hawm stability ntawm carbon nanotubes. Cationic (HTAB) thiab non-ionic (OP) dispersants yog qhov zoo tshaj plaws. Ntxiv 20-100% ntawm cov khoom tshwj xeeb dispersant rau ntau phab ntsa cov pa roj carbon nanotubes tuaj yeem txo cov viscosity thiab tiv thaiv kev daws teeb meem.
Yog tsis muaj dispersants, carbon nanotube suspensions tsis tuaj yeem ruaj khov - yam tsis muaj surfactants, nws tsis tuaj yeem npaj cov nanofluids ruaj khov.
Ib txoj kev tshawb fawb sib piv cov kev cuam tshuam ntawm ntau yam surfactants:
| Hom Surfactant | Tus Neeg Sawv Cev Variant | Lub Sijhawm Stability | Kev ntsuas qhov ua tau zoo |
|---|---|---|---|
| Tsis yog -ionic | Emulsifier OP | Tshaj 10 lub hlis | ★★★★★ |
| Cationic | Hexadecyltrimethylammonium Bromide (HTAB) | Tshaj 10 lub hlis | ★★★★★ |
| Anionic | Sodium Dodecyl Sulfate (SDS) | 20 hnub | ★★★ |
| Anionic | Sodium Dodecyl Benzene Sulfonate (SDBS) | 3,5h ua | ★ |
| Anionic | Sodium Dodecyl Sulfonate (SDSs) | 0,5h ua | ☆ |
Tsis yog -ionic OP thiab cationic HTAB qhia qhov cuam tshuam zoo tshaj plaws, nrog kev ruaj ntseg ntev dua 10 lub hlis.
Rau cov cationic dispersant HTAB, thaum lub concentration ntau tshaj 1 g / L, lub peev xwm ntawm cov pa roj carbon nanotubes ncav cuag nws qhov siab tshaj plaws, thiab cov electrostatic repulsion deb tshaj qhov muaj peev xwm txaus nyiam, ua tiav qhov zoo tshaj plaws stability. HTAB tuaj yeem cuam tshuam cov pa roj carbon nanotube agglomeration thaum txo cov slurry viscosity thiab nce cov ntsiab lus.
Cov tshuaj dispersants tshwj xeeb muaj kev xaiv ntau dua: rau cov dej-raws li ntau{{1} cov phab ntsa carbon nanotube slurries, ib qho kev faib tawm ntawm qhov sib ntxiv (cov ntsiab lus ntawm cov khoom) ntawm 20-100% ntawm ntau-walled CNT huab hwm coj (los yog 100-200% rau ib leeg-walled kom txo tau CNTs, txo cov dej ntws tau zoo dua, txo cov dej ntws) thiab flocculation.
Cov lus pom zoo ua haujlwm:Rau cov dej-raws li systems, tsis yog-ionic OP lossis cationic HTAB yog thawj qhov kev xaiv. Qhov ntau npaum li cas yuav tsum tau optimized xyaum ua tej yam (ntau tshaj yuav txo tau stability). Rau cov roj-raws li tshuab, xaiv cov tshuaj dispersants tshwj xeeb tshaj nrog cov kuab tshuaj xws li NMP.
4. Kev daws teeb meem: Kev Tswj Xyuas Zoo los ntawm Raw Material End
High-purity, low-hlau- impurity, batch- ruaj khov carbon nanotube raw cov ntaub ntawv yog "innate genes" rau ntev - lub sij hawm stability tom qab dispersion.
Txawm hais tias cov txheej txheem dispersion thiab dispersant zoo npaum li cas, lawv tsis tuaj yeem txuag CNT cov ntaub ntawv raw nrog tsis ruaj tsis khov. Cov impurities (tshwj xeeb tshaj yog cov hlau residual catalysts) ua kom cov oxidation thiab cov txheej txheem degradation ntawm cov hlab ntsha, thaum cov hlab nrog ib tug dav txoj kab uas hla tis yog feem ntau ua rau uneven agglomeration.
Cov khoom lag luam tseem ceeb ntawm Shandong Tanfeng New Material Technology Co., Ltd. hais meej meej rau cov kev xav tau no:
| Advantage Dimension | Tanfeng Tshiab Khoom Lub Zog | Qhov tseem ceeb rau Dispersion Stability |
|---|---|---|
| Khoom Purity | TF320 series: purity Ntau dua lossis sib npaug rau 98%, cov ntsiab lus tshauv Tsawg dua lossis sib npaug li 2% | Tsawg impurities → tsawg dua qhov tshwm sim → ruaj khov slurry |
| Hlau impurity tswj | Fe Tsawg dua lossis sib npaug rau 500 ppm, Co Tsawg dua lossis sib npaug rau 3000 ppm, lwm tus Tsawg dua lossis sib npaug li 5 ppm | Txo qhov kev pheej hmoo ntawm cov tshuaj tiv thaiv catalytic |
| Tag Nrho Cov Khoom Muag | TF-210, TF-300, TF-400, TF-500, thiab lwm yam. | Xaiv raws li qhov sib txawv daim ntawv thov scenarios |
| Ntau lawm Scale | 200 tons / hli | Zoo batch sib xws, ruaj khov khoom saw |
Shandong Tanfeng Cov Khoom Tshiab, los ntawm kev tsim txiaj ntawm nws hauv -situ hloov kho thev naus laus zis thiab paub tab ua ntej - cov txheej txheem muab tshuaj dispersed, hauv paus daws qhov mob taw tes ntawm "yuav hmoov tab sis tsis tuaj yeem siv nws zoo," ua rau nws muaj kev sib tw zoo heev.
Hauv - qhov hloov kho qhov kawg ntawm txoj kev loj hlob, qhov yooj yim rau kev tawg mus:Shandong Tanfeng qhia tshwj xeeb catalyst thiab carbon qhov chaw tswj thaum lub sij hawm CVD synthesis. Lub synthesized carbon nanotubes inherently muaj nruab nrab ntawm cov pab pawg neeg ua hauj lwm, nrog tsawg lub raj phab ntsa tsis xws luag tab sis kuj txo inter- raj kev sib tshuam, alleviating lub nyiam rau post- dispersion agglomeration los ntawm qhov chaw.
Customized pre-paste dispersed, npaj siv:Tanfeng Cov Khoom Tshiab tsis yog tsuas yog muag cov hmoov xwb tab sis kuj muab cov pa roj carbon nanotube conductive pastes zoo rau NMP (lithium roj teeb systems), dej-raws li systems, thiab epoxy resin systems. Cov pastes no tau txais kev tsim qauv nruj me ntsis thiab cov txheej txheem sib txawv me me -theem dispersion, tsis muaj kev nyuaj siab tom qab ntev - lub sij hawm sawv, thiab ib qho piv txwv khaws cia ntau tshaj 90%.
Anti-kev laus attenuation testing:Txhua pawg ntawm cov pa roj carbon nanotube muab tshuaj xa tuaj yuav tsum dhau siab - qhov kub thiab txias (60℃/ 7 hnub) thiab khov -thaw lub voj voog, kom tsis txhob rov qab- coarsening los yog sedimentation txawm nyob rau hauv huab cua txias, txo qhov kev ua tau zoo.
Tanjfeng Cov Khoom Siv Tshiab cov khoom siv npog ob qho tib si -walled thiab multi-walled carbon nanotubes, nrog purity mus txog kev lag luam- ua theem. Ntau TF series carbon nanotubes muaj, yoog raws cov txheej txheem sib txawv thiab cov txheej txheem yuav tsum tau ua.
Ib lub rooj kom nkag siab txog "Anti-Tshuaj thiab Tiv Thaiv- lwj" daws
| Teeb meem theem | Core Countermeasure | Cov ntaub ntawv tseem ceeb / kev pom zoo |
|---|---|---|
| Txheej txheem Dispersion | Pob milling yog superior rau ultrasonication | Pob milling 8h resistivity 94.36 mΩ·cm; zoo stability ntawm 6h pob milling los yog 3h ultrasonication |
| Kev xaiv Dispersant | Dej-raws li: OP lossis HTAB; Roj-raws li: tshwj xeeb dispersant | HTAB ≥1 g/L stable for >10 lub hlis; Tshwj xeeb dispersant ntxiv 20-100% (MWCNT) |
| Raw Khoom Zoo | High purity, tsawg impurities, ruaj khov batch | Purity Ntau dua lossis sib npaug li 98%, tswj tau cov hlau tsis huv - Tanfeng Cov Khoom Tshiab TF320 series ua tau raws li cov qauv |
Sedimentation thiab kev ua tau zoo lwj tom qab carbon nanotube dispersion yog "innate" teeb meem, tab sis lawv tuaj yeem daws tau los ntawm "tau txais" kev siv zog - xaiv cov txheej txheem dispersion txoj cai (pob milling 6-8h), siv cov dispersant txoj cai (OP/HTAB/specialized), thiab siv cov khoom siv siab tshaj {{6}txoj kev purity zoo 98% series). Peb lub ntsiab lus no ua haujlwm ua ke los xyuas kom meej tias cov pa roj carbon nanotube slurry "sawv ruaj khov, nyob ruaj khov, thiab tsis lwj." Raws li cov kws tshaj lij carbon nanotube chaw tsim khoom, Shandong Tanfeng Cov Khoom Tshiab, los ntawm kev tsim txiaj ntawm nws hauv -situ hloov kho thiab paub tab ua ntej -dispersed paste thev naus laus zis, muab ib qho kev daws teeb meem los tshem tawm kev txhawj xeeb dispersion, ua rau nws yog ib tus khub txhim khu kev qha rau kev txhim kho koj cov khoom yield.