Nyob rau hauv cov dej tob ntawm kev hloov kho cov yas thiab cov khoom siv hauv tsev, lub npe ntawm cov pa roj carbon nanotubes tau ntev thunderous. Txawm li cas los xij, ntau tus kws tsim qauv tsim tsis tau sai li sai tau thaum lawv pib: muab pov tseg rau hauv ib pawg ntawm cov hmoov dub tsis tsuas yog ua tsis tau ntxiv tab sis ua rau cov matrix ua nkig thiab ntws mus rau qhov tawg. Qhov no coj peb mus rau lub neej niaj hnub no- lo lus nug tshawb nrhiav: ntau npaum li cas kev txhim kho cov pa roj carbon nanotubes tuaj yeem siv rau cov yas / roj hmab / pob zeb? Tus nqi ntxiv yog dab tsi? Qee tus hais tias 0.5% ntxiv ob npaug zog, lwm tus hais tias ntxiv nws tsis muaj qhov sib txawv kiag li. Qhov no tsis txhais tau tias yog se ntawm kev txawj ntse them rau cov khoom siv nws tus kheej, tab sis yog qhov kev ua si siab phem ntawm ib qho -nano dimensional-network thiab interfacial compatibility ntawm macroscopic matrix. Niaj hnub no, peb yuav rhuav tshem cov khaub ncaws ua lag luam thiab siv cov ntaub ntawv nyuaj ntsuas los qhia meej lub zog sib ntaus sib tua ntawm CNTs hauv peb lub tshuab matrix.
1. Plastic Reinforcement: Ntau npaum li cas yuav tsum tau ua kom cov yas ob leeg tawv thiab conductive?
Thaum txhawb cov yas nrog cov pa roj carbon nanotubes, tsuas yog qhov sib ntxiv qis heev ntawm 1-3wt% yog xav tau los ua kom lub zog tensile los ntawm 40% -80% thiab muab cov haujlwm ruaj khov los tiv thaiv zoo li qub thiab thermally conductive rau matrix.
Cov iav fiber ntau lossis cov ntxhia hauv ib txwm siv- cov yas ntim khoom feem ntau xav tau ntau dua 20% ntxiv, uas tsis yog tsuas yog ua rau cov khoom siv txaus txaus nkaus xwb tab sis kuj ua rau kev txhaj tshuaj- pwm qhov chaw ntxhib ntawm qhov chaw. Carbon nanotube reinforced plastics, txawm li cas los xij, cia siab rau "nanoscale rebar." Ib qho me me ntawm CNTs interweaves rau hauv ib lub network hauv cov yas yaj, nrog rau ib qho kawg xauv mus rau cov saw hlau polymer thiab lwm qhov kawg ua rau muaj kev ntxhov siab. Thaum lub zog sab nraud rub, cov raj siv lub zog loj los ntawm rub- tawm thiab txuas cov txheej txheem. Qhov tseem ceeb tshaj, 1-2% sib ntxiv tshaj qhov pib ntawm kev ua haujlwm percolation, ncaj qha tig cov yas insulating rau hauv cov khoom siv los tiv thaiv- zoo li qub - ib yam dab tsi ib txwm muaj peev xwm tsuas yog npau suav ntawm.
| Plastic Performance Indicator (PA66 ua piv txwv) | Ntshiab Resin | CNT Reinforced Yas (2wt% ntxiv) | Kev Txhim Kho Kev Ua Haujlwm | Authoritative Source/Data Reference |
|---|---|---|---|---|
| Tensile zog | 80 MPa | 115 - 145 MPa | +40% - 80% | Composites Part B |
| Nto Resistivity | >10 ⁵ Ω / sq | 10³ - 10⁵ Ω/sq | Kev tiv thaiv ruaj khov - zoo li qub tau ua tiav | Shandong Tanfeng Application Laboratory |
| Thaum tshav kub kub Deflection Temperature (HDT) | 75 degree | 105 degree | +30 degree | Phau ntawv Journal of Polymer Materials |
| Melt Flow Index (MFI) | Lub hauv paus | Txo me ntsis tab sis tseem txhaj tshuaj | Far superior rau 20% iav fiber ntau ntxiv | Txhaj tshuaj molding txheej txheem ntsuas kev sib piv |
2. Roj Hmab Reinforcement: Vim li cas nws thiaj hloov tau ib nrab ntawm cov roj carbon dub?
Ntxiv 2-5wt% carbon nanotubes rau cov roj hmab tshuab tsis tsuas yog txhim kho hnav tsis kam los ntawm ntau tshaj 50% tab sis kuj tsim lub thermally conductive network, daws qhov mob tuag tes tuag taw ntawm hysteresis tshav kub tiam hauv cov khoom siv roj hmab.
Tau ib puas xyoo, tus huab tais uas tsis muaj teeb meem ntawm kev lag luam roj hmab tau ua cov pa roj carbon dub, feem ntau ntxiv ntawm 40-50 qhov chaw. Tab sis carbon dub tsis yog hnyav xwb; nws cov thermal conductivity yog qhov tsis zoo, ua rau cov log tsheb dhau los ntawm kev kub ceev thiab tawg. Carbon nanotube reinforced roj hmab ua ob qho tib si raws li ib tug neeg kho tshuab "micro-caij nplooj ntoos hlav" thiab raws li ib tug "txoj kev loj" rau tshav kub conduction. Siv 2-5 qhov chaw ntawm CNTs los hloov 10-20 qhov chaw ntawm cov pa roj carbon dub tuav tib lub zog thaum txhim kho lub zog tsim kua muag thiab hnav tsis kam, thiab ob npaug thermal conductivity, zoo heev txuas lub neej ntawm cov roj hmab ntsaws ruaj ruaj thiab cov log tsheb.
| Rubber Performance Indicator (NBR ua piv txwv) | Pure Carbon Dub System (50phr) | Carbon Dub 40phr + CNT 3phr | Kev Txhim Kho Kev Ua Haujlwm | Mechanism piav qhia |
|---|---|---|---|---|
| Akron Abrasion Loss | Lub hauv paus (0.15 cm³) | 0.07 - 0.08 cm³ | Hnav tiv thaiv tau txhim kho los ntawm 50% + | Ib -sib nqus network txwv kev nthuav tawm tawg |
| Thermal conductivity | 0.2 W/m·K | 0.45 W/m·K | Thermal conductivity ob npaug | CNT phonon txoj kev loj dissipates tshav kub |
| Tear Strength | 35 kN / m | 50 kN / m | +42% | Rub- tawm thiab txuas ntxiv kom tshem tawm lub zog kev ntxhov siab |
| Mooney Viscosity | Kwv tij siab | Tsawg heev | Txhim kho cov txheej txheem flowability | Tag nrho cov filler cov ntsiab lus txo |
3. Kev Txhim Kho Kom Zoo: Ob peb tee ntawm cov kua dub puas tuaj yeem tiv thaiv kev tawg?
Qhov chaw pib rau carbon nanotube reinforced pob zeb yog qhov tsawg heev. Tsuas yog ib qho ntxiv ntawm 0.05-0.1wt% yog xav tau los ua kom muaj zog compressive los ntawm 20%-30% thiab ua rau muaj kev cuam tshuam loj ntawm micro-tawg.
Qhob yog cov khoom siv macroscopic brittle, sab hauv nrog micron - nplai capillary pores thiab micro- tawg. Lub hauv paus ntsiab lus ntawm carbon nanotube reinforced pob zeb yog "micro-sutures." Thaum lub sij hawm hydration cov tshuaj tiv thaiv, zoo - tawg CNTs hla thoob plaws cov haiv neeg micro- tawg zoo li sutures, tiv thaiv kev tawg ntxiv. Ib qho ntxiv uas tsis tshua muaj (tsuas yog ob peb kaum mus rau ib puas grams ib lub cubic meter ntawm pob zeb) densifies lub microscopic pores, tsis tsuas yog ua kom compressive thiab flexural zog tab sis kuj ho txhim kho impermeability thiab khov -thaw kuj.
| Qhob Performance Indicator (C30 benchmark) | Plain Qhob | CNT pob zeb (0.08wt% ntxiv) | Kev Txhim Kho Kev Ua Haujlwm | Authoritative Source/Data Reference |
|---|---|---|---|---|
| 28-Hnub Compressive zog | 30 MPa | 37 - 39 MPa | +20% - 30% | Kev tsim kho thiab cov khoom siv hauv tsev |
| Flexural zog | 4.0 MPa siab | 5.2 - 5.5 MPa | +30% | Toughness enhanced, kab nrib pleb bridged |
| Slump (ua haujlwm) | Lub hauv paus | Tsawg me ntsis (yuav tsum tau dej reducer) | Ua tau raws li cov kev xav tau ntawm cov twj tso kua mis | Qhov tseeb engineering mix design verification |
| 28-Hnub Qhuav Shrinkage | Lub hauv paus | Txo los ntawm 25% | Tseem ceeb tawg tiv thaiv | Shandong Tanfeng aqueous dispersion xeem |
4. Qhov tseeb hnyav: Vim li cas Ntxiv CNTs tig koj cov khoom rau hauv khib nyiab?
Qhov laj thawj tseem ceeb rau kev txhim kho kev ua haujlwm tsawg ntawm cov pa roj carbon nanotubes hauv plastics, roj hmab, thiab pob zeb yog qhov sib xyaw ua ke loj heev los ntawm kev sib cuam tshuam nanoscale muaj zog thiab qhov tsis zoo ntawm kev sib txuam nrog cov matrix.
Tsis muaj teeb meem npaum li cas cov ntaub ntawv theoretical, yog tias nws tsis tuaj yeem tawg, nws yog pov tseg. Cov pa roj carbon nanotubes yog lub teeb heev nrog loj heev inter-tube van der Waals rog. Yog tias cov hmoov qhuav qhuav ncaj qha mus rau hauv ntxaib - ntsia hlau extruder lossis cement tov khoom, nws tsuas yog tsis tuaj yeem sib cais. Undispersed agglomerates tsis tsuas yog ua tsis tau ntxiv tab sis ua tau tsim cov ntsiab lus kev ntxhov siab loj hauv matrix. Thaum siv cov quab yuam sab nraud, cov yas tawg ncaj qha los ntawm cov agglomerates; pob zeb muaj zog es tsis txhob plummets. Tsis tas li ntawd, qhov chaw ntawm cov pa roj carbon raj yog inert. Yog tias tsis muaj kev hloov kho qhov chaw rau lub matrix, cov hlab tsis tuaj yeem sib txuas nrog cov yas / roj hmab, thiab kev sib cuam tshuam cuam tshuam tshwm sim sai li sai tau thaum siv zog.
5. Chaw tsim tshuaj paus txhawb nqa: Shandong Tanfeng Li cas thiaj li rhuav tshem qhov kev sib raug zoo ntawm kev sib raug zoo?
Xaiv qhov chaw tsim khoom xws li Shandong Tanfeng uas yog tus tswv ntawm cov thev naus laus zis tseem ceeb ntawm kev hloov kho saum npoo thiab ua ntej -dispersion yog tib txoj kev hla mus rau qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab kev txhawb nqa cov yas / roj hmab / pob zeb nrog carbon nanotubes.
Txij li thaum lub hauv paus ua rau dag nyob rau hauv dispersion thiab interface, cov kev daws teeb meem yog "tseeb de-kev cuam tshuam thiab kev sib raug zoo." Raws li tus kws tshaj lij CNT chaw tsim khoom, Shandong Tanfeng New Material Technology Co., Ltd. qhib lub zog sib ntaus sib tua tiag tiag ntawm CNTs rau koj los ntawm cov khoom sib txuas:
Ultra-High Purity Tshem Tawm Kev Nyuaj Siab Cuam Tshuam Qhov Chaw:Hlau residues yog cov culprits ua rau lub zos embrittlement nyob rau hauv plastics thiab pob zeb. Shandong Tanfeng siv cov txheej txheem purification tshwj xeeb los tuav cov hlau seem hauv qab 20 ppm, kom ntseeg tau tias cov muab tub lim nws tus kheej tsis dhau los ua qhov tsis xws luag hauv cov matrix.
Customized Aspect Ratio phim lub Matrix:Cov yas xav tau cov raj ntev los tsim kev sib txuas; pob zeb xav tau cov raj luv luv kom tiv thaiv kev nkag mus. Los ntawm nws tus kheej -tsim catalytic system, Shandong Tanfeng tuaj yeem muab CNTs customized nrog rau qhov sib piv ntawm 100 mus rau 1500 raws li qhov xav tau, ua kom haum raws li qhov xav tau ntawm rheological thiab txhua yam ntawm cov matrices sib txawv.
Npaj-rau-Siv Carrier Masterbatches/Pastes:Targeting qhov mob ntawm cov hmoov qhuav agglomeration, Shandong Tanfeng muab hloov kho resin masterbatches rau plastics, EPDM / NBR ua ntej-dispersed masterbatches rau roj hmab, thiab siab -efficiency aqueous dispersions rau pob zeb. Los ntawm kev hloov kho qhov chaw thiab siab -siab de- cov txheej txheem agglomeration, qhov tseeb ib leeg- raj sib cais tau tiav, thiab cov pab pawg ua haujlwm tau sib haum nrog cov matrix yog grafted rau ntawm phab ntsa raj, tso cai rau ib qho - qhov sib txuas kom sib kis zoo kawg nkaus hauv cov yas, roj hmab, thiab cov cement, 3% kev txhawb nqa tiag tiag.
Xaus
Rov qab mus rau lo lus nug tseem ceeb: ntau npaum li cas kev txhim kho cov pa roj carbon nanotubes tuaj yeem ua rau cov yas / roj hmab / pob zeb? Tus nqi ntxiv yog dab tsi? Ntxiv 1-3% rau cov yas nce lub zog los ntawm ib nrab; ntxiv 2% rau roj hmab doubles hnav tsis kam; ntxiv 0.08% rau pob zeb nce compressive zog los ntawm 30% - cov no yog cov ntaub ntawv pov thawj. Tab sis tag nrho cov no yog raws li lub hauv paus ntawm kev tshem tawm agglomeration thiab bridging lub interface. Kev cia siab rau qhov kev coj dawb huv, kev hloov pauv ntawm tus kheej, thiab ntau yam - cov khoom siv ua ntej dispersion thev naus laus zis ntawm cov chaw tsim khoom xws li Shandong Tanfeng kom hla cov txheej txheem sib txawv ntawm nano mus rau macro yog tib txoj hauv kev rau cov pa roj carbon nanotubes tiag tiag los ua ib qho cuab yeej tua neeg rau kev hloov kho matrix, es tsis txhob pov tseg ntawm cov kab ntau lawm.