Cov feem ntawm nano-loj me me ua rau muaj txiaj ntsig zoo ntawm cov xim tiv thaiv, coatings, primers thiab waxes rau hlau.
Kev siv graphene nanosheets los txhim kho kev ua tau zoo yog qhov tshiab tab sis loj hlob sai hauv cheeb tsam hauv kev lag luam xim.
Thaum lawv siv hauv cov khoom tiv thaiv hlau yog qhov tshiab - tsuas yog kev lag luam hauv ob peb xyoos dhau los - graphene nanosheets (NNPs) tau raug pov thawj tias muaj kev cuam tshuam loj rau cov khoom ntawm primers, coatings, xim, waxes, thiab txawm tias lubricants.Txawm hais tias qhov kev tswj xyuas qhov sib txawv ntawm qhov sib txawv ntawm ob peb feem kaum mus rau ob peb feem pua, qhov tseeb ntawm GNP yuav dhau los ua cov khoom siv ntau yam uas tuaj yeem ua kom ntev kev pab cuam lub neej thiab ua haujlwm ntev ntawm cov txheej, txhim kho tshuaj tiv thaiv, corrosion kuj, oxidation kuj thiab puas. tsis kam.;txawm pab qhov chaw kom yooj yim tshem tawm dej thiab av.Tsis tas li ntawd, GNPs feem ntau ua raws li kev sib koom ua ke, pab lwm cov tshuaj ntxiv ua haujlwm zoo dua ntawm qhov qis dua yam tsis muaj kev cuam tshuam kev ua haujlwm.Graphene nanosheets twb tau ua lag luam nyob rau hauv cov khoom siv tiv thaiv hlau xws li tsheb sib tsoo, tshuaj tsuag thiab siv quav ciab rau primers thiab xim siv los ntawm automakers, tsev cog lus thiab txawm tias cov neeg siv khoom.Ntau daim ntawv thov (xws li marine antifouling / anticorrosive primers thiab xim) tau tshaj tawm tias yuav nyob rau theem kawg ntawm kev sim thiab xav tias yuav ua lag luam nyob rau ob peb xyoos tom ntej no.
Cov kws tshawb fawb ntawm University of Manchester (Manchester, UK) yog thawj zaug cais ib txheej graphene hauv 2004, uas lawv tau txais 2010 Nobel nqi zog hauv Physics.Graphene nanosheets - ntau txheej txheej ntawm graphene muaj los ntawm ntau tus neeg muag khoom nrog sib txawv particle thicknesses thiab nruab nrab qhov ntau thiab tsawg - yog tiaj / scaly nanosized 2D cov ntaub ntawv ntawm carbon.Zoo li lwm yam nanoparticles, lub peev xwm ntawm GNPs los hloov thiab txhim kho cov khoom ntawm macroscopic cov khoom xws li polymer films, yas / composite qhov chaw, coatings, thiab txawm pob zeb yog kiag li tag nrho ntawm feem rau lawv cov me me.Piv txwv li, lub tiaj tus, dav dav tsis tau nyias geometry ntawm GNP additives ua rau lawv zoo tagnrho rau kev muab kev tiv thaiv nto zoo yam tsis muaj txheej txheej thickness.Piv txwv li, lawv cov kev ua tau zoo hauv kev txhim kho txheej txheej feem ntau txhais tau hais tias yuav tsum muaj txheej txheej tsawg dua lossis cov txheej txheej nyias tuaj yeem siv tau.Cov khoom siv GNP kuj muaj qhov chaw siab heev (2600 m2 / g).Thaum dispersed kom zoo, lawv tuaj yeem txhim kho qhov teeb meem ntawm cov txheej txheem rau cov tshuaj lossis cov pa roj, uas ua rau muaj kev tiv thaiv corrosion thiab oxidation.Tsis tas li ntawd, los ntawm tribological taw tes ntawm view, lawv muaj tsawg heev deg shear, uas pab txhim kho hnav tsis kam thiab slip coefficient, uas yuav pab muab lub txheej zoo khawb kuj thiab repels av, dej, kab mob, algae, thiab lwm yam. cov khoom, nws yooj yim to taub vim li cas txawm tias me me ntawm GNP additives tuaj yeem ua tau zoo hauv kev txhim kho cov khoom ntawm cov khoom loj ntawm cov khoom lag luam siv txhua hnub.
Txawm hais tias lawv, zoo li lwm yam nanoparticles, muaj peev xwm zoo, cais thiab dispersing graphene nanosheets nyob rau hauv ib daim ntawv uas yuav siv tau los ntawm cov xim developers los yog txawm plastics formulations tsis yooj yim.Delaminating loj aggregates ntawm nanoparticles kom zoo dispersion (thiab dispersion nyob rau hauv txee ruaj khov khoom) rau siv nyob rau hauv plastics, films, thiab coatings tau ua pov thawj nyuaj.
Cov tuam txhab lag luam GNP feem ntau muaj ntau yam kev ua haujlwm (ib txheej txheej, ntau txheej, ntau qhov nruab nrab diameters thiab, qee zaum, nrog rau kev ua haujlwm tshuaj ntxiv) thiab ntau yam qauv (qhuav hmoov thiab kua [kua-raws li, dej-raws li lossis resin- Raws li] dispersions rau ntau yam polymer systems).Cov neeg tsim khoom lag luam tshaj plaws hauv kev lag luam tau hais tias lawv tau ua haujlwm nrog cov xim pleev xim kom pom kev sib xyaw ua ke zoo tshaj plaws ntawm cov txiaj ntsig zoo tshaj plaws los txhim kho cov xim zoo nkauj yam tsis muaj kev cuam tshuam rau lwm yam khoom tseem ceeb.Hauv qab no yog qee lub tuam txhab uas tuaj yeem sib tham txog lawv txoj haujlwm hauv kev tiv thaiv txheej rau cov hlau.
Cov khoom siv kho tsheb yog ib qho ntawm thawj thiab tseem ceeb tshaj plaws kev siv graphene hauv kev lag luam xim.Photo: Surf Protection Solutions LLC
Ib qho ntawm thawj kev lag luam daim ntawv thov ntawm graphene hlau tiv thaiv cov khoom yog nyob rau hauv automotive trim.Txawm hais tias siv rau hauv cov kua, aerosol, los yog siv quav ciab formulations, cov khoom siv kho tsheb siab no tuaj yeem siv ncaj qha rau cov xim tsheb lossis chrome, txhim kho gloss thiab qhov tob ntawm cov duab (DOI), ua kom lub tsheb yooj yim dua los ntxuav, thiab tswj kev ntxuav thiab nthuav dav.kev tiv thaiv yog deb tshaj li cov khoom siv pa.GNP-txhim kho cov khoom lag luam, qee qhov muag ncaj qha rau cov neeg siv khoom thiab lwm tus muag tsuas yog rau cov khw muag khoom zoo nkauj, sib tw nrog cov khoom lag luam ceramic (oxide) enriched (muaj silica, titanium dioxide, los yog ob qho tib si sib xyaw).Cov khoom uas muaj GNP muaj kev ua tau zoo dua thiab tus nqi siab dua vim lawv muab ntau yam txiaj ntsig tseem ceeb uas cov txheej txheem ceramic tsis tuaj yeem muab tau.Graphene lub siab thermal conductivity zoo dissipates tshav kub - ib qho txiaj ntsig rau cov khoom siv hauv hoods thiab lub log - thiab nws cov hluav taws xob hluav taws xob siab dissipates cov nqi zoo li qub, ua rau nws nyuaj rau cov plua plav kom lo.Nrog lub kaum sab xis loj (125 degrees), GNP txheej ntws nrawm dua thiab ua tau zoo dua, txo cov dej me me.Zoo heev abrasive thiab barrier zog zoo dua tiv thaiv cov xim los ntawm khawb, UV rays, tshuaj, oxidation thiab warping.Lub siab pob tshab tso cai rau GNP-raws li cov khoom lag luam khaws cov glossy, pom cov tsos uas nrov heev hauv cov haujlwm no.
Surface Protective Solutions LLC (SPS) ntawm Grafton, Wisconsin, tus tsim qauv tsim nrog lub hauv paus muaj zog hauv kev ua lag luam ntu no, muag cov tshuaj hnyav-raws li graphene txheej uas kav ntev xyoo thiab muag cov xim graphene-ua kom zoo dua dej.Serum rau qhov nrawm nrawm uas kav ntev li ob peb lub hlis.Ob qho khoom lag luam tam sim no tsuas yog muaj rau cov kws kho mob tau txais kev cob qhia thiab muaj ntawv tso cai, txawm hais tias muaj kev npaj yuav muab cov tshuaj pleev ib ce thiab lwm yam khoom muag ncaj qha rau cov neeg siv khoom yav tom ntej.Cov ntawv thov phiaj suav nrog tsheb, tsheb thauj khoom, thiab maus taus, nrog rau lwm cov khoom lag luam hais tias ze rau kev lag luam hauv tsev thiab nkoj.(SPS kuj muaj antimony / tin oxide khoom uas muab UV tiv thaiv rau saum npoo.)
"Tib txwm carnauba waxes thiab sealants tuaj yeem tiv thaiv cov xim pleev xim los ntawm lub lis piam mus rau hli," piav qhia SPS Thawj Tswj Hwm Brett Welsien."Ceramic coatings, qhia rau lub lag luam nyob rau hauv nruab nrab-2000s, tsim ib tug muaj zog daim ntawv cog lus rau lub substrate thiab muab ntau xyoo ntawm UV thiab tshuaj tiv thaiv, nws tus kheej-tshuaj qhov chaw, siab kub kuj thiab txhim kho gloss retention.Txawm li cas los xij, lawv qhov tsis muaj zog yog dej stains.Cov xim pleev xim rau saum npoo thiab cov smudges uas peb tus kheej cov kev ntsuam xyuas tau pom tias yog tshwm sim los ntawm kev tsis zoo ntawm cov cua sov hloov mus sai sai rau 2015 thaum kev tshawb fawb ntawm graphene raws li ib qho ntxiv tau pib hauv 2018 peb yog thawj lub tuam txhab hauv Teb Chaws Asmeskas tau tshaj tawm cov xim graphene hauv cov txheej txheem. ntawm kev tsim lub tuam txhab cov khoom lag luam raws li GNP, cov kws tshawb fawb pom tias cov dej stains thiab nto stains (vim kev sib cuag nrog cov noog poob, tsob ntoo kua txiv, kab thiab cov tshuaj hnyav) raug txo los ntawm qhov nruab nrab ntawm 50%, nrog rau kev txhim kho kev puas tsuaj vim. mus rau qis coefficient ntawm kev sib txhuam.
Applied Graphene Materials plc (AGM, Redcar, UK) yog ib lub tuam txhab uas muab GNP dispersions rau ntau tus neeg siv khoom tsim kho tsheb.11-xyoo-laus graphene chaw tsim tshuaj paus piav qhia nws tus kheej ua tus thawj coj hauv ntiaj teb hauv kev tsim kho thiab siv GNP dispersions hauv cov txheej txheem, cov khoom sib xyaw thiab cov khoom siv ua haujlwm.Qhov tseeb, AGM tau tshaj tawm tias kev lag luam pleev xim thiab txheej txheej tam sim no suav txog 80% ntawm nws txoj kev lag luam, yuav yog vim muaj ntau tus tswv cuab ntawm nws pab pawg kws tshaj lij los ntawm kev lag luam pleev xim thiab txheej txheej, uas pab AGM nkag siab cov ntsiab lus mob ntawm ob lub compilers thiab thaum kawg, cov neeg siv..
Halo Autocare Ltd. (Stockport, UK) siv AGM's Genable GNP dispersion nyob rau hauv ob lub EZ car care wax khoom.Tso tawm xyoo 2020, graphene wax rau lub cev vaj huam sib luag ua ke T1 carnauba wax, beeswax, thiab txiv ntseej roj nrog polymers, wetting agents, thiab GNP los hloov tus cwj pwm dej saum npoo av thiab muab kev tiv thaiv mus sij hawm ntev, cov hlaws dej zoo heev thiab cov yeeb yaj kiab, cov av qis qis, yooj yim los ntxuav, tshem tawm cov noog poob thiab txo cov dej stains zoo heev.Graphene Alloy Wheel Wax muaj tag nrho cov txiaj ntsig no, tab sis tshwj xeeb yog tsim los rau qhov kub thiab txias, nce hnav ntawm lub log thiab cov lus qhia tawm.GNP yog ntxiv rau lub hauv paus ntawm kub microcrystalline waxes, hluavtaws roj, polymers thiab curable resin systems.Halo hais tias nyob ntawm kev siv, cov khoom yuav tiv thaiv lub log rau 4-6 lub hlis.
James Briggs Ltd. (Salmon Fields, UK), uas piav qhia nws tus kheej yog ib lub tuam txhab tshuaj lom neeg hauv Europe loj tshaj plaws, yog lwm tus neeg siv khoom AGM siv GNP dispersions los tsim nws Hycote graphene anti-corrosion primer.Zinc-dawb ceev kom qhuav aerosol tshuaj tsuag tau zoo heev adhesion rau hlau thiab yas thiab yog siv los ntawm cov neeg xws li lub cev khw thiab cov neeg tau txais kev pab kom nres los yog tiv thaiv corrosion ntawm hlau nto thiab npaj cov nto rau painting thiab txheej.Lub primer muab ntau tshaj 1750 teev ntawm kev tiv thaiv corrosion nyob rau hauv raws li ASTM G-85, Appendix 5, raws li zoo raws li zoo heev barrier zog thiab yooj yam tsis muaj cracking nyob rau hauv lub cone xeem (ASTM D-522).primer lub neej.AGM tau hais tias nws tau ua haujlwm zoo nrog cov neeg siv khoom thaum lub sijhawm tsim cov txheej txheem tsim kom muaj nuj nqis ntxiv rau cov khoom thaum txwv qhov cuam tshuam rau cov nqi khoom.
Tus naj npawb thiab hom GNP-txhim kho cov khoom siv kho tsheb hauv kev ua lag luam tau loj hlob sai.Qhov tseeb, lub xub ntiag ntawm graphene yog touted raws li cov txiaj ntsig kev ua tau zoo thiab tseem ceeb ntawm cov khoom lag luam.|James Briggs Ltd. (sab laug), Halo Autocare Ltd. (sab xis sab xis) thiab Surface Protective Solutions LLCSurface Protective Solutions LLC (hauv qab sab xis)
Anti-corrosion coatings yog thaj chaw loj hlob ntawm daim ntawv thov rau GNP, qhov twg nanoparticles tuaj yeem txuas ntxiv kev txij nkawm, txo qhov kev puas tsuaj corrosion, ncua kev tiv thaiv kev tiv thaiv, thiab txo cov nqi tswj cov cuab yeej cuab tam.|Hershey Coatings Co., Ltd.
GNPs tau siv ntau dua hauv cov txheej txheem tiv thaiv corrosion thiab primers hauv qhov nyuaj (C3-C5) ib puag ncig.Adrian Potts, CEO ntawm AGM, piav qhia: "Thaum muab tso rau hauv cov kuab tshuaj los yog dej-raws li txheej, graphene tuaj yeem muab cov khoom zoo tiv thaiv corrosion thiab txhim kho kev tiv thaiv corrosion."cuam tshuam los ntawm kev ncua lub neej ntawm cov khoom muaj nqis, txo qhov zaus thiab tus nqi ntawm kev saib xyuas khoom vaj khoom tsev, thiab rau cov khoom siv dej los yog cov khoom uas muaj cov tshuaj lom ntau ntxiv xws li zinc tsis tas yuav tsum tau siv lossis siv.thaj tsam ntawm kev tsom xam thiab lub sijhawm nyob rau tsib xyoos tom ntej."Corrosion yog ib qho loj, xeb tsis yog lub ntsiab lus zoo siab heev vim tias nws sawv cev rau cov neeg siv khoom tsis zoo, nws yog ib qho teeb meem loj," nws hais ntxiv.
Ib tus neeg siv khoom AGM uas tau ua tiav cov tshuaj tsuag aerosol primer yog Halfords Ltd. nyob hauv Washington, UK, tus thawj coj hauv tebchaws Askiv thiab Irish cov khw muag khoom ntawm tsheb, cov cuab yeej, cov cuab yeej mus pw hav zoov thiab tsheb kauj vab.Lub tuam txhab graphene anti-corrosion primer yog zinc-dawb, ua rau nws ntau tus phooj ywg environmentally.Nws tau hais tias muaj kev ua tau zoo heev rau cov hlau nto nrog rau cov hlau me me, txhuas thiab Zintec, sau rau hauv qhov chaw me me thiab qhuav hauv 3-4 feeb rau sandable matte tiav hauv 20 feeb xwb.Nws kuj tau dhau 1,750 teev ntawm cov tshuaj ntsev ntsev thiab lub khob ntsuas tsis muaj qhov tawg.Raws li Halfords, cov primer muaj qhov zoo sag tsis kam, tso cai rau ntau dua qhov tob ntawm txheej, thiab muab cov khoom thaiv zoo heev kom ntev lub neej ntawm cov txheej.Tsis tas li ntawd, cov primer muaj kev sib raug zoo nrog cov tiam tshiab ntawm cov xim dej.
Alltimes Coatings Ltd. los ntawm Stroud, UK, tus kws tshaj lij hauv kev tiv thaiv corrosion ntawm cov ru tsev hlau, siv AGM dispersions hauv nws qhov Advantage Graphene kua vov tsev rau cov tsev lag luam thiab kev lag luam.Cov khoom no nce qhov hnyav tsawg kawg nkaus ntawm lub ru tsev, yog huab cua thiab UV resistant, tsis muaj cov kuab tshuaj, tsis muaj tshuaj lom organic tebchaw (VOCs) thiab isocyanates.Tsuas yog ib txheej yog siv rau qhov chaw npaj kom zoo, lub cev muaj feem cuam tshuam thiab elasticity siab, extensibility zoo heev thiab tsis muaj shrinkage tom qab kho.Nws tuaj yeem siv rau qhov kub ntawm 3-60 ° C / 37-140 ° F thiab rov siv dua.Qhov sib ntxiv ntawm graphene ho txhim kho corrosion kuj, thiab cov khoom tau dhau 10,000-teev nruab nrab ntsev tsuag tshuaj ntsuam (ISO9227: 2017), ncua Autotech lub warranty lub neej ntawm 20 mus rau 30 xyoo.Txawm hais tias tsim kom muaj kev tiv thaiv zoo tiv thaiv dej, oxygen thiab ntsev, microporous txheej yog breathable.Txhawm rau pab txhawb kev qhuab qhia kev tsim vaj tsev, Alltimes tau tsim cov txheej txheem txuas ntxiv kev tshaj lij (CPD) cov ntaub ntawv.
Blocksil Ltd. los ntawm Lichfield, UK, piav qhia nws tus kheej yog ib lub tuam txhab uas tau txais txiaj ntsig zoo coatings muab cov kev siv zog thiab kev txuag nyiaj rau cov neeg siv khoom hauv kev lag luam tsheb, tsheb ciav hlau, kev tsim kho, lub zog, marine thiab aerospace industries.Blocksil tau ua haujlwm ze nrog AGM los tsim ib tiam tshiab ntawm MT anti-corrosion txheej nrog graphene-txhim kho sab saum toj txheej rau cov qauv hlau hauv qhov chaw qhib thiab corrosive.Muaj nyob rau hauv ntau yam xim, VOC thiab hnyav dawb, ib lub tsho tiv no tsis tshua muaj dej resistant thiab tau tshaj 11,800 teev ntawm nruab nrab ntsev tsuag tshuaj ntsuam rau 50% ntau durability dua li yav dhau los cov khoom.Hauv kev sib piv, Blocksil hais tias unplasticized polyvinyl chloride (UPVC) feem ntau kav ntev li 500 teev hauv qhov kev sim no, thaum cov xim epoxy kav 250-300 teev.Lub tuam txhab tseem hais tias cov xim tuaj yeem siv rau cov hlau ntub dej me ntsis thiab tiv thaiv cov dej nkag sai tom qab thov.Piav tias yog nto resistant, nws yuav xeb yog tias cov khib nyiab xoob raug tshem tawm thiab kho tsis muaj cua sov sab nraud kom nws tuaj yeem siv tau hauv thaj teb.Cov txheej txheem muaj ntau yam ntawm 0 txog 60 ° C / 32-140 ° F thiab tau dhau qhov kev ntsuas hluav taws nruj (BS476-3: 2004, CEN / TS1187: 2012-Test 4 (xws li EN13501-5: 2016-test 4) 4)) yog graffiti resistant thiab muaj zoo heev UV thiab huab cua tsis kam.Cov txheej txheem tau tshaj tawm tias tau siv rau ntawm lub tshuab tua hluav taws xob ntawm RTÉ (Raidió Teilifís Éireann, Dublin, Ireland) thiab ntawm kev sib txuas lus satellites ntawm Avanti Communications Group plc (London) thiab ntawm segmented thiab parallel kem (SSP) railway lem, qhov twg nws dhau EN45545 -2:2013, R7 to HL3.
Lwm lub tuam txhab siv GNP-txhim kho cov txheej txheem los tiv thaiv hlau yog thoob ntiaj teb automotive tsum Martinrea International Inc. (Toronto), uas siv graphene-reinforced polyamide (PA, kuj hu ua nylon) coated neeg nrog caij tsheb.(Vim nws cov khoom siv thermoplastic zoo, Montreal tus neeg muag khoom GNP NanoXplore Inc. muab Martinrea nrog cov txheej txheem tag nrho GNP / PA txheej.) Cov khoom raug tshaj tawm kom txo qhov hnyav li ntawm 25 feem pua thiab muab kev tiv thaiv zoo dua, txhim kho lub zog zoo dua, thiab txhim kho tshuaj lom neeg. kev tiv thaiv.kev tiv thaiv tsis tas yuav muaj kev hloov pauv rau cov cuab yeej tsim khoom lossis cov txheej txheem uas twb muaj lawm.Martinrea tau sau tseg tias kev txhim kho ntawm cov txheej txheem tuaj yeem txuas ntxiv nws daim ntawv thov mus rau ntau yam ntawm cov khoom siv tsheb, tshwj xeeb tshaj yog cov tsheb hluav taws xob.
Nrog rau kev ua tiav ntawm ntau qhov kev sim mus sij hawm ntev, kev tiv thaiv marine corrosion thiab anti-fouling zoo li yuav dhau los ua daim ntawv thov tseem ceeb ntawm GNP.Graphene additive Talga Group Ltd. yog tam sim no raug sim hauv dej hiav txwv tiag tiag ntawm ob lub nkoj loj.Ib lub nkoj tau nyuam qhuav ua tiav 15-lub hlis kev tshuaj xyuas thiab nws tau hais tias cov ntu coated nrog GNP reinforced primer pom qhov sib piv lossis zoo dua li cov qauv qub uas tsis muaj kev txhawb nqa, uas twb pom cov cim ntawm corrosion.|Targa Group Co., Ltd.
Ntau tus neeg tsim cov xim pleev xim thiab cov chaw tsim khoom graphene tau ua haujlwm nyuaj los tsim cov tshuaj tiv thaiv corrosion / anti-fouling coatings rau kev lag luam marine.Muab qhov kev ntsuam xyuas dav thiab ntev ntev yuav tsum tau txais kev pom zoo hauv cheeb tsam no, feem ntau ntawm cov tuam txhab uas peb xam phaj tau qhia tias lawv cov khoom tseem nyob rau theem kev sim thiab kev soj ntsuam thiab cov ntawv cog lus tsis qhia tawm (NDAs) tiv thaiv lawv los ntawm kev sib tham txog lawv txoj haujlwm hauv teb.txhua tus tau hais tias kev sim ua los txog niaj hnub no tau pom cov txiaj ntsig tseem ceeb los ntawm kev koom ua ke GNP rau hauv kev taug kev hauv hiav txwv.
Ib lub tuam txhab uas tsis tuaj yeem piav qhia txog nws txoj haujlwm yog Singapore-based 2D Materials Pte.Ltd., uas tau pib tsim GNP ntawm lub ntsuas ntsuas hauv 2017 thiab kev lag luam ntsuas xyoo tas los.Nws cov khoom siv graphene tshwj xeeb yog tsim los rau kev lag luam xim, thiab lub tuam txhab tau hais tias nws tau ua haujlwm nrog ob lub nkoj loj tshaj plaws los tiv thaiv corrosion txheej xa khoom txij li xyoo 2019 los tsim cov xim pleev xim rau cov khoom lag luam.2D Cov Khoom Siv kuj tau hais tias nws tab tom ua haujlwm nrog lub tuam txhab hlau loj los koom nrog graphene rau hauv cov roj siv los tiv thaiv cov hlau thaum thauj thiab khaws cia.Raws li Chwang Chie Fu, tus kws tshaj lij hauv kev siv 2D cov ntaub ntawv, "graphene muaj qhov cuam tshuam loj tshaj plaws ntawm cov txheej txheem ua haujlwm.""Piv txwv li, rau cov txheej txheem tiv thaiv corrosion hauv kev lag luam marine, zinc yog ib qho ntawm cov khoom xyaw tseem ceeb.Graphene tuaj yeem siv los txo lossis hloov zinc hauv cov txheej txheem no.Ntxiv tsawg dua 2% graphene tuaj yeem ua rau lub neej ntawm cov txheej txheem no, uas txhais tau hais tias qhov no ua rau nws muaj txiaj ntsig zoo heev uas tsis kam lees.
Talga Group Ltd. (Perth, Australia), lub tuam txhab roj teeb anode thiab graphene tau tsim nyob rau xyoo 2010, tshaj tawm ua ntej xyoo no tias nws cov Talcoat graphene additive rau primers tau pom cov txiaj ntsig zoo hauv kev sim dej hiav txwv hauv ntiaj teb tiag.Cov additive yog tsim tshwj xeeb rau kev siv nyob rau hauv marine coatings los txhim kho corrosion kuj, txo cov xim poob nyob rau hauv dej ecosystems thiab txhim kho kev ua tau zoo los ntawm kev ua kom qhuav dock lub caij.Qhov tseem ceeb, cov khoom siv qhuav-dispersible no tuaj yeem muab tso rau hauv cov txheej hauv situ, uas sawv cev rau kev lag luam loj hlob ntawm GNP cov khoom, uas feem ntau yog muab los ua kua dispersions kom muaj kev sib xyaw zoo.
Nyob rau hauv 2019, cov additive tau premixed nrog ib tug ob-pob epoxy primer los ntawm ib tug ua txheej txheej khoom thiab siv rau lub hull ntawm ib tug loj 700m² / 7535ft² thawv nkoj raws li ib feem ntawm lub hiav txwv sim los ntsuam xyuas cov kev ua tau zoo ntawm txheej nyob rau hauv hnyav marine ib puag ncig.(Los muab qhov tseeb hauv paus ntsiab lus, ib txwm sau npe primer tau siv rau lwm qhov kom paub qhov txawv ntawm txhua yam khoom, ob qho tib si primers ces topcoated.) Thaum lub sijhawm, daim ntawv thov no tau suav tias yog daim ntawv thov graphene loj tshaj plaws hauv ntiaj teb.Lub nkoj tau soj ntsuam 15-lub hlis thiab cov seem coated nrog GNP reinforced primer tau tshaj tawm tias ua tau zoo sib piv lossis zoo dua li cov hauv paus ntsiab lus yam tsis muaj kev txhawb nqa, uas twb pom cov cim ntawm corrosion.Qhov kev sim thib ob cuam tshuam nrog cov neeg siv cov xim sib tov cov hmoov GNP additive rau ntawm qhov chaw nrog rau ob lub pob epoxy xim los ntawm lwm tus neeg muab xim pleev xim thiab tshuaj tsuag rau ib feem tseem ceeb ntawm lub thawv loj.Ob qhov kev foob tseem tab tom ua.Talga tau sau tseg tias kev txwv tsis pub mus ncig thoob ntiaj teb txuas ntxiv cuam tshuam rau kev mus ncig thoob ntiaj teb, ncua xov xwm txog yuav ua li cas kev pab them nqi ua haujlwm ntawm lub nkoj thib ob.Kev txhawb nqa los ntawm cov txiaj ntsig no, Talga tau hais tias tab tom tsim cov tshuaj tiv thaiv fouling marine coatings, anti-microbial coatings rau hlau thiab yas, anti-corrosion txheej rau cov hlau loj, thiab cov txheej txheem txheej rau cov ntim yas.
GNP txoj kev loj hlob tau tshaj tawm nyob rau lub Peb Hlis los ntawm Advanced Materials Research Laboratory Toray Industries, Inc. (Tokyo), tau txais kev txaus siab ntawm cov txheej txheem tsim cov txheej txheem, suav nrog kev tsim cov tshuaj ultrafine dispersion graphene, uas tau hais kom nthuav tawm cov fluidity zoo heev.High conductivity ua ke nrog siab hluav taws xob thiab thermal conductivity.Qhov tseem ceeb ntawm txoj kev loj hlob yog kev siv cov khoom tshwj xeeb (tsis muaj npe) polymer uas tau hais los tswj cov viscosity los ntawm inhibiting cov aggregation ntawm graphene nanosheets, yog li daws qhov teeb meem ntev ntawm kev tsim kom muaj kev sib xyaw ua ke ntawm GNP.
Piv rau cov pa GNP dispersions, Toray tus tshiab high-fluidity khoom, uas muaj ib tug tshwj xeeb polymer uas tswj viscosity los ntawm kev tiv thaiv graphene nanoparticle aggregation, ua heev concentrated, ultra-fine GNP dispersions nrog siab thermal thiab hluav taws xob conductivity thiab nce fluidity rau yooj yim tuav thiab sib tov.|Torey Industries Co., Ltd.
"Thinner graphene nyiam sib sau ua ke yooj yim dua, uas txo cov dej ntws thiab ua rau nws nyuaj rau siv cov khoom sib xyaw ua ke," piav qhia Toray tus kws tshawb fawb Eiichiro Tamaki."Yuav kom tsis txhob muaj teeb meem sticking, nanoplates feem ntau yog diluted nyob rau hauv ib tug tsawg concentration daws.Txawm li cas los xij, qhov no ua rau nws nyuaj rau kev ua tiav kom txaus siab kom tau txais txiaj ntsig zoo ntawm graphene. "ultra-fine GNP dispersion thiab nce fluidity kom yooj yim ntawm kev tuav thiab sib xyaw.Cov ntawv thov thawj zaug tau hais tias suav nrog cov roj teeb, hluav taws xob hluav taws xob rau kev luam ntawv, thiab cov tshuaj tiv thaiv corrosion los tiv thaiv dej thiab oxygen los ntawm kev nkag mus.Lub tuam txhab tau tshawb fawb thiab tsim graphene rau 10 xyoo thiab thov kom tau tsim cov tshuab dispersion kom graphene pheej yig dua.Cov kws tshawb fawb ntseeg tias qhov tshwj xeeb polymer cuam tshuam rau ob qho tib si nanosheets lawv tus kheej thiab qhov nruab nrab dispersion, Tamaki tau sau tseg, hais tias nws ua haujlwm tshwj xeeb nrog cov kuab tshuaj muaj zog heev.
Muab tag nrho cov txiaj ntsig muaj peev xwm uas GNP muab, nws tsis yog qhov xav tsis thoob tias ntau tshaj 2,300 GNP-txog patents tau muab rau cov lag luam thiab kev kawm.Cov kws tshaj lij kwv yees kev loj hlob tseem ceeb rau cov thev naus laus zis no, hais tias nws yuav cuam tshuam ntau dua 45 kev lag luam, suav nrog cov xim pleev xim thiab txheej txheej.Ntau yam tseem ceeb cuam tshuam kev loj hlob raug tshem tawm.Ua ntej, kev txhawj xeeb ntawm ib puag ncig, kev noj qab haus huv thiab kev nyab xeeb (EHS) tej zaum yuav muaj teeb meem rau cov nanoparticles tshiab raws li kev pom zoo ntawm kev tswj hwm (xws li European Union's REACH (Kev Sau Npe, Kev Ntsuam Xyuas, Kev Tso Cai thiab Kev Txwv Cov Tshuaj) yog eased.Tsis tas li ntawd, ib tug xov tooj ntawm cov neeg muab khoom siv tau kuaj xyuas GNP cov ntaub ntawv ntxiv kom nkag siab zoo dua yuav tshwm sim thaum txau.Graphene cov neeg tsim khoom tau taw qhia sai vim tias GNP yog tsim los ntawm cov ntxhia graphite uas tshwm sim, lawv cov txheej txheem yog ib puag ncig zoo dua li ntau lwm yam khoom ntxiv.Qhov kev sib tw thib ob yog tau txais txaus ntawm tus nqi pheej yig, tab sis qhov no kuj tau hais txog thaum cov tuam txhab nthuav dav lawv cov tshuab tsim khoom.
"Qhov teeb meem tseem ceeb rau kev qhia txog graphene rau hauv kev lag luam yog lub peev xwm ntawm graphene cov tuam txhab tsim khoom, nrog rau cov khoom lag luam siab heev," piav qhia Tarek Jalloul ntawm Lead Carbon Technologies, NanoXplore technology project."Ob qhov teeb meem no tau dhau los thiab cov khoom lag luam graphene txhim kho tau nkag mus rau theem kev lag luam vim lub zog thiab tus nqi sib txawv yog nqaim.Piv txwv li, kuv tus kheej lub tuam txhab tau tsim nyob rau hauv 2011 thiab tam sim no muaj peev xwm tsim tau 4,000 t / t ib xyoos twg, raws li IDTechEx tshawb fawb (Boston), peb yog cov loj tshaj plaws graphene chaw tsim tshuaj paus nyob rau hauv lub ntiaj teb no.Peb qhov chaw tsim khoom tshiab tau ua tiav tag nrho thiab muaj cov qauv qauv uas tuaj yeem hloov tau yooj yim yog tias xav tau kev nthuav dav.Lwm qhov teeb meem loj rau graphene kev lag luam daim ntawv thov yog qhov tsis muaj kev tswj hwm kev pom zoo, tab sis qhov no tau tshwm sim tam sim no. "
"Cov khoom muaj los ntawm graphene tuaj yeem cuam tshuam loj rau kev lag luam xim thiab txheej txheej," Velzin ntxiv."Txawm hais tias graphene muaj tus nqi siab dua ib gram dua li lwm cov khoom siv ntxiv, nws yog siv hauv cov nyiaj me me thiab muab cov txiaj ntsig zoo uas tus nqi mus sij hawm ntev yog pheej yig.tsim graphene ?coatings ??
"Cov khoom no ua haujlwm thiab peb tuaj yeem pom tias nws zoo heev," Potts ntxiv."Ntxiv graphene rau ib daim ntawv qhia, txawm tias me me, tuaj yeem muab cov khoom hloov pauv."
Peggy Malnati is a regular contributor to PF’s sister publications CompositesWorld and MoldMaking Technology magazines and maintains contact with clients through her regional office in Detroit. pmalnati@garpub.com
Masking yog siv nyob rau hauv feem ntau cov hlau xov ua hauj lwm qhov twg tsuas yog qee qhov chaw ntawm qhov chaw ntawm qhov yuav tsum tau ua tiav.Hloov chaw, daim npog ntsej muag tuaj yeem siv rau ntawm qhov chaw uas tsis tas yuav kho lossis yuav tsum zam.Tsab ntawv xov xwm no suav nrog ntau yam ntawm cov hlau ua tiav daim npog ntsej muag, suav nrog cov ntawv thov, cov txheej txheem, thiab ntau hom kev npog ntsej muag siv.
Txhim kho adhesion, nce corrosion thiab hlwv tsis kam, thiab txo cov txheej txheem sib cuam tshuam nrog cov khoom yuav tsum tau kho ua ntej.
Post lub sij hawm: Nov-28-2022