Kev Siv Ntau Yam ntawm Alumina Hmoov hauv Kev Lag Luam Tsheb
Kauj ruam hauv txhua lub tsheb niaj hnub thiab koj yuav pomalumina hmoov ua ntau yam haujlwm ntsiag to, tab sis cov neeg siv khoom tsis tshua pom. Niaj hnub no, cia peb tsa lub hood thiab saib seb cov hmoov dawb no koom nrog lub tsheb "tag nrho lub cev" li cas.
Ⅰ. Cov "Pob Txha Tawv" ntawm Cov Ncej Nres
"Nres tsis muaj zog? Feem ntau cov khoom siv sib txhuam tsis tawv txaus!" tus kws kho tshuab ntawm lub Hoobkas nres ntaub qhwv tau quaj thaum sim cov nres. Nws lub zog yog qhov zoo kawg nkaus: ntxiv tsuas yog 3% -5% rau cov khoom siv sib txhuam tuaj yeem ua rau qhov nyuaj ntawm qhov chaw nres ntaub qhwv. Nws zoo li ib txheej me me ntawm cov cuab yeej ua rog, tiv thaiv nws kom tsis txhob deforming lossis tawg thaum muaj kev sib txhuam kub siab. Cov ntaub ntawv los ntawm Hangzhou Jikang New Materials qhia tau hais tias qhov ntxiv ntawm cov khoom siv no txhim kho kev tiv thaiv kev hnav ntawm cov ntaub qhwv los ntawm ntau dua 15%, ua rau nws yog ib qho cuab yeej txuag nyiaj rau cov tsheb tavxij uas pib thiab nres ntau zaus.
Zoo dua yog nws lub zog ruaj khov - acid thiab alkali corrosion? Tsis muaj teeb meem! 800 ° C kub? Txawm tias tiv taus! Cov teeb meem xeb thiab qw ntawm cov hlau nres ib txwm muaj tau yooj yim daws nrog cov nano-alumina-enhanced ceramic formula.
II. "Lub Tsev Honeycomb" rau Kev Ua Kom Pa Pa Tawm Huv Si
Ntawm lub Hoobkas catalyst hauv Beijing, cov neeg ua haujlwm siv cov kua nplaum nplaum rau ntawm lub thawv ceramic zoo li lub honeycomb. Lub plawv ntawm cov kua nplaum no yog gamma-phase nano-alumina, nrog thaj tsam ntawm 130-200 m² / g. Qhov no txhais tau tias ib gram ntawm cov khoom no, nthuav tawm thoob plaws ib nrab ntawm qhov loj ntawm lub tshav pob basketball, sib npaug rau 3 npaug ntawm qhov loj.
Thaum cov pa tsheb tawm hla cov nano-coatings no, cov pa roj carbon monoxide thiab nitrogen oxide molecules raug nqus kom ruaj khov rau ntawm qhov chaw ntawm alumina. Cov catalysts hlau muaj nqis ces ua haujlwm, hloov lawv mus rau hauv cov pa roj tsis muaj teeb meem. Ib tug kws tshaj lij ntawm Jingcheng New Materials siv ib qho piv txwv: "Alumina zoo li lub scaffolding ntawm lub tsev, tso cai rau platinum thiab palladium, 'VIPs', kom zaum ruaj khov thiab ua haujlwm hnyav dua!"
Cov kev sim tau qhia tias cov catalysts siv 10-30nmalumina ua kom muaj kev ua haujlwm kub qis dua ze li ntawm 20% - txhais tau tias ntxuav cov pa tawm sai sai txawm tias thaum pib txias, qhov tseem ceeb rau kev ua tau raws li cov qauv kev tso pa tawm VIb hauv Suav teb.
III. "Cooling Patch" rau Cov Pob Roj Teeb
Cov tswv tsheb fais fab tshiab ntshai dab tsi tshaj plaws? Lub roj teeb kub dhau! Ib tug kws ua haujlwm ntawm Hangzhou Jiupeng New Materials tau tso saib ib lub raj tshuaj txhuam hniav zoo li cov tshuaj txhuam hniav thermal conductive gel: "Pom qhov ci ntsa iab ntawd? 60% ntawm nws yog alumina spherical!" Lub CY-L15S alumina thermal conductive hmoov ua haujlwm zoo li "qhov chaw txias" rau lub roj teeb cell.
Cov roj silicone ib txwm muaj cov thermal conductivity tsuas yog 1.5W/mK, thaum alumina-filled gel tuaj yeem ncav cuag ntau dua 6W/mK. Kev sim ntawm lub roj teeb los ntawm CATL qhia tau hais tias kev ntxiv alumina thermal conductive txheej txo qhov sib txawv ntawm qhov kub hauv cov roj teeb thaum lub sijhawm them ceev los ntawm 15°C mus rau hauv 5°C—qhov sib txawv ntawm qhov kub me dua, lub roj teeb lub neej ntev dua.
Txoj kev npaj nthuav dav ntawm Tianma New Materials ntxiv qhia meej txog qhov kev thov nce siab: ib qhov project los tsim 5,000 tons ntawm cov hmoov alumina uas muaj cua sov siab txhua xyoo tau pib lawm, tsom mus rau kev ua lag luam txias rau peb lub tshuab hluav taws xob ntawm cov tsheb fais fab tshiab.
IV. Tus Txiv Neej Ua Kom Muaj Zog Sib Tw
"Txo qhov hnyav yam tsis tas yuav txi lub zog" yog qhov tseem ceeb rau kev ua kom lub tsheb sib dua. Hauv chav ua qauv ntawm Shanghai Gaoquan Chemical, 80-160 gauge α-theem alumina micropowder tau muab tso rau hauv epoxy resin: "Ntxiv nws tuaj yeem txo qhov tuab ntawm phab ntsa ntawm lub bumper bracket los ntawm 0.5 hli, thaum ua rau nws lub zog nce ntxiv!"
Lub hauv paus ntsiab lus zoo ib yam li cov pob zeb ua vaj tse:cov khoom aluminatsim ib lub "micro-skeleton" hauv cov yas. Cov ntaub ntawv los ntawm ib lub tuam txhab tsim tsheb qhia tias ntxiv 30% alumina rau cov khoom siv polyamide sab hauv lub hood ntawm lub cav ua rau qhov kub ntawm lub cev hloov pauv ntawm 160 ° C mus rau 290 ° C - ib qho kev cawm siav rau cov khoom nyob ze ntawm lub turbocharger.
Tus nqi zoo dua: cov khoom siv carbon fiber kim npaum li kub, thaum cov khoom siv alumina composites tsuas yog ib feem peb ntawm tus nqi xwb.
V. Lub Plug Spark "Refractory Armor"
Tshem tawm lub qhov hluav taws xob ntawm lub cav thiab koj yuav pom lub teeb ci ntsa iab ntawm cov hmoov alumina kub siab ntawm lub insulator ceramic. Daim ntawv qhia kev sim los ntawm Shanghai Gaoquan Chemical Industry qhia tau hais tias lub cev ceramic, ua los ntawm 96% α-theem alumina, tuaj yeem tiv taus kev tawg sai sai ntawm 1700 ° C.
"Peb siv cov khoom siv av nplaum ib txwm, thiab lawv yuav tawg thiab xau tom qab 80,000 mais." Tus thawj coj ua haujlwm ntawm lub Hoobkas hluav taws xob tau tsa ib lub tshuab tshiab tsim tawm.alumina ceramics lub cev thiab hais tias, "Tam sim no, tom qab 150,000 kilometers, txawm tias cov electrodes hlawv tawm, cov ceramic tseem nyob zoo!" Qhov no yog vim alumina tus cwj pwm "ruaj khov" - nws tsis nkag mus rau qhov kub siab thiab muaj cov coefficient thermal expansion qis, ua rau nws yog lub hauv paus ruaj khov hauv "Flaming Mountain" ntawm lub tog raj kheej.
VI. Ib tug "Ace Tshiab" rau Yav Tom Ntej Battlefield
Kev tsim kho tshiab ntawm alumina tseem niaj hnub ua mus ntxiv. Alumina uas hloov kho los ntawm cov av tsawg tsawg twb tau ua nws lub cim hauv chav kuaj mob lawm: cov ntaub nres uas muaj cov yttrium oxide me me txhim kho kev tiv thaiv kev hnav los ntawm 10%, thaum cov txheej txheem catalyst uas txhim kho cerium oxide ua rau lub neej ntev dua 30%.
Cov ntawv thov tshiab dua yog nyob rau hauv kev tsav tsheb ntse - millimeter-wave radar lens xav tau cov ntaub ntawv uas yog ob qho tib si xa-nthwv dej thiab dissipating cua sov. Ib lub tuam txhab Hangzhou tab tom sim cov khoom siv alumina / silicone composite: nws dielectric tas li tseem ruaj khov ntawm 3.2, thiab nws cov thermal conductivity yog tsib npaug ntawm cov yas ib txwm muaj, ua rau radar kom raug "pom" txoj kev txawm tias nyob rau qhov kub ntawm 120 ° C.
Txij li cov tsheb siv roj ib txwm mus rau cov tsheb fais fab ntse, cov saw hlau muaj nqis ntawmalumina hmoovtxuas ntxiv nthuav dav. Tej zaum nws yuav tsis tshwm sim hauv cov ntawv qhia tsheb, tab sis thaum peb tuav lub kauj tsheb, txhua lub nres nyab xeeb, txhua qhov tso hluav taws xob zoo, thiab txhua qhov ua pa tawm huv si raug tiv thaiv ntsiag to los ntawm cov hmoov dawb no, zais ntawm qhov pom.
Thiab nrog rau kev tshwm sim ntawm cov chaw sib ntaus sib tua tshiab xws li cov ntaub thaiv cua sov ntawm lub roj teeb khov kho thiab cov phaj qhia roj hydrogen, txoj kev ntawm alumina los ua "tus yeej zais" txuas ntxiv nthuav dav.