Hauv kev tsim hluav taws xob ua haujlwm, cov khoom siv hluav taws xob tauj dua tshiab, thiab cov tshuab ua haujlwm, cov ntaub ntawv thermal rwb thaiv tsev tsis tshua muaj kev sib tham, tab sis lawv ncaj qha cuam tshuam seb lub zog siv tau zoo. Nyob rau hauv xyoo tas los no, silica airgel tau pib tshwm sim ntau zaus hauv kev sib tham txog lub zog-txuag kev kho dua tshiab thiab siv cov khoom siv tshiab. Los ntawm cov ntaub ntawv kuaj mus rau engineering tej yaam num, nws cov tsos yog feem ntau nrog ib lo lus nug: Puas yog qhov no siab - cov ntaub ntawv ua tau zoo tiag tiag ntau tus phooj ywg environmentally?
Nws thermal rwb thaiv tsev muaj peev xwm
Silica airgel thawj zaug nyiam tsis yog vim nws "kev phooj ywg ib puag ncig," tab sis vim nws qhov kev ua tau zoo heev. Raws li cov khoom ntxeem tau, airgel tau ntim nrog nanoscale pores, thiab huab cua nyob hauv cov chaw me me no, ua rau nws nyuaj rau cua sov los ntawm convection thiab conduction. Qhov no tso cai rau nws kom ua tiav cov thermal rwb thaiv tsev tseem ceeb txawm tias nyias nyias.
Hauv qee qhov kev tsim kho vaj tsev, cov neeg cog lus tau pom tias siv airgel tuaj yeem txhim kho kev ua haujlwm rwb thaiv tsev yam tsis muaj qhov nce phab ntsa tuab; nws tseem tuaj yeem ua haujlwm tau zoo nyob rau hauv qhov chaw kaw rau sab nrauv ntawm cov kav dej thiab cov khoom siv. Cov yam ntxwv ntawm "siv tsawg dua, ua tiav ntau dua" tau maj mam ua rau nws raug suav hais tias yog ib tus neeg sawv cev ntawm cov khoom siv rwb thaiv tsev siab tshaj -.
Lub zog- txuag cov teebmeem feem ntau tshwm sim thaum lub sijhawm siv
Los ntawm qhov kev xav ntawm sustainability, ib puag ncig tus phooj ywg ntawm cov khoom siv tsis tuaj yeem txiav txim siab ntawm nws cov txheej txheem tsim khoom. Rau cov ntaub ntawv rwb thaiv tsev, qhov tseem ceeb tshaj plaws yog qhov kev siv hluav taws xob ntau npaum li cas tuaj yeem txo tau thaum siv.
Ib feem tseem ceeb ntawm lub tsev siv hluav taws xob yog los ntawm cov cua txias thiab cua sov. Qhov ruaj khov ntawm kev ua haujlwm thermal rwb thaiv tsev ntau dua, qhov ua haujlwm zaus ntawm cov khoom siv qis dua, thiab qhov tseem ceeb dua qhov ntev -lub sij hawm txuag hluav taws xob yuav yog. Qhov zoo ntawm airgel nyob rau theem no yog ntau dua nyob rau hauv "ntev-lub sij hawm txuag hluav taws xob" es tsis yog ib qho kev txhim kho lub sijhawm.
Lub logic zoo ib yam nyob rau hauv kev lag luam sector. Thaum tshav kub kub poob los ntawm siab - cov kav dej kub thiab cov khoom siv ncaj qha cuam tshuam rau kev siv hluav taws xob. Ib txheej rwb thaiv tsev ruaj khov txhais tau hais tias cov khoom siv hluav taws xob tsawg dua thiab cov nqi khiav lag luam qis dua. Los ntawm qhov kev xav no, tus nqi ib puag ncig ntawm airgel tsis yog hais txog cov khoom siv nws tus kheej yog "ntau ntsuab," tab sis qhov txo qis hauv lub zog pov tseg thoob plaws hauv nws lub neej kev pabcuam.
Tus nqi tiag tiag ntawm cov txheej txheem tsim khoom
Txawm li cas los xij, airgel tsis yog "yooj yim-rau- tsim khoom" cov khoom. Nws txoj kev npaj muaj ntau cov kauj ruam, suav nrog sol- cov tshuaj tiv thaiv gel, kev laus, thiab ziab, nrog rau cov txheej txheem kom qhuav yuav tsum tau siv cov cuab yeej ntse thiab kev siv lub zog loj. Qhov no yog qhov laj thawj tseem ceeb vim li cas airgel keeb kwm tau kim thiab nws cov ntawv thov txwv.
Nyob rau hauv xyoo tas los no, nrog rau kev nce qib ntawm atmospheric siab ziab tshuab thiab cov txheej txheem hnyav rov qab, cov txheej txheem tsim tau maj mam ua kom zoo dua. Txo kev siv hluav taws xob hauv ib chav tsev thiab txhim kho cov khoom siv raw khoom tau txo qis ib puag ncig lub nra ntawm airgel manufacturing. Txawm hais tias nws cov txheej txheem tsim khoom tseem yog qhov nyuaj dua li cov khoom siv rwb thaiv tsev ib txwm muaj, qhov sib txawv yog nqaim.
Cov kev hloov pauv tau coj los ntawm Kev Pabcuam Lub Neej
Piv rau qee cov ntaub ntawv rwb thaiv tsev uas muaj hnub nyoog yooj yim los yog yuav tsum tau hloov ntau zaus, airgel nthuav tawm qhov kev ua haujlwm ruaj khov nyob rau hauv cov nqe lus ntawm siab -kub tsis kam, aging resistance, thiab hluav taws kub. Raws li kev tsim qauv tsim nyog thiab kev tsim kho, nws lub neej kev pabcuam feem ntau tuaj yeem khaws cia rau lub sijhawm ntev.
Qhov no txhais tau hais tias, los ntawm lub neej voj voog txoj kev xav, nws tsis tas yuav rov qab tshem tawm thiab hloov pauv. Kev txo qis ntawm kev tsim kho lub voj voog ua rau txo qis kev thauj mus los thiab cov nqi pov tseg. Qhov "tsawg-kev tu" tus yam ntxwv no feem ntau muaj nuj nqis hauv kev tsim kho vaj tse ntau dua li cov khoom siv kev ua tau zoo, thiab nws kuj tseem txhim kho kev siv cov peev txheej tag nrho rau qee yam.
Qhov Tseeb Ntawm Kev Rov Ua Dua thiab Pov Tseg
Los ntawm kev xav txog kev rov ua dua tshiab, aerogels tseem muaj cov kev sib tw ua tau zoo. Hauv kev siv tswv yim, lawv feem ntau yog siv hauv cov khoom sib xyaw nrog fibers, films, lossis lwm yam substrates, ua rau kev sib cais tom qab thiab rov ua dua nyuaj. Ib qho loj, loj- nplai rov ua dua tshiab tseem nyob rau theem tshawb nrhiav.
Txawm li cas los xij, los ntawm ib puag ncig kev nyab xeeb, silica airgel nws tus kheej yog tshuaj lom neeg ruaj khov, tsis muaj halogens, thiab tsis tso cov pa phem hauv qhov kub thiab txias. Qhov no ua rau nws muaj qee qhov zoo hauv cov tsev pej xeem thiab cov phiaj xwm kev lag luam, thiab txo cov kev pheej hmoo ib puag ncig thaum siv.
Nws txoj haujlwm tam sim no
Zuag qhia tag nrho, silica airgel tsis yog "cov khoom siv ntsuab zoo meej," tab sis nws qhia tau tias muaj peev xwm ua tau zoo nyob rau hauv cov nqe lus ntawm siab - rwb thaiv tsev ua tau zoo, ntev - siv sijhawm, thiab kev nyab xeeb. Nws cov nqi ib puag ncig yog ntau dua nyob rau hauv ntev - lub sij hawm txuag hluav taws xob thiab txo cov peev txheej pov tseg, tsis yog siv hluav taws xob tsawg hauv ib txheej txheem.
Nrog kev txhim kho cov txheej txheem tsim khoom thiab kev ua tiav daim ntawv thov, airgel yog maj mam txav los ntawm ib qho niche, siab - cov ntaub ntawv kawg mus rau ntau yam kev siv engineering thiab kev tsim kho. Tawm tsam keeb kwm yav dhau los ntawm kev xav tau kev loj hlob ntxiv ntawm kev siv hluav taws xob, cov khoom siv no tab tom nrhiav nws qhov chaw - tsis yog kev daws teeb meem thoob ntiaj teb, tab sis yog qhov kev xaiv zoo dua rau cov teeb meem tshwj xeeb.