Kev sib piv kev soj ntsuam ntawm Airgel rwb thaiv tsev Felt thiab tsoos rwb thaiv tsev cov ntaub ntawv

Aerogel, tseem hu ua xerogel. Nws yog cov khoom tawg yooj yim heev nrog cov qauv nanoporous network tsim los ntawm colloidal hais los yog polymer molecules thiab ntim nrog gaseous dispersion nruab nrab hauv qhov khoob, thiab cov tsos yog khoom. Airgel tau npaj thawj zaug los ntawm Asmeskas kws tshawb fawb Kistler hauv xyoo 1931 los ntawm hydrolyzing dej iav. Tom qab ntawd, nrog rau kev sib sib zog nqus ntawm airgel kev tshawb fawb thiab kev txhim kho ntawm cov tshuab ziab khaub ncaws ua kom qhuav, cov khoom siv uas ua rau cov airgel zoo li yuav ua kom zoo dua qub, thiab cov micropore faib feem ntau zoo ib yam, yog li qhov ntom ntawm cov khoom qis dua thiab. qhov porosity ntawm cov khoom yog qis dua. siab dua. Airgel yog lub teeb pom kev zoo tshaj plaws nyob hauv lub ntiaj teb, nrog qhov ntom ntawm tsuas yog 0.16 mg rau ib lub cubic centimeter, thiab nws cov tsos yog lub teeb xiav, los yog hu ua: "cov pa taws khov" lossis "cov pa luam yeeb xiav".

Ib qho khoom siv airgel nyob rau hauv kev ua lag luam yog nano airgel rwb thaiv tsev muaj kev xav, cov khoom siv rwb thaiv tsev hloov tau yooj yim uas ua ke nrog airgel rau hauv ib qho yooj yim substrate los ntawm cov txheej txheem tshwj xeeb. Cov khoom siv thermal rwb thaiv tsev ib txwm muaj xws li txhuas silicate, iav ntaub plaub, pob zeb ntaub plaub, roj hmab thiab yas, polyurethane, thiab lwm yam. Nyob rau hauv ob peb lub xyoo dhau los, cov khoom siv thermal rwb thaiv tsev tau ua lub luag haujlwm loj hauv lawv cov haujlwm, muab thermal rwb thaiv tsev rau kev lag luam. . , txo kev siv hluav taws xob rau cov tsev hauv nroog. Nrog rau kev txhim kho ntawm lub sijhawm thiab kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, cov khoom siv thermal rwb thaiv tsev ib txwm muaj ntau zuj zus tuaj yeem ua tsis tau raws li cov neeg xav tau rau kev ua haujlwm siab thiab txuag hluav taws xob. Yog li puas muaj cov ntaub ntawv rwb thaiv tsev tshiab los hloov cov ntaub ntawv rwb thaiv tsev no? Qhov ntawd yog nano-aerogel rwb thaiv tsev xav. Piv nrog rau cov khoom siv rwb thaiv tsev ib txwm muaj, airgel rwb thaiv tsev muaj qhov zoo hauv qab no.

1. Tsawg thermal conductivity (zoo thermal rwb thaiv tsev nyhuv)

Qhov ntsuas ntsuas thermal rwb thaiv tsev ntawm cov khoom siv thermal rwb thaiv tsev yog thermal conductivity. Lub thermal conductivity ntawm airgel rwb thaiv tsev yog {{0}}.020W (mK), thaum lub thermal conductivity ntawm ib txwm thermal rwb thaiv tsev cov ntaub ntawv yog 0.028W (mK)-0.045W (mK). Tsawg, nws muaj peev xwm ua tiav tib lub thermal rwb thaiv tsev cov nyhuv nrog lub thinner thermal rwb thaiv tsev thickness. Hauv cov lus piav qhia hauv qab no, kev siv lub tshuab nqus tsev airgel tuaj yeem txo qhov tuab ntawm txheej txheej thiab txo cov cua sov.

2. Cov nyhuv dej tsis zoo

Qhov hydrophobic tus nqi ntawm cov khoom siv rwb thaiv tsev airgel yog siab li 99 feem pua, uas tuaj yeem txo cov cim ntawm condensation thaum siv, thiab tiv thaiv zoo dua cov raj xa dej los ntawm corrosion thiab puas. Txawm li cas los xij, cov ntaub ntawv thermal rwb thaiv tsev yog yooj yim heev rau nqus dej thaum siv, ua rau muaj kev nce hauv thermal conductivity, txo cov thermal rwb thaiv tsev, thiab corrosion ntawm cov kav dej txheej.

3. Cov khoom muaj qhov kub thiab txias

Airgel rwb thaiv tsev pam yuav siv tau nyob rau hauv ntau yam kub, xws li los ntawm -200 degree qis kub mus rau 650 degree siab kub. Nyob rau hauv cov ntaub ntawv thermal rwb thaiv tsev, cov roj hmab zoo tib yam thiab cov yas tuaj yeem ncav cuag qhov kub qis tshaj ntawm -40 degree, thaum qhov kub siab tsuas yog ncav cuag 120 degree; nyob rau hauv qhov kub thiab txias, aluminium silicate tuaj yeem tiv taus kub txog li 800 degree, tab sis nws tsis tiv taus qhov kub thiab txias. Nyob rau hauv feem ntau lwm yam thermal rwb thaiv tsev cov ntaub ntawv, qhov siab tshaj plaws kub tsuas yog hais txog 100 degree.

4. National Class A tsis-combustible fire rating

Airgel rwb thaiv tsev xav tau yog cov khoom siv tsis zoo thiab tau mus txog lub teb chaws A-theem hluav taws kub ntsuas, thaum ntawm cov khoom siv rwb thaiv tsev ib txwm muaj, roj hmab, yas thiab polyurethane yog cov khoom siv organic uas nquag tua hluav taws.

5. Lub neej ua haujlwm ntev

Kev pabcuam lub neej ntawm cov rwb thaiv tsev airgel tuaj yeem ncav cuag 20 xyoo, thiab tsis tas yuav hloov cov khoom siv thaum lub sijhawm 20 xyoo, uas txo cov nqi ntawm kev hloov cov khoom rwb thaiv tsev thiab cov nqi ntawm kev tsim kho thiab kev ua haujlwm.