Pom meej ntom yog hais txog qhov sib piv ntawm qhov loj ntawm cov khoom rau nws qhov ntim pom tseeb. Pom meej ntim yog qhov ntim tiag tiag ntxiv rau qhov ntim ntim kaw. Nws yog hais txog qhov sib piv ntawm qhov chaw nyob los ntawm cov khoom siv nyob rau hauv qhov kev txiav txim ntawm lub zog sab nraud rau qhov loj ntawm cov khoom, feem ntau qhia hauv kilograms ib cubic meter (kg / m³). Nws tuaj yeem cuam tshuam qhov porosity, hardness, elasticity thiab lwm yam khoom ntawm cov khoom. Rau cov ntaub ntawv nrog cov duab tsis tu ncua, lub ntim tuaj yeem ntsuas ncaj qha; rau cov ntaub ntawv nrog cov duab tsis sib xws, lub qhov hws tuaj yeem raug kaw nrog cov khoom siv quav ciab, thiab tom qab ntawd qhov ntim tuaj yeem ntsuas los ntawm cov kua dej. Qhov pom meej ntom ntom feem ntau yog ntsuas hauv lub xeev ntawm cov khoom siv, uas yog, lub xeev qhuav khaws cia hauv huab cua ntev. Rau foamed roj hmab thiab yas rwb thaiv tsev cov ntaub ntawv, qhov piv ntawm kaw-cell npuas npuas rau roj hmab thiab yas Cheebtsam sib txawv, thiab muaj ib tug ceev ntau yam nrog cov thermal conductivity qis tshaj.
Cov porosity siab tuaj yeem ua tau zoo insulate; tab sis qhov ceev tsawg dhau tuaj yeem ua rau deformation thiab tawg. Nyob rau tib lub sijhawm, lub zog compression nce nrog kev nce hauv ntom ntom, kom ua rau lub sijhawm ntev ntawm cov khoom. Nyob rau hauv cov nqe lus ntawm thermal conductivity, qhov me me qhov ntom, qhov qis thermal conductivity thiab qhov zoo dua thermal rwb thaiv tsev; Tab sis yog hais tias lub ntom ntom dhau lawm, hloov cua sov sab hauv thiab cov thermal rwb thaiv tsev nyhuv tsawg. Yog li ntawd, thaum xaiv cov ntaub ntawv thermal rwb thaiv tsev, nws yog ib qho tsim nyog yuav tsum ua tib zoo xav txog lawv qhov ntom ntom kom ntseeg tau tias ntau yam khoom sib npaug kom tau raws li qhov xav tau ntawm kev siv sib txawv.
Bulk density yog hais txog qhov ntom ntawm cov khoom nws tus kheej, uas yog, qhov sib piv ntawm qhov chaw nyob los ntawm ib qho khoom rau nws qhov loj. Nyob rau hauv cov ntaub ntawv thermal rwb thaiv tsev, nws feem ntau yog hais txog qhov sib piv ntawm cov huab cua sab hauv thiab qhov loj ntawm ib chav tsev, qhia hauv kilograms ib cubic meter (kg / m³). Zoo ib yam li pom tseeb, qhov ntom ntom kuj yog ib qho tseem ceeb rau kev ntsuas kev ua haujlwm ntawm cov ntaub ntawv thermal rwb thaiv tsev, uas feem ntau tuaj yeem cuam tshuam qhov hnyav, dej nqus, thermal rwb thaiv tsev thiab lwm yam khoom ntawm cov khoom.
Yog li, txawm hais tias ob qho tib si pom ntom thiab bulk ntom txog qhov nthe thiab porosity ntawm cov ntaub ntawv rwb thaiv tsev, lawv muaj qee qhov sib txawv:
1. Cov ntsiab lus txawv
Qhov pom tseeb ntawm cov ntaub ntawv thermal rwb thaiv tsev feem ntau ntsuas cov khoom ntawm cov khoom xws li porosity thiab elasticity, thiab tuaj yeem cuam tshuam qhov kev sib raug zoo ntawm huab cua thiab qhov tseeb hauv cov khoom.
Bulk density yog hais txog qhov ntom ntawm cov khoom siv rwb thaiv tsev nws tus kheej, thiab tsis cuam tshuam nrog cov khoom ntawm cov qauv sab hauv.
2. Cov kev suav sib txawv
Qhov pom meej ntom ntom ntawm cov ntaub ntawv rwb thaiv tsev feem ntau yog xam los ntawm kev ntsuas qhov loj thiab ntim ntawm cov qauv, thaum lub bulk ntom yog xam los ntawm kev ntsuas qhov hnyav ntawm cov qauv ntawm cov khoom uas paub txog ntim.
3. Tej zaum yuav muaj qhov yuam kev
Txij li thaum xam qhov pom tseeb ceev ntawm cov khoom siv rwb thaiv tsev yog nyob ntawm qhov ntim ntawm cov qauv compressed, nws tsis tuaj yeem sawv cev rau tag nrho cov qauv ntawm cov khoom. Nyob rau tib lub sijhawm, thaum muaj cov kab noj hniav lossis cov khoom txawv teb chaws hauv cov khoom siv, kev suav ntawm qhov pom tseeb ntawm qhov ntom ntom kuj tseem muaj qhov yuam kev. Qhov ntom ntom ntom ntom tsis muaj cov teeb meem no thiab tuaj yeem cuam tshuam qhov ceev thiab qhov hnyav ntawm cov khoom siv rwb thaiv tsev.
Txoj kev ntsuas
Txoj kev txav chaw: Rau cov khoom siv nrog cov duab tsis tu ncua, qhov ntim tuaj yeem ntsuas ncaj qha; rau cov ntaub ntawv nrog cov duab tsis xwm yeem, lub qhov hws tuaj yeem raug kaw nrog txoj kev siv quav ciab, thiab tom qab ntawd qhov ntim tuaj yeem ntsuas nrog txoj kev xaav.
Pycnometer txoj kev: Rau qee cov ntaub ntawv, xws li cov ntaub ntawv carbon, txoj kev pycnometer tuaj yeem siv tau, nrog toluene lossis n-butanol raws li cov txheej txheem kev ntsuas, lossis cov pa nruab nrab ntawm cov pa tawm tuaj yeem siv los sau cov micropores nrog helium kom txog thaum nws yuav luag tsis muaj adsorbed.
Cov chaw thov
Pom meej ntom ntom muaj ntau yam kev siv hauv cov ntaub ntawv tshawb fawb. Piv txwv li, nyob rau hauv cov khoom siv hluav taws xob hloov tau yooj yim thiab cov khoom siv rwb thaiv tsev, lub hom phiaj tseem ceeb ntawm qhov kev ntsuam xyuas pom tseeb yog los ntsuas nws qhov kev ua tau zoo thiab ua kom ntseeg tau tias nws cov thermal rwb thaiv tsev thiab cov khoom siv kho tshuab ua tau raws li cov qauv. Tsis tas li ntawd, pom meej qhov ntom kuj yog siv los ntsuas lub cev lub cev ntawm cov khoom siv thiab kev ua haujlwm ntawm cov ntaub ntawv hauv kev siv engineering.
Yog tias qhov ntom ntom thiab cov roj hmab thiab cov khoom siv yas ntxiv thiab cov thermal conductivy yuav nce ntxiv, tab sis cov thermal rwb thaiv tsev ua tau zoo zuj zus. Kingflex pom qhov zoo tshaj plaws tag nrho cov ntsiab lus nyob rau hauv kev sib nrig sib kev sib raug zoo ntawm cov thermal conductivity qis dua, qhov siab dua cov nqi xauj tsev, qhov pom tseeb tshaj qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom.
Post lub sij hawm: Jan-18-2025
