Qhov ntom ntom pom tseeb yog qhov sib piv ntawm qhov hnyav ntawm ib yam khoom rau nws qhov ntim pom tseeb. Qhov ntim pom tseeb yog qhov ntim tiag tiag ntxiv rau qhov ntim qhov kaw. Nws yog qhov sib piv ntawm qhov chaw uas ib yam khoom nyob hauv qab kev ua ntawm lub zog sab nraud rau qhov hnyav ntawm cov khoom, feem ntau qhia hauv kilograms ib cubic meter (kg/m³). Nws tuaj yeem qhia txog qhov porosity, hardness, elasticity thiab lwm yam khoom ntawm cov khoom. Rau cov khoom uas muaj cov duab zoo ib yam, qhov ntim tuaj yeem ntsuas ncaj qha; rau cov khoom uas muaj cov duab tsis zoo, qhov hws tuaj yeem kaw nrog kev sib khi ciab, thiab tom qab ntawd qhov ntim tuaj yeem ntsuas los ntawm kev ntws dej. Qhov ntom ntom pom tseeb feem ntau yog ntsuas hauv lub xeev ntuj ntawm cov khoom, uas yog, lub xeev qhuav khaws cia rau hauv huab cua ntev. Rau cov roj hmab ua npuas ncauj thiab cov khoom siv rwb thaiv tsev yas, qhov sib piv ntawm cov npuas kaw rau roj hmab thiab cov khoom yas sib txawv, thiab muaj qhov ntom ntom nrog qhov thermal conductivity qis tshaj plaws.
Qhov porosity siab tuaj yeem ua rau rwb thaiv tsev zoo; tab sis qhov ceev tsawg dhau tuaj yeem ua rau deformation thiab tawg. Tib lub sijhawm, lub zog compression nce nrog rau qhov nce ntawm qhov ceev, ua kom ntseeg tau tias cov khoom ruaj khov mus sij hawm ntev. Hais txog kev ua kom sov, qhov ceev me dua, qhov ua kom sov qis dua thiab qhov rwb thaiv tsev zoo dua; tab sis yog tias qhov ceev siab dhau, kev hloov pauv cua sov sab hauv nce ntxiv thiab cov nyhuv rwb thaiv tsev txo qis. Yog li ntawd, thaum xaiv cov khoom rwb thaiv tsev, nws yog qhov tsim nyog los xav txog lawv qhov ceev pom tseeb kom ntseeg tau tias ntau yam khoom sib npaug kom tau raws li qhov xav tau ntawm ntau yam kev siv.
Qhov ceev ntawm cov khoom siv yog qhov ceev ntawm cov khoom siv, uas yog, qhov sib piv ntawm qhov chaw uas ib yam khoom nyob rau nws qhov hnyav. Hauv cov ntaub ntawv rwb thaiv tsev, feem ntau nws yog hais txog qhov sib piv ntawm cov pa hauv qhov thiab qhov hnyav tiag tiag ib chav ntim, qhia hauv kilograms ib cubic meter (kg/m³). Ib yam li qhov ceev pom tseeb, qhov ceev ntawm cov khoom siv kuj yog ib qho ntawm cov yam ntxwv tseem ceeb rau kev ntsuam xyuas kev ua tau zoo ntawm cov ntaub ntawv rwb thaiv tsev, uas feem ntau tuaj yeem cuam tshuam qhov hnyav, kev nqus dej, kev rwb thaiv tsev thermal thiab lwm yam ntxwv ntawm cov khoom siv.
Yog li ntawd, txawm hais tias ob qho tib si pom tseeb qhov ceev thiab qhov ceev ntawm cov khoom siv qhia txog qhov ceev thiab porosity ntawm cov ntaub ntawv rwb thaiv tsev thermal, lawv muaj qee qhov sib txawv pom tseeb:
1. Lub ntsiab lus sib txawv
Qhov pom tseeb ntawm cov ntaub ntawv rwb thaiv tsev thermal feem ntau ntsuas cov khoom ntawm cov khoom xws li porosity thiab elasticity, thiab tuaj yeem cuam tshuam qhov sib piv ntawm huab cua thiab qhov hnyav tiag tiag hauv cov khoom.
Qhov ntom ntom ntawm cov khoom siv rwb thaiv tsev yog hais txog qhov ntom ntawm cov khoom siv rwb thaiv tsev nws tus kheej, thiab tsis cuam tshuam rau cov yam ntxwv ntawm cov qauv sab hauv.
2. Cov txheej txheem xam sib txawv
Qhov pom tseeb ntawm cov ntaub ntawv rwb thaiv tsev feem ntau yog xam los ntawm kev ntsuas qhov hnyav thiab qhov ntim ntawm cov qauv, thaum qhov ceev ntawm cov khoom loj yog xam los ntawm kev ntsuas qhov hnyav ntawm cov qauv khoom ntawm qhov paub ntim.
3. Tej zaum yuav muaj qhov yuam kev
Vim tias kev xam qhov pom tseeb ntawm cov khoom siv rwb thaiv tsev yog raws li qhov ntim uas cov qauv compressed nyob, nws tsis tuaj yeem sawv cev rau tag nrho cov qauv ntawm cov khoom siv. Tib lub sijhawm, thaum muaj qhov lossis cov khoom txawv teb chaws sab hauv cov khoom siv, kev xam qhov pom tseeb kuj tseem yuav muaj qhov yuam kev. Qhov ntau thiab tsawg tsis muaj cov teeb meem no thiab tuaj yeem qhia qhov tseeb ntawm qhov ceev thiab qhov hnyav ntawm cov khoom siv rwb thaiv tsev.
Txoj kev ntsuas
Txoj kev hloov chaw: Rau cov ntaub ntawv uas muaj cov duab tsis tu ncua, qhov ntim tuaj yeem ntsuas ncaj qha; rau cov ntaub ntawv uas muaj cov duab tsis tu ncua, cov qhov hws tuaj yeem kaw nrog txoj kev kaw ciab, thiab tom qab ntawd qhov ntim tuaj yeem ntsuas nrog txoj kev hloov chaw.
Txoj kev Pycnometer: Rau qee cov ntaub ntawv, xws li cov ntaub ntawv carbon, txoj kev pycnometer tuaj yeem siv, nrog toluene lossis n-butanol ua tus qauv kev daws teeb meem rau kev ntsuas, lossis txoj kev hloov pauv roj tuaj yeem siv los sau cov micropores nrog helium kom txog thaum nws yuav luag tsis muaj adsorbed lawm.
Cov cheeb tsam thov
Qhov pom tseeb ntawm qhov ceev muaj ntau yam kev siv hauv kev tshawb fawb txog cov ntaub ntawv. Piv txwv li, hauv cov roj hmab ua npuas ncauj thiab cov khoom siv rwb thaiv tsev yas, lub hom phiaj tseem ceeb ntawm kev sim qhov pom tseeb ntawm qhov ceev yog los ntsuas nws qhov kev ua tau zoo ntawm qhov ceev thiab xyuas kom meej tias nws cov khoom rwb thaiv tsev thermal thiab cov khoom siv kho tshuab ua tau raws li cov qauv. Tsis tas li ntawd, qhov pom tseeb ntawm qhov ceev kuj tseem siv los ntsuas cov khoom siv lub cev thiab kev ua tau zoo ntawm cov ntaub ntawv hauv kev siv engineering.
Yog tias qhov ceev nce ntxiv thiab cov roj hmab thiab cov khoom yas nce ntxiv, lub zog ntawm cov khoom siv thiab qhov ntsuas dej noo yuav nce ntxiv, tab sis qhov kev ua tau zoo ntawm cov cua sov yuav nce ntxiv thiab kev ua haujlwm ntawm cov khoom rwb thaiv tsev yuav poob qis. Kingflex pom qhov sib npaug zoo tshaj plaws hauv kev sib raug zoo ntawm qhov kev ua tau zoo ntawm cov cua sov qis dua, qhov ntsuas dej noo siab dua, qhov ceev pom tseeb tshaj plaws thiab lub zog tsim kua muag, uas yog, qhov ceev zoo tshaj plaws.
Lub sijhawm tshaj tawm: Lub Ib Hlis-18-2025
