1. Kub: Kub muaj qhov cuam tshuam ncaj qha rau cov thermal conductivity ntawm ntau yam khoom siv thermal rwb thaiv tsev.Raws li qhov kub nce, thermal conductivity ntawm cov khoom nce.

2. Cov ntsiab lus noo noo: Tag nrho cov khoom siv thermal rwb thaiv tsev muaj cov qauv ntxeem tau thiab yooj yim nqus dej noo.Thaum cov dej noo ntau dua 5% ~ 10%, cov dej noo nyob hauv ib feem ntawm lub qhov pore qhov chaw pib nrog huab cua tom qab cov khoom nqus dej noo, ua rau nws cov thermal conductivity nce ntau.

3. Bulk density: Bulk density is a direct reflection of the porosity of the material.Txij li thaum lub thermal conductivity ntawm cov roj theem feem ntau yog tsawg tshaj li ntawm cov khoom theem, cov thermal rwb thaiv tsev cov ntaub ntawv muaj ib tug loj porosity, uas yog, ib tug me me bulk ntom.Nyob rau hauv ib txwm muaj xwm txheej, nce qhov pores lossis txo qhov ntom ntom yuav ua rau txo qis hauv thermal conductivity.

4. Particle loj ntawm cov khoom xoob: Nyob rau hauv chav tsev kub, thermal conductivity ntawm cov khoom xoob yuav txo qis raws li qhov me me ntawm cov khoom txo.Thaum cov particle loj loj, qhov loj ntawm qhov sib txawv ntawm cov khoom nce, thiab thermal conductivity ntawm huab cua nyob nruab nrab yuav inevitably nce.Qhov me me particle loj, qhov me me qhov kub coefficient ntawm thermal conductivity.

5. Thaum tshav kub kub kev taw qhia: Cov kev sib raug zoo ntawm thermal conductivity thiab kub khiav kev taw qhia tsuas yog muaj nyob rau hauv anisotropic cov ntaub ntawv, uas yog, cov ntaub ntawv uas sib txawv lug nyob rau hauv ntau yam lus qhia.Thaum lub tshav kub hloov kev taw qhia yog perpendicular mus rau lub fiber kev taw qhia, lub thermal rwb thaiv tsev kev ua tau zoo yog zoo dua li thaum tshav kub kub kev taw qhia yog parallel mus rau lub fiber kev taw qhia;Ib yam li ntawd, cov thermal rwb thaiv tsev kev ua tau zoo ntawm cov khoom siv nrog ntau qhov chaw kaw qhov pores kuj zoo dua li qhov loj qhib pores.Cov ntaub ntawv stomatal tau muab faib ua ob hom: cov khoom siv nrog npuas thiab cov khoom sib txuas me ntsis.Los ntawm qhov kev xav ntawm kev npaj ntawm cov ntaub ntawv fibrous, muaj ob qhov xwm txheej: cov kev taw qhia thiab cov kev taw qhia ntawm cov cua sov yog perpendicular thiab cov kev taw qhia fiber ntau thiab cov kev taw qhia ntawm cov cua sov yog tib yam.Feem ntau, cov txheej txheem fiber ntau ntawm cov khoom siv rwb thaiv tsev fiber ntau yog qhov kawg lossis ze rau tom kawg.Tib qhov ntom ntom ntom ntom yog ib qho, thiab nws cov thermal conduction Cov coefficient tsawg dua li cov thermal conductivity ntawm lwm cov ntaub ntawv ntawm cov ntaub ntawv ntxeem tau.

6. Kev cuam tshuam ntawm cov roj filling: Hauv cov khoom siv thermal rwb thaiv tsev, feem ntau ntawm cov cua sov yog ua los ntawm cov pa roj hauv qhov pores.Yog li ntawd, cov thermal conductivity ntawm cov khoom siv insulating feem ntau txiav txim siab los ntawm hom filling gas.Hauv kev tsim hluav taws xob qis, yog tias helium lossis hydrogen tau sau, nws tuaj yeem suav tias yog thawj qhov kev kwv yees kwv yees.Nws raug suav hais tias thermal conductivity ntawm cov khoom siv insulating yog sib npaug rau cov thermal conductivity ntawm cov roj cua, vim tias cov thermal conductivity ntawm helium lossis hydrogen kuj loj heev.

7. Lub peev xwm tshwj xeeb kub: Lub peev xwm tshwj xeeb ntawm cov khoom siv insulating muaj feem xyuam rau lub peev xwm txias (los yog cua sov) uas yuav tsum tau ua kom txias thiab cua sov ntawm cov qauv insulating.Ntawm qhov kub thiab txias, qhov tshwj xeeb kub muaj peev xwm ntawm tag nrho cov khib nyiab sib txawv heev.Nyob rau hauv ib txwm kub thiab siab, huab cua zoo tsis tshaj 5% ntawm cov khoom siv rwb thaiv tsev, tab sis raws li qhov kub thiab txias, qhov kev faib ua feem ntawm cov roj yog nce.Yog li ntawd, qhov tseem ceeb no yuav tsum tau xav txog thaum xam cov ntaub ntawv thermal rwb thaiv tsev uas ua haujlwm nyob rau hauv ib txwm muaj siab.

8. Coefficient ntawm linear expansion: Thaum xam cov firmness thiab stability ntawm lub rwb thaiv tsev qauv nyob rau hauv cov txheej txheem ntawm txias (los yog cua sov), nws yog tsim nyog los paub qhov coefficient ntawm linear expansion ntawm cov khoom rwb thaiv tsev.Yog hais tias lub linear expansion coefficient ntawm thermal rwb thaiv tsev cov ntaub ntawv me me, lub thermal rwb thaiv tsev qauv yuav tsis tshua puas vim thermal expansion thiab contraction thaum siv.Cov coefficient ntawm linear expansion ntawm feem ntau thermal rwb thaiv tsev cov ntaub ntawv txo qis heev raws li qhov kub thiab txias txo.