Dab tsi yog qhov kev sib raug zoo ntawm cov dej noo ntawm cov ntoo thiab cov duab thiab qhov loj ntawm nws cov khoom
Tus nqi ntawm cov dej hauv cov ntoo cuam tshuam rau nws lub zog, rigidity, hardness, corrosion resistance, mechanical processing performance, combustion value, thermal conductivity, and conductivity in a certain range.
Thaum cov ntoo ntub tau muab tso rau hauv qhov chaw qhuav, vim qhov tseeb tias qhov siab ntawm ib nrab ntawm cov dej vapor hauv cov ntoo yog ntau dua li qhov siab ntawm cov pa hauv huab cua, cov dej yuav tawm ntawm sab hauv ntawm cov ntoo mus rau qhov chaw, thiab thawj yam uas yuav evaporate yog dej dawb. Thaum cov dej dawb hauv cov ntoo evaporates tag nrho thiab cov dej absorbed tseem nyob rau hauv ib tug saturated lub xeev, cov dej noo nyob rau hauv lub xeev ntawm cov ntoo hu ua fiber ntau saturation point, uas yog lub ntsiab lus ntawm kev hloov nyob rau hauv cov khoom ntoo. Thaum cov dej noo ntawm cov ntoo hloov siab tshaj qhov taw tes ntawm cov fiber ntau, qhov kev hloov ntawm cov dej noo tsuas yog cuam tshuam rau qhov nce lossis txo cov dej dawb, thiab qhov nce lossis txo cov dej dawb muaj me ntsis cuam tshuam rau cov khoom ntawm ntoo, tsuas yog cuam tshuam nws qhov hnyav, tus nqi hluav taws xob, thermal conductivity, thiab conductivity. Ntawm qhov tsis sib xws, thaum cov dej noo ntawm cov ntoo hloov hauv qab ntawm cov fiber ntau saturation point, tsis muaj dej dawb hauv cov ntoo, thiab qhov kev hloov ntawm cov dej absorbed muaj feem cuam tshuam rau cov khoom ntawm cov ntoo. Piv txwv li, cov khoom siv kho tshuab, qhuav shrinkage, ya raws nthuav dav, thermal conductivity, thiab conductivity ntawm ntoo hloov nrog nce los yog txo ntawm absorbed dej. Nws tuaj yeem hais tias cov dej nqus dej hauv cov ntoo yog qhov tseem ceeb cuam tshuam rau cov khoom ntawm cov ntoo.
Tsis tas li ntawd, thaum muaj qhov chaw tsim nyog xws li huab cua, khoom noj khoom haus, kub, thiab av noo, cov spores ntawm ntoo rot fungi tuaj yeem kis tau ntoo thiab ua rau muaj kev phom sij rau nws. Qhov zoo tshaj plaws kub rau kev loj hlob ntawm feem ntau ntoo rot fungi yog 25-30 degree, nrog ib tug noo noo ntsiab lus ntawm 35-50 feem pua. Thaum cov ntoo noo noo cov ntsiab lus txo mus rau 2 feem pua, cov kev ua ntawm ntoo rot fungi yog inhibited. Yog li ntawd, kev ziab kuj yog ib qho kev ntsuas zoo los tiv thaiv cov ntoo tawg thiab lwj.
Nyob rau hauv peb lub neej niaj hnub, qhov peb xav paub tob yog qhov qhuav shrinkage thiab ntub nthuav dav cov yam ntxwv ntawm ntoo, uas yog ib qho tseem ceeb ntawm cov ntoo. Tom qab cov ntoo txiav tshiab tau saws rau hauv cov ntoo square, lawv yuav pib tawm dej thaum muab tso rau hauv qhov chaw qhuav heev. Ua ntej, cov dej dawb hauv cov ntoo pib khiav, thiab qhov loj ntawm cov ntoo tsis hloov. Thaum cov dej dawb hauv cov ntoo evaporates tag nrho, cov dej absorbed hauv cov phab ntsa ntawm cov ntoo yog tawm ntawm cov ntoo, thiab qhov loj ntawm cov ntoo txo. Qhov no yog vim qhov txo qis ntawm qhov sib txawv ntawm microfibrils thiab loj filaments nyob rau hauv lub cell phab ntsa vim dej nqus thiab excretion, uas ua rau thinning ntawm lub cell phab ntsa thiab qhuav shrinkage ntawm ntoo. Ntawm qhov tsis sib xws, thaum lub sij hawm cov txheej txheem ntawm ntoo maj mam ntub los ntawm tag nrho qhuav lub xeev mus rau fiber ntau saturation point, qhov tshwm sim ntawm ntoo o tuaj yeem pom.
