Nws tau tshaj tawm tias lub tsev qauv silicone nplaum feem ntau yog siv nyob rau hauv qhov kub ntawm 5 ~ 40 ℃. Thaum qhov kub ntawm lub substrate yog siab dhau (siab tshaj 50 ℃), kev tsim kho tsis tuaj yeem nqa tawm. Lub sijhawm no, kev tsim kho yuav ua rau cov tshuaj tiv thaiv ntawm lub tsev sealant sai dhau, thiab cov khoom tsim tawm me me tsis muaj sij hawm los tawm ntawm cov colloid nto, thiab sib sau ua ke hauv cov colloid tsim npuas, yog li rhuav tshem. qhov tsos ntawm cov kua nplaum sib txuas. Yog tias qhov kub thiab txias qis dhau lawm, kev kho ceev ntawm lub tsev sealant yuav qeeb, thiab cov txheej txheem kho yuav ua rau ntev heev. Thaum lub sijhawm txheej txheem no, cov khoom siv yuav nthuav tawm lossis cog lus vim qhov sib txawv ntawm qhov kub thiab txias, thiab extrusion ntawm sealant tuaj yeem cuam tshuam qhov tsos.
Thaum qhov kub thiab txias qis dua 4 ℃, qhov saum npoo ntawm lub substrate yog ib qho yooj yim rau condense, khov thiab Frost, uas coj zoo zais kev phom sij rau kev sib txuas. Txawm li cas los xij, yog tias koj saib xyuas cov dej lwg, icing, Frost thiab paub qee cov ntsiab lus, lub tsev tsim cov nplaum kuj tuaj yeem siv rau kev tsim kho gluing.
Kev ntxuav ntawm cov khoom nto yog qhov tseem ceeb rau kev sib khi thiab kev sib txuas. Ua ntej kev sib txuas, lub substrate yuav tsum tau ntxuav nrog ib qho hnyav. Txawm li cas los xij, volatilization ntawm kev tu thiab qib tus neeg sawv cev yuav tshem tawm cov dej ntau, uas yuav ua rau qhov kub thiab txias ntawm lub substrate qis dua qhov kub ntawm qhov kub ntawm lub nplhaib qhuav. Nyob rau hauv ib qho chaw uas muaj qhov kub thiab txias qis, nws yog ib qho yooj yim los hloov cov dej nyob ib puag ncig mus rau lub substrate ib los ntawm ib qho nyuaj rau qee cov neeg ua haujlwm kom pom qhov saum npoo ntawm cov khoom. Raws li qhov xwm txheej ib txwm muaj, nws yog ib qho yooj yim uas yuav ua rau kev sib txuas tsis ua haujlwm thiab kev sib cais ntawm sealant thiab substrate. Txoj hauv kev kom tsis txhob muaj qhov xwm txheej zoo sib xws yog ntxuav lub substrate nrog daim ntaub qhuav hauv lub sijhawm tom qab ntxuav lub substrate nrog cov kuab tshuaj. Cov dej condensed kuj tseem yuav qhuav los ntawm cov ntaub qhwv, thiab nws yog qhov zoo dua los siv cov kua nplaum rau lub sijhawm.
Thaum lub thermal expansion thiab txias contraction txav ntawm cov khoom vim qhov kub thiab txias, nws tsis haum rau kev tsim kho. Thaum tsim cov qauv silicone sealant txav mus rau hauv ib qho kev taw qhia tom qab kho, nws tuaj yeem ua rau lub sealant nyob twj ywm hauv qhov nro lossis compression, uas tuaj yeem ua rau lub sealant txav mus rau hauv ib qho kev taw qhia tom qab kho.
Post lub sij hawm: May-20-2022