Thaum lub caij nplooj zeeg thiab lub caij ntuj no, thaum cov av noo hauv huab cua txo qis thiab qhov sib txawv ntawm qhov kub thiab txias ntawm thaum sawv ntxov thiab yav tsaus ntuj nce ntxiv, qhov chaw ntawm cov pob qij txha ntawm cov iav ntaub thaiv phab ntsa thiab cov vaj huam sib luag txhuas ntaub thaiv phab ntsa yuav maj mam tawm thiab deformed ntawm ntau qhov chaw tsim kho. Txawm tias qee qhov qhov rooj thiab qhov rai project kuj yuav muaj kev deformation ntawm qhov chaw thiab tawm ntawm cov pob qij txha rau tib hnub lossis hauv ob peb hnub ntawm kev kaw. Peb hu nws ua qhov tshwm sim ntawm sealant bulging.
1. Dab tsi yog qhov ua rau cov sealant o?
Cov txheej txheem kho ntawm cov khoom siv silicone sealant uas tiv taus huab cua ib feem yog nyob ntawm kev cuam tshuam nrog cov dej noo hauv huab cua. Thaum qhov ceev kho ntawm cov sealant qeeb, lub sijhawm xav tau rau qhov tob kho ntawm qhov chaw yuav ntev dua. Thaum qhov chaw ntawm cov sealant tseem tsis tau khov mus rau qhov tob txaus, yog tias qhov dav ntawm cov kab sib txuas hloov pauv ntau (feem ntau yog vim qhov thermal nthuav dav thiab kev sib cog lus ntawm lub vaj huam sib luag), qhov chaw ntawm cov kab sib txuas yuav raug cuam tshuam thiab tsis sib xws. Qee zaum nws yog qhov bulge nyob nruab nrab ntawm tag nrho cov kab sib txuas, qee zaum nws yog qhov bulge txuas ntxiv, thiab qee zaum nws yog qhov deformation twisted. Tom qab kho zaum kawg, cov kab sib txuas ntawm qhov chaw tsis sib xws no yog txhua yam khoom sab hauv (tsis yog cov npuas khoob), hu ua "bulging".
Qhov bulging ntawm cov nplaum seam ntawm aluminium curtain phab ntsa
Qhov bulging ntawm cov nplaum seam ntawm iav ntaub thaiv phab ntsa
Qhov sib txuas ntawm cov kab sib txuas ntawm qhov rooj thiab qhov rai
2. Kev mob plab tshwm sim li cas?
Qhov laj thawj tseem ceeb rau qhov tshwm sim ntawm "bulging" yog tias cov nplaum raug hloov pauv thiab deformation thaum lub sijhawm kho, uas yog qhov tshwm sim ntawm kev cuam tshuam ntawm cov yam xws li qhov ceev ntawm cov sealant, qhov loj ntawm cov nplaum sib koom ua ke, cov khoom siv thiab qhov loj ntawm lub vaj huam sib luag, qhov chaw tsim kho, thiab qhov zoo ntawm kev tsim kho. Txhawm rau daws qhov teeb meem ntawm kev bulging hauv cov seams nplaum, nws yog qhov tsim nyog los tshem tawm cov yam tsis zoo uas ua rau bulging. Rau qee qhov project, nws feem ntau nyuaj rau manually tswj qhov kub thiab av noo ib puag ncig, thiab cov khoom siv vaj huam sib luag thiab qhov loj me, nrog rau kev tsim ntawm cov nplaum sib koom ua ke, kuj tau txiav txim siab. Yog li ntawd, kev tswj hwm tsuas yog ua tiav los ntawm hom sealant (lub peev xwm hloov pauv nplaum thiab qhov ceev kho) thiab qhov sib txawv ntawm qhov kub thiab txias ib puag ncig.
A. Lub peev xwm txav mus los ntawm cov sealant:
Rau ib qho project phab ntsa ntaub thaiv qhov rai tshwj xeeb, vim yog qhov nqi ruaj khov ntawm qhov loj ntawm phaj, cov khoom siv vaj huam sib luag linear expansion coefficient, thiab kev hloov pauv kub txhua xyoo ntawm phab ntsa ntaub thaiv qhov rai, qhov muaj peev xwm txav mus los tsawg kawg nkaus ntawm cov sealant tuaj yeem suav raws li qhov dav ntawm qhov sib koom ua ke. Thaum qhov sib koom ua ke nqaim, cov sealant uas muaj peev xwm txav mus los siab dua yuav tsum tau xaiv kom ua tau raws li qhov yuav tsum tau ua ntawm kev hloov pauv ntawm qhov sib koom ua ke.
B. Kev ceev ntawm cov sealant:
Tam sim no, cov sealant siv rau kev tsim kho pob qij txha hauv Suav teb feem ntau yog cov nplaum silicone nruab nrab, uas tuaj yeem muab faib ua hom oxime curing thiab hom alkoxy curing raws li qeb curing. Qhov ceev curing ntawm oxime silicone nplaum yog sai dua li ntawm alkoxy silicone nplaum. Hauv cov chaw tsim kho nrog qhov kub qis (4-10 ℃), qhov sib txawv ntawm qhov kub thiab txias loj (≥ 15 ℃), thiab qhov av noo qis (<50%), kev siv oxime silicone nplaum tuaj yeem daws tau feem ntau ntawm cov teeb meem "bulging". Qhov ceev curing ntawm cov sealant sai dua, nws lub peev xwm muaj zog dua los tiv taus qhov sib koom ua ke deformation thaum lub sijhawm kho; Qhov qeeb qeeb qhov ceev curing thiab qhov loj dua qhov txav thiab deformation ntawm qhov sib koom ua ke, nws yooj yim dua rau cov nplaum sib koom ua ke kom bulging.
C. Kub thiab av noo ntawm qhov chaw tsim kho:
Cov tshuaj nplaum silicone uas tiv taus huab cua uas ua los ntawm ib feem xwb tsuas yog kho tau los ntawm kev cuam tshuam nrog cov dej noo hauv huab cua, yog li qhov kub thiab txias ntawm qhov chaw tsim kho muaj qee yam cuam tshuam rau nws qhov ceev ntawm kev kho. Feem ntau, qhov kub thiab txias siab dua ua rau kev teb sai dua thiab kev kho sai dua; qhov kub thiab txias qis ua rau kev kho qeeb dua, ua rau nws yooj yim rau cov kab sib txuas kom o. Cov xwm txheej zoo tshaj plaws hauv kev tsim kho yog: qhov kub ib puag ncig ntawm 15 ℃ thiab 40 ℃, qhov dej noo ntau dua 50% RH, thiab cov kua nplaum tsis tuaj yeem siv thaum muaj nag lossis daus. Raws li kev paub dhau los, thaum qhov dej noo ntawm huab cua qis (qhov dej noo nyob ib puag ncig 30% RH ntev), lossis muaj qhov sib txawv ntawm qhov kub thiab txias ntawm sawv ntxov thiab yav tsaus ntuj, qhov kub thaum nruab hnub yuav nyob ib puag ncig 20 ℃ (yog tias huab cua hnub ci, qhov kub ntawm cov vaj huam sib luag txhuas raug rau lub hnub tuaj yeem ncav cuag 60-70 ℃), tab sis qhov kub thaum hmo ntuj tsuas yog ob peb degrees Celsius, yog li qhov o ntawm cov pob qij txha nplaum ntawm phab ntsa ntaub thaiv yog qhov tshwm sim ntau dua. Tshwj xeeb tshaj yog rau cov phab ntsa ntaub thaiv txhuas uas muaj cov khoom siv nthuav dav ntau thiab qhov kub hloov pauv tseem ceeb.
D. Cov khoom siv vaj huam sib luag:
Phaj txhuas yog ib yam khoom siv vaj huam sib luag uas muaj cov coefficient ntawm thermal expansion siab dua, thiab nws cov coefficient linear expansion yog 2-3 npaug ntawm iav. Yog li ntawd, phaj txhuas ntawm tib qhov loj me muaj thermal expansion thiab contraction deformation ntau dua li iav, thiab muaj feem ntau rau kev txav mus los thermal loj thiab bulging vim muaj kev hloov pauv ntawm qhov kub thiab txias ntawm hnub thiab hmo ntuj. Qhov loj dua ntawm phaj txhuas, qhov deformation ntau dua los ntawm kev hloov pauv ntawm qhov kub thiab txias. Qhov no kuj yog vim li cas tib lub sealant yuav ntsib bulging thaum siv rau qee qhov chaw tsim kho, thaum nyob rau hauv qee qhov chaw tsim kho, bulging tsis tshwm sim. Ib qho laj thawj rau qhov no yuav yog qhov sib txawv ntawm qhov loj me ntawm cov ntaub thaiv phab ntsa ntawm ob qhov chaw tsim kho.
3. Yuav ua li cas thiaj tiv thaiv tau cov sealant kom tsis txhob o?
A. Xaiv cov sealant uas muaj qhov ceev ceev. Qhov ceev ntawm kev kho yog txiav txim siab los ntawm cov yam ntxwv ntawm cov mis ntawm cov sealant nws tus kheej, ntxiv rau cov yam ntxwv ib puag ncig. Nws raug pom zoo kom siv peb lub tuam txhab cov khoom "lub caij ntuj no kom qhuav sai" lossis kho qhov ceev ntawm kev kho cais rau ib puag ncig siv tshwj xeeb kom txo qhov feem pua ntawm kev o.
B. Xaiv lub sijhawm tsim kho: Yog tias qhov kev hloov pauv ntawm qhov sib txuas (qhov kev hloov pauv tag nrho / qhov dav ntawm qhov sib koom ua ke) loj dhau vim yog qhov av noo tsawg, qhov kub sib txawv, qhov loj ntawm qhov sib koom ua ke, thiab lwm yam, thiab txawm tias siv cov sealant twg los xij, nws tseem bulged, yuav tsum ua li cas?
1) Kev tsim kho yuav tsum tau ua sai li sai tau rau hnub uas muaj huab, vim tias qhov sib txawv ntawm qhov kub thiab txias ntawm nruab hnub thiab hmo ntuj yog me me thiab qhov deformation ntawm cov nplaum sib koom ua ke yog me me, ua rau nws tsis tshua muaj kev loj hlob.
2) Siv cov kev ntsuas ntxoov ntxoo kom tsim nyog, xws li siv cov ntaub thaiv plua plav los npog cov scaffolding, kom cov vaj huam sib luag tsis raug tshav ntuj ncaj qha, txo qhov kub ntawm cov vaj huam sib luag, thiab txo qhov sib koom ua ke los ntawm qhov sib txawv ntawm qhov kub.
3) Xaiv lub sijhawm tsim nyog los siv cov sealant.
C. Kev siv cov khoom siv tom qab uas muaj qhov perforated ua rau huab cua ncig tau yooj yim thiab ua kom cov sealant kho sai dua. (Qee zaum, vim tias tus pas ua npuas ncauj dav dhau, tus pas ua npuas ncauj raug nias rau hauv thiab ua rau puas thaum lub sijhawm tsim kho, uas kuj yuav ua rau nws o).
D. Siv ib txheej nplaum thib ob rau ntawm qhov sib koom ua ke. Ua ntej, siv ib txheej nplaum uas zoo li lub qhov sib koom ua ke, tos kom nws khov thiab ywj rau 2-3 hnub, tom qab ntawd siv ib txheej sealant rau ntawm nws qhov chaw. Txoj kev no tuaj yeem ua kom qhov sib koom ua ke ntawm qhov chaw nplaum du thiab zoo nkauj.
Hauv kev xaus lus, qhov tshwm sim ntawm "bulging" tom qab kev tsim cov sealant tsis yog qhov teeb meem zoo ntawm cov sealant, tab sis kev sib xyaw ua ke ntawm ntau yam tsis zoo. Kev xaiv cov sealant kom raug thiab cov kev tiv thaiv kev tsim kho zoo tuaj yeem txo qhov tshwm sim ntawm "bulging".
[1] 欧利雅. (2023).小欧老师讲解密封胶“起鼓”原因及对应措施.
Lus Cim: qee cov duab los ntawm Is Taws Nem.
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