Nyob rau lub caij nplooj zeeg thiab lub caij ntuj no, raws li qhov txheeb ze av noo nyob rau hauv cov huab cua txo thiab qhov kub ntawm qhov sib txawv thaum sawv ntxov thiab yav tsaus ntuj nce, qhov saum npoo ntawm cov nplaum nplaum ntawm cov iav kab hlau rhuav phab ntsa thiab txhuas vaj huam sib luag kab hlau rhuav phab ntsa yuav maj mam ua protruding thiab deformed ntawm ntau qhov chaw tsim kho. . Txawm tias qee lub qhov rooj thiab qhov rais tej yaam num yuav ntsib deformation deformation thiab protrusion ntawm cov nplaum pob qij txha nyob rau tib hnub los yog nyob rau hauv ob peb hnub ntawm sealing. Peb hu nws lub phenomenon ntawm sealant bulging.
1. Dab tsi yog sealant bulging?
Cov txheej txheem kho ntawm ib qho kev tsim kho weatherproof silicone sealant cia siab rau reacting nrog ya raws hauv huab cua. Thaum lub curing ceev ntawm lub sealant qeeb, lub sij hawm yuav tsum tau kom txaus deg curing qhov tob yuav ntev dua. Thaum lub saum npoo ntawm lub sealant tseem tsis tau khov rau qhov tob txaus, yog tias qhov dav ntawm cov nplaum nplaum hloov pauv loj heev (feem ntau yog vim lub thermal expansion thiab contraction ntawm lub vaj huam sib luag), qhov saum npoo ntawm cov nplaum nplaum yuav cuam tshuam thiab tsis sib xws. Qee lub sij hawm nws yog ib qho bulge nyob rau hauv nruab nrab ntawm tag nrho cov nplaum seam, qee zaum nws yog ib tug nruam bulge, thiab tej zaum nws yog ib tug twisted deformation. Tom qab qhov kev kho zaum kawg, cov ntaub nplaum tsis sib xws no yog tag nrho cov khoom sab hauv (tsis yog hollow npuas), sib sau ua ke hu ua "bulging".
Lub bulging ntawm nplaum seam ntawm aluminium curtain phab ntsa
Lub bulging ntawm nplaum seam ntawm iav kab hlau rhuav phab ntsa
Lub bulging ntawm nplaum seam ntawm qhov rooj thiab qhov rais kev tsim kho
2. Bulging tshwm sim li cas?
Lub hauv paus yog vim li cas rau qhov tshwm sim ntawm "bulging" yog tias cov nplaum ua rau muaj kev hloov pauv loj thiab deformation thaum lub sijhawm kho, uas yog qhov tshwm sim ntawm cov txiaj ntsig zoo ntawm cov khoom xws li kev kho 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 kev tsim kho kom zoo. Yuav kom daws tau qhov teeb meem ntawm bulging nyob rau hauv nplaum seams, nws yog tsim nyog los tshem tawm cov unfavorable yam uas ua rau bulging. Rau ib qhov project, feem ntau nyuaj rau manually tswj qhov kub thiab av noo ib puag ncig, thiab cov khoom vaj huam sib luag thiab qhov loj me, nrog rau kev tsim cov nplaum sib koom ua ke, kuj tau txiav txim siab. Yog li ntawd, kev tswj tau tsuas yog ua tiav los ntawm hom sealant (adhesive displacement peev thiab curing ceev) thiab ib puag ncig kub hloov pauv.
A. Lub peev xwm txav ntawm sealant:
Rau cov phiaj xwm kab hlau rhuav tshwj xeeb, vim yog qhov tseem ceeb ntawm cov phaj loj, cov khoom siv vaj huam sib luag nthuav dav coefficient, thiab kev hloov pauv txhua xyoo ntawm cov kab hlau rhuav phab ntsa, qhov tsawg kawg nkaus lub peev xwm ntawm lub sealant tuaj yeem xam raws li qhov sib koom ua ke dav. Thaum qhov sib koom ua ke nqaim, lub sealant uas muaj peev xwm txav tau siab dua yuav tsum tau xaiv kom ua tau raws li qhov yuav tsum tau ua ntawm kev sib koom ua ke deformation.
B. Curing ceev ntawm sealant:
Tam sim no, cov sealant siv rau kev tsim kho pob qij txha hauv Suav teb feem ntau nruab nrab silicone nplaum, uas tuaj yeem muab faib ua oxime curing type thiab alkoxy curing type raws li hom curing. Lub curing ceev ntawm oxime silicone nplaum yog sai dua li ntawm alkoxy silicone nplaum. Nyob rau hauv kev tsim kho ib puag ncig uas tsis tshua muaj kub (4-10 ℃), qhov kub thiab txias sib txawv (≥ 15 ℃), thiab tsis tshua muaj txheeb ze av noo (<50%), kev siv oxime silicone nplaum tuaj yeem daws tau feem ntau ntawm cov teeb meem "bulging". Qhov ceev ceev ntawm cov sealant, nws muaj peev xwm tiv taus kev sib koom ua ke deformation thaum lub sij hawm kho; Qhov qeeb qeeb ntawm qhov curing ceev thiab ntau dua qhov txav thiab deformation ntawm qhov sib koom ua ke, qhov yooj yim dua nws yog rau cov nplaum sib koom ua ke.
C. Kub thiab av noo ntawm qhov chaw tsim kho ib puag ncig:
Ib qho kev tsim kho weatherproof silicone sealant tsuas yog kho tau los ntawm kev ua haujlwm nrog cov dej noo hauv huab cua, yog li qhov kub thiab av noo ntawm qhov chaw tsim kho muaj qee yam cuam tshuam rau nws txoj kev kho ceev. Feem ntau hais lus, kub thiab av noo ntau dua ua rau cov tshuaj tiv thaiv sai dua thiab kho ceev; Tsis tshua muaj kub thiab av noo ua rau qeeb qeeb kho cov tshuaj tiv thaiv ceev, ua rau nws yooj yim rau cov nplaum seam kom bulge. Cov kev pom zoo rau kev tsim kho yog: ambient kub ntawm 15 ℃ thiab 40 ℃, txheeb ze av noo> 50% RH, thiab kua nplaum tsis tuaj yeem siv thaum lub caij los nag lossis daus. Raws li kev paub dhau los, thaum huab cua txheeb ze ntawm huab cua qis (cov av noo nyob ib puag ncig 30% RH ntev), lossis muaj qhov sib txawv ntawm qhov kub thiab txias thaum sawv ntxov thiab yav tsaus ntuj, qhov ntsuas kub thaum nruab hnub yuav nyob ib puag ncig 20 ℃ (yog tias huab cua yog tshav ntuj, qhov kub ntawm aluminium panels raug tshav ntuj tuaj yeem ncav cuag 60-70 ℃), tab sis qhov kub thiab txias thaum hmo ntuj tsuas yog ob peb degrees Celsius, yog li bulging ntawm cov ntaub thaiv phab ntsa nplaum pob qij txha. muaj ntau dua. Tshwj xeeb tshaj yog rau aluminium curtain phab ntsa nrog cov khoom siab linear expansion coefficients thiab tseem ceeb kub deformation.
D. Vaj huam sib luag khoom:
Aluminium phaj yog cov khoom vaj huam sib luag uas muaj ntau dua coefficient ntawm thermal expansion, thiab nws cov linear expansion coefficient yog 2-3 npaug ntawm iav. Yog li ntawd, txhuas daim hlau ntawm tib qhov loj muaj ntau dua thermal expansion thiab contraction deformation dua iav, thiab muaj ntau dua rau cov thermal txav loj thiab bulging vim qhov kev hloov ntawm qhov kub thiab txias ntawm nruab hnub thiab hmo ntuj. Qhov loj dua qhov loj ntawm aluminium phaj, qhov ntau dua qhov deformation tshwm sim los ntawm qhov kub thiab txias hloov pauv. Qhov no kuj yog vim li cas tib lub sealant yuav muaj bulging thaum siv rau ntawm qee qhov chaw tsim kho, thaum nyob 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 ntawm cov ntaub thaiv phab ntsa panels ntawm ob qhov chaw tsim kho.
3. Yuav ua li cas tiv thaiv sealant los ntawm bulging?
A. Xaiv lub sealant nrog kev kho ceev ceev. Lub curing ceev yog tsuas yog txiav txim siab los ntawm cov qauv cov yam ntxwv ntawm lub sealant nws tus kheej, ntxiv rau ib puag ncig yam. Nws raug nquahu kom siv peb lub tuam txhab "lub caij ntuj no kom qhuav sai" cov khoom los yog kho qhov ceev ceev sib cais rau ib puag ncig kev siv tshwj xeeb kom txo tau qhov tshwm sim ntawm bulging.
B. Kev xaiv lub sij hawm: Yog hais tias tus txheeb ze deformation (tsis muaj deformation / qhov dav dav) ntawm qhov sib koom ua ke loj heev vim tsis tshua muaj av noo, qhov kub thiab txias sib txawv, qhov sib koom ua ke, thiab lwm yam, thiab tsis muaj teeb meem dab tsi sealant siv, nws tseem bulges, dab tsi. yuav tsum ua?
1) Kev tsim kho yuav tsum tau ua kom sai li sai tau rau hnub huab cua, vim qhov kub sib txawv nruab nrab nruab hnub thiab hmo ntuj me me thiab deformation ntawm cov nplaum sib koom me me, ua rau nws tsis tshua muaj bulging.
2) Siv cov kev ntsuas shading tsim nyog, xws li siv cov plua plav nets los npog scaffolding, kom cov panels tsis ncaj qha mus rau tshav ntuj, txo qhov kub ntawm cov panels, thiab txo qhov sib koom deformation los ntawm qhov kub thiab txias sib txawv.
3) Xaiv lub sijhawm tsim nyog los thov sealant.
C. Kev siv cov khoom siv rov qab perforated pab txhawb cov huab cua ncig thiab ua kom nrawm nrawm ntawm lub sealant. (Qee lub sij hawm, vim hais tias tus pas nrig ua npuas ncauj yog dav heev, lub pas nrig ua npuas yog nias rau hauv thiab deformed thaum lub sij hawm tsim kho, uas yuav ua rau bulge).
D. Siv ib txheej thib ob ntawm cov nplaum rau qhov sib koom ua ke. Ua ntej, siv lub concave adhesive sib koom ua ke, tos kom nws solidify thiab ua elastic rau 2-3 hnub, ces thov ib txheej ntawm sealant rau nws nto. Txoj kev no tuaj yeem ua kom lub ntsej muag du thiab zoo nkauj ntawm cov nplaum nplaum sib koom ua ke.
Hauv cov ntsiab lus, qhov tshwm sim ntawm "bulging" tom qab kev tsim kho sealant tsis yog qhov teeb meem zoo ntawm cov sealant, tab sis ua ke ntawm ntau yam tsis zoo. Kev xaiv kom raug ntawm sealant thiab kev tiv thaiv kev tsim kho tau zoo tuaj yeem txo qhov tshwm sim ntawm "bulging" tshwm sim.
[1] 欧利雅. (2023).小欧老师讲解密封胶“起鼓”原因及对应措施.
Nqe Lus Nug: Qee cov duab los ntawm Is Taws Nem.
Post lub sij hawm: Jan-31-2024
