Ngexesha lasekwindla nasebusika, njengoko umswakama emoyeni uncipha kwaye umahluko wobushushu phakathi kwasekuseni nangokuhlwa uyanda, umphezulu weendawo zokuncamathelisa iindonga zekhethini zeglasi kunye neendonga zekhethini zephaneli ye-aluminiyam uya kuphuma kancinci kancinci kwaye uphazamiseke kwiindawo ezahlukeneyo zokwakha. Kwaneminye imisebenzi yomnyango neefestile inokufumana ukuguquguquka komphezulu kunye nokuphuma kweendawo zokuncamathelisa ngosuku olunye okanye kwiintsuku ezimbalwa zokutywinwa. Siyibiza ngokuba yinto yokuvuvuka kwe-sealant.
1. Yintoni ukudumba kwe-sealant?
Inkqubo yokucola ye-single component construction, i-silicone sealant, ekwaziyo ukumelana nemozulu, ixhomekeke ekuphenduleni kunye nokufuma emoyeni. Xa isantya sokucola se-sealant sicotha, ixesha elifunekayo ukuze kubekho ubunzulu obaneleyo bokucola umphezulu liza kuba lide. Xa umphezulu we-sealant ungakaqini ngokwaneleyo, ukuba ububanzi bomthungo we-adhesive butshintsha kakhulu (ngesiqhelo ngenxa yokwanda kobushushu kunye nokucutheka kwephaneli), umphezulu womthungo we-adhesive uya kuchaphazeleka kwaye ungalingani. Ngamanye amaxesha yi-bulge embindini womthungo we-adhesive, ngamanye amaxesha yi-bulge eqhubekayo, kwaye ngamanye amaxesha yi-deformation ejijekileyo. Emva kokuphela kokulungiswa, ezi ntambo ze-adhesive surface ezingalinganiyo zonke ziqinile ngaphakathi (hayi amaqamza angenanto), zibizwa ngokuba yi-"bulging".
Ukudumba komthungo onamathelayo wodonga lwekhethini le-aluminiyam
Ukudumba komthungo onamathelayo wodonga lwekhethini yeglasi
Ukudumba komthungo onamathelayo wolwakhiwo lomnyango kunye neefestile
2. Kwenzeka njani ukudumba?
Isizathu esiyintloko sento ethi "ukudumba" kukuba i-adhesive idlula ekutshintsheni nasekuguqukeni okukhulu ngexesha lenkqubo yokugumba, okubangelwa yimpembelelo epheleleyo yezinto ezifana nesantya sokugumba kwe-sealant, ubungakanani be-adhesive joint, izinto kunye nobukhulu bepaneli, imeko yokwakha, kunye nomgangatho wokwakha. Ukusombulula ingxaki yokudumba kwi-adhesive seams, kuyimfuneko ukususa izinto ezingathandekiyo ezibangela ukudumba. Kwiprojekthi ethile, kunzima ukulawula ubushushu kunye nokufuma ngesandla, kwaye izinto zepaneli kunye nobukhulu, kunye noyilo lwe-adhesive joint, nazo zichongiwe. Ke ngoko, ulawulo lunokufezekiswa kuphela kuhlobo lwe-adhesive (umthamo wokudumba we-adhesive kunye nesantya sokugumba) kunye notshintsho lomahluko wobushushu bendalo.
A. Amandla okushukuma kwe-sealant:
Kwiprojekthi yodonga lwekhethini ethile, ngenxa yamaxabiso amiselweyo obungakanani bepleyiti, i-coefficient yokwandiswa komgca wezinto zephaneli, kunye notshintsho lobushushu lonyaka lodonga lwekhethini, amandla amancinci okushukuma kwe-sealant angabalwa ngokusekelwe kububanzi bejoyinti elibekiweyo. Xa ijoyinti imxinwa, kufuneka kukhethwe i-sealant enekhono eliphezulu lokushukuma ukuze ihlangabezane neemfuno zokuguqulwa kwejoyinti.
B. Isantya sokucoca se-sealant:
Okwangoku, i-sealant esetyenziselwa ulwakhiwo lwe-joints eTshayina ikakhulu yi-silicone adhesive engathathi cala, enokwahlulwa ibe yi-oxime curing type kunye ne-alkoxy curing type ngokwe-curing type. Isantya sokulungisa se-oxime silicone adhesive sikhawuleza kunese-alkoxy silicone adhesive. Kwiindawo zokwakha ezinamaqondo obushushu aphantsi (4-10 ℃), umahluko omkhulu wobushushu (≥ 15 ℃), kunye nomswakama ophantsi (<50%), ukusetyenziswa kwe-oxime silicone adhesive kunokusombulula uninzi lweengxaki "zokuvuvukala". Okukhona isantya sokulungisa se-sealant sikhawuleza, kokukhona amandla ayo okumelana nokuguquguquka kwamalungu ngexesha lokulungisa; Okukhona isantya sokulungisa sicotha kwaye kokukhona intshukumo kunye nokuguquguquka kwejoint kukhulu, kokukhona kulula ukuba i-adhesive joint idumbe.
C. Ubushushu kunye nokufuma kwendawo yokwakha:
I-silicone sealant yolwakhiwo olungenawo umoya enokumelana nemozulu kuphela xa isabela kumswakama emoyeni, ngoko ke ubushushu kunye nokufuma kwendawo yokwakha kunempembelelo ethile kwisantya sayo sokufuma. Ngokubanzi, ubushushu obuphezulu kunye nokufuma kubangela ukusabela okukhawulezayo kunye nesantya sokufuma; Ubushushu obuphantsi kunye nokufuma kubangela isantya sokufuma esicothayo, okwenza kube lula ukuba umthungo wokuncamathelisa uvuthuluke. Iimeko zokwakha ezicetyiswayo zezi: ubushushu obuphakathi kwe-15 ℃ kunye ne-40 ℃, umswakama ohambelanayo>50% RH, kwaye iglu ayinakusetyenziswa ngexesha lemvula okanye ikhephu. Ngokusekelwe kumava, xa umswakama womoya uphantsi (umswakama ujikeleza malunga ne-30% RH ixesha elide), okanye kukho umahluko omkhulu wobushushu phakathi kwasekuseni nangokuhlwa, ubushushu emini bunokuba malunga ne-20 ℃ (ukuba imozulu inelanga, ubushushu beepaneli ze-aluminium ezivezwe elangeni bunokufikelela kwi-60-70 ℃), kodwa ubushushu ebusuku bungama-degrees Celsius ambalwa kuphela, ngoko ke ukudumba kwamalungu okuncamathelisa eludongeni lwekhethini kuxhaphake kakhulu. Ingakumbi kwiindonga zekhethini ze-aluminium ezinee-coefficients eziphezulu zokwandiswa kwezinto kunye nokuguquguquka kobushushu okuphawulekayo.
D. Izinto zephaneli:
Ipleyiti ye-aluminium yinto eqhelekileyo yephaneli ene-coefficient ephezulu yokwandiswa kobushushu, kwaye i-coefficient yayo yokwandiswa komgca iphindwe ka-2-3 kuneglasi. Ke ngoko, iipleyiti ze-aluminium ezinobukhulu obufanayo zinokukhula okukhulu kobushushu kunye nokuguquguquka kokuqiniswa kuneglasi, kwaye zisengozini enkulu yokuhamba okukhulu kobushushu kunye nokudumba ngenxa yotshintsho kumahluko wobushushu phakathi kwemini nobusuku. Okukhona ubukhulu bepleyiti ye-aluminium bukhulu, kokukhona ukuguquguquka okubangelwa kukutshintsha kobushushu. Yingakho i-sealant efanayo inokufumana ukudumba xa isetyenziswa kwiindawo ezithile zokwakha, ngelixa kwezinye iindawo zokwakha, ukudumba kungenzeki. Esinye isizathu soku kusenokuba ngumahluko kubukhulu beepaneli zodonga zekhethini phakathi kweendawo ezimbini zokwakha.
3. Ungayithintela njani i-sealant ukuba ingadumbi?
A. Khetha isitywini esinesantya sokupholisa esikhawulezayo. Isantya sokupholisa sixhomekeke kakhulu kwiimpawu zefomyula yesitywini ngokwaso, ukongeza kwizinto ezingqongileyo. Kucetyiswa ukuba sisebenzise iimveliso zenkampani yethu "zokomisa ngokukhawuleza ebusika" okanye silungise isantya sokupholisa ngokwahlukeneyo kwindawo ethile yokusetyenziswa ukuze sinciphise amathuba okudumba.
B. Ukukhetha ixesha lokwakha: Ukuba ukuguquguquka okunxulumeneyo (ukuguquguquka okupheleleyo/ububanzi bamalungu) kwelungu kukhulu kakhulu ngenxa yokufuma okuphantsi, umahluko kubushushu, ubungakanani bamalungu, njl.njl., kwaye nokuba kusetyenziswa siphi isitywina, sisavuvukala, kufuneka kwenziwe ntoni?
1) Ulwakhiwo kufuneka lwenziwe ngokukhawuleza kangangoko kwiintsuku ezinamafu, njengoko umahluko wobushushu phakathi kwemini nobusuku umncinci kwaye ukuguquguquka kwekhonkco lokuncamathelisa kuncinci, okwenza kungabi lula ukudumba.
2) Thatha amanyathelo afanelekileyo okugquma, njengokusebenzisa iminatha yothuli ukugquma i-scaffolding, ukuze iiphaneli zingavezwa ngqo elangeni, ukunciphisa ubushushu beephaneli, kunye nokunciphisa ukuguquka kwamalungu okubangelwa kukwahluka kobushushu.
3) Khetha ixesha elifanelekileyo lokufaka isitywini.
C. Ukusetyenziswa kwezinto ezixhasayo ezineembobo kwenza kube lula ukujikeleza komoya kwaye kukhawulezise isantya sokunyangwa kwe-sealant. (Ngamanye amaxesha, ngenxa yokuba intonga ye-foam ibanzi kakhulu, intonga ye-foam iyacinezelwa kwaye iguqulwe ngexesha lokwakhiwa, nto leyo eya kukhokelela ekuvuvukeni).
D. Faka umaleko wesibini weglue kwijoyinti. Okokuqala, faka iglue enamathelayo egobileyo, ulinde iqine ize ibe yi-elastic iintsuku ezi-2-3, uze ufake umaleko weglue enamathelayo kumphezulu wayo. Le ndlela inokuqinisekisa ukuba iglue enamathelayo yomphezulu ithambile kwaye ibukeka kakuhle.
Ngamafutshane, isiganeko "sokudumba" emva kokwakhiwa kwe-sealant asiyongxaki yomgangatho we-sealant, kodwa yindibaniselwano yezinto ezahlukeneyo ezingathandekiyo. Ukukhetha ngokuchanekileyo kwe-sealant kunye namanyathelo okuthintela ukwakhiwa okusebenzayo kunokunciphisa kakhulu amathuba okuba "idumba" livele.
[1] 欧利雅. (2023).小欧老师讲解密封胶“起鼓”原因及对应措施.
Ingxelo: ezinye iifoto zivela kwi-intanethi.
Ixesha leposi: Jan-31-2024
