Njengoko sonke sisazi, izakhiwo ngokubanzi kulindeleke ukuba zibe nobomi benkonzo obuyi-50 leminyaka. Ke ngoko, izixhobo ezisetyenzisiweyo kufuneka nazo zibe nobomi benkonzo obude. I-silicone sealant isetyenziswa kakhulu kwicandelo lokukhusela amanzi nokuvala izakhiwo ngenxa yokumelana kwayo nobushushu obuphezulu nobuphantsi, ukumelana nokuguga kwemozulu okugqwesileyo, kunye neempawu ezilungileyo zokubopha. Nangona kunjalo, emva kwexesha elithile emva kokwakhiwa, ukutshintsha kombala kwe-silicone sealant kube yingxaki eqhelekileyo, eshiya "imiqolo" ekhawulezileyo kwizakhiwo.
Kutheni iglu yesilicone itshintsha umbala emva kokusetyenziswa?
Zininzi izizathu zokungaguquguquki kombala we-silicone tunnel sealant okanye iglu yeglasi, ikakhulu kwezi zinto zilandelayo:
1. Ukungahambelani kwezinto ezahlukeneyo zokutywina Akunakusetyenziswa kunye izinto zokutywina ezineasidi, izinto zokutywina ezineasidi, kunye nezinto zokutywina ezineasidi ezisekelwe kwi-oxime, kuba zinokuchaphazelana kwaye zibangele ukutshintsha kombala. Izinto zokutywina ezineasidi zinokubangela ukuba izinto zokutywina ezineasidi ezisekelwe kwi-oxime zibe tyheli, kwaye ukusebenzisa izinto zokutywina ezineasidi ezisekelwe kwi-oxime kunye nezinto zokutywina ezineasidi ezisekelwe kwi-oxime kunokubangela ukuba zibe tyheli.
Iimolekyuli ezikhutshwa ngexesha lokunyanga ii-sealants ze-oxime-type ezingathathi hlangothi, -C=N-OH, zinokusabela kunye nee-asidi ukwenza amaqela e-amino, akhutshwa lula yi-oksijini emoyeni ukuze enze izinto ezinemibala, nto leyo ekhokelela ekutshintsheni kombala we-sealant.
2. Ukudibana nerabha nezinye izinto
Izitywini zesilicone zinokuba tyheli xa zidibene ngqo neentlobo ezithile zerabha, njengerabha yendalo, irabha ye-neoprene, kunye nerabha ye-EPDM. Ezi rabha zisetyenziswa kakhulu kwiindonga zekhethini kunye neefestile/iingcango njengeemicu zerabha, ii-gasket, kunye nezinye izinto. Oku kutshintsha kombala kubonakala ngokungalingani, apho kuphela iindawo ezidibana ngqo nerabha zitshintsha zibe tyheli ngelixa ezinye iindawo zingachaphazeleki.
3. Ukutshintsha kombala we-sealant kunokubangelwa kukolula kakhulu
Le nto idla ngokubangelwa kukulahleka kombala kwe-sealant, okunokubangelwa zizinto ezintathu eziqhelekileyo.
1) Isitywini esisetyenzisiweyo sidlule amandla aso okushukuma kwaye ijoyinti yoluliwe kakhulu.
2) Ubukhulu be-sealant kwiindawo ezithile buncinci kakhulu, nto leyo ebangela utshintsho lombala olugxile kwezo ndawo.
4. Ukutshintsha kombala we-sealant kunokubangelwa zizinto ezisingqongileyo.
Olu hlobo lokutshintsha kombala luxhaphake kakhulu kwii-sealants ze-oxime-type ezingathathi hlangothi, kwaye esona sizathu sokutshintsha kombala kukubakho kwezinto ezine-asidi emoyeni. Kukho imithombo emininzi yezinto ezine-asidi emoyeni, ezifana ne-curing acidic silicone sealant, ii-acrylic coatings ezisetyenziswa ekwakheni, amanqanaba aphezulu e-sulfur dioxide emoyeni ngexesha lasebusika kwimimandla esemantla, ukutshisa inkunkuma yeplastiki, ukutshisa i-asphalt, nokunye. Zonke ezi zinto zine-asidi emoyeni zinokubangela ukuba ii-sealants ze-oxime-type zitshintshe umbala.
Ungayiphepha njani i-silicone sealant ukuba itshintshe umbala?
1) Ngaphambi kokuba wakhe, yenza uvavanyo lokuhambelana kwezinto ezidibene ne-sealant ukuqinisekisa ukuba ziyahambelana phakathi kwezinto, okanye ukhethe izinto ezihambelanayo, njengokukhetha iimveliso zerabha ze-silicone endaweni yeemveliso zerabha ukunciphisa amathuba okuba zibe tyheli.
2) Ngexesha lokwakhiwa, i-neutral sealant akufuneki idibane ne-acid sealant. Izinto ze-amine eziveliswa kukubola kwe-neutral sealant emva kokudibana ne-acid ziya kunyibilika emoyeni zize zibangele ukutshintsha kombala.
3) Kuphephe ukudibana okanye ukuvezwa kwesitywini kwiindawo ezirhabaxa ezifana nee-asidi kunye nee-alkali.
4) Ukutshintsha kombala kwenzeka kakhulu kwiimveliso ezinombala okhanyayo, omhlophe, nezibonakalayo. Ukukhetha izinto zokutywina ezimnyama okanye ezimnyama kunokunciphisa umngcipheko wokutshintsha kombala.
5) Khetha izitywini ezinomgangatho oqinisekisiweyo kunye nodumo oluhle lophawu-JUNBOND.
Ixesha lokuthumela: Meyi-22-2023