Njengoba sonke sazi, izakhiwo ngokuvamile kulindeleke ukuthi zibe nokuphila kwenkonzo okungenani iminyaka engama-50. Ngakho-ke, izinto ezisetshenziswayo kumele futhi zibe nokuphila isikhathi eside kwenkonzo. I-Silicone sealant isetshenziswe kabanzi emkhakheni wokuvimbela amanzi nokuvala izakhiwo ngenxa yokumelana kwayo nokushisa okuphezulu nokuphansi, ukumelana nokuguga kwesimo sezulu okuvelele, kanye nezakhiwo ezinhle zokubopha. Kodwa-ke, ngemva kwesikhathi esithile ngemva kokwakhiwa, ukushintsha kombala kwe-silicone sealant kube yinkinga evamile, okushiya "imigqa" engazelelwe ezakhiweni.
Kungani i-silicone glue ishintsha umbala ngemva kokusetshenziswa?
Kunezizathu eziningi zokushintsha umbala ngokwengxenye noma ngokuphelele kwe-silicone tunnel sealant noma i-glass glue, ikakhulukazi kulezi zici ezilandelayo:
1. Ukungahambisani kwezinto ezihlukene zokuvala izivalo Ama-sealant ane-acid, ama-sealant asekelwe ku-alcohol angathathi hlangothi, kanye nama-sealant asekelwe ku-oxime angasetshenziswa ndawonye, njengoba angathintana futhi abangele ukushintsha kombala. Ama-sealant engilazi ane-acid angabangela ukuthi ama-sealant asekelwe ku-oxime aphenduke aphuzi, futhi ukusebenzisa ama-sealant engilazi ane-oxime angathathi hlangothi kanye nama-sealant asekelwe ku-alcohol angathathi hlangothi nakho kungabangela ukuphuzi.
Ama-molecule akhishwa ngesikhathi sokulungiswa kwama-sealant angathathi hlangothi e-oxime, -C=N-OH, angasabela nama-acid ukuze akhe amaqembu ama-amino, afakwa kalula yi-oxygen emoyeni ukuze akhe izinto ezinombala, okuholela ekushintsheni kombala kwe-sealant.
2. Ukuthinta irabha nezinye izinto
Ama-silicone sealant angase abe phuzi uma ethintana ngqo nezinhlobo ezithile zerabha, njengerabha yemvelo, irabha ye-neoprene, kanye nerabha ye-EPDM. Lawa ma-rabha asetshenziswa kabanzi ezindongeni zamakhethini nasemafasiteleni/eminyango njengemicu yerabha, ama-gasket, nezinye izingxenye. Lokhu kushintsha kombala kubonakala ngokungalingani, lapho izingxenye kuphela ezithintana ngqo nerabha ziphenduka zibe phuzi kuyilapho ezinye izindawo zingathinteki.
3. Ukushintsha kombala we-sealant kungabangelwa futhi ukwelula ngokweqile
Lesi simo sivame ukuhlotshaniswa ngephutha nokulahlekelwa umbala kwe-sealant, okungabangelwa yizici ezintathu ezivamile.
1) I-sealant esetshenzisiwe idlule ikhono layo lokufuduka futhi ijoyinti linwetshiwe kakhulu.
2) Ubukhulu be-sealant ezindaweni ezithile buncane kakhulu, okuholela ekushintsheni kombala okugxile kulezo zindawo.
4. Ukushintsha kombala kwe-sealant kungabangelwa yizici zemvelo.
Lolu hlobo lokushintsha kombala luvame kakhulu kuma-sealant angathathi hlangothi ohlobo lwe-oxime, futhi isizathu esiyinhloko sokushintsha kombala ukuba khona kwezinto ezine-acid emoyeni. Kunemithombo eminingi yezinto ezine-acid emoyeni, njenge-curing acidic silicone sealant, i-acrylic coating esetshenziswa ekwakheni, amazinga aphezulu e-sulfur dioxide emkhathini ngesikhathi sasebusika ezindaweni ezisenyakatho, ukushisa imfucuza yepulasitiki, ukushisa i-asphalt, nokuningi. Zonke lezi zinto ezine-acid emoyeni zingabangela ukuthi ama-sealant ohlobo lwe-oxime ashintshe umbala.
Ungakugwema kanjani ukushintsha kombala we-silicone sealant?
1) Ngaphambi kokwakha, yenza ukuhlolwa kokuhambisana ezintweni ezithintana ne-sealant ukuqinisekisa ukuhambisana phakathi kwezinto, noma ukhethe izinto ezihambisana kakhulu, njengokukhetha imikhiqizo yerabha ye-silicone esikhundleni semikhiqizo yerabha ukuze unciphise amathuba okuba phuzi.
2) Ngesikhathi sokwakha, i-neutral sealant akufanele ithintane ne-acid sealant. Izinto ze-amine ezikhiqizwa ukubola kwe-neutral sealant ngemva kokuhlangana ne-acid zizokhipha umoya emoyeni futhi zibangele ukushintsha kombala.
3) Gwema ukuthintana noma ukuchayeka kwesivali ezindaweni ezigqwalisayo njenge-asidi nama-alkali.
4) Ukushintsha kombala kwenzeka kakhulu emikhiqizweni enombala okhanyayo, omhlophe, futhi esobala. Ukukhetha izinto zokuvala ezimnyama noma ezimnyama kunganciphisa ingozi yokushintsha kombala.
5) Khetha izithiyo zokuvala ezinekhwalithi eqinisekisiwe kanye nedumela elihle lomkhiqizo-JUNBOND.
Isikhathi sokuthunyelwe: Meyi-22-2023