Njengoba sonke sazi, izakhiwo zilindeleke ukuthi zibe nempilo yokusebenza okungenani iminyaka engama-50. Ngakho-ke, izinto ezisetshenziswayo kufanele futhi zibe nempilo ende yesevisi. I-Silicone sealant isetshenziswe kabanzi emkhakheni wokwakha ukuvimbela amanzi nokuvala ngenxa yokumelana kwayo okuphezulu nokushisa okuphansi, ukumelana nesimo sezulu esivelele, kanye nezakhiwo ezinhle zokubopha. Kodwa-ke, ngemva kwesikhathi esilandela ukwakhiwa, ukuguquguquka kwe-silicone sealant sekuyinkinga evamile, okushiya "imigqa" engazelelwe ezakhiweni.
Kungani i-silicone glue ishintsha umbala ngemva kokusetshenziswa?
Kunezizathu eziningi zokushintsha umbala ngokwengxenye noma okuphelele kwe-silicone tunnel sealant noma i-glass glue, ikakhulukazi kulezi zici ezilandelayo:
1. Ukungahambisani kwezinto ezihlukene zokuvala izinsimbi Izitywini ezine-Acidic, izinsimbi ezisekelwe etshwaleni ezingathathi hlangothi, nama-neutral oxime-based sealants azikwazi ukusetshenziswa ndawonye, njengoba zingathintana futhi zidale ukushintsha kombala. Izivalo zengilazi ezine-acidic zingabangela ama-sealant asekelwe ku-oxime ukuthi abe phuzi, futhi ukusebenzisa ama-sealant asekelwe ku-oxime asekelwe ku-alcohol angathathi hlangothi kanye nezinsimbi zokuvala izingilazi ezisekelwe etshwaleni ndawonye kungabangela ukuphuzi.
Ama-molecule akhululwa ngesikhathi sokuphulukiswa kwama-sealant ohlobo lwe-oxime angathathi hlangothi, -C=N-OH, angasabela ngama-asidi ukuze akhe amaqembu ama-amino, akhishwa kalula umoya-mpilo emoyeni ukuze enze izinto ezinemibala, okuholela ekushintsheni kombala we-sealant.
2. Ukuthintana nenjoloba nezinye izinto
Ama-Silicone sealants angase abe phuzi lapho ethintana ngokuqondile nezinhlobo ezithile zenjoloba, njengerabha yemvelo, irabha ye-neoprene, nerabha ye-EPDM. Lawa ma-rubber asetshenziswa kakhulu ezindongeni zamakhethini nasemafasiteleni/eminyango njengemicu yerabha, ama-gaskets, nezinye izingxenye. Lokhu kuguquguquka kombala kubonakala ngokungalingani, izingxenye kuphela ezithintana ngqo nerabha eziphenduka zibephuzi kuyilapho ezinye izindawo zihlala zingathinteki.
3. Ukushintsha umbala kwe-sealant nakho kungabangelwa ukwelula ngokweqile
Lesi simo sivame ukubizwa ngephutha ukulahlekelwa umbala we-sealant, okungabangelwa izici ezintathu ezivamile.
1) I-sealant esetshenzisiwe idlule ikhono layo lokusuka futhi ilunga leluliwe kakhulu.
2) Ubukhulu be-sealant ezindaweni ezithile mncane kakhulu, okuholela ekushintsheni kombala kugxile kulezo zindawo.
4. Ukushintsha umbala kwe-sealant nakho kungabangelwa izici zemvelo.
Lolu hlobo lokushintsha umbala luvame kakhulu kuma-sealant ohlobo lwe-oxime angathathi hlangothi, futhi isizathu esiyinhloko sokushintsha umbala ubukhona bezinto ezine-asidi emoyeni. Kunemithombo eminingi yezinto ezine-asidi emoyeni, njengokwelapha i-acidic silicone sealant, i-acrylic coatings esetshenziswa ekwakheni, amazinga aphezulu e-sulphur dioxide emkhathini ebusika ezindaweni ezisenyakatho, ukushisa imfucumfucu yepulasitiki, i-asphalt evuthayo, nokunye. Zonke lezi zinto ezine-asidi ezisemoyeni zingabangela ama-sealant ohlobo lwe-oxime ukuthi ashintshe umbala.
Ungakugwema kanjani ukuguquguquka kwe-silicone sealant?
I-1) Ngaphambi kokwakhiwa, yenza isivivinyo sokuhambisana ezintweni ezixhumene ne-sealant ukuze uqinisekise ukuhambisana phakathi kwezinto zokwakha, noma ukhethe izinto ezihambisanayo ezengeziwe, njengokukhetha imikhiqizo yerabha ye-silicone esikhundleni semikhiqizo yenjoloba ukunciphisa amathuba okuba phuzi.
I-2) Ngesikhathi sokwakhiwa, i-sealant engathathi hlangothi akufanele ihlangane ne-asidi sealant. Izinto ze-amine ezikhiqizwa ukubola kwe-neutral sealant ngemva kokuhlangana ne-asidi zizokhipha umoya emoyeni futhi zidale ukushintsha kombala.
3) Gwema ukuthintana noma ukuchayeka kwesivalo ezindaweni ezonakalisayo njengama-acids nama-alkali.
4) Ukushintsha kombala kwenzeka ikakhulukazi emikhiqizweni enombala okhanyayo, omhlophe, kanye nesobala. Ukukhetha ama-sealant amnyama noma amnyama kunganciphisa ingozi yokushintsha umbala.
5) Khetha ama-sealants anekhwalithi eqinisekisiwe kanye negama elihle lomkhiqizo-JUNBOND.
Isikhathi sokuthumela: May-22-2023