Ukuhlaziywa Kwenqubo Yokubumba Ye-Door And Window Sealant

Njengengxenye ebalulekile yezinto zokwakha zokuvala, inqubo yokubumba yezinsimbi zezicabha namafasitela ithinta ngokuqondile ukunamathela komkhiqizo, ukumelana nesimo sezulu, kanye nezakhiwo zokuvala. Inqubo yokubumba yesayensi ayigcini nje ngokuthuthukisa ikhwalithi ye-sealant kodwa futhi iqinisekisa ukuzinza kwayo{1}isikhathi eside ezindaweni ezihlukene.

 

Inqubo yokubumba yama-sealant eminyango namafasitela inezinyathelo ezine ezibalulekile: ukuxuba impahla eluhlaza, ukulungiswa kwezinto eziyisisekelo, ukusabalalisa okungeziwe, nokubumba kokugcina. Okokuqala, i-polymer eyisisekelo (njenge-silicone, i-polyurethane, noma i-acrylate), izigcwalisi (njenge-calcium carbonate, i-carbon black), nezithasiselo (njengama-plasticizers nama-crosslinkers) zikalwa ngokunembile ngokuvumelana nezidingo zokubunjwa. Inqubo yokuhlanganisa kufanele yenziwe-ku-speed disperser ukuze kuqinisekiswe ukusatshalaliswa okufanayo kwezingxenye futhi kugwenywe umehluko wokugxilisa ingqondo wendawo othinta ukusebenza.

Ngesikhathi sesigaba sokulungiselela izinto eziyisisekelo, i-polymer ibhekana nokusabela kwamakhemikhali noma ukuguqulwa komzimba ukuze kuzuzwe izakhiwo ezifiselekayo ze-viscoelastic kanye zokwelapha. Isibonelo, ama-silicone sealant ngokuvamile asebenzisa iplatinamu{1}}i-catalyzed condensation reaction to crosslink linear polymers ibe isakhiwo senethiwekhi, ngaleyo ndlela yakhe isendlalelo esinwebekayo sokuvala. Ukusatshalaliswa kwezithasiselo kubaluleke kakhulu. Ukuhlakazwa ngendlela engaqondakali kwezigcwalisi ze-nanoscale kungaholela ekugxilweni kwengcindezi yendawo, kunciphise ukuqina kwe-sealant.

Izinqubo zokugcina zokubumba zifaka i-extrusion, ukubumba, noma ukubumba umjovo. Ama-sealant omnyango wokwakha kanye namafasitela avame ukukhiqizwa kusetshenziswa inqubo eqhubekayo yokukhipha, lapho i-scruder extruder icindezela okunamathelayo kube yimichilo emifaniswano, bese ipholiswa futhi iqiniswe ukuze imise umumo. Amanye ama-sealants{2}enhloso akhethekile angase acindezelwe{3}}ukuze ahlangabezane nezimfuneko zokuvala amalunga anomumo ongajwayelekile.

I-sealant eyakhiwe iphinde ibe ne-vulcanization noma ukwelashwa ukuze kuzuzwe izici zayo zokugcina. Isibonelo, ama-silicone sealant e-room temperature vulcanizing (RTV) elapha ngomswakama ovela emoyeni, kuyilapho izingxenye ezimbili{1}}ezivala ama-polyurethane sealants zilapha ngokushesha ngemva kokuxubaniswa.

Kafushane, inqubo yokwenza izinsimbi zomnyango namafasitela iwukuhlanganisa okuphelele kwezinto zesayensi, ubunjiniyela bamakhemikhali, nobuchwepheshe bokukhiqiza. Ukuthuthukisa amapharamitha enqubo kubalulekile ekuthuthukiseni ukusebenza kahle kokuvala nokwakha ukusebenza kahle kwamandla.