I-silicone sealant noma i-glue ingumkhiqizo onamandla noguquguqukayo ongasetshenziswa ezinhlotsheni eziningi ezahlukene. Nakuba i-silicone sealant ingenawo amandla njengeminye i-sealant noma i-glue, i-silicone sealant ihlala iguquguquka kakhulu, noma ngabe yomile ngokuphelele nomawelaphekileI-silicone sealant ingamelana namazinga okushisa aphezulu kakhulu, okwenza kube kuhle kakhulu ekusetshenzisweni okubhekana nokushisa okuphezulu, njengakuma-gasket enjini.
I-silicone sealant eqinisiwe ikhombisa ukumelana okuhle kakhulu nesimo sezulu, ukumelana nokuguga, ukumelana ne-UV, ukumelana ne-ozone, ukumelana nokushisa okuphezulu nokuphansi, ukumelana nokudlidliza, ukumelana nomswakama, kanye nezakhiwo zokuvimbela amanzi; ngakho-ke, ukusetshenziswa kwayo kubanzi kakhulu. Ngawo-1990, yayivame ukusetshenziselwa ukubopha nokuvala embonini yengilazi, ngakho-ke yaziwa ngokuthi "i-glass adhesive."
Isithombe esiphezulu: I-silicone sealant eqinisiwe
Isithombe sesobunxele: Ukupakisha izigubhu ze-silicone sealant
I-silicone sealant ngokuvamile isekelwe ku-107 (i-hydroxy-terminated polydimethylsiloxane), futhi yakhiwe ngezinto ezifana nama-polymer anesisindo sama-molecule amaningi, ama-plasticizer, ama-filler, ama-cross-linking agents, ama-coupling agents, ama-catalysts, njll. Ama-plasticizer asetshenziswa kakhulu afaka uwoyela we-silicone, uwoyela omhlophe, njll. Ama-filler asetshenziswa kakhulu afaka i-nano-activated calcium carbonate, i-calcium carbonate esindayo, i-ultrafine calcium carbonate, i-fumed silica, nezinye izinto.
Ama-silicone sealant eza ngezindlela ezahlukene.
Ngokusho kohlobo lwesitoreji, ihlukaniswe yaba: izingxenye ezimbili (eziningi) kanye nengxenye eyodwa.
Ingxenye ezimbili (eziningi) zisho ukuthi i-silicone sealant ihlukaniswe ngamaqembu amabili (noma ngaphezulu kwezingxenye ezimbili) u-A no-B, noma iyiphi ingxenye eyodwa yodwa ayikwazi ukwakha i-curing, kodwa ngemva kokuba izingxenye ezimbili (noma ezingaphezu kwezingxenye ezimbili) zixutshwe, zizokhiqiza ukusabela kwe-cross-linking curing ekwakheni ama-elastomers.
Ingxube kumele yenziwe ngokushesha ngaphambi kokuyisebenzisa, okwenza lolu hlobo lwe-silicone sealant lube nzima ukulusebenzisa.
I-silicone sealant nayo ingeza njengomkhiqizo owodwa, ngaphandle kokuxuba okudingekayo. Uhlobo olulodwa lwe-silicone sealant yomkhiqizo owodwa lubizwa ngokuthiUkushisa Kwegumbi(RTV). Lolu hlobo lwe-sealant luqala ukuphola ngokushesha nje lapho luvezwa emoyeni – noma, ngokunembile, umswakama osemoyeni. Ngakho-ke, kubalulekile ukuthi usebenze ngokushesha uma usebenzisa i-RTV silicone sealant.
I-silicone sealant enengxenye eyodwa ingahlukaniswa cishe ibe: uhlobo lokususa i-acid, uhlobo lwe-dealcoholization, uhlobo lwe-deketoxime, uhlobo lwe-deacetone, uhlobo lwe-deamideation, uhlobo lwe-dehydroxylamine, njll. ngokuya ngama-ejenti ahlukene okuxhumanisa (noma ama-molecule amancane akhiqizwa ngesikhathi sokulungisa) asetshenziswayo. Phakathi kwawo, uhlobo lokususa i-acidification, uhlobo lwe-dealcoholization kanye nohlobo lwe-deketoxime zisetshenziswa kakhulu emakethe.
Uhlobo lokuqeda i-acidization yi-methyl triacetoxysilane (noma i-ethyl triacetoxysilane, i-propyl triacetoxysilane, njll.) njenge-ejenti yokuxhumanisa, ekhiqiza i-acetic acid ngesikhathi sokulungisa, eyaziwa kakhulu ngokuthi "i-acid glue". Izinzuzo zayo yilezi: amandla amahle kanye nokucaca, isivinini sokulungisa esisheshayo. Okubi yilezi: iphunga le-acetic acid elicasulayo, ukugqwala kwezinsimbi.
Uhlobo lwe-dealcoholization luyi-methyl trimethoxysilane (noma i-vinyl trimethoxysilane, njll.) njenge-ejenti yokuxhumanisa, inqubo yalo yokwelapha ikhiqiza i-methanol, eyaziwa kakhulu ngokuthi "iglue yohlobo lotshwala". Izinzuzo zayo yilezi: ukuvikelwa kwemvelo, ukungagqwali. Okubi: isivinini sokupholisa esihamba kancane, isikhathi sokugcina ishelufu siphansi kancane.
Uhlobo lwe-Deketo oxime luyi-methyl tributyl ketone oxime silane (noma i-vinyl tributyl ketone oxime silane, njll.) njenge-ejenti yokuxhumanisa, ekhiqiza i-butanone oxime ngesikhathi sokucubungula, eyaziwa kakhulu ngokuthi "i-oxime type glue". Izinzuzo zayo yilezi: akukho phunga elikhulu kakhulu, ukunamathela okuhle ezintweni ezahlukahlukene. Okubi: ukugqwala kwethusi.
Ngokusho kokusetshenziswa kwemikhiqizo ehlukaniswe phakathi: i-structural sealant, i-sealant engamelana nesimo sezulu, i-door and window sealant, i-sealant joint, i-sealant engashisi umlilo, i-anti-mildew sealant, i-sealant yokushisa okuphezulu.
Ngokusho kombala womkhiqizo kuya kumaphuzu: umbala wendabuko omnyama, omhlophe we-porcelain, obala, ompunga wesiliva izinhlobo ezine, eminye imibala esingayifeza ngokwezidingo zamakhasimende.
Kukhona nezinye izinhlobo eziningi ze-silicone sealant ezithuthuke kakhulu kwezobuchwepheshe. Uhlobo olulodwa, olubizwa ngokuthiukuzwela kwengcindezii-silicone sealant, inokuqina okuhlala njalo futhi inamathela ngokucindezela ngamabomu - ngamanye amazwi, yize izohlala “inamathela,” ngeke inamathele uma into imane ixhumane nayo noma iphumule. Olunye uhlobo lubizwa ngokuthiUV or imisebe yelashwei-silicone sealant, futhi isebenzisa ukukhanya kwe-ultraviolet ukwelapha i-sealant. Okokugcina,i-thermosetI-silicone sealant idinga ukuchayeka ekushiseni ukuze iphole.
I-silicone sealant ingasetshenziswa ezinhlotsheni ezahlukene zokusebenza. Lolu hlobo lwe-sealant luvame ukusetshenziswa ezimotweni nasezinhlotsheni ezihlobene nalo, njengosizo lokuvala injini, enama-gasket noma engenawo. Ngenxa yokuguquguquka kwayo okuphezulu, i-sealant nayo iyisinqumo esihle sezinto eziningi zokuzilibazisa noma imisebenzi yezandla.
Isikhathi sokuthunyelwe: Disemba-29-2023
