I-Sealant ibhekisela ezintweni zokuvala eziwohloka ngesimo sobuso bokuvala, okungelula ukuzigeleza, futhi ezinamathelayo.
Kuyisinamathelisi esisetshenziselwa ukugcwalisa izikhala zokumiswa kokuvala. Sinemisebenzi yokulwa nokuvuza, ukungangeni manzi, ukulwa nokudlidliza, ukuvala umsindo kanye nokuvala ukushisa. Ngokuvamile, izinto ezomile noma ezingomile ezifana ne-asphalt, i-resin yemvelo noma i-resin yokwenziwa, irabha yemvelo noma irabha yokwenziwa ziyasetshenziswa njengezinto eziyisisekelo, futhi kufakwe izigcwalisi ezingasebenzi njenge-talc, ubumba, i-carbon black, i-titanium dioxide kanye ne-asbestos. Ama-plasticizer, izinyibilikisi, ama-curing agent, ama-accelerator, njll. Ingahlukaniswa ngezigaba ezintathu: i-elastic sealant, i-liquid sealing gasket kanye ne-sealing putty. Isetshenziswa kabanzi ekuvaleni ukwakhiwa, ezokuthutha, izinsimbi zikagesi kanye nezingxenye.
Kunezinhlobo eziningi zezithiyo zokuvala: Izithiyo ze-Silicone, izithiyo ze-polyurethane, izithiyo ze-polysulfide, izithiyo ze-acrylic, izithiyo ze-anaerobic, izithiyo ze-epoxy, izithiyo ze-butyl, izithiyo ze-neoprene, izithiyo ze-PVC, kanye nezithiyo ze-asphalt.
Izakhiwo eziyinhloko ze-sealant
(1) Ukubukeka: Ukubukeka kwe-sealant kunqunywa kakhulu ukusabalala kwe-filler esisekelweni. I-filler iyimpuphu eqinile. Ngemva kokusatshalaliswa yi-kneader, i-grinder kanye nomshini weplanethi, ingasatshalaliswa ngokulinganayo erabheni lesisekelo ukuze yakhe i-fine paste. Inani elincane lezinhlayiya ezincane noma isihlabathi liyamukeleka futhi livamile. Uma i-filler ingasatshalaliswanga kahle, kuzovela izinhlayiya eziningi eziqinile. Ngaphezu kokusabalala kwama-filler, ezinye izici zizothinta nokubukeka komkhiqizo, njengokuxuba ukungcola kwezinhlayiya, ukugoba, njll. Lawa macala abhekwa njengaqinile ngokubukeka.
(2) Ubulukhuni
(3) Amandla okudonsa
(4) Ukwelulwa
(5) I-modulus yokudonsa kanye nekhono lokufuduka
(6) Ukunamathela ku-substrate
(7) Ukukhipha: Lokhu ukusebenza kokwakhiwa kwe-sealant Into esetshenziselwa ukukhombisa ubunzima be-sealant uma isetshenziswa. I-glue ejiyile kakhulu izoba nokungaphumi kahle, futhi kuzoba nzima kakhulu ukunamathisela uma isetshenziswa. Kodwa-ke, uma i-glue yenziwe ibe mncane kakhulu uma ucabanga ngokuphuma kwayo, izothinta i-thixotropy ye-sealant. Ukuphumi kwayo kungalinganiswa ngendlela echazwe kumazinga kazwelonke.
(8) Thixotropy: Lena enye into yokusebenza kokwakhiwa kwe-sealant. Thixotropy iphambene nokugeleza, okusho ukuthi i-sealant ingashintsha isimo sayo kuphela ngaphansi kwengcindezi ethile, futhi ingagcina isimo sayo uma kungekho mandla angaphandle. ukuma ngaphandle kokugeleza. Ukunqunywa kokuwa okuchazwe indinganiso kazwelonke ukwahlulela kwe-thixotropy ye-sealant.
Isikhathi sokuthunyelwe: Novemba-04-2022