I-Sealant isho into yokuvala ewohloka ngokuma kwendawo yokuvala, akulula ukugeleza, futhi inokunamathela okuthile.
Kuyingcina esetshenziselwa ukugcwalisa izikhala zokumisa ukuze kuvalwe uphawu. Inemisebenzi ye-anti-leakage, i-waterproof, i-anti-vibration, i-sound insulation kanye nokushisa ukushisa. Imvamisa, izinto ezomile noma ezingezona ezomile ze-viscous ezifana ne-asphalt, i-resin yemvelo noma i-synthetic resin, irabha yemvelo noma irabha yokwenziwa isetshenziswa njengesisekelo, kanye nezigcwalisi ezingenasici ezifana ne-talc, ubumba, isikhutha esimnyama, i-titanium dioxide ne-asbestos zengezwa. Ama-plasticizers, ama-solvents, ama-ejenti okwelapha, ama-accelerator, njll. Angahlukaniswa ngezigaba ezintathu: i-elastic sealant, i-gasket sealing sealing kanye ne-sealing putty. Isetshenziswa kabanzi ekubekweni uphawu kwezokwakha, ezokuthutha, izinsimbi zikagesi kanye nezingxenye.
Kunezinhlobo eziningi zama-sealants: ama-Silicone sealants, ama-polyurethane sealants, ama-polysulfide sealants, ama-acrylic sealants, ama-anaerobic sealants, ama-epoxy sealants, ama-butyl sealants, ama-neoprene sealants, ama-PVC sealants, nama-asphalt sealants.
Izici eziyinhloko ze-sealant
(1)Ukubonakala: Ukubonakala kwesivalo sophawu kunqunywa ngokusakazwa kwesigcwali esisekelweni. I-filler iyimpushana eqinile. Ngemva kokuhlakazwa yi-kneader, i-grinder kanye nomshini weplanethi, ingahlakazwa ngokulinganayo ku-rubber yesisekelo ukuze wenze unamathisele omuhle. Inani elincane lezinhlawulo ezincane noma isihlabathi liyamukeleka futhi livamile. Uma i-filler ingahlakazeka kahle, kuzovela izinhlayiya eziningi ezimahhadla. Ngaphezu kokuhlakazeka kwama-fillers, ezinye izici zizophinde zithinte ukubukeka komkhiqizo, njengokuxuba ukungcola kwezinhlayiya, uqweqwe, njll. Lezi zimo zibhekwa njengezilukhuni ngokubukeka.
(2) Ukuqina
(3) Amandla okuqina
(4) Ukwelula
(5) I-Tensile modulus nekhono lokususa
(6) Ukunamathela ku-substrate
(7) I-Extrusion: Lokhu ukusebenza kokwakhiwa kwe-sealant Into esetshenziselwa ukukhombisa ubunzima be-sealant uma isetshenziswa. I-glue ewugqinsi kakhulu izoba nokunwebeka okuncane, futhi kuzoba nzima kakhulu ukunamathisela uma isetshenziswa. Kodwa-ke, uma i-glue yenziwe ibe mncane kakhulu ngokumane icubungule i-extrudability, izothinta i-thixotropy ye-sealant. I-extrudability ingakalwa ngendlela echazwe kuzinga likazwelonke.
(8) Thixotropy: Lena enye into yokusebenza kokwakhiwa kwe-sealant. Thixotropy iphambene ne-fluidity, okusho ukuthi i-sealant ingashintsha kuphela ukuma kwayo ngaphansi kwengcindezi ethile, futhi ingakwazi ukugcina isimo sayo uma kungekho mandla angaphandle. ukuma ngaphandle kokugeleza. Ukunqunywa kwe-sag eshiwo yindinganiso kazwelonke ukwahlulela kwe-thixotropy ye-sealant.
Isikhathi sokuthumela: Nov-04-2022