I-Sealant iyinto yokuvala eguquka ibe yisimo somphezulu wokuvala, akulula ukuyigeleza, futhi inokunamathela okuthile. Iyi-glue esetshenziselwa ukugcwalisa izikhala phakathi kwezinto ukuze idlale indima yokuvala. Inemisebenzi yokulwa nokuvuza, ukungangeni manzi, ukuvimbela ukudlidliza, ukuvimbela umsindo kanye nokuvimbela ukushisa.
Ngokuvamile isekelwe ezintweni eziqinile ezomile noma ezingomi njenge-asphalt, i-resin yemvelo noma i-resin yokwenziwa, irabha yemvelo noma irabha yokwenziwa. Yenziwe ngezinto zokugcwalisa ezingasebenzi njenge-talc, ubumba, i-carbon black, i-titanium dioxide kanye ne-asbestos, bese kungezwa ama-plasticizer, izinyibilikisi, ama-curing agents, ama-accelerator, njll.
Ukuhlukaniswa kwama-sealant
I-sealant ingahlukaniswa ibe yi-elastic sealant, i-liquid sealant gasket kanye nezigaba ezintathu ze-sealing putty.
Ngokusho kwesigaba sokwakheka kwamakhemikhali:ingahlukaniswa ngohlobo lwerabha, uhlobo lwe-resin, uhlobo olusekelwe ku-oyela kanye ne-polymer sealant yemvelo. Le ndlela yokuhlukanisa ingathola izici zezinto ze-polymer, inqume ukumelana kwazo nokushisa, ukuvala kanye nokuzivumelanisa nezimo ezihlukahlukene.
Uhlobo lwerabha:Lolu hlobo lwe-sealant lusekelwe ngerabha. Amarabha asetshenziswa kakhulu yirabha ye-polysulfide, irabha ye-silicone, irabha ye-polyurethane, irabha ye-neoprene kanye nerabha ye-butyl.
Uhlobo lwe-resin:Lolu hlobo lwesivali lusekelwe ku-resin. Ama-resin avame ukusetshenziswa yi-epoxy resin, i-unsaturated polyester resin, i-phenolic resin, i-polyacrylic resin, i-polyvinyl chloride resin, njll.
Okusekelwe ku-oyili:Lolu hlobo lwesivalo lusekelwe kumafutha. Amafutha avame ukusetshenziswa amafutha emifino ahlukahlukene afana namafutha e-linseed, amafutha e-castor namafutha e-tung, kanye namafutha ezilwane afana namafutha enhlanzi.
Ukuhlukaniswa ngokwesicelo:ingahlukaniswa ngohlobo lokushisa okuphezulu, uhlobo lokumelana nokubanda, uhlobo lokucindezela njalo njalo.
Ukuhlukaniswa ngokwezakhiwo zokwakha ifilimu:Ingahlukaniswa ngohlobo lokunamathela okomile, uhlobo olukwazi ukuxebuka okomile, uhlobo olunamathelayo olungomi kanye nohlobo lwe-viscoelastic olungomi kancane.
Ukuhlukaniswa ngokusetshenziswa:Ingahlukaniswa ibe yi-sealant yokwakha, i-sealant yemoto, i-insulation sealant, i-packaging sealant, i-mining sealant nezinye izinhlobo.
Ngokusho kokusebenza ngemva kokwakhiwa:ingahlukaniswa ngezinhlobo ezimbili: i-curing sealant kanye ne-semi-curing sealant. Phakathi kwazo, i-curing sealant ingahlukaniswa ibe yi-rigid and flexible. I-rigid sealant iqinile ngemva kwe-vulcanization noma i-solidification, futhi ayivamile ukuba ne-elasticity, ayikwazi ukugoba, futhi ngokuvamile imithungo ayikwazi ukususwa; ama-sealant aguquguqukayo ayanwebeka futhi athambile ngemva kwe-vulcanization. I-non-curing sealant iyi-soft solidifying sealant esagcina i-tackifier engomi ngemva kokwakhiwa futhi iqhubekela phambili esimweni sobuso.
Isikhathi sokuthunyelwe: Feb-18-2022