Izinamathiselo nama-sealants ahlobene eduze uma kubhekiselwa ekunamathiseleni noma ekuhlanganiseni izingxenye ezimbili noma ngaphezulu ndawonye. Zombili ziwuketshezi olunamekiwe olucutshungulwa ngamakhemikhali ukuze kwakhe isibopho esiqinile endaweni esetshenziswayo.
Izinamathiselo zemvelo kanye nama-sealants ayatholakala eduze kwethu ekuqaleni. Zombili zisetshenziswa lapha nalaphaya, kusukela kuma-workshops asekhaya kuya ekusungulweni kwezobuchwepheshe. Isibonelo, ukupakisha, ukukhiqizwa kwamaphepha, ukukhiqizwa kwezindiza, i-aerospace, izicathulo, izinto zezimoto ne-elekthronikhi zonke izimboni ezidinga izinto zokunamathisela nama-sealant.
Ukuqhathanisa Phakathi Kwama-Adhesives nama-Sealants
Lawa magama womabili ayafana futhi ayakwazi ukushintshana ezimeni ezithile, kodwa asekhona ama-nuances phakathi kwawo ngenhloso nasekusetshenzisweni kokugcina. I-Adhesive iwuhlobo lwento esetshenziselwa ukubamba izindawo ezimbili ngendlela eqinile nengapheli kuyilapho i-sealant iyinto esetshenziselwa ukunamathisela izindawo ezimbili noma ngaphezulu.
Owokuqala uwusizo lapho kudingeka inyunyana ehlala isikhathi eside futhi eqinile; eyakamuva isetshenziselwa ukugwema ukuvuza koketshezi noma igesi ekuqaleni ngenjongo yesikhashana. Amandla ebhondi ye-sealant awanawo amandla ngokwemvelo kunalawo okunamathelayo, njengoba ukusebenza kwawo kuncike ohlotsheni oluthile kanye nesicelo esihlosiwe, okuhlanganisa amandla amelana nawo kanye nezakhiwo zawo ezishisayo.
Ama-Adhesives nama-sealants abelana ngezici zokuziphatha ezibalulekile ezivumela ukuhlangana okusebenzayo:
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Uketshezi: Kokubili kufanele kubonise ukuziphatha okufana noketshezi ngesikhathi sokufaka isicelo ukuze kuqinisekiswe ukuthintana okufanele nezindawo noma ama-substrates, kugcwalise ngempumelelo noma yiziphi izikhala.
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Ukuqinisa: Kokubili kuqina kube kusimo esiqinile noma esiqinile ukuze kusekelwe futhi kubekezeleleke imithwalo ehlukahlukene esetshenziswa kubhondi.
I-Viscosity yama-Adhesives nama-Sealants
Izinamathiselo zihlukaniswa ngokwezinamatheliso zemvelo kanye nezinamathelisi zokwenziwa ngokwemvelaphi yazo. I-viscosity ithathwa njengokumelana noketshezi noma ukugeleza. Okunamathelisa i-Viscous nama-sealants uketshezi olungewona olwase-Newtonian. Ngamanye amazwi, ukufundwa kwe-viscosity kuncike esilinganisweni se-shear esilinganisiwe.
I-Viscosity idlala indima ebalulekile ekukhiqizweni nasekusetshenzisweni kwezinamathiselo, esebenza njengenkomba eyinhloko yezakhiwo ezifana nokuminyana, ukuzinza, okuqukethwe kwe-solvent, isilinganiso sokuxuba, isisindo samangqamuzana, kanye nokuvumelana okuphelele noma ukusabalalisa usayizi wezinhlayiyana.
I-viscosity ye-adhesives iyahluka ngokuphawulekayo ngokusekelwe ekusetshenzisweni kwabo okuhlosiwe, njengokubeka uphawu noma ukubopha. Izinamathiselo zihlukaniswa ngezinhlobo eziphansi, eziphakathi, neziphezulu ze-viscosity, ngayinye ifanele izimo ezithile zokusetshenziswa:
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Izinamathiselo ze-Viscosity eziphansi: Ilungele ukuhlanganisa, ukubumba, nokukhulelwa ngenxa yekhono lazo lokugeleza kalula futhi ligcwalise izikhala ezincane.
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I-Medium Viscosity Adhesives: Okuvame ukusetshenziselwa ukuhlanganisa nokubeka uphawu, ukunikeza ibhalansi yokugeleza nokulawula.
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I-Viscosity Adhesives ephezulu: Idizayinelwe izinhlelo zokusebenza ezingaconsi noma ezinganciphisi, njengama-epoxies athile, lapho ubuqotho besakhiwo bubalulekile.
Izindlela zendabuko zokulinganisa i-viscosity zincike ekuthathweni kwesampula okwenziwa ngesandla kanye nokuhlaziywa kwelabhorethri, okudla isikhathi futhi okukhandlayo. Lezi zindlela azifaneleki ekulawuleni inqubo yesikhathi sangempela, njengoba izici ezikalwa elebhu zingase zingabonisi ngokunembile ukuziphatha kokunamathelayo emugqeni wokukhiqiza ngenxa yezinto ezifana nesikhathi esidlulile, ukubola, noma ukuguga koketshezi.
I-Lonnmeterimitha ye-viscosity emgqeniinikeza isixazululo esisezingeni eliphezulu sokulawula i-viscosity ngesikhathi sangempela, ukubhekana nokulinganiselwa kwezindlela zendabuko kanye nokuthuthukisa izinqubo zokukhiqiza okunamathelayo. Ivumela lokhu kuhlukahluka ngebanga elibanzi lokulinganisa (0.5 cP kuya ku-50,000 cP) kanye nokwakheka kwezinzwa ezenziwe ngokwezifiso, okuyenza ihambisane nokwakheka okunamathelayo okuhlukahlukene, kusuka kuma-cyanoacrylates aphansi-viscosity kuya kuma-resin epoxy e-viscosity ephezulu. Ikhono layo lokuhlanganisa amapayipi, amathangi, noma ama-reactor anezinketho zokufaka eziguquguqukayo (isb, i-DN100 flange, ukujula kokufakwa kusuka ku-500mm kuya ku-4000mm) iqinisekisa ukuguquguquka kuzo zonke izinhlelo zokukhiqiza ezihlukene.
Ukubaluleka kwe-Viscosity kanye Nokuqapha Kokuminyana
Ukukhiqizwa kwe-Adhesive kuhilela ukuxuba noma ukusabalalisa izinto ezihlukahlukene ukuze kuzuzwe izakhiwo ezithile, okuhlanganisa ukumelana namakhemikhali, ukuzinza kokushisa, ukumelana nokushaqeka, ukulawulwa kokunciphisa, ukuguquguquka, ukusevisa, namandla kumkhiqizo wokugcina.
I-viscometer esemgqeni we-Lonnmeter yakhelwe ukusetshenziswa okuhlukahlukene ezindaweni zokulinganisa ezinamathelayo, amaglues, noma izinqubo zokukhiqiza isitashi. Inika amandla ukuqapha okusemgqeni kwe-viscosity kanye namapharamitha aphuma kokunye afana nokuminyana nezinga lokushisa. Ukufakwa kungaba ngokuqondile ku-tank yokuxuba ukuze uqonde ukuvela kwe-viscosity futhi unqume ukuthi ukuxuba okudingekayo kufinyelelwe nini; emathangini okugcina ukuze kuqinisekiswe izakhiwo eziwuketshezi ziyagcinwa; noma ngamapayipi, njengoba uketshezi lugeleza phakathi kwamayunithi.
Ukufakwa kwe-Inline Viscosity kanye namamitha we-Density
Emathangeni
Ukulinganisa i-viscosity ngaphakathi kwethangi lokuxuba uketshezi olunamathelayo kwenza ukulungiswa okusheshayo kuqinisekiswe izakhiwo eziwuketshezi ezingaguquki, okuholela ekwandeni kokusebenza kahle kokukhiqiza kanye nokuncipha kwemfucuza yensiza.
Imitha ye-viscosity ingafakwa ethangini lokuxuba. Amamitha we-Density and viscosity awanconywa ukufakwa okuqondile emathangeni okuxuba, njengoba isenzo sokuxuba singase sethule umsindo othinta ukunemba kokulinganisa. Kodwa-ke, uma ithangi lihlanganisa umugqa wepompo wokujikeleza kabusha, imitha ye-density kanye ne-viscosity ingafakwa ngempumelelo epayipini, njengoba kuchazwe esigabeni esilandelayo.
Ukuze uthole isiqondiso sokufaka esiklanyelwe, amaklayenti kufanele axhumane nethimba losekelo futhi anikeze imidwebo yamathangi noma izithombe, ecacisa izimbobo ezitholakalayo nezimo zokusebenza ezifana nezinga lokushisa, ukucindezela, nokubonakala kwe-viscosity okulindelekile.
Emapayipini
Indawo efanelekile yokufaka i-viscosity kanye namamitha wokuminyana kumapayipi oketshezi olunamathelayo isendolo, kusetshenziswa ukusethwa kwe-axial lapho isici senzwa se-probe sibhekene nokugeleza koketshezi. Lokhu ngokuvamile kudinga uphenyo olude lokufaka, olungenziwa ngendlela oyifisayo ubude bokufakwa kanye nokuxhumeka kwenqubo ngokusekelwe kusayizi wepayipi nezimfuneko.
Ubude bokufaka kufanele buqinisekise ukuthi i-elementi yenzwa ithintana ngokugcwele noketshezi olugelezayo, igwema izindawo ezifile noma ezimile eduze kwembobo yokufaka. Ukubeka i-elementi yenzwa engxenyeni yepayipi eqondile kusiza ukuyigcina ihlanzekile, njengoba uketshezi lugeleza phezu kwedizayini ehlelekile ye-probe, kuthuthukisa ukunemba kokulinganisa nokuthembeka.
Isikhathi sokuthumela: Jul-25-2025
