Izinto zokuncamathelisa kunye nezitywina zihlobene ngokusondeleyo xa zisingisele ekuncamatheleni okanye ekudibaneni iindawo ezimbini nangaphezulu kunye. Zombini zilulwelo olugudileyo oluphantsi kokulungiswa kweekhemikhali ukwenza ibhondi eyomeleleyo kumphezulu osetyenziswayo.
Izinto zokuncamathelisa zendalo kunye nezitywini ziyafumaneka ngeenxa zonke kuthi kwasekuqaleni. Zombini zisetyenziswa apha naphaya, ukusuka kwiindibano zocweyo zasekhaya ukuya kwi-teknoloji entsha. Umzekelo, ukupakishwa, ukuveliswa kwephepha, ukuveliswa kweenqwelomoya, i-aerospace, izihlangu, iimoto kunye nezixhobo zombane zonke ziyimizi-mveliso efuna i-adhesives kunye ne-sealants.
Ukuthelekisa phakathi kwe-Adhesives kunye ne-Sealants
La magama mabini ayafana kwaye atshintshisana kwiimeko ezithile, kodwa kusekho ama-nuances phakathi kwawo ngenjongo kunye nokusetyenziswa kokugqibela. Ukuncamathelisa luhlobo lwento esetyenziselwa ukubamba imiphezulu emibini ngendlela eyomeleleyo nesisigxina ngelixa i-sealant iyinto esetyenziselwa ukuncamathisela imiphezulu emibini nangaphezulu.
Eyangaphambili iluncedo xa kufuneka umanyano oluhlala ixesha elide noluqinileyo; Kamva isetyenziselwa ukuphepha ukuvuza kwamanzi okanye igesi kwindawo yokuqala ngenjongo yesikhashana. Amandla ebhondi ye-sealant ayikho buthathaka ngokwemvelo kune-adhesive, njengoko ukusebenza kwabo kuxhomekeke kuhlobo oluthile kunye nesicelo esicetywayo, kubandakanywa amandla abamelana nawo kunye neempawu zabo ze-thermal.
I-Adhesives kunye ne-sealants zabelana ngeempawu eziphambili zokuziphatha ezenza ukuba kubekho ukudibanisa okusebenzayo:
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Ubumanzi: Zombini kufuneka zibonise ukuziphatha okufana nolwelo ngexesha lokufaka isicelo ukuqinisekisa unxibelelwano olufanelekileyo kunye nomphezulu okanye i-substrates, ngokufanelekileyo ukugcwalisa naziphi na izikhewu.
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Ukuqinisa: Zombini ziqina zibe sisiqina okanye semi-solid ukuxhasa kunye nokumelana nemithwalo eyahlukeneyo efakwe kwibhondi.
I-Viscosity ye-Adhesives kunye ne-Sealants
I-Adhesives yahlulahlulwe kwi-adhesives yendalo kunye ne-synthetic adhesives ngokwemvelaphi yazo. I-Viscosity ithathwa njengokumelana nolwelo okanye ukuhamba. Izinto ezincamathelayo ezibonwayo kunye nezitywini azilulwelo olungelulo olwaseNewtonian. Ngamanye amazwi, ukufundwa kwe-viscosity kuxhomekeke kwireyithi yokucheba elinganisiweyo.
I-Viscosity idlala indima ebalulekileyo kwimveliso kunye nokusetyenziswa kwe-adhesives, ekhonza njengesalathisi esibalulekileyo seempawu ezifana nokuxinana, ukuzinza, umxholo we-solvent, izinga lokuxuba, ubunzima be-molecular, kunye nokuhambelana ngokubanzi okanye ukusabalalisa ubungakanani be-particle.
I-viscosity ye-adhesives iyahluka kakhulu ngokusekelwe kwisicelo sabo esijoliswe kuyo, njengokutywinwa okanye ukubopha. Izinto zokuncamathelisa zahlulwe zaba ziindidi ze-viscosity ephantsi, ephakathi, kunye nephezulu, nganye ifanele iimeko ezithile zokusetyenziswa:
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I-Adhesives ye-Viscosity ephantsi: Ilungele i-encapsulation, i-potting, kunye nokukhulelwa ngenxa yokukwazi ukuhamba ngokulula kunye nokuzalisa izithuba ezincinci.
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Izincamathelisi zeViscosity eziPhakathi: Ngokuqhelekileyo isetyenziselwa ukudibanisa kunye nokutywinwa, ukunika ibhalansi yokuhamba kunye nokulawula.
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Izincamathelisi zeViscosity eziphezulu: Yenzelwe usetyenziso olungathontsisiyo okanye olungathontsisiyo, njengeepoxies ezithile, apho ubume besakhiwo buyimfuneko.
Iindlela zemveli zokulinganisa i-viscosity zixhomekeke kwisampulu yesandla kunye nohlalutyo lwebhubhoratri, edla ixesha kunye nomsebenzi onzima. Ezi ndlela azifanelekanga kulawulo lwenkqubo yexesha langempela, njengoko iipropati ezilinganiswe kwilebhu zisenokungabonakali ngokuchanekileyo ukuziphatha kwe-adhesive kumgca wokuvelisa ngenxa yezinto ezifana nexesha elidlulileyo, i-sedimentation, okanye ukuguga kwamanzi.
ILonnmeterimitha ye-viscosity engaphakathiinikezela ngesisombululo esisingqinisiso solawulo lwe-viscosity yexesha langempela, ukujongana nemida yeendlela zemveli kunye nokuphucula iinkqubo zokuvelisa i-adhesive. Ihambisa le ntlukwano kunye noluhlu olubanzi lokulinganisa (0.5 cP ukuya kwi-50,000 cP) kunye nemilo yenzwa enokwenziwa ngokwezifiso, okwenza ukuba ihambelane neentlobo ezahlukeneyo ze-adhesive formulations, ukusuka kwi-low-viscosity cyanoacrylates ukuya kwi-high-viscosity epoxy resins. Ukukwazi kwayo ukudibanisa kwimibhobho, iitanki, okanye ii-reactors ezinokhetho lokufakela oluguquguqukayo (umzekelo, i-DN100 flange, ukufakwa kobunzulu ukusuka kwi-500mm ukuya kwi-4000mm) iqinisekisa ukuguquguquka kuzo zonke izicwangciso zemveliso ezahlukeneyo.
Ukubaluleka kweViscosity kunye nokuJonga ukuNina
Ukuveliswa kwe-Adhesive kubandakanya ukudibanisa okanye ukusabalalisa izinto ezahlukeneyo ukuphumeza iipropati ezithile, kubandakanywa ukuxhathisa imichiza, ukuzinza kwe-thermal, ukuxhathisa ukothuka, ukulawulwa kwe-shrinkage, ukuguquguquka, ukusetyenzwa, kunye namandla kwimveliso yokugqibela.
I-Lonnmeter inline viscometer iyilelwe usetyenziso olwahlukeneyo kwiindawo ezahlukeneyo zokulinganisa izinto zokuncamathelisa, iglu, okanye iinkqubo zokuvelisa istatshi. Ivumela ukujongwa okungaphakathi kwe-viscosity kunye neeparamitha eziphuma kuyo ezifana noxinaniso kunye nobushushu. Ufakelo lunokuba ngokuthe ngqo kwitanki yokuxuba ukuqonda ukuguquka kwe-viscosity kwaye unqume xa ukuxuba okufunekayo kufikeleleke; kumatanki okugcina ukuqinisekisa ukuba iipropati ze-fluid zigcinwa; okanye kwimibhobho, njengoko ulwelo luhamba phakathi kweeyunithi.
Ukufakwa kwe-Inline Viscosity kunye ne-Density Meters
KwiiTanki
Ukulinganisa i-viscosity ngaphakathi kwetanki yokuxuba ulwelo oluncamathelayo lwenza uhlengahlengiso olukhawulezayo ukuze kuqinisekiswe iipropati eziguquguqukayo zolwelo, okukhokelela ekwandeni kobuchule bokuvelisa kunye nokuncipha kwenkunkuma yobutyebi.
Imitha ye-viscosity inokufakwa kwi-tank yokuxuba. Ubuninzi kunye nemitha ye-viscosity ayikhuthazwa ukuba kufakwe ngokuthe ngqo kwiitanki zokuxuba, njengoko isenzo sokuxuba singazisa ingxolo echaphazela ukuchaneka kokulinganisa. Nangona kunjalo, ukuba itanki ibandakanya umgca wempompo yokubuyisela kwakhona, imitha yoxinaniso kunye ne-viscosity inokufakwa ngokufanelekileyo kumbhobho, njengoko kuchazwe kwicandelo elilandelayo.
Ukufumana isikhokelo sofakelo olulungiselelweyo, abathengi kufuneka baqhagamshelane neqela lenkxaso kwaye babonelele ngemizobo yetanki okanye imifanekiso, echaza izibuko ezikhoyo kunye neemeko zokusebenza ezifana nobushushu, uxinzelelo, kunye ne-viscosity elindelekileyo.
Kwimibhobho
Eyona ndawo ifanelekileyo yokufakela i-viscosity kunye nemitha yoxinaniso kwimibhobho encamathelayo yolwelo ikwingqiniba, kusetyenziswa i-axial setup apho i-probe's sensing element ijongene nokuhamba kolwelo. Oku kufuna iprobe yofakelo olude, olunokwenziwa ngokwezifiso kubude bofakelo kunye noqhagamshelo lwenkqubo ngokusekelwe kubungakanani bombhobho kunye neemfuno.
Ubude bofakelo kufuneka buqinisekise ukuba into ezivayo idibane ngokupheleleyo nolwelo oluqukuqelayo, unqanda indawo ezifileyo okanye ezimileyo kufutshane nezibuko lofakelo. Ukubeka into yoluvo kwicandelo lombhobho othe tye kunceda ukuyigcina icocekile, njengoko ulwelo luhamba phezu koyilo olulungelelanisiweyo lweprobe, luphucula ukuchaneka komlinganiselo kunye nokuthembeka.
Ixesha lokuposa: Jul-25-2025
