Abstract:I-athikili ihlaziya ngemininingwane mayelana nomthelela wekhwalithi wokulinganisa impahla ye-adhesive enqubweni ye-lamination. Ngaphezu kwalokhu, iveza ukuthi esikhundleni sokwahlulela ukusebenza kokulinganisa ngokwahlulela uma kukhona.'amachashazi amhlophe' noma 'amabhamuza', wukungafihli kwemikhiqizo enamayini okungaba izinga lokuhlola ukusebenza kokulinganisa kokunamathelayo.
1.Inkinga Yebhamuza kanye Nokumiswa Kweglue
Amachashazi amhlophe, amabhamuza, nokungaphumeleli obala yizindaba zekhwalithi ezivamile ekucutshungulweni kwezinto eziyinhlanganisela.Ezimweni eziningi, amaphrosesa wezinto ezihlanganisiwe athi lezi zinkinga ezingenhla zihlobene nokungalinganisi kahle kokunamathelayo!
1.1 Le ngcina ayiyona leyo glu
Amaphrosesa wezinto ezihlanganisiwe angase abuyisele imiphongolo enamathelayo engavuliwe futhi engasetshenziswanga kubahlinzeki ngokusekelwe ekwahluleleni okungekuhle kokunamathelayo, noma ukufaka izikhalazo noma izimangalo kubahlinzeki.
Kumele kuqashelwe ukuthi i-glue ebhekwa njengokungasebenzi kahle kwezinga "isixazululo sokusebenza kweglue" esilungiselelwe / sihlanjululwe ngamakhasimende futhi sine-viscosity yenani elithile.I-glue ebuyisiwe iyibhakede lokuqala leglue elingavuliwe.
Lawa mabhakede amabili "okunamathisela" ayimiqondo ehluke ngokuphelele kanye nezinto!
1.2Izinkomba zokulinganisa zokuleveliswa kweglue
Izinkomba zobuchwepheshe zokuhlola ukusebenza kokulinganisa kokunamathelayo kufanele kube yi-viscosity kanye nokungezwani kokumanzisa kwendawo.Noma kunalokho, "i-fluidity yeglue" iyinhlanganisela "ye-fluidity yeglue" kanye "nokumanzi kweglue".
Emazingeni okushisa asekamelweni, ukungezwani kokumanzisa okungaphezulu kwe-ethyl acetate cishe kungama-26mN/m.
Ukugxiliswa komgqomo wangempela (okuqukethwe okuqinile) kokunamathela kwe-polyurethane esekelwe ku-solvent esetshenziswa emkhakheni wokucubungula izinto eziyinhlanganisela ngokuvamile kuphakathi kuka-50% -80%.Ngaphambi kokwenza ukucubungula okuyinhlanganisela, izinto ezinamathelayo ezibalwe ngenhla zidinga ukuhlanjululwa ukuze kuhlanganiswe ukusebenza okungaba ngu-20% -45%.
Ngenxa yokuthi ingxenye eyinhloko yesisombululo sokusebenza sokunamathela esihlanjululwe yi-ethyl acetate, ukungezwani kokumanzisa okungaphezulu kwesisombululo sokusebenza sokunamathela esihlanjululwe kuzoba seduze nokungezwani kokumanzisa okungaphezulu kwe-ethyl acetate ngokwayo.
Ngakho-ke, inqobo nje uma ukungezwani kokumanzisa okungaphezulu kwe-substrate eyinhlanganisela esetshenzisiwe kuhlangabezana nezidingo eziyisisekelo zokucubungula okuyinhlanganisela, ukumanzisa kwe-adhesive kuzoba kuhle kakhulu!
Ukuhlolwa kwe-fluidity yeglue yi-viscosity.Emkhakheni wokucubungula okuyinhlanganisela, lokho okubizwa ngokuthi i-viscosity (okungukuthi ukusebenza kwe-viscosity) kubhekisela esikhathini esingamasekhondi uketshezi olusebenzayo lweglue oluba nalo lapho lugeleza luphuma enkomishini ye-viscosity, olukalwa kusetshenziswa imodeli ethile yenkomishi ye-viscosity.Kungacatshangwa ukuthi uketshezi olusebenzayo lweglue olulungiselelwe kusuka kumabanga ahlukene e-glue yebhakede lokuqala lune-"viscosity yokusebenza" efanayo, futhi "uketshezi olusebenzayo" lwalo "lune-glue fluidity" efanayo!
Ngaphansi kwezinye izimo ezingaguquki, lapho "i-viscosity yokusebenza" ephansi "ye-fluid esebenzayo" elungiselelwe nge-adhesive yohlobo olufanayo lohlaka, ngcono "i-adhesive fluidity" yayo!
Ngokuqondile, kumamaki amaningana ahlukene wokunamathisela, uma inani le-viscosity lesisombululo sokusebenza esihlanjululwe liyimizuzwana engu-15, isisombululo esisebenzayo esilungiselelwe yilawa mabanga okunamathela sinokufana "nokulinganisa kweglue".
1.3Impahla yokukala yeglue iyisici soketshezi olusebenzayo lweglue
Obunye utshwala abukhi uketshezi lwe-viscous lapho umgqomo usanda kuvulwa, kodwa kunalokho i-jelly efana ne-projectile engenamanzi.Kudingeka zihlakazwe futhi zihlanjululwe ngenani elifanele le-solvent ephilayo ukuze zithole ukugxila okufunayo kanye ne-viscosity yeglue.
Kusobala ukuthi ukusebenza kokulinganisa kweglue kuwukuhlolwa kwesixazululo esisebenzayo esakhiwe “ekugxilweni kokusebenza” okuthile, kunokuhlolwa kweglue yomphongolo yasekuqaleni engaxutshiwe.
Ngakho-ke, akulungile ukusho ukuthi izinga eliphansi leglue libangelwa izici ezivamile zohlobo oluthile lweglue lokuqala!
2.Izici ezithinta izinga lokunamathela
Nokho, ngesixazululo sokusebenza sokunamathela esihlanjululwe, kunomehluko ngempela ezingeni lawo lamanzi anamathelayo!
Njengoba kushiwo ngaphambili, izinkomba eziyinhloko zokuhlola ukusebenza kokulingana koketshezi olunamathelayo olusebenzayo ukungezwani kokumanzisa okungaphezulu kanye ne-viscosity yokusebenza.Inkomba yengcindezi yokumanzisa phezulu ayibonisi izinguquko ezibalulekile phakathi kwebanga lokugxila elivamile lokusebenza.Ngakho-ke, ingqikithi yokulinganisa okunamathelayo okungalungile ukuthi ngesikhathi senqubo yesicelo, i-viscosity ye-adhesive ikhuphuka ngokungavamile ngenxa yezinto ezithile, okuholela ekwehleni kokusebenza kwayo kokulinganisa!
Yiziphi izici ezingabangela ushintsho ku-viscosity yeglue ngesikhathi sokusetshenziswa kwayo?
Kunezici ezimbili eziyinhloko ezingabangela izinguquko ku-viscosity yeglue, enye ukushisa kweglue, kodwa ukugxila kweglue.
Ngaphansi kwezimo ezijwayelekile, i-viscosity yoketshezi iyancipha ngokukhuphuka kwezinga lokushisa.
Emabhukwini omsebenzisi anikezwe izinkampani ezinamathelayo ezahlukahlukene, amanani e-viscosity wesisombululo sokunamathisela (ngaphambi nangemva kokuhlanjululwa) kulinganiswa kusetshenziswa i-viscometer ejikelezayo noma inkomishi ye-viscosity ekushiseni okuwuketshezi okungu-20 ° C noma 25 ° C (okungukuthi izinga lokushisa lokunamathisela isisombululo ngokwaso) zivame ukukhonjiswa.
Ohlangothini lweklayenti, uma izinga lokushisa lokugcinwa kwebhakede lokuqala leglue kanye ne-diluent (ethyl acetate) liphakeme noma lingaphansi kuka-20 ° C noma 25 ° C, izinga lokushisa leglue elilungisiwe liyoba ngaphezulu noma ngaphansi kuka-20 ° C. noma 25 ° C. Ngokwemvelo, inani langempela le-viscosity yeglue elilungisiwe lizophinde libe ngaphansi kwenani le-viscosity elikhonjiswe encwadini.Ebusika, izinga lokushisa le-adhesive elungiselelwe lingase libe ngaphansi kuka-5 ° C, futhi ehlobo, izinga lokushisa lokunamathisela elilungisiwe lingase libe ngaphezu kuka-30 ° C!
Kufanele kuqashelwe ukuthi i-ethyl acetate iyi-solvent ephilayo eguquguqukayo kakhulu.Phakathi nenqubo ye-volatilization ye-ethyl acetate, izothatha inani elikhulu lokushisa kusuka kusixazululo sokunamathela kanye nomoya ozungezile.
Njengamanje, amayunithi amaningi e-laminating emishinini eyinhlanganisela avulekile futhi afakwe amadivaysi okukhipha asendaweni, ngakho-ke inani elikhulu le-solvent lizophuma ku-adhesive disc kanye nomgqomo.Ngokombono, ngemva kwesikhathi sokusebenza, izinga lokushisa le-glue esebenzayo ethreyini yeglue ngezinye izikhathi lingase libe ngaphezu kuka-10 ° C ngaphansi kwezinga lokushisa elizungezile!
Njengoba izinga lokushisa leglue liyancipha kancane kancane, i-viscosity yeglue izokhula kancane kancane.
Ngakho-ke, ukusebenza kokulinganisa kwezinamatheliso ezisekelwe ku-solvent empeleni kuya ngokuya iwohloka ngokwandisa isikhathi sokusebenza kwemishini.
Ngamanye amazwi, uma ufuna ukugcina ukuzinza kwe-adhesive leveling esekelwe ku-solvent, kufanele usebenzise isilawuli se-viscosity noma ezinye izindlela ezifanayo ukuze ugcine i-viscosity enamathelayo izinzile kuyo yonke inqubo yesicelo.
3.Izinkomba zokuhlola zemiphumela elungile yokulinganisa iglue
Ukuhlolwa komphumela wokulinganisa weglue kufanele kube isici somkhiqizo oyinhlanganisela esigabeni esithile, futhi umphumela wokulinganisa weglue ubhekisela kumphumela otholwe ngemva kokusetshenziswa kweglue.Njengoba nje “ijubane eliphezulu eliklanyelwe” lemoto linjalo. isici somkhiqizo, isivinini sangempela sokushayela semoto emgwaqeni ngaphansi kwezimo ezithile singomunye umphumela.
Ukulinganisa okuhle kweglue kuyisimo esiyisisekelo sokuthola imiphumela emihle yokulevelitha.Kodwa-ke, ukusebenza kahle kweglue kungase kungabi nemiphumela emihle yokulinganisa iglue, futhi noma ingcina ingasebenzi kahle (okungukuthi, i-viscosity ephezulu), imiphumela emihle yokulinganisa iglue isengatholakala ezimeni ezithile.
4.Ukuhlobana phakathi kwemiphumela yokulinganisa iglue kanye nokwenzeka "kwamachashazi amhlophe" kanye "namabhamuza"
“Amachashazi amhlophe, amabhamuza, nokungafihli” okungekuhle yimiphumela embalwa engathandeki emikhiqizweni eyinhlanganisela.Kunezizathu eziningi zalezi zinkinga ezingenhla, futhi izinga eliphansi leglue kungenye yazo.Kodwa-ke, isizathu sokungalinganisi kahle kweglue akubangelwa nje kuphela izinga eliphansi leglue!
Umphumela ongemuhle wokulinganisa weglue ungase ungaholeli ngempela “emabala amhlophe” noma “amabhamuza”, kodwa ungathinta ukubonakala kwefilimu eyinhlanganisela.Uma i-micro flatness ye-substrate ehlanganisiwe impofu, ngisho noma umphumela wokulinganisa we-adhesive muhle, kusengenzeka "amabala amhlophe nama-bubbles".
Isikhathi sokuthumela: Jan-17-2024