Isifinyezo: Lesi sihloko sihlaziya ngemininingwane mayelana nethonya lekhwalithi yempahla yokulengisa yento yokunamathisela enkambisweni yokulamina. Ngaphezu kwalokhu, sikhuluma ngokuthi esikhundleni sokwahlulela ukusebenza kokulengisa ngokwahlulela ukuthi kukhona yini'amabala amhlophe' noma 'amabhamuza', ukucaca kwemikhiqizo elaminethiwe okungaba yindinganiso yokuhlola yokusebenza kokulevelisha ku-adhesive.
1. Inkinga Yebhamuza Nokulinganiseka Kweglue
Amabala amhlophe, amabhamuza, kanye nokungacaci kahle kuyizinkinga ezivamile zekhwalithi yokubukeka ekucutshungulweni kwezinto ezihlanganisiwe. Ezimweni eziningi, abaprosesa bezinto ezihlanganisiwe bathi lezi zinkinga ezingenhla zibangelwa ukungalingani kahle kwe-glue!
1.1 Le glue akuyona leyo glue
Abacubungula izinto ezihlanganisiwe bangabuyisela imiphongolo yokunamathisela engavulwanga nengasetshenzisiwe kubaphakeli ngokusekelwe ekwahlulelweni kokungaguquki kahle kokunamathisela, noma bafake izikhalazo noma izicelo kubaphakeli.
Kufanele kuqashelwe ukuthi iglue ebhekwa njengesebenza kahle ekulinganiseni "iyisisombululo sokusebenza kweglue" esilungisiwe/esixutshwe ngamakhasimende futhi sinobuthi obuthile. Iglue ebuyisiwe yibhakede lokuqala leglue elingakavulwa.
Lawa mabhakede amabili “eglue” ayimibono nezinto ezihlukene ngokuphelele!
1.2 Izinkomba zokuhlola zokulinganisa iglue
Izinkomba zobuchwepheshe zokuhlola ukusebenza kokulinganisa kwe-glue kufanele kube ukujiya kanye nokucindezeleka kokumanzisa ubuso. Noma kunalokho, "ukugeleza kwe-glue" kuyinhlanganisela "yokugeleza kwe-glue" kanye "nokumanzisa kwe-glue".
Emazingeni okushisa egumbi, ukucindezeleka kokumanzisa ubuso kwe-ethyl acetate kungaba ngu-26mN/m.
Ukuhlushwa kokuqala kwemiphongolo (okuqukethwe okuqinile) kwezinamathiseli ze-polyurethane ezisekelwe ku-solvent ezisetshenziswa emkhakheni wokucubungula izinto ezihlanganisiwe ngokuvamile kuphakathi kuka-50% -80%. Ngaphambi kokusebenzisa ukucubungula okuhlanganisiwe, izinamathiseli ezishiwo ngenhla kudingeka zihlungwe zibe yizinga lokusebenza elicishe libe ngu-20% -45%.
Ngenxa yokuthi ingxenye eyinhloko esixazululweni sokusebenza esinamathelayo esixutshiwe yi-ethyl acetate, ukucindezeleka kokumanzisa ubuso kwesisombululo sokusebenza esinamathelayo esixutshiwe kuzoba seduze nokucindezeleka kokumanzisa ubuso kwe-ethyl acetate uqobo.
Ngakho-ke, uma nje ukucindezelwa kokumanzisa komhlaba kwe-substrate ehlanganisiwe esetshenziswayo kuhlangabezana nezidingo eziyisisekelo zokucubungula okuhlanganisiwe, ukumanzisa kwe-glue kuzoba kuhle kakhulu!
Ukuhlolwa kokugeleza kweglue kuyi-viscosity. Emkhakheni wokucubungula okuhlanganisiwe, lokho okubizwa ngokuthi i-viscosity (okungukuthi i-viscosity yokusebenza) kubhekisela esikhathini ngemizuzwana lapho uketshezi lokusebenza lweglue luzwa khona lapho luphuma endebeni ye-viscosity, olulinganiswa kusetshenziswa imodeli ethile yendebe ye-viscosity. Kungacatshangwa ukuthi uketshezi olusebenzayo lweglue olulungiselelwe kusuka ezinhlotsheni ezahlukene zeglue yamabhakede yokuqala lune-"viscosity yokusebenza" efanayo, kanti "uketshezi olusebenzayo" lwayo lune-"glue fluidity" efanayo!
Ngaphansi kwezinye izimo ezingashintshiwe, uma “i-viscosity yokusebenza” “yoketshezi olusebenzayo” olulungiselelwe nge-glue yohlobo olufanayo lohlaka iphansi, kulapho “i-fluidity yayo yokunamathela” iba ngcono khona!
Ngokuqondile, ngamanani amaningana ahlukene ezinamathiselo, uma inani le-viscosity lesisombululo sokusebenza esixutshiwe liyimizuzwana eyi-15, khona-ke isisombululo sokusebenza esilungiselelwe yilawa mabanga ezinamathiselo sinokulingana okufanayo kwe-glue.
1.3 Isici sokulinganisa i-glue siyisici soketshezi olusebenzayo lwe-glue
Amanye ama-alcohol awakhi uketshezi oluqinile lapho umgqomo usanda kuvulwa, kodwa kunalokho akha i-projectile efana nejeli engenakho ukugeleza. Adinga ukuncibilikiswa futhi ancibilikiswe ngenani elifanele le-organic solvent ukuze kutholakale ukuhlushwa okufiselekayo kanye nokuthambekela kweglue.
Kusobala ukuthi ukusebenza kokulinganisa kweglue kuwukuhlolwa kwesisombululo sokusebenza esakhiwe "esilinganisweni sokusebenza" esithile, kunokuba ukuhlolwa kweglue yokuqala yebhareli engaxutshwe.
Ngakho-ke, akulungile ukuthi ukunamathela kahle kweglue kubangelwa izici ezivamile zohlobo oluthile lweglue yamabhakede yokuqala!
2. Izinto ezithinta ukuhleleka kwe-glue
Kodwa-ke, ngesisombululo sokusebenza se-glue esixutshiwe, kukhona umehluko ngempela ezingeni lamanzi anamathelayo!
Njengoba kushiwo ngaphambili, izinkomba eziyinhloko zokuhlola ukusebenza kokulinganisa koketshezi lokusebenza olunamathelayo ukucindezeleka kokumanzisa ubuso kanye nokuthamba kokusebenza. Isibonakaliso sokucindezeleka kokumanzisa ubuso asibonisi izinguquko ezibalulekile ngaphakathi kobubanzi bokuhlushwa kokusebenza okuvamile. Ngakho-ke, umongo wokulinganisa okunamathelayo okungekuhle ukuthi ngesikhathi senqubo yokufaka, ukuthamba kwe-adhesive kuyanda ngendlela engavamile ngenxa yezici ezithile, okuholela ekunciphiseni ukusebenza kwayo kokulinganisa!
Yiziphi izinto ezingabangela ushintsho ekuqineni kweglue ngesikhathi sokusetshenziswa kwayo?
Kunezici ezimbili eziyinhloko ezingabangela ushintsho ekuqineni kweglue, enye izinga lokushisa leglue, kodwa ukujiya kweglue.
Ngaphansi kwezimo ezivamile, i-viscosity yoketshezi iyancipha ngokushisa okwandayo.
Ezincwadini zomsebenzisi ezinikezwa izinkampani ezahlukene zokunamathela, amanani e-viscosity yesisombululo sokunamathela (ngaphambi nangemva kokuncibilikisa) alinganiswa kusetshenziswa i-viscometer ejikelezayo noma indebe ye-viscosity ekushiseni okuwuketshezi okungu-20 ° C noma 25 ° C (okungukuthi izinga lokushisa lesisombululo sokunamathela ngokwaso) avame ukuboniswa.
Ngasohlangothini lweklayenti, uma izinga lokushisa lokugcina lebhakede lokuqala leglue kanye ne-diluent (i-ethyl acetate) liphezulu noma liphansi kune-20 ° C noma 25 ° C, izinga lokushisa leglue elilungisiwe nalo lizoba phezulu noma liphansi kune-20 ° C noma 25 ° C. Ngokwemvelo, inani langempela le-viscosity leglue elilungisiwe nalo lizoba ngaphansi kunenani le-viscosity eliboniswe encwadini yemiyalelo. Ebusika, izinga lokushisa leglue elilungisiwe lingaba ngaphansi kune-5 ° C, kanti ehlobo, izinga lokushisa leglue elilungisiwe lingaba ngaphezu kwe-30 ° C!
Kufanele kuqashelwe ukuthi i-ethyl acetate iyisinyibilikisi sezinto eziphilayo esiguquguqukayo kakhulu. Ngesikhathi senqubo yokuguquguquka kwe-ethyl acetate, izomunca ukushisa okuningi okuvela esixazululweni sokunamathela kanye nomoya ozungezile.
Njengamanje, amayunithi amaningi okunamathisela emishinini ehlanganisiwe avulekile futhi ahlonyiswe ngamadivayisi okukhipha umoya endawo, ngakho-ke inani elikhulu le-solvent lizonyamalala lisuka kudiski yokunamathela kanye nomgqomo. Ngokusho kokuqashelwa, ngemva kwesikhathi sokusebenza, izinga lokushisa loketshezi olusebenzayo lweglue kuthreyi yeglue ngezinye izikhathi lingase libe ngaphansi kuka-10 ° C kunezinga lokushisa elizungezile!
Njengoba izinga lokushisa leglue lincipha kancane kancane, ubulukhuni beglue buzokhula kancane kancane.
Ngakho-ke, ukusebenza kokulinganisa kwezinamathelisi ezisekelwe ku-solvent empeleni kuyawohloka kancane kancane njengoba isikhathi sokusebenza kwemishini sanda.
Ngamanye amazwi, uma ufuna ukugcina ukuzinza kokulinganisa okunamathelayo okusekelwe ku-solvent, kufanele usebenzise isilawuli se-viscosity noma ezinye izindlela ezifanayo ukugcina i-viscosity yokunamathela izinzile kuyo yonke inqubo yokufaka.
3. Izinkomba zokuhlola imiphumela efanele yokulinganisa iglue
Ukuhlolwa komphumela wokulinganisa weglue kufanele kube yisici somkhiqizo ohlanganisiwe esigabeni esithile, futhi umphumela wokulinganisa weglue ubhekisela kumphumela otholwe ngemuva kokusetshenziswa kweglue. Njengoba nje "isivinini esiphezulu esiklanywe kahle" semoto siyisici somkhiqizo, isivinini sangempela sokushayela imoto emgwaqweni ngaphansi kwezimo ezithile singomunye umphumela.
Ukulinganisa kahle iglue kuyisimo esiyisisekelo sokuthola imiphumela emihle yokulinganisa. Kodwa-ke, ukusebenza kahle kweglue kungase kungabangela imiphumela emihle yokulinganisa iglue, futhi noma iglue ingasebenzi kahle (okungukuthi i-viscosity ephezulu), imiphumela emihle yokulinganisa iglue isengatholakala ezimweni ezithile.
4. Ubudlelwano phakathi kwemiphumela yokulinganisa iglu kanye nezenzakalo “zamabala amhlophe” kanye “namabhamuza”
“Amabala amhlophe, amabhamuza, kanye nokucaca” okubi kuyimiphumela eminingana engathandeki emikhiqizweni ehlanganisiwe. Kunezizathu eziningi zezinkinga ezingenhla, futhi ukuhlanzeka kabi kweglue kungenye yazo. Kodwa-ke, isizathu sokuhlanzeka kabi kweglue akubangelwa nje ukuhlanzeka kabi kweglue!
Umphumela wokungalingani kahle kweglue ungase ungabi “namabala amhlophe” noma “amabhamuza”, kodwa ungathinta ukucaca kwefilimu ehlanganisiwe. Uma ukuthamba okuncane kwe-substrate ehlanganisiwe kukubi, noma ngabe umphumela wokungalingani weglue umuhle, kusengenzeka ukuthi kube “namabala amhlophe namabhamuza”.
Isikhathi sokuthunyelwe: Jan-17-2024