Kungani kuhlale kunomehluko wombala phakathi kwesampula yendwangu kanye nesampula enkulu?
Imboni yokudaya ngokuvamile yenza amasampula elabhorethri, bese ikhulisa amasampula endaweni yokusebenzela ngokwamasampuli.Izizathu zokuqedwa kombala okungahambisani kanye nomehluko wombala phakathi kwamasampuli namasampuli amakhulu kungase kube kanje:
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1. Umbala wekotini ohlukile
Ngaphambi kokufakwa kombala, indwangu kakotini yemvelo kufanele ihlanzwe noma isuswe amafutha, futhi isampula encane ingase ingelashwa kusengaphambili, noma indlela yokucubungula yesampula encane ingase ihluke ekukhiqizeni isampula enkulu endaweni yokusebenzela.Umswakama wendwangu yemvelo kakotini uhlukile, futhi okuqukethwe komswakama okuhlukile kwesampula encane kunomthelela omkhulu.Ngenxa yokuthi umswakama uhlukile, ukukala nakho kuhlukile.Ngenxa yalesi sizathu, kuyadingeka ukuthi indwangu kakotini yemvelo yesampula kufanele ifane ncamashi nendwangu kakotini yemvelo ekhiqizwa endaweni yokusebenzela.
2. Umehluko wodayi
Nakuba odayi abasetshenziselwa isampula encane kanye nodayi osetshenziselwa isampula enkulu beyizinhlobonhlobo namandla afanayo, izinombolo zenqwaba ezihlukene noma ukukala okungalungile kwesampula encane kungabangela umehluko phakathi kwesampula encane nesampula enkulu.Kungenzeka futhi ukuthi odayi abasetshenziswa ekukhiqizeni amasampula amakhulu baye bahlanganiswa futhi baswakama, kanti abanye odayi abazinzile, okuholela ekwehleni kwamandla.
3. I-pH yokugeza udayi ihlukile
Ngokuvamile, kunembile kakhulu ukubamba ivelu ye-pH yebhavu likadayi kumasampuli amancane, kuyilapho inani le-pH lamasampuli amakhulu alizinzile noma asikho isibhafa se-acid-base esingeziwe ngesikhathi sokukhiqizwa kwamasampuli amakhulu.Ngenxa ye-alkalinity yesitimu ngesikhathi sombala, inani le-pH liyakhula ngesikhathi sokukhiqizwa kwamasampula amakhulu, futhi abanye odayi abahlakazayo Njengeqembu le-ester, iqembu le-amido, iqembu le-cyano, njll. bafakwa nge-hydrolyzed ngaphansi kwezimo ze-alkaline zokushisa okuphezulu.Kukhona futhi abanye odayi amaqembu abo e-carboxyl angenziwa ionized ngaphansi kwezimo ze-alkali, ukuncibilika kwamanzi kuyanda, futhi izinga lokudaya liyancishiswa.Lapho inani le-pH lamadayi amaningi ahlakazekayo lingu-5.5-6, ukuqedwa kombala kujwayelekile futhi kuzinzile, futhi izinga lokudaya nalo liphakeme.Kodwa-ke, lapho inani le-pH likhuphuka, umbala uyashintsha.Okufana nokuhlakaza kanye ne-S-2BL emnyama, hlakaza i-HGL eluhlaza okwesibhakabhaka okumnyama, hlakaza ompunga M kanye nabanye odayi lapho inani le-pH lingaphezu kuka-7, umbala uyashintsha ngokusobala.Kwesinye isikhathi indwangu kakotini enombala wemvelo ayigezwanga ngokuphelele futhi i-alkaline ngemuva kokwelashwa kwangaphambili, futhi inani le-pH lokugeza lokudaya liyakhula ngesikhathi sombala, okuthinta ukuphela kombala.
Abanye, ingabe ukwelashwa kwangaphambili kwendwangu kakotini yemvelo kufakwe ngaphambili?
Uma isampula enkulu yombala wendwangu kakotini yakhiwe ngaphambili, isampula encane yombala wendwangu kakotini ayizange imise okwengaphambili, ngisho nesampula enkulu kanye nesampula encane kuye kwabunjwa ngaphambili, futhi izinga lokushisa lokusetha lihlukile, elingase futhi bangela ukumuncwa kombala ohlukene.
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4. Umthelela wesilinganiso sotshwala
Esivivinyweni esincane sesampula, isilinganiso sokugeza sivame ukuba sikhulu (1:25-40), kuyilapho isilinganiso esikhulu sesampula sokugeza siyahlukahluka kuye ngezinto zokusebenza, ngokuvamile ngu-1:8-15.Abanye odayi abahlakazayo abancike kancane esilinganisweni sokugeza, futhi abanye bancike kakhulu, ukuze umehluko wombala ubangelwa izilinganiso zokugeza ezihlukene zesampula encane kanye nesampula enkulu.
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5. Imiphumela yokucubungula ngemuva kokucubungula
Ukucubungula ngemuva kungenye yezizathu ezithinta umehluko wombala.Imaphakathi kakhulu futhi imnyama.Uma ungayibuyisi futhi uyihlanze, ngaphezu kokuba khona kombala ontantayo, kungase futhi kuthinte isiphetho sombala futhi kukhiqize umehluko othile wombala.Ngakho-ke, ukuhlanzwa kokunciphisa kufanele kuhambisane nesampula encane kanye nesampula enkulu.
6. Umphumela wokusetha ukushisa
Odayi abahlakazayo bangahlukaniswa ngohlobo lokushisa eliphezulu, uhlobo lokushisa oluphakathi nendawo kanye nohlobo lokushisa oluphansi.Uhlobo olufanayo lwamadayi kufanele lukhethwe lapho kufanelana nombala.Esimeni sohlobo lokushisa oluphezulu kanye nohlobo lokushisa oluphansi oluhambisana nombala, izinga lokushisa lokusetha akufanele libe phezulu kakhulu ngesikhathi sokusetha ukushisa, ukuze kugwenywe izinga lokushisa elidlulele, okuzobangela ukuthi abanye odayi babonakale bephansi futhi kuthinte isiphetho sombala, okuholela ekuhlukeni kombala..Izidingo zezimo zokusetha zesampula encane kanye nesampula enkulu ziyefana ngokuyisisekelo.Ngenxa yokuthi ukwelapha kusethiwe noma cha, izimo zokusethwa (izinga lokushisa) zinethonya elikhulu ekumunceni kombala we-polyester (lapho izinga lokumiswa likhulu, ukudaya kuyancipha, ngakho-ke indwangu encane yesampula kufanele ihambisane nenkulu. isampula (okungukuthi, sebenzisa ngaphambi kokukhiqiza. Isifaniso somkhiqizo esiqedwe semi-workshop).
Isikhathi sokuthumela: Sep-24-2022