Enye yezinto ezinhle kakhulu zokubumba umjovo i-polyethylene.Nokho, kunomehluko othile emiphumeleni lapho kusetshenziswa i-LDPE ne-HDPE kule nqubo.Lokhu kungenxa yezici ezinhle kakhulu ze-polyethylene ezenza kube lula ukuthola imiphumela engcono kakhulu ngemuva kokubumba umjovo.
Sibone umkhuba okhulayo lapho abakhiqizi abaningi basebenzisa ukubumba komjovo we-PE, futhi kunemibuzo.Siyabona ukuthi abantu abaningi abaqiniseki ngomjovo wokubumba i-polyethylene.
Ngakho-ke, bazama izinto ezihlukene futhi bathole imiphumela engaguquki.Ukusiza abafundi bethu, sihlonze ezinye zezinto ezibalulekile okufanele zicatshangelwe lapho ujova i-polyethylene esikhunjeni.
Yini Engenziwa Ngokubumba Umjovo I-polyethylene?
Ngokuvamile, i-polyethylene inhle kakhulu ekukhiqizeni amashidi epulasitiki.Lawa mashidi angaphinde asetshenziswe ukuze akhe inhlobonhlobo yemikhiqizo.Imikhiqizo eminingi kangaka itholwa ngale nqubo, yingakho isidumile.
Ngokufanayo, ngokubumba i-polyethylene, sibone abakhiqizi bethuthukisa amafilimu epulasitiki angcono kakhulu atholakalayo emakethe njengamanje.Le mikhiqizo ingeyekhwalithi ephezulu.
Kodwa-ke, kufanele siqaphele ukuthi ikhwalithi yemikhiqizo ye-PE incike kunqubo yokubumba umjovo.Kungakho sicabange ukuthi kudingekile ukugqamisa izici ezingaba nomthelela kumphumela.
Ukwakhiwa Kwekhemikhali kwePolyethylene
Izakhiwo eziphezulu ezenza ukubumba komjovo we-polyethylene kuphumelele zixhunyaniswa nokwakheka kwamakhemikhali awo.I-polymer inezici ezivelele ze-thermodynamic.
Lokhu kusho ukuthi ingakwazi ukumelana namazinga okushisa aphezulu ngaphandle kokuwohloka.Ukubekezelela okushisayo okuphezulu kwe-PE kuyenza ibe phakathi kwezinto ezihamba phambili zokubumba umjovo.
Uma ucabangela ukuthi ukugcina kokubili ipulasitiki encibilikisiwe kanye nesikhunta kushisa kuyadingeka, lokhu kuyisici esihle futhi kuqinisekisa imiphumela engcono kakhulu yokubumba umjovo.
I-PE Elasticity
Esinye isizathu esenza ukubunjwa komjovo we-polyethylene kuwumbono omuhle kakhulu ukuthi impahla inezinga eliphansi lokunwebeka.Lesi isici esihle ngoba sisiza ukuvimbela izimo ezifana nezimpawu zokucwila ezingonakalisa umkhiqizo wepulasitiki owenziwe ngokubumba umjovo.
Ukunwebeka kwale nto kusiza ukuhlola izinga lokuncipha ngenkathi iphola ngemva kokubumba umjovo.Ngakho-ke, akunakwenzeka ukuthi kuzoba nezindawo ezingalingani esikhunjeni.
Kodwa-ke, asibheki ukunwebeka njengento yokugcina enquma umphumela wokubumba umjovo we-polyethylene.Kodwa kufanelekile ukusho.
Imikhiqizo eyenziwe ngomjovo wokubumba i-polyethylene
Sithole uhlu olude lwemikhiqizo eyakhiwe futhi manje ethengiswa emakethe.Le mikhiqizo ivame uku-odwa ngobuningi, okungeyona inkinga uma kucatshangelwa ukuthi i-polyethylene yokubumba umjovo iyindlela engcono kakhulu yemikhiqizo yepulasitiki ekhiqiza ngobuningi.
Njengamanje, siyazi ukuthi le nqubo yokwenza ipulasitiki isetshenziselwa ukukhiqiza imikhiqizo efana namathoyizi, izibambo zamathuluzi, izigqoko zamabhodlela.Le mikhiqizo yenziwe ngemishini yokuphepha ukuze isetshenziswe ezimbonini kanye nazo zonke izinhlobo zemigqomo yokuqoqwa kukadoti.Siyazi ukuthi uzovuma ukuthi le mikhiqizo yepulasitiki ihlala isikhathi eside futhi iphephile kubasebenzisi.
Izinto ezithonya umjovo wokubumba i-polyethylene
Izinga lokushisa elincibilikayo
Kubalulekile ukuqonda ukuthi impahla incibilika kanjani futhi ngasiphi izinga lokushisa.Ukwazi izinga lokushisa elincibilikayo eliqondile kuyindlela engcono kakhulu yokwenza izinhlelo ezifanele zokuqinisa.
Ama-polymers ngokuvamile ayancibilika emazingeni okushisa ahlukene, ikakhulukazi lapho lezi zinto zihlukaniswa njenge-thermoplastics.Kulesi simo, siyazi ukuthi i-PE ngeke ihlehlise ibe yifomu legesi ngaphansi kokushisa.Ngakho-ke, kubalulekile ukukhomba izinga lokushisa uma lisebuketshezini.
Siqinisekisile ukuthi i-PE inezinga lokushisa eliphansi lokuncibilika uma liqhathaniswa namanye ama-polymers amaningi.Lokhu kuyinzuzo ngoba ngenkathi uyiguqulela esimweni soketshezi, ngeke kube khona ukuwohloka okunomthelela omubi emvelweni.
Ukwengeza, isimo esiphansi sokuncibilika sivumela i-polyethylene ewuketshezi ukuthi igeleze esikhunjeni ngaphandle kwezinkinga.Ukube amanye ama-polymer amaningi bekulula ukusebenza nawo, imboni ibingaba indawo ejabulisayo kubo bonke abakhiqizi.
Izici zesikhunta
Kubalulekile futhi ukusebenzisa isikhunta esifanele ukubumba umjovo.Isikhunta sinquma izici zomkhiqizo.Futhi kunezinhlobo eziningi zesikhunta.
Empeleni, kufanele ugxile ekusebenziseni isikhunta somjovo esinokubekezelela ukushisa okuphezulu.Kungenzeka futhi uku-oda izibunjwa zakho ezenziwe ngokwezifiso ngokuya ngemininingwane yakho.
Uma kunjalo, unganquma ngezici ezithile okufanele isikhunta sakho sibe nazo ngaphambi kokusetshenziswa.
Sicela uqaphele ukuthi kungase kudingeke usebenzise isikhunta esikhethekile kuye nge-PE oyisebenzisayo.Lokhu kusho ukuthi uma iphrojekthi yakho ibandakanya i-HDPE noma i-LDPE, inqubo yokubumba i-polyethylene yomjovo izohluka.
Ubukhulu bomkhiqizo wepulasitiki
Sikhulume ngemikhiqizo ehlukene engenziwa ngokubumba umjovo we-PE.Uma uyayazi le mikhiqizo, uzovuma ukuthi inobukhulu obuhlukahlukene.
Lokho kusho ukuthi inqubo yokubumba umjovo komunye nomunye wale mikhiqizo ibihlukile.Unalokho engqondweni, kufanele usungule ukushuba okuhlongozwayo komkhiqizo ohlela ukuwenza.
Lolu lwazi luzokusiza ukuthi unqume lapho ukhetha isikhunta somsebenzi.Futhi, ungakwazi ukwazi ukuthi kungcono yini ukusebenzisa i-LDPE noma i-HDPE ngoba womabili amamaki e-polyethylene anezakhiwo ezahlukene.
Umshini wokubumba umjovo
Emakethe, uzothola izinhlobo ezahlukene zemishini yokubumba umjovo.Kodwa ukukhetha okungcono kakhulu kungaba yinkinga uma ungazi okuningi ngale mishini.
Ngaphambi kokuthenga umshini wokubumba umjovo, amanye amaphuzu abalulekile afaka ithoni, usayizi wokudubula, i-ejector stroke, kanye nesilinganiso se-tie bar space.Lezi zici zingathonya inqubo yokubumba.
Ngakho-ke, kufanele ukhulume nonjiniyela abanolwazi.Buza ngale mishini futhi uthole izincomo ezifanele zohlobo lomjovo ofuna ukuwenza.
Iqiniso lokuthi i-polyethylene ingena esimweni sayo soketshezi ngaphansi kokushisa yingakho izohlale idingeka ekubunjweni komjovo.Ngakho-ke, ukuthola imiphumela engcono kakhulu kuncike ekulungiseleleni kwakho kanye nolwazi lwakho.
Sicela uzizwe ukhululekile ukusebenzisa ulwazi kulokhu okuthunyelwe ukuze uqhubeke nokwenza imikhiqizo yepulasitiki edingeka kakhulu evela kwa-PE.Ukuze uthole ulwazi olwengeziwe noma imibuzo, sicela usithinte.
Isikhathi sokuthumela: Nov-18-2021