1 Isingeniso
Kusukela kwavela amadayi asebenzayo, i-sodium alginate (SA) ibilokhu iyinhlama eyinhloko yokunyathelisa udayi osebenzayo ezindwangu zikakotini.
Ukusebenzisa izinhlobo ezintathu zeama-ether e-celluloseI-CMC, i-HEC kanye ne-HECMC ezilungiselelwe eSahlukweni 3 njenge-paste yokuqala, zasetshenziswa ekuphrinteni ngodayi ophendulayo ngokulandelana.
imbali. Izakhiwo eziyisisekelo kanye nezakhiwo zokunyathelisa zama-paste amathathu zahlolwa futhi zaqhathaniswa ne-SA, kanti imicu emithathu yahlolwa.
Izakhiwo zokuphrinta zama-ether e-vitamin.
2 Ingxenye yokuhlola
Izinto zokuhlola kanye nemithi
Izinto zokusetshenziswa kanye nemithi esetshenziswe esivivinyweni. Phakathi kwazo, izindwangu zokuphrinta udayi ezisabelayo bezilokhu ziklanywa futhi zihlungwa, njll.
Uchungechunge lwendwangu ethambile yekotini elungisiwe kusengaphambili, ukujiya okungu-60/10cm×50/10cm, ukuthunga intambo okungu-21tex×21tex.
Ukulungiswa kokunamathisela okuprintiwe kanye nokunamathisela kombala
Ukulungiswa kokunamathisela okuprintiwe
Ngezinhlayiya ezine zokuqala ze-SA, CMC, HEC kanye ne-HECMC, ngokwesilinganiso sokuqukethwe okuqinile okuhlukene, ngaphansi kwezimo zokuxubha
Bese, engeza kancane kancane i-paste emanzini, qhubeka uvuselela isikhathi esithile, kuze kube yilapho i-paste yokuqala ifana futhi icacile, yeka ukuvuselela, bese uyibeka esitovini.
Engilazini, yiyeke ime ubusuku bonke.
Ukulungiswa kokunamathisela okuprintiwe
Okokuqala ncibilikisa i-urea kanye nosawoti ovimbela ukudaya i-S ngamanzi amancane, bese ufaka amadayi asebenzayo ancibilikisiwe emanzini, ufudumale bese uxuba ngamanzi afudumele.
Ngemva kokuxubha isikhathi esithile, engeza udayi ohlungiwe ocwengekile ku-paste yokuqala bese uxuba ngokulinganayo. Faka uncibilikise uze uqale ukuphrinta
I-sodium bicarbonate enhle. Ifomula ye-color paste yile: idayi ephendulayo engu-3%, i-original paste engu-80% (okuqukethwe okuqinile okungu-3%), i-sodium bicarbonate engu-3%,
Usawoti ovimbela ukungcola u-S u-2%, i-urea i-5%, bese kuthi ekugcineni amanzi afakwe ku-100%.
inqubo yokuphrinta
Inqubo yokuphrinta udayi ophendulayo ngendwangu kakotini: ukulungiswa kokunamathisela kokuphrinta → ukuphrinta kwebha yamagnetic (ekushiseni kwegumbi kanye nengcindezi, ukuphrinta izikhathi ezi-3) → ukomisa (105℃, 10min) → ukufutha (105±2℃, 10min) → ukuwasha ngamanzi abandayo → Ukugeza okushisayo ngamanzi (80℃) → ukubilisa insipho (izingcezu zensipho 3g/L,
100℃, 10min) → ukuwasha ngamanzi ashisayo (80℃) → ukuwasha ngamanzi abandayo → ukomisa (60℃).
Ukuhlolwa kokusebenza okuyisisekelo kokunamathisela kwasekuqaleni
Ukuhlolwa kwesilinganiso sokunamathisela
Kwalungiswa ama-paste amane okuqala e-SA, CMC, HEC kanye ne-HECMC anokuqukethwe okuqinile okuhlukene, kwathi iBrookfield DV-Ⅱ
Ukuqina kwe-paste ngayinye enokuqukethwe okuqinile okuhlukile kuhlolwe nge-viscometer, futhi ijika lokushintsha kwe-viscosity ngokuhlushwa kwakuyizinga lokwakheka kwe-paste ye-paste.
ijika.
Inkomba ye-Rheology kanye ne-Printing Viscosity
I-Rheology: I-Rheometer yokujikeleza ye-MCR301 yasetshenziswa ukukala i-viscosity (η) ye-paste yokuqala ngamazinga ahlukene okucheba.
Ijika lokushintsha kwesilinganiso sokucheba yijika le-rheological.
Inkomba ye-viscosity yokuphrinta: Inkomba ye-viscosity yokuphrinta ivezwa yi-PVI, i-PVI = η60/η6, lapho i-η60 kanye ne-η6 ngokulandelana
I-viscosity ye-paste yokuqala elinganiswe yi-Brookfield DV-II viscometer ngesivinini esifanayo se-rotor esingu-60r/min kanye no-6r/min.
ukuhlolwa kokugcinwa kwamanzi
Kala u-25g we-paste yokuqala uyifake ebhodleleni elingu-80mL, bese ufaka kancane u-25mL wamanzi acwengekile ngenkathi uvuselela ukwenza ingxube.
Ixutshwe ngokulinganayo. Thatha iphepha lokuhlunga elinobubanzi obungu-10cm × 1cm ubude, bese uphawula umugqa wesikali ohlangothini olulodwa lwephepha lokuhlunga, bese ufaka umugqa ophawuliwe ku-paste, ukuze umugqa wesikali uhambisane nobuso be-paste, bese isikhathi siqalwa ngemva kokufakwa kwephepha lokuhlunga, bese liqoshwa ephepheni lokuhlunga ngemva kwemizuzu engama-30.
Ukuphakama lapho umswakama ukhuphukela khona.
4 Ukuhlolwa Kokuhambisana Kwamakhemikhali
Ukuze uthole ukuphrinta okusebenzayo kodayi, hlola ukuhambisana kwe-paste yokuqala kanye namanye amadayi angeziwe ku-paste yokuphrinta,
Okusho ukuthi, ukuhambisana phakathi kwe-paste yokuqala kanye nezingxenye ezintathu (i-urea, i-sodium bicarbonate kanye nosawoti wokulwa nokudaya i-S), izinyathelo zokuhlola ezithile zimi kanje:
(1) Ukuze kuhlolwe ubungako bokunamathela okubhekiselwe ku-paste yokuqala, engeza u-25mL wamanzi acwengekile ku-50g we-paste yokuqala yokunyathelisa, uvuselele ngokulinganayo, bese ulinganisa ubungako bokunamathela.
Inani le-viscosity elitholiwe lisetshenziswa njenge-viscosity ebhekisela kuyo.
(2) Ukuze uhlole ukujiya kwe-paste yokuqala ngemuva kokufaka izithako ezahlukahlukene (i-urea, i-sodium bicarbonate kanye nosawoti ovimbela ukudaya i-S), faka u-15% olungiselelwe.
Isixazululo se-Urea (ingxenye yesisindo), isisombululo se-S esingu-3% esilwa nokungcola (ingxenye yesisindo) kanye nesisombululo se-sodium bicarbonate esingu-6% (ingxenye yesisindo)
Ama-25mL afakwe ku-50g we-paste yokuqala ngokulandelana, axutshwa ngokulinganayo abekwe isikhathi esithile, bese kulinganiswa i-viscosity ye-paste yokuqala. Ekugcineni, i-viscosity izolinganiswa
Amanani e-viscosity aqhathaniswa ne-viscosity ebhekiselayo, futhi iphesenti lokushintsha kwe-viscosity kwe-paste yokuqala ngaphambi nangemva kokufaka udayi ngamunye nezinto zamakhemikhali labalwa.
Ukuhlolwa Kokuzinza Kwesitoreji
Gcina i-paste yokuqala ekamelweni lokushisa (25°C) ngaphansi kwengcindezi evamile izinsuku eziyisithupha, ulinganise i-viscosity ye-paste yokuqala nsuku zonke ngaphansi kwezimo ezifanayo, bese ubala i-viscosity ye-paste yokuqala ngemva kwezinsuku eziyi-6 uma kuqhathaniswa ne-viscosity elinganiswe ngosuku lokuqala ngefomula 4-(1). Izinga lokusabalala kwe-paste ngayinye yokuqala lihlolwa ngezinga lokusabalala njengenkomba
Ukuqina kwesitoreji, lapho ukuhlakazeka kuncane, kungcono ukuqina kwesitoreji se-paste yokuqala.
Ukuhlolwa kwesilinganiso sokushelela
Okokuqala yomisa indwangu kakotini ukuze inyatheliswe ibe yisisindo esingaguquki, uyikale bese uyiqopha njenge-mA; bese uyomisa indwangu kakotini ngemva kokuyiphrinta ibe yisisindo esingaguquki, uyikale bese uyiqopha.
yi-mB; ekugcineni, indwangu kakotini ephrintiwe ngemva kokuyipheka ngesitimu, ukuyihlikihla kanye nokuwasha iyomiswa ibe nesisindo esingaguquki, ikalwe futhi iqoshwe njenge-mC
Ukuhlolwa kwesandla
Okokuqala, izindwangu zikakotini ngaphambi nangemva kokuphrinta ziyahlolwa njengoba kudingeka, bese kusetshenziswa ithuluzi lesitayela sendwangu i-phabrometer ukukala ukuqina kwezindwangu.
Umuzwa wesandla wendwangu ngaphambi nangemva kokuphrinta uhlolwe ngokuphelele ngokuqhathanisa izici ezintathu zokuzwa kwesandla okubushelelezi, ukuqina kanye nobumnene.
Ukuhlolwa kokushesha kombala kwezindwangu eziphrintiwe
(1) Ukuhlolwa kombala okusheshayo nokuhlikihla
Hlola ngokuhambisana ne-GB/T 3920-2008 “Ukuqina kombala kuya ekuhlikihleni ukuze kuvivinywe ukuqina kombala wezindwangu”.
(2) Ukuhlolwa kokuqina kombala kuya ekugezeni
Hlola ngokusho kwe-GB/T 3921.3-2008 “Ukuhlolwa kokuqina kombala kuya ekufakeni insipho kwezindwangu”.
Okuqukethwe okuqinile kokunamathisela kwasekuqaleni/%
I-CMC
I-HEC
I-HEMCC
SA
Ukuguquguquka kwejika le-viscosity yezinhlobo ezine zama-paste okuqala anokuqukethwe okuqinile
yi-sodium alginate (SA), i-carboxymethyl cellulose (CMC), i-hydroxyethyl cellulose (HEC) kanye
Ama-curve e-viscosity ezinhlobo ezine zama-paste okuqala e-hydroxyethyl carboxymethyl cellulose (HECMC) njengomsebenzi wokuqukethwe okuqinile.
, ukujiya kwama-paste amane okuqala kwanda ngokwanda kokuqukethwe okuqinile, kodwa izakhiwo zokwakha i-paste zama-paste amane okuqala zazingafani, phakathi kwazo i-SA
Impahla yokunamathisela ye-CMC ne-HECMC iyona engcono kakhulu, kanti imfanelo yokunamathisela ye-HEC iyona embi kakhulu.
Ama-curve okusebenza kwe-rheological yama-paste amane okuqala alinganiswe nge-rheometer ejikelezayo ye-MCR301.
- Ijika lokugoba njengomsebenzi wesilinganiso sokugunda. Ukugoba kwama-paste amane okuqala konke kwanda ngesilinganiso sokugunda.
ukwanda nokwehla, i-SA, i-CMC, i-HEC kanye ne-HECMC konke kuyizinto eziwuketshezi zepulasitiki. Ithebula 4.3 Amanani e-PVI ezinhlobo ezahlukene ze-paste eluhlaza
Uhlobo lokunamathisela olungavuthiwe SA CMC HEC HECMC
Inani le-PVI 0.813 0.526 0.621 0.726
Kungabonakala kuThebula 4.3 ukuthi inkomba ye-viscosity yokuphrinta ye-SA ne-HECMC inkulu futhi i-viscosity yesakhiwo incane, okungukuthi, i-paste yokuqala yokuphrinta
Ngaphansi kwesenzo samandla aphansi okusika, izinga lokushintsha kwe-viscosity lincane, futhi kunzima ukuhlangabezana nezidingo zesikrini esijikelezayo kanye nokuphrinta kwesikrini esiyisicaba; kuyilapho i-HEC ne-CMC
Inkomba ye-viscosity yokunyathelisa ye-CMC ingu-0.526 kuphela, futhi i-viscosity yayo yesakhiwo inkulu kakhulu, okungukuthi, i-paste yokunyathelisa yokuqala inamandla aphansi okusika.
Ngaphansi kwesenzo, izinga lokushintsha kwe-viscosity lilinganiselwe, elingahlangabezana kangcono nezidingo zesikrini esijikelezayo kanye nokuphrinta kwesikrini esiyisicaba, futhi lingafanelekela ukuphrinta kwesikrini esijikelezayo ngenombolo ye-mesh ephezulu.
Kulula ukuthola amaphethini nemigqa ecacile. Ukuthambekela/mPa·s
Ama-Rheological curves ama-paste amane aluhlaza angama-1%
Uhlobo lokunamathisela olungavuthiwe SA CMC HEC HECMC
h/cm 0.33 0.36 0.41 0.39
Imiphumela yokuhlolwa kokugcina amanzi ye-1%SA, 1%CMC, 1%HEC kanye ne-1%HECMC yokunamathisela yokuqala.
Kwatholakala ukuthi amandla okuphatha amanzi e-SA ayengcono kakhulu, kulandele i-CMC, kanti okubi kakhulu yi-HECMC kanye ne-HEC.
Ukuqhathaniswa Kokuhambisana Kwamakhemikhali
Ukwehluka kwe-viscosity yokuqala ye-paste ye-SA, i-CMC, i-HEC kanye ne-HECMC
Uhlobo lokunamathisela olungavuthiwe SA CMC HEC HECMC
Ukuthamba/mPa·s
Ukuqaqamba ngemva kokufaka i-urea/mPa
Ukuqina ngemva kokufaka usawoti ovimbela ukudaya i-S/mPa
Ukuqina ngemva kokufaka i-sodium bicarbonate/mPa
Ukuqina okune okuyinhloko kwe-paste kwe-SA, CMC, HEC kanye ne-HECMC kuyahlukahluka ngezithasiselo ezintathu eziyinhloko: i-urea, usawoti ovimbela ukudaya i-S kanye
Izinguquko ekufakweni kwe-sodium bicarbonate ziboniswe kuthebula. , ukungezwa kwezithasiselo ezintathu eziyinhloko, ku-paste yokuqala
Izinga lokushintsha kwe-viscosity liyahlukahluka kakhulu. Phakathi kwazo, ukungezwa kwe-urea kungandisa i-viscosity ye-paste yokuqala cishe ngo-5%, okungaba
Kubangelwa umphumela we-urea othambile futhi othambile; kanti usawoti ovimbela ukudaya i-S nawo uzokwandisa kancane ukuthamba kwe-paste yokuqala, kodwa awunawo umphumela omkhulu;
Ukwengezwa kwe-sodium bicarbonate kunciphisa kakhulu i-viscosity ye-paste yokuqala, phakathi kwayo i-CMC ne-HEC kwehle kakhulu, kanye ne-viscosity ye-HECMC/mPa·s.
66
Okwesibili, ukuhambisana kwe-SA kungcono.
I-SA CMC HEC HECMC
-15
-10
-5
05
I-Urea
Usawoti ovimbela ukudaya S
i-sodium bicarbonate
Ukuhambisana kwe-SA, CMC, HEC kanye ne-HECMC stock paste namakhemikhali amathathu
Ukuqhathaniswa kokuqina kwesitoreji
Ukusabalala kwe-viscosity yansuku zonke yama-pastes ahlukahlukene aluhlaza
Uhlobo lokunamathisela olungavuthiwe SA CMC HEC HECMC
Ukuhlakazeka/% 8.68 8.15 8. 98 8.83
izinga lokusabalala kwe-SA, i-CMC, i-HEC kanye ne-HECMC ngaphansi kwe-viscosity yansuku zonke yama-paste amane okuqala, ukusabalala
Uma inani lezinga lincane, kulapho ukuzinza kwesitoreji se-paste yokuqala ehambisanayo kuba ngcono khona. Kungabonakala etafuleni ukuthi ukuzinza kwesitoreji se-paste eluhlaza ye-CMC kuhle kakhulu.
Ukuqina kwesitoreji se-HEC kanye ne-HECMC okusanhlamvu okusanhlamvu kuphansi kakhulu, kodwa umehluko awubalulekile.
Isikhathi sokuthunyelwe: Septhemba-29-2022