1 Isingeniso
Selokhu kwavela odayi abasebenzayo, i-sodium alginate (SA) bekulokhu kunamathiselwe okuyinhloko kokuphrinta udayi ezindwangu zikakotini.
Ukusebenzisa izinhlobo ezintathu zei-cellulose ethersI-CMC, i-HEC kanye ne-HECMC elungiswe kuSahluko sesi-3 njengokunamathisela kwangempela, asetshenziswe ekuphrinteni udayi osebenzayo ngokulandelanayo.
imbali. Izakhiwo eziyisisekelo kanye nezakhiwo zokuphrinta zokunamathisela ezintathu zahlolwa futhi zaqhathaniswa ne-SA, futhi imicu emithathu yahlolwa.
Ukuphrinta izakhiwo ze-vitamin ethers.
2 Ingxenye yokuhlola
Izinto zokuhlola nezidakamizwa
Impahla kanye nezidakamizwa ezisetshenziswa ekuhlolweni. Phakathi kwazo, izindwangu zokuphrinta udayi ezisebenzayo bezilokhu zifisa futhi zicwengisiswa, njll.
Uchungechunge lwe-weave ehlanzekile kakotini ehlanjululwe ngaphambili, ukuminyana 60/10cm×50/10cm, intambo eluka 21tex×21tex.
Ukulungiswa kokunamathisela kokuphrinta nokunamathisela kombala
Ukulungiswa kokunamathisela kokuphrinta
Okunamathiselwe okune koqobo kwe-SA, CMC, HEC kanye ne-HECMC, ngokwesilinganiso sokuqukethwe okuqinile okuhlukile, ngaphansi kwezimo ezinyakazayo.
Bese, kancane kancane wengeze unamathisele emanzini, qhubeka ugoqa isikhathi esithile, kuze kube yilapho unamathisele wokuqala ufana futhi obala, yeka ukugqugquzela, bese uyibeka esitofini.
Engilazini, ake ume ubusuku bonke.
Ukulungiswa kokunamathisela kokuphrinta
Okokuqala ncibilikisa i-urea kanye nosawoti ovimbela ukudaya S ngenani elincane lamanzi, bese wengeza odayi abasebenzayo abancibilike emanzini, shisa futhi ugovuze okugeza kwamanzi afudumele.
Ngemva kokugqugquzela isikhathi esithile, engeza utshwala obudayi obuhlungiwe kunamathisele wokuqala bese ugovuza ngokulinganayo. Engeza ncibilikisa uze uqale ukuphrinta
I-sodium bicarbonate enhle. Ifomula yokunamathisela umbala yile: udayi osebenzayo 3%, unama wokuqala 80% (okuqukethwe okuqinile 3%), sodium bicarbonate 3%,
Usawoti ovimbela ukungcoliswa usawoti S ungu-2%, i-urea ingu-5%, futhi ekugcineni amanzi engezwa ku-100%.
inqubo yokuphrinta
Inqubo yokuphrinta yendwangu kakotini esebenzayo yokuphrinta udayi: ukulungiswa kokunamathisela kokuphrinta → ukuphrinta kwebha kazibuthe (ezingeni lokushisa legumbi nokucindezela, ukuphrinta izikhathi ezi-3) → ukomiswa (105℃, 10min) → ukushunqisa (105±2℃, 10min) → ukugeza ngamanzi abandayo → hot Ukugeza ngamanzi (80℃)→insipho ebilayo (ama-soap flakes 3g/L,
100℃, 10min) → ukugeza ngamanzi ashisayo (80℃) → ukugeza ngamanzi abandayo → ukomisa (60℃).
Ukuhlolwa kokusebenza okuyisisekelo kokunamathisela kwangempela
Namathisela ukuhlolwa kwesilinganiso
Okunamathiselwe okune koqobo kwe-SA, i-CMC, i-HEC ne-HECMC enokuqukethwe okuqinile okuhlukile kwalungiswa, kanye ne-Brookfield DV-Ⅱ
I-viscosity yokunamathisela ngakunye okunokuqukethwe okuqinile okuhlukile ihlolwe i-viscometer, futhi ijika loshintsho lwe-viscosity ngokugxilisa kwakuyizinga lokunamathisela lokunamathisela.
ijika.
I-Rheology and Printing Viscosity Index
I-Rheology: I-MCR301 i-rheometer ejikelezayo isetshenziselwe ukukala i-viscosity (η) yokunamathisela kwangempela ngamanani ahlukene okushear.
Ijika lokushintsha izinga le-shear yijika le-rheological.
Inkomba ye-viscosity yokuphrinta: Inkomba ye-viscosity yokunyathelisa iboniswa yi-PVI, i-PVI = η60/η6, lapho u-η60 no-η6 ngokulandelanayo.
I-viscosity yokunamathisela kwasekuqaleni kukalwa i-viscometer ye-Brookfield DV-II ngesivinini se-rotor esifanayo esingu-60r/min kanye no-6r/min.
ukuhlolwa kokugcinwa kwamanzi
Kala u-25g wokunamathisela kwasekuqaleni ku-beaker engu-80mL, bese wengeza kancane u-25mL wamanzi acwecwe ngenkathi uvuselela ukwenza ingxube.
Ixubene ngokulinganayo. Thatha iphepha lokuhlunga elinobude × ububanzi obuyi-10cm × 1cm, bese umaka umkhawulo owodwa wephepha lokuhlunga ngomugqa wesikali, bese ufaka isiphetho esimakiwe kunamathisele, ukuze umugqa wesikali uhambisane nendawo yokunamathisela, futhi isikhathi siqalwa ngemva kokufakwa kwephepha lokuhlunga, futhi siqoshwa ephepheni lokuhlunga ngemva kwemizuzu engama-30.
Ukuphakama lapho umswakama ukhuphuka khona.
4 Ukuhlolwa Kokuhambisana Kwamakhemikhali
Ngokuphrinta udayi osebenzayo, hlola ukuhambisana kokunamathisela kwangempela kanye nabanye odayi abangezwe kunamathisele wokuphrinta,
Okusho ukuthi, ukuhambisana phakathi kokunamathisela kwangempela kanye nezingxenye ezintathu (i-urea, i-sodium bicarbonate ne-anti-staining salt S), izinyathelo ezithile zokuhlola zimi kanje:
(1) Ukuze kuhlolwe i-viscosity yereferensi yokunamathisela kwasekuqaleni, engeza u-25mL wamanzi acwecwe ku-50g wokunamathisela kokuphrinta kwasekuqaleni, ugovuze ngokulinganayo, bese ukala i-viscosity.
Inani le-viscosity elitholiwe lisetshenziswa njenge-viscosity yereferensi.
(2) Ukuze uhlole i-viscosity yokunamathisela kwasekuqaleni ngemva kokwengeza izithako ezihlukahlukene (i-urea, i-sodium bicarbonate kanye nosawoti ophikisayo we-S), faka u-15% olungiselelwe.
Isixazululo se-Urea (ingxenyana yobuningi), isisombululo sikasawoti esingu-3% esinqanda ukubola (ingxenye enkulu) kanye nesisombululo se-sodium bicarbonate esingu-6% (ingxenyana yobuningi)
I-25mL yengezwe ku-50g wokunamathisela kwasekuqaleni ngokulandelanayo, igoqwe ngokulinganayo futhi ibekwe isikhathi esithile, bese ikalwa i-viscosity yokunamathisela kwasekuqaleni. Ekugcineni, i-viscosity izolinganiswa
Amanani e-viscosity aqhathaniswa ne-viscosity yereferensi ehambisanayo, futhi iphesenti lokushintshwa kwe-viscosity yokunamathisela kwangempela ngaphambi nangemuva kokwengeza udayi ngamunye nezinto zamakhemikhali zibaliwe.
Ukuhlolwa Kokuqina Kwesitoreji
Gcina unamathisele wangempela ekamelweni lokushisa (25°C) ngaphansi kwengcindezi evamile izinsuku eziyisithupha, ulinganise i-viscosity yokunamathisela kwasekuqaleni nsuku zonke ngaphansi kwezimo ezifanayo, futhi ubale i-viscosity yokunamathisela kwasekuqaleni ngemva kwezinsuku ezingu-6 uma kuqhathaniswa ne-viscosity elinganiswa usuku lokuqala ngefomula 4-(1). Idigri yokusabalalisa yokunamathisela ngakunye koqobo ihlolwa idigri yokusabalalisa njengenkomba
Ukuzinza kwesitoreji, ukuhlakazeka kuncane, kuba ngcono ukuzinza kwesitoreji sokunamathisela kwangempela.
Ukuhlolwa kwezinga lokushelela
Okokuqala sula indwangu kakotini ukuze iphrinte isisindo esingaguquki, yikale futhi uyirekhode njenge-mA; bese usula indwangu kakotini ngemva kokunyathelisa esisindweni esingaguquki, yikale futhi uyirekhode
i-mB; ekugcineni, indwangu kakotini ephrintiwe ngemuva kokushiswa, insipho nokugeza iyomiswa ukuze ibe nesisindo esiqhubekayo, ikalwe futhi irekhodwe njenge-mC.
Ukuhlolwa kwesandla
Okokuqala, izindwangu zikakotini ngaphambi nangemva kokunyathelisa zithathwa njengesampula njengoba kudingeka, bese insimbi yesitayela sendwangu ye-phabrometer isetshenziselwa ukukala ukutholakala kwezindwangu.
Ukuzwa kwesandla kwendwangu ngaphambi nangemuva kokuphrinta kwahlolwa ngokucophelela ngokuqhathanisa izici ezintathu zokuzizwa kwezandla zokushelela, ukuqina nokuthambile.
Ukuhlolwa kokushesha kombala kwezindwangu eziphrintiwe
(1) Ukushesha kombala ekuhlolweni kokuhlikihla
Hlola ngokuhambisana ne-GB/T 3920-2008 “Ukushesha kombala ekuhlikihleni ukuze kuhlolwe ukushesha kombala kwezindwangu”.
(2) Ukuhlolwa kokushesha kombala ekuwasheni
Hlola ngokuya nge-GB/T 3921.3-2008 “Ukushesha kombala ekuhlolweni kokushesha kombala wezindwangu”.
Namathisela okuqukethwe okuqinile/%
I-CMC
I-HEC
I-HEMCC
SA
Ijika elihlukile le-viscosity yezinhlobo ezine zokunamathisela kwangempela ngokuqukethwe okuqinile
i-sodium alginate (SA), i-carboxymethyl cellulose (CMC), i-hydroxyethyl cellulose (HEC) kanye
Amajika e-viscosity ezinhlobo ezine zokunamathisela kwangempela kwe-hydroxyethyl carboxymethyl cellulose (HECMC) njengomsebenzi wokuqukethwe okuqinile.
, i-viscosity yama-paste amane okuqala anda ngokwanda kokuqukethwe okuqinile, kodwa izakhiwo zokunamathisela zokunamathisela ezine zangempela zazingafani, phakathi kwazo i-SA.
Impahla yokunamathisela ye-CMC ne-HECMC ihamba phambili, futhi impahla yokunamathisela ye-HEC yimbi kakhulu.
Amajika okusebenza kwe-rheological okunamathiselwe okune koqobo akalwe nge-MCR301 rheometer ejikelezayo.
- Ijika le-viscosity njengomsebenzi we-shear rate. Ama-viscosity ama-paste amane okuqala wonke akhuphuka ngesilinganiso sokugunda.
ukwanda nokuncipha, i-SA, i-CMC, i-HEC kanye ne-HECMC zonke zingama-pseudoplastic fluids. Ithebula 4.3 amanani we-PVI wokunamathisela okuluhlaza okuhlukahlukene
Uhlobo lokunamathisela okuluhlaza SA CMC HEC HECMC
Inani le-PVI 0.813 0.526 0.621 0.726
Kuyabonakala kuThebula 4.3 ukuthi inkomba ye-viscosity yokunyathelisa ye-SA kanye ne-HECMC inkulu futhi i-viscosity yesakhiwo incane, okungukuthi, ukunamathisela kwasekuqaleni.
Ngaphansi kwesenzo samandla aphansi we-shear, izinga lokushintsha i-viscosity lincane, futhi kunzima ukuhlangabezana nezidingo zesikrini esijikelezayo nokuphrinta kwesikrini esiyisicaba; ngenkathi i-HEC ne-CMC
Inkomba ye-viscosity yokunyathelisa ye-CMC ingu-0.526 kuphela, futhi i-viscosity yayo yesakhiwo inkulu ngokuqhathaniswa, okungukuthi, ukunamathisela kokuqala kokuphrinta kunamandla aphansi okugunda.
Ngaphansi kwesenzo, izinga lokushintsha i-viscosity limaphakathi, elingahlangabezana kangcono nezidingo zesikrini esijikelezayo nokuphrinta kwesikrini esiyisicaba, futhi singafanelekela ukuphrinta kwesikrini esijikelezayo esinenombolo ephezulu yemeshi.
Kulula ukuthola amaphethini nemigqa ecacile. I-Viscosity/mPa·s
Amajika e-Rheological of four 1% okuqinile okunamathiselwe okuluhlaza
Uhlobo lokunamathisela okuluhlaza SA CMC HEC HECMC
h/cm 0.33 0.36 0.41 0.39
Imiphumela yokuhlola yokubamba amanzi ye-1%SA, 1%CMC, 1%HEC kanye ne-1%HECMC yokunamathisela kwangempela.
Kwatholakala ukuthi umthamo wokubamba amanzi we-SA wawungcono kakhulu, kulandele i-CMC, futhi okubi nakakhulu yi-HECMC kanye ne-HEC.
Ukuqhathaniswa Kwamakhemikhali
Ukuhluka kwe-viscosity yokunamathisela yasekuqaleni ye-SA, CMC, HEC kanye ne-HECMC
Uhlobo lokunamathisela okuluhlaza SA CMC HEC HECMC
I-Viscosity/mPa·s
I-Viscosity ngemuva kokwengeza i-urea/mPa s
I-Viscosity ngemva kokwengeza usawoti ovimbela ukubola i-S/mPa s
I-Viscosity ngemva kokwengeza i-sodium bicarbonate/mPa s
Ama-viscosities amane okunamathisela okuyisisekelo we-SA, CMC, HEC kanye ne-HECMC ayahlukahluka ngezithako ezintathu eziyinhloko: i-urea, i-anti-staining salt S kanye
Izinguquko ekufakweni kwe-sodium bicarbonate zikhonjisiwe etafuleni. , ukungezwa kwezithasiselo ezintathu eziyinhloko, ekunamathiseleni kwasekuqaleni
Izinga lokushintsha kwe-viscosity lihluka kakhulu. Phakathi kwazo, ukungezwa kwe-urea kungakhuphula i-viscosity yokunamathisela kwangempela cishe ngo-5%, okungenzeka
Kubangelwa umphumela we-hygroscopic kanye nokukhukhuma kwe-urea; kanye ne-anti-staining salt S izophinde ikhulise kancane i-viscosity yokunamathisela kwangempela, kodwa inomphumela omncane;
Ukwengezwa kwe-sodium bicarbonate kunciphise kakhulu i-viscosity yokunamathisela kwangempela, phakathi kwayo i-CMC ne-HEC yehle kakhulu, kanye ne-viscosity ye-HECMC/mPa·s
66
Okwesibili, ukuhambisana kwe-SA kungcono.
SA CMC HEC HECMC
-15
-10
-5
05
I-Urea
I-anti-staining salt S
i-sodium bicarbonate
Ukuhambisana kwe-SA, CMC, HEC kanye ne-HECMC yokunamathisela kwesitoko ngamakhemikhali amathathu
Ukuqhathaniswa kokuqina kwesitoreji
Ukuhlakazwa kwe-viscosity yansuku zonke ye-pastes ehlukahlukene eluhlaza
Uhlobo lokunamathisela okuluhlaza SA CMC HEC HECMC
Ukuhlakazeka/% 8.68 8.15 8. 98 8.83
yi-dispersion degree ye-SA, CMC, HEC kanye ne-HECMC ngaphansi kwe-viscosity yansuku zonke yama-pastes amane oqobo, i-dispersion
Uma lincane inani ledigri, kuba ngcono ukuzinza kwesitoreji sokunamathisela kwangempela okuhambisanayo. Kungabonakala etafuleni ukuthi ukuzinza kwesitoreji sokunamathisela okuluhlaza kwe-CMC kuhle kakhulu
Ukuzinza kwesitoreji se-HEC kanye ne-HECMC yokunamathisela eluhlaza kubi kakhulu, kodwa umehluko awubalulekile.
Isikhathi sokuthumela: Sep-29-2022