1. Intshayelelo
Ukusukela ekufikeni kwedayi ezisebenzayo, i-sodium alginate (SA) ibe yeyona nto iphambili yokuncamathelisa idayi esebenzayo kwilaphu lomqhaphu.
Ukusebenzisa iintlobo ezintathu zei-cellulose ethersI-CMC, i-HEC kunye ne-HECMC elungiselelwe kwiSahluko sesi-3 njenge-paste yokuqala, zaye zasetyenziswa kushicilelo lwedayi esebenzayo ngokulandelelanayo.
intyatyambo.Iimpawu ezisisiseko kunye neempawu zokuprinta zeentlama ezintathu zavavanywa kwaye zithelekiswa ne-SA, kunye nemisonto emithathu yavavanywa.
Iimpawu zokushicilela ze-vitamin ethers.
2 Inxalenye yovavanyo
Izinto zokuvavanya kunye neziyobisi
Izinto ezikrwada kunye neziyobisi ezisetyenziswa kuvavanyo.Phakathi kwazo, iilaphu zokuprinta zedayi ezisebenzayo ziye zafuna kwaye zicocwa, njl.
Uluhlu olulukiweyo lwangaphambili lomqhaphu olusulungekileyo olulukiweyo, ubuninzi 60/10cm×50/10cm, umsonto olukwa 21x21tex.
Ukulungiswa kokuncamathisela ukuprinta kunye nokuncamathisela umbala
Ukulungiswa kokuncamathelisa ukuprinta
Kwiipasti ezine zantlandlolo ze-SA, i-CMC, i-HEC kunye ne-HECMC, ngokomlinganiselo wesiqulatho esiqinileyo esahlukileyo, phantsi kweemeko ezivuselelayo.
Emva koko, ngokukhawuleza ukongeza i-paste emanzini, qhubeka uvuselela ixesha elithile, de kube i-paste yokuqala ifana kwaye ibonakale, yeka ukuphazamisa, kwaye uyibeke kwisitofu.
Kwiglasi, makhe ume ubusuku bonke.
Ukulungiswa kokuncamathelisa ukuprinta
Okokuqala nyibilikisa i-urea kunye ne-anti-daying ityuwa S kunye nenani elincinci lamanzi, emva koko yongeza iidayi ezisebenzayo ezichithwe emanzini, ubushushu kwaye ugxobhoze kwibhafu yamanzi afudumeleyo.
Emva kokuvuselela ixesha elithile, yongeza utywala obuhluziweyo bedayi kwi-paste yokuqala kwaye udibanise ngokulinganayo.Yongeza nyibilike ude uqale ukuprinta
Ibicarbonate yesodium elungileyo.Ifomula yokuncamathisela kombala yile: idayi esebenzayo 3%, intlama yokuqala eyi-80% (umxholo oqinileyo 3%), sodium bicarbonate 3%,
Ityuwa ye-Anti-contamination S yi-2%, i-urea yi-5%, kwaye ekugqibeleni amanzi ongezwa kwi-100%.
inkqubo yoshicilelo
Ilaphu lomqhaphu elisebenza ngedayi inkqubo yoshicilelo: ukulungiswa kwencadi yoshicilelo → ushicilelo lwemagnethi yebha (kwiqondo lobushushu begumbi kunye noxinzelelo, ukuprinta amaxesha ama-3) → ukomisa (105℃, 10min) → ukuphunga (105±2℃, 10min) → ukuhlamba amanzi abandayo → kushushu Ukuhlamba ngamanzi (80℃)→isepha ebilayo (iiflake zesepha 3g/L,
100℃, 10min) → ukuhlamba ngamanzi ashushu (80℃) → ukuhlamba ngamanzi abandayo → ukomisa (60℃).
Uvavanyo olusisiseko lokwenziwa koncamathiselo loqobo
Ncamathelisa ireyithi yovavanyo
Iintlama ezine zoqobo ze-SA, i-CMC, i-HEC kunye ne-HECMC enezinto eziqinileyo ezahlukeneyo zalungiswa, kunye ne-Brookfield DV-Ⅱ
I-viscosity ye-paste nganye enomxholo ohlukeneyo oqinileyo yavavanywa yi-viscometer, kwaye ijika lenguqu ye-viscosity kunye nogxininiso yayiyisantya sokubunjwa kwe-paste.
igophe.
I-Rheology kunye noShicilelo lwe-Viscosity Index
I-Rheology: I-MCR301 i-rheometer ejikelezayo yayisetyenziselwa ukulinganisa i-viscosity (η) ye-paste yasekuqaleni kumazinga ahlukeneyo okucheba.
Ijika lokutshintsha kwesantya sokucheba yigophe le-rheological.
Ushicilelo lwe-viscosity index: Ushicilelo lwe-viscosity index lubonakaliswa yi-PVI, PVI = η60/η6, apho η60 kunye no-η6 ngokulandelelanayo.
I-viscosity ye-paste yasekuqaleni elinganiswe yi-viscometer ye-Brookfield DV-II kwi-rotor speed efanayo ye-60r / min kunye ne-6r / min.
uvavanyo lokugcina amanzi
Viyisha i-25g yentlama yokuqala kwi-beaker eyi-80mL, kwaye kancinane wongeze i-25mL yamanzi adiyiliweyo ngelixa uvuselela ukwenza umxube.
Ixutywe ngokulinganayo.Thatha iphepha lokucoca ubungakanani obunobude × ububanzi be-10cm × 1cm, kwaye umaka isiphelo esinye sephepha lokucoca ngomgca wesikali, uze ufake isiphelo esiphawulweyo kwincama, ukuze umgca wesikali ungqinelane nomhlaba wokuncamathisela, kwaye ixesha liqalwa emva kokuba iphepha lokucoca lifakwe, kwaye lirekhodwa kwiphepha lokucoca emva kwemizuzu engama-30.
Ukuphakama apho ukufuma kunyuka.
4 Uvavanyo lokuhambelana kweMichiza
Ukuprintwa kwedayi esebenzayo, vavanya ukuhambelana kwedayi yokuqala kunye nezinye iidayi ezongeziweyo kwipaste yokuprinta,
Oko kukuthi, ukuhambelana phakathi kwe-paste yokuqala kunye namacandelo amathathu (urea, i-sodium bicarbonate kunye ne-anti-staining salt S), amanyathelo ovavanyo oluthile lulandelayo:
(1) Uvavanyo lwereferensi ye-viscosity ye-paste yokuqala, yongeza i-25mL yamanzi adibeneyo kwi-50g ye-paste yokuqala yokushicilela, ugxobhoze ngokulinganayo, kwaye emva koko ulinganise i-viscosity.
Ixabiso le-viscosity elifunyenweyo lisetyenziswa njenge-reference viscosity.
(2) Ukuvavanya i-viscosity ye-paste yokuqala emva kokongeza izithako ezahlukeneyo (i-urea, i-sodium bicarbonate kunye ne-anti-staining ityuwa S), beka i-15% elungiselelwe
Isisombululo se-Urea (iqhekeza elikhulu), i-3% ye-anti-staining ityuwa ye-S isisombululo (iqhekeza elikhulu) kunye ne-6% yesisombululo se-sodium bicarbonate (iqhekeza elikhulu)
I-25mL yongezwa kwi-50g ye-paste yokuqala ngokulandelelana, yaxutywa ngokulinganayo kwaye yabekwa ixesha elithile, kwaye emva koko ilinganisa i-viscosity ye-paste yokuqala.Ekugqibeleni, i-viscosity iya kulinganiswa
Amaxabiso e-viscosity athelekiswa nereferensi ehambelanayo ye-viscosity, kwaye ipesenti yokutshintsha kwe-viscosity ye-paste yokuqala ngaphambi nasemva kokongeza idayi nganye kunye nezinto zekhemikhali zibaliwe.
Uvavanyo loZinzo lokuGcina
Gcina intlama yokuqala kwiqondo lokushisa (25 ° C) phantsi koxinzelelo oluqhelekileyo lweentsuku ezintandathu, ukulinganisa i-viscosity ye-paste yokuqala yonke imihla phantsi kweemeko ezifanayo, kwaye ubale i-viscosity ye-paste yokuqala emva kweentsuku ze-6 xa kuthelekiswa ne-viscosity elinganiselwe ngosuku lokuqala ngefomula 4-(1).Iqondo lokusasazwa kwentlama nganye yoqobo ivavanywa liqondo lokusasazwa njengesalathiso
Ukuzinza kokugcinwa, okuncinci ukusabalalisa, kungcono ukuzinza kokugcinwa kwe-paste yasekuqaleni.
Uvavanyo lwezinga lokutyibilika
Okokuqala yomisa indwangu yekotoni ukuba ishicilelwe kwisisindo esisisigxina, ulinganise kwaye uyirekhode njenge-mA;uze womise i-cotton fabric emva kokushicilela kwisisindo esisisigxina, ulinganise kwaye urekhode
yi mB;Ekugqibeleni, ilaphu lomqhaphu eliprintiweyo emva kokutshisa, isepha kunye nokuhlamba zomiswa ukuba zibe nobunzima obuqhubekayo, zilinganiswe kwaye zirekhodwe njenge-mC.
Uvavanyo lwezandla
Okokuqala, amalaphu ekotoni ngaphambi nangemva kokuprintwa athathwa njengesampulu njengoko kufunwa, kwaye ke isixhobo selaphu lelaphu le-phabrometer sisetyenziselwa ukulinganisa ubunwe belaphu.
Imvakalelo yesandla yelaphu phambi nasemva koshicilelo ivavanywe ngokubanzi ngokuthelekisa iimpawu ezintathu zokuziva kwezandla zokuguda, ukuqina kunye nokuthamba.
Uvavanyo lokukhawuleza kombala weendwangu eziprintiweyo
(1) Ukukhawuleza kombala kuvavanyo lokuhlikihla
Uvavanyo ngokuhambelana ne-GB/T 3920-2008 “Ukukhawuleza koMbala ukuhlikihla uvavanyo olukhawulezayo lombala welaphu”.
(2) Uvavanyo lokukhawuleza kombala ekuhlambeni
Uvavanyo ngokwe-GB/T 3921.3-2008 “Ukukhawuleza kombala kwisepha yovavanyo lokukhawuleza kombala welaphu”.
Isiqulatho sokuqala esincamathelayo/%
CMC
I-HEC
I-HEMCC
SA
Ijika eliguquguqukayo le-viscosity yeentlobo ezine zeepaste zokuqala ezinomxholo oqinileyo
I-alginate yesodium (SA), i-carboxymethyl cellulose (CMC), i-hydroxyethyl cellulose (HEC) kunye
Iijika zeViscosity zeentlobo ezine zepastes yasekuqaleni ye-hydroxyethyl carboxymethyl cellulose (HECMC) njengomsebenzi womxholo oqinileyo.
, i-viscosity ye-paste ezine zantlandlolo zanda ngokunyuka komxholo oqinileyo, kodwa iimpawu zokuncamathisela ze-paste ezine zangaphambili azifani, phakathi kwazo i-SA.
Ipropathi yokuncamathisela ye-CMC kunye ne-HECMC yeyona ilungileyo, kwaye ipropathi yokuncamathisela ye-HEC yeyona imbi.
I-rheological performance curves ye-pastes ezine zoqobo zalinganiswa nge-MCR301 rheometer ejikelezayo.
-Ijiko le-Viscosity njengomsebenzi wesantya sokucheba.I-viscosity ye-pastes ezine zoqobo zonke zonyuka ngesantya sokucheba.
ukwanda kunye nokuncipha, SA, CMC, HEC kunye HECMC zonke pseudoplastic fluids.Itheyibhile 4.3 amaxabiso ePVI eentlobo ezahlukeneyo zokuncamathisela
Uhlobo lwencadi ekrwada SA CMC HEC HECMC
PVI ixabiso 0.813 0.526 0.621 0.726
Inokubonwa kwiThebhile 4.3 ukuba i-printing viscosity index ye-SA kunye ne-HECMC inkulu kwaye i-viscosity yesakhiwo incinci, oko kukuthi, ukuprinta kokuqala.
Ngaphantsi kwesenzo samandla e-shear ephantsi, izinga lokutshintsha kwe-viscosity lincinci, kwaye kunzima ukuhlangabezana neemfuno zesikrini esijikelezayo kunye nokuprintwa kwesikrini esicaba;ngelixa i-HEC kunye ne-CMC
Isalathisi sokushicilela i-viscosity ye-CMC yi-0.526 kuphela, kwaye i-viscosity yayo yesakhiwo inkulu kakhulu, oko kukuthi, i-original paste yokushicilela ine-shear force ephantsi.
Ngaphantsi kwesenzo, izinga lokutshintsha kwe-viscosity liphakathi, elinokuthi lihlangabezane bhetele neemfuno zesikrini esijikelezayo kunye noshicilelo lweskrini esicaba, kwaye lunokufaneleka ukuprintwa kwesikrini esinenombolo ephezulu ye-mesh.
Kulula ukufumana iipateni ezicacileyo kunye nemigca.Viscosity/mPa·s
Iigophe zeRheological ezine 1% izinto eziqinileyo intlama ekrwada
Uhlobo lwencadi ekrwada SA CMC HEC HECMC
h/cm 0.33 0.36 0.41 0.39
Iziphumo zovavanyo lokubamba amanzi ze-1%SA, 1%CMC, 1%HEC kunye ne-1%HECMC yentlama yokuqala.
Kwafunyaniswa ukuba umthamo wokubamba amanzi e-SA ngowona ungcono, kulandelwa yi-CMC, kwaye okubi ngakumbi yi-HECMC kunye ne-HEC.
Uthelekiso lokuhambelana kweMichiza
Ukwahluka kwe-viscosity yokuqala ye-paste ye-SA, CMC, HEC kunye ne-HECMC
Uhlobo lwencadi ekrwada SA CMC HEC HECMC
Viscosity/mPa·s
Viscosity emva kokongeza urea/mPa s
I-Viscosity emva kokongeza ityuwa echasene ne-S / mPa s
I-Viscosity emva kokongeza i-sodium bicarbonate / mPa s
I-viscosities ezine zokuncamathelisa eziphambili ze-SA, i-CMC, i-HEC kunye ne-HECMC ziyahluka kunye nezongezo ezintathu eziphambili: i-urea, i-anti-staining ityuwa S kunye
Utshintsho kokongezwa kwe-sodium bicarbonate kuboniswe kwitheyibhile., udibaniso lwezongezo ezintathu eziphambili, kwintlama yokuqala
Izinga lokutshintsha kwi-viscosity lihluka kakhulu.Phakathi kwabo, ukongezwa kwe-urea kunokunyusa i-viscosity ye-paste yokuqala malunga ne-5%, enokuthi
Ibangelwa yimpembelelo ye-hygroscopic kunye ne-puffing ye-urea;kunye ne-anti-staining ityuwa S iya kwandisa kancinane i-viscosity ye-paste yokuqala, kodwa inefuthe elincinci;
Ukongezwa kwe-sodium bicarbonate kunciphisa kakhulu i-viscosity ye-paste yokuqala, phakathi kwayo i-CMC kunye ne-HEC yehla kakhulu, kunye ne-viscosity ye-HECMC / mPa · s.
66
Okwesibini, ukuhambelana kwe-SA kungcono.
SA CMC HEC HECMC
-15
-10
-5
05
Urea
Ityuwa echasene netyuwa S
sodium bicarbonate
Ukuhambelana kwe-SA, i-CMC, i-HEC kunye ne-HECMC ye-stock pastes kunye neekhemikhali ezintathu
Ukuthelekiswa kozinzo lokugcina
Ukusasazwa kwe-viscosity yemihla ngemihla yeentlama ezahlukeneyo ezikrwada
Uhlobo lwencadi ekrwada SA CMC HEC HECMC
Ukusasazwa/% 8.68 8.15 8. 98 8.83
yi-dispersion degree ye-SA, CMC, HEC kunye ne-HECMC phantsi kwe-viscosity yemihla ngemihla ye-pastes ezine zantlandlolo, ukusasazwa
Ixabiso elincinci ledigri, ngcono ukuzinza kokugcinwa kwe-paste ehambelanayo.Inokubonwa kwitheyibhile ukuba uzinzo lokugcina lweCMC intlama eluhlaza lugqwesileyo
Ukuzinza kokugcinwa kwe-HEC kunye ne-HECMC yokuncamathisela ekrwada kumbi kakhulu, kodwa umahluko awubalulekanga.
Ixesha lokuposa: Sep-29-2022