1 Nhanganyaya
Kubva pakatanga kushandiswa madhayi anochinja ruvara, sodium alginate (SA) ndiyo yave iri mushonga mukuru wekudhinda madhayi anochinja ruvara pamachira edonje.
Kushandisa mhando nhatu dzeethers dze celluloseCMC, HEC neHECMC zvakagadzirwa muChitsauko 3 sechipunu chekutanga, zvakashandiswa pakudhinda dhayi zvinoitwa ne reactive dye zvichiteerana.
ruva. Hunhu hwepakutanga uye hunhu hwekudhinda hwemapesita matatu akaedzwa uye akaenzaniswa neSA, uye mafiber matatu akaedzwa.
Hunhu hwekudhinda hwemavitamin ethers.
2 Chikamu chekuyedza
Zvinhu zvekuyedza nemishonga
Zvinhu zvisina kugadzirwa nemishonga zvakashandiswa mukuyedza. Pakati pazvo, machira ekudhinda dhayi anochinja-chinja ave achigadzira saizi nekuchenesa, nezvimwewo.
Nhevedzano yejira rakarukwa redonje rakagadziriswa kare, density 60/10cm×50/10cm, shinda yakarukwa 21tex×21tex.
Kugadzirira kudhinda paste ne color paste
Kugadzirira purinda yekudhinda
Kune mapastes mana ekutanga eSA, CMC, HEC neHECMC, zvichienderana nehuwandu hwezvakawanda zvakasimba, mumamiriro ezvinhu ekukurunga
Wobva waisa paste zvishoma nezvishoma mumvura, ramba uchikurunga kwenguva yakati, kusvika paste yekutanga yafanana uye yanyatsojeka, rega kukurunga, woiisa pamoto.
Mugirazi, rega zvimire usiku hwose.
Kugadzirira purinda yekudhinda
Tanga nekunyungudutsa urea nemunyu unodzivirira kudhaya S nemvura shoma, wobva wawedzera madhayi anonyunguduka mumvura, wopisa wobva wasanganisa nemvura inodziya.
Mushure mekukurunga kwenguva yakati, wedzera doro rakasefetwa mupaste yekutanga wokurunga zvakaenzana. Wedzera kunyungudika kusvika watanga kudhinda.
Sodium bicarbonate yakanaka. Fomura yependi yeruvara ndeiyi: reactive dye 3%, original paste 80% (solid content 3%), sodium bicarbonate 3%,
Munyu unodzivirira kusvibiswa S 2%, urea 5%, uye pakupedzisira mvura inowedzerwa ku100%.
maitiro ekudhinda
Maitiro ekudhinda dhayi rejira redonje: kugadzirira kudhinda paste → kudhinda kwemagnetic bar (pakupisa kwemukamuri nekumanikidzwa, kudhinda katatu) → kuomesa (105℃, 10min) → kupfungaira (105±2℃, 10min) → kugeza nemvura inotonhora → Kugeza nemvura inopisa (80℃) → sipo iri kufashaira (sipo flakes 3g/L,
100℃, 10min) → kugeza nemvura inopisa (80℃) → kugeza nemvura inotonhora → kuomesa (60℃).
Bvunzo yekutanga yekushanda kwepaste yekutanga
Kuyedzwa kwemutengo wepaste
Mapasta mana ekutanga eSA, CMC, HEC neHECMC ane zvinhu zvakasiyana-siyana zvakasimba akagadzirwa, uye Brookfield DV-Ⅱ
Kupenya kwepaste yega yega ine zvinhu zvakasiyana-siyana zvakasimba kwakaedzwa ne viscometer, uye kuchinja kwekona kwepaste nehukuru hwayo kwaive chiyero chekuumbwa kwepaste.
kukombama.
Rheology uye Printing Viscosity Index
Rheology: MCR301 rotational rheometer yakashandiswa kuyera viscosity (η) ye paste yekutanga pamazinga akasiyana ekuchekwa.
Mutsetse wekuchinja kwehuwandu hwekuchekwa kwemasero ndiwo mutsetse we rheological.
Nhamba yekudhindisa viscosity: Nhamba yekudhindisa viscosity inoratidzwa nePVI, PVI = η60/η6, apo η60 naη6 zviri zvakateerana.
Kupenya kwepaste yekutanga kwakayerwa neBrookfield DV-II viscometer nekumhanya kwakafanana kwe rotor kwe60r/min uye 6r/min.
bvunzo yekuchengetedza mvura
Yera 25g yemusanganiswa wekutanga mu 80mL beaker, wobva wawedzera 25mL yemvura yakasanganiswa zvishoma nezvishoma uchikurunga kuti mugadzire musanganiswa.
Inosanganiswa zvakaenzana. Tora bepa rekusefa rine urefu hwe10cm × 1cm, woisa mutsetse wekuyera kumucheto kwebepa rekusefa, wobva waisa mugumo wakanyorwa mupaste, kuitira kuti mutsetse wekuyera uwirirane nepamusoro pepaste, uye nguva inotanga mushure mekunge bepa rekusefa raiswa, uye rinonyorwa pabepa rekusefa mushure memaminitsi makumi matatu.
Kureba uko hunyoro hunokwira.
4 Muedzo weKuenderana kweMakemikari
Pakudhinda dhayi nenzira inoshanda, edza kuona kuti paste yekutanga inoenderana here nemamwe madhayi akawedzerwa mupaste yekudhinda,
Kureva kuti, zvinoenderana pakati pe paste yekutanga nezvinhu zvitatu (urea, sodium bicarbonate uye anti-staining salt S), matanho chaiwo ekuyedza ndeaya anotevera:
(1) Kuti muyedze kutaridzika kwehuremu hwepaste yekutanga, wedzera 25mL yemvura yakasanganiswa mu50g yepaste yekutanga, sanganisai zvakaenzana, mozoyera huremu hwepaste.
Kukosha kwe viscosity kunowanikwa kunoshandiswa se reference viscosity.
(2) Kuti muedze kusviba kwepaste yekutanga mushure mekuwedzera zvinhu zvakasiyana-siyana (urea, sodium bicarbonate uye anti-staining salt S), isai 15% yakagadzirwa.
Mhinduro yeUrea (chikamu chehuremu), mhinduro yeS ye3% inodzivirira kutsvuka kwemunyu (chikamu chehuremu) uye mhinduro ye6% yesodium bicarbonate (chikamu chehuremu)
25mL yakawedzerwa ku50g yemusanganiswa wekutanga, yakasanganiswa zvakaenzana ndokuiswa kwenguva yakati, uye yakazoyerwa kusimba kwemusanganiswa wekutanga. Pakupedzisira, kusimba kuchayerwa.
Hunhu hwe viscosity hwakaenzaniswa ne viscosity inoenderana, uye chikamu chekuchinja kwe viscosity ye paste yekutanga isati yawedzerwa uye mushure mekuwedzera dhayi rega rega nezvinhu zvemakemikari chakaverengerwa.
Kuyedzwa Kwekugadzikana Kwekuchengetedza
Chengeta paste yekutanga patembiricha yemumba (25°C) pasi pekumanikidzwa kwakajairika kwemazuva matanhatu, yera viscosity yepaste yekutanga zuva rega rega pasi pemamiriro akafanana, uye verenga viscosity yepaste yekutanga mushure memazuva matanhatu uchienzaniswa ne viscosity yakayerwa pazuva rekutanga nefomula 4-(1). Dhigirii rekupararira kwepaste yega yega yekutanga rinoongororwa nedhigirii rekupararira sechiratidzo.
Kugadzikana kwekuchengetedza, kupararira kudiki, kugadzikana kwekuchengetedza kwepaste yekutanga kuri nani.
Kuedzwa kwehuwandu hwekutsvedza
Tanga waomesa jira redonje kuti ridhindwe kusvika pahuremu husingachinji, yera worinyora se mA; wozoomesa jira redonje mushure mekudhinda kusvika pahuremu husingachinji, yera worinyora pasi
i mB; pakupedzisira, jira redonje rakadhindwa mushure mekupiswa nemhepo, sipo uye kuwacha rinoomeswa kusvika pahuremu hwakafanana, royerwa uye ronyorwa se mC
Kuedzwa nemaoko
Kutanga, machira edonje asati adhindwa uye mushure mekudhindwa anotorwa sezvinodiwa, uye mudziyo wejira rephabrometer unoshandiswa kuyera kushanda kwemachira.
Kunzwa kweruoko kwejira risati radhindwa uye radhindwa kwakaongororwa zvizere nekuenzanisa hunhu hutatu hwekunzwa kweruoko hwekuti kutsetseka, kuomarara uye kupfava.
Kuyedzwa kwekusimba kwemavara kwemachira akadhindwa
(1) Kuedza kusimba kwemavara kusvika pakukwesha
Edza zvinoenderana neGB/T 3920-2008 "Kusimba kwemavara kusvika pakukwesha bvunzo yekusimba kwemavara emachira".
(2) Kuedza kusimba kwemavara kusvika pakusuka
Edza zvinoenderana neGB/T 3921.3-2008 “Kuedza kusimba kwemavara kusvika pakusipo kwemavara”.
Zviri mukati mepakutanga zvakapfava/%
CMC
HEC
HEMCC
SA
Kuchinja kwehukobvu hwemhando ina dzemapesita ekutanga ane zviri mukati zvakasimba
zvinoti sodium alginate (SA), carboxymethyl cellulose (CMC), hydroxyethyl cellulose (HEC) uye
Makori e viscosity emhando ina dzema pastes ekutanga e hydroxyethyl carboxymethyl cellulose (HECMC) sechikonzero chehuwandu hwakasimba.
, kusimba kwemapaste mana ekutanga kwakawedzera nekuwedzera kwehuwandu hwakasimba, asi hunhu hwemapaste mana ekutanga hwakanga husina kufanana, pakati pawo SA
Hunhu hwekunamatira hweCMC neHECMC ndihwo hwakanakisa, uye hunhu hwekunamatira hweHEC ndihwo hwakaipisisa.
Makori ekushanda kwerheological emhando ina dzepakutanga akayerwa neMCR301 rotational rheometer.
- Kukombama kwe viscosity zvichienderana nekukasira kwekuchekwa kwechinhu. Kukasira kwezvimedu zvina zvepakutanga kwakawedzera nekasira kwekuchekwa kwechinhu.
kuwedzera nekudzikira, SA, CMC, HEC neHECMC zvese zvinwiwa zvepseudoplastic. Tafura 4.3 PVI kukosha kwemhando dzakasiyana dzepastes dzisina kubikwa
Rudzi rwepaste isina kubikwa SA CMC HEC HECMC
Kukosha kwePVI 0.813 0.526 0.621 0.726
Zvinogona kuonekwa kubva paTafura 4.3 kuti indekisi ye viscosity yekudhinda yeSA neHECMC yakakura uye viscosity yechimiro idiki, kureva kuti, paste yekutanga yekudhinda
Nekusimba kwakaderera kwekuchekwa, mwero wekuchinja kwe viscosity mudiki, uye zvakaoma kusangana nezvinodiwa zve rotary screen uye flat screen printing; nepo HEC neCMC
Nhamba ye viscosity yekudhinda yeCMC inongova 0.526, uye viscosity yayo yechimiro yakakura, kureva kuti, paste yekudhinda yekutanga ine simba rakaderera rekuchekerera.
Pasi pechiito ichi, mwero wekuchinja kwe viscosity uri pakati nepakati, izvo zvinogona kusangana zviri nani nezvinodiwa zve rotary screen uye flat screen printing, uye zvinogona kukodzera rotary screen printing ine mesh nhamba yakakwira.
Zviri nyore kuwana mapatani akajeka nemitsetse. Viscosity/mPa·s
Makoridho eRheological e 1% solids mbishi pastes ina
Rudzi rwepaste isina kubikwa SA CMC HEC HECMC
h/cm 0.33 0.36 0.41 0.39
Mhedzisiro yekuedzwa kwe1%SA, 1%CMC, 1%HEC uye 1%HECMC original paste yakachengetwa nemvura.
Zvakaonekwa kuti SA ndiyo yaikwanisa kuchengeta mvura, ichiteverwa neCMC, uye zvakatoipa neHECMC neHEC.
Kuenzanisa Kuenderana Kwemakemikari
Kuchinja kwe viscosity yekutanga ye paste yeSA, CMC, HEC neHECMC
Rudzi rwepaste isina kubikwa SA CMC HEC HECMC
Kusviba/mPa·s
Kusviba mushure mekuwedzera urea/mPa
Kusviba mushure mekuwedzera munyu unodzivirira kusvibiswa kwemavara S/mPa s
Kusviba mushure mekuwedzera sodium bicarbonate/mPa
Kupenya kukuru kwepaste yeSA, CMC, HEC neHECMC kunosiyana nekuwedzera kukuru kutatu: urea, munyu unodzivirira kutsvuka kwemavara S uye
Kuchinja kwekuwedzera sodium bicarbonate kunoratidzwa mutafura. , kuwedzerwa kwezvinhu zvitatu zvikuru, kune paste yekutanga
Mwero wekuchinja kwe viscosity unosiyana zvikuru. Pakati pavo, kuwedzerwa kweurea kunogona kuwedzera viscosity ye paste yekutanga neinenge 5%, izvo zvinogona kunge
Izvi zvinokonzerwa nekushanda kweurea zvakanaka uye kunhuhwirira kwayo; uye munyu weS unodzivirira kutsvuka unowedzerawo kusimba kwepaste yekutanga, asi hauna simba rakawanda;
Kuwedzerwa kwe sodium bicarbonate kwakaderedza zvakanyanya viscosity ye paste yekutanga, pakati payo CMC neHEC zvakaderera zvakanyanya, uye viscosity yeHECMC/mPa·s.
66
Chechipiri, kuenderana kweSA kuri nani.
SA CMC HEC HECMC
-15
-10
-5
05
Urea
Munyu unodzivirira kusviba S
sodium bicarbonate
Kuenderana kweSA, CMC, HEC neHECMC stock pastes nemakemikari matatu
Kuenzanisa kwekugadzikana kwekuchengetedza
Kupararira kwe viscosity yezuva nezuva yemhando dzakasiyana dzemapesiti asina kubikwa
Rudzi rwepaste isina kubikwa SA CMC HEC HECMC
Kupararira/% 8.68 8.15 8. 98 8.83
ndiyo mwero wekupararira kweSA, CMC, HEC uye HECMC pasi pekusimba kwezuva nezuva kwemapastes mana ekutanga, kupararira
Kana kukosha kwedhigirii kukaderera, kugadzikana kwekuchengetedza kwepaste yekutanga inoenderana kuri nani. Zvinogona kuonekwa kubva patafura kuti kugadzikana kwekuchengetedza kwepaste mbishi yeCMC kwakanaka kwazvo.
Kugadzikana kwekuchengetwa kweHEC neHECMC mbishi paste kwakaderera, asi musiyano wacho hauna kukosha.
Nguva yekutumira: Gunyana-29-2022