Hydroxyethyl cellulose (HEC) ndi yoyera kapena yopepuka yachikasu, yopanda fungo, yopanda poizoni kapena yolimba, yopangidwa ndi ma linter a thonje yaiwisi kapena zamkati zonyowa zoviikidwa mu 30% yamadzimadzi amchere, yotengedwa ndikukanikizidwa patatha theka la ola, Finyani mpaka chiŵerengero. madzi amchere amafika pa 1: 2.8, ndiye kuphwanya. Imakonzedwa ndi etherification reaction ndipo ndi ya non-ionic soluble cellulose ethers. Hydroxyethyl cellulose ndi yofunika kwambiri mu utoto wa latex. Tiyeni tiwone momwe tingagwiritsire ntchito hydroxyethyl cellulose HEC mu utoto wa latex ndi njira zopewera.
1. Okhala ndi chakumwa cha mayi kuti agwiritse ntchito: choyamba gwiritsani ntchito hydroxyethyl cellulose HEC pokonzekera mowa wa mayi wochuluka kwambiri, ndiyeno muwonjezere ku mankhwalawo. Ubwino wa njirayi ndikuti umakhala ndi kusinthasintha kwakukulu ndipo ukhoza kuwonjezeredwa mwachindunji ku mankhwala omalizidwa, koma ayenera kusungidwa bwino. Masitepe a njirayi ndi ofanana ndi masitepe ambiri mu njira 2; kusiyana ndi kuti palibe chifukwa mkulu-kumeta ubweya agitator, ndi ena agitators ndi mphamvu zokwanira kusunga mapadi hydroxyethyl uniformly omwazika mu yankho akhoza kupitilizidwa popanda kusiya Kusonkhezera mpaka kwathunthu kusungunuka mu njira viscous. Komabe, ziyenera kudziwidwa kuti fungicide iyenera kuwonjezeredwa ku mowa wa amayi posachedwa.
2. Onjezani mwachindunji panthawi yopanga: njira iyi ndi yosavuta ndipo imatenga nthawi yochepa kwambiri. Onjezani madzi oyera pachidebe chachikulu chokhala ndi chosakaniza chometa ubweya wambiri. Yambani kugwedezeka mosalekeza pa liwiro lotsika ndikusefa pang'onopang'ono hydroxyethyl cellulose mu yankho mofanana. Pitirizani kusonkhezera mpaka particles zonse zilowerere. Kenaka yikani zotetezera ndi zina zowonjezera. Monga inki, dispersing zothandizira, ammonia madzi, etc. Muziganiza mpaka onse hydroxyethyl mapadi HEC kusungunuka kwathunthu (kukhuthala kwa yankho kumawonjezera mwachionekere) ndiyeno kuwonjezera zigawo zina mu chilinganizo cha anachita.
Kusamalitsa;
(1) Pogwiritsira ntchito high-viscosity hydroxyethyl cellulose HEC, ndende ya mowa wa mayi sayenera kupitirira 2.5-3% (ndi kulemera kwake), mwinamwake mowa wa amayi udzakhala wovuta kupirira.
(2) Isanayambe komanso itatha kuwonjezera hydroxyethyl cellulose HEC, iyenera kugwedezeka mosalekeza mpaka yankho likuwonekera bwino komanso lomveka bwino.
(3) Momwe mungathere, onjezani antifungal wothandizira pasadakhale.
(4) Kutentha kwa madzi ndi pH mtengo wa madzi zili ndi ubale woonekeratu ndi kusungunuka kwa cellulose ya hydroxyethyl, kotero chisamaliro chapadera chiyenera kulipidwa.
(5) Osawonjezera zinthu za alkaline kusakaniza ufa wa hydroxyethyl cellulose usanavidwe ndi madzi. Kukweza pH pambuyo pakuviika kumathandizira kusungunuka.
(6) Iyenera kusefedwa pang'onopang'ono mu thanki yosanganikirana, ndipo musawonjezere zochulukirapo kapena kuwonjezera mwachindunji cellulose ya hydroxyethyl yomwe yapanga zotupa ndi mipira mu thanki yosakaniza.
Zinthu zofunika zomwe zimakhudza kukhuthala kwa utoto wa latex:
1 Kuwonongeka kwa thickener ndi tizilombo.
2 Popanga utoto, kaya kutsatizana kowonjezera kowonjezera ndikolondola.
3 Kaya kuchuluka kwa activator yapamtunda ndi kuchuluka kwa madzi mumtundu wa utoto ndizoyenera.
4 Chiŵerengero cha kuchuluka kwa zowonjezera zina zachilengedwe ku kuchuluka kwa hydroxyethyl cellulose mu mapangidwe a utoto.
5 Pamene latex aumbike, zili zotsalira catalysts ndi oxides ena.
6 Kutentha kumakhala kokwera kwambiri panthawi yobalalika chifukwa cha kugwedezeka kwakukulu.
7 Kuchuluka kwa thovu la mpweya kumakhalabe mu utoto, m’pamenenso kukhuthala kwake kumakwera.
Kukhuthala kwa hydroxyethyl cellulose HEC kumasintha pang'ono mu pH ya 2-12, koma kukhuthala kumachepera kuposa izi. Lili ndi katundu wa thickening, kuyimitsa, kumanga, emulsifying, dispersing, kusunga chinyezi ndi kuteteza colloid. Mayankho osiyanasiyana mamasukidwe akayendedwe osiyanasiyana akhoza kukonzekera. Kusakhazikika pansi pa kutentha kwabwino ndi kupanikizika, kupewa chinyezi, kutentha, ndi kutentha kwakukulu, ndipo kumakhala ndi mchere wabwino kwambiri wosungunuka ku dielectrics, ndipo njira yake yamadzimadzi imaloledwa kukhala ndi mchere wambiri ndipo imakhala yokhazikika.
Nthawi yotumiza: Feb-14-2023