Okokuqala, ibanga le-glue yokwakha kufanele licabangele izinto zokusetshenziswa. Isizathu esiyinhloko sokwendlaleka kweglue yokwakha ukungahambisani phakathi kwe-acrylic emulsion ne-hydroxypropyl methylcellulose (HPMC). Okwesibili, ngenxa yesikhathi esinganele sokuxuba; kukhona futhi ukusebenza kabi kokuqina kweglue yokwakha. Ku-glue yokwakha, kufanele usebenzise i-cellulose esheshayo ye-hydroxypropyl (HPMC), ngoba i-HPMC ihlakazeka emanzini kuphela, ayincibiliki ngempela. Ngemuva kwemizuzu emi-2, i-viscosity yoketshezi yanda kancane, ikhiqiza isisombululo se-viscous colloidal esisobala ngokuphelele. Imikhiqizo encibilikayo eshisayo, lapho ifakwe emanzini abandayo, ingahlakazeka ngokushesha emanzini abilayo futhi inyamalale emanzini abilayo. Lapho izinga lokushisa lehlela ezingeni elithile lokushisa, i-viscosity ibonakala kancane kuze kube yilapho kukhiqizwa isisombululo se-viscous colloidal esisobala ngokuphelele. Umthamo onconywe kakhulu we-hydroxypropyl methylcellulose (HPMC) kuglue yokwakha ngu-2-4KG.
I-Hydroxypropyl methylcellulose (HPMC) inezinto ezibonakalayo ezizinzile kuzinto zokunamathisela ekwakhiweni, futhi inomphumela omuhle kakhulu wokukhipha isikhutha nokukhiya amanzi, futhi ngeke ithintwe izinguquko enanini le-pH. I-viscosity ingasetshenziswa phakathi kuka-100,000 no-200,000 s. Ekukhiqizeni, ukuphakama kwe-viscosity, kungcono. I-viscosity ilingana ngokuphambene namandla okucindezela. Ukuphakama kwe-viscosity, amandla okucindezela aphansi. Ngokuvamile, i-viscosity ye-100,000 s ifanelekile.
Xuba i-CMC namanzi bese wenza inhlama enodaka ukuze isetshenziswe kamuva. Lapho ufaka i-CMC yokunamathisela, engeza inani elithile lamanzi abandayo ku-batching tank ngomshini onyakazayo. Lapho umshini onyakazayo uqalwa, kancane kancane ufafaze i-carboxymethyl cellulose ethangini lokuhlanganisa, futhi uqhubeke ushukumisa, ukuze i-carboxymethyl cellulose namanzi kuhlanganiswe ngokuphelele, futhi i-carboxymethyl cellulose ichitheke ngokuphelele. Lapho kuhlakazwa i-CMC, kuvame ukudingekile ukuthi ihlakazeke ngokulinganayo futhi ixube ngokuqhubekayo, ukuze “kuvinjwe kangcono ukunqwabelana kanye nokuhlangana kwe-CMC ngemva kokuhlangana namanzi, futhi kunciphise inkinga yokuhlakazwa kwe-CMC” futhi kukhuphule izinga lokuqedwa kwe-CMC. .
Isikhathi sokuxuba asifani nesikhathi sokuthi i-CMC ichitheke ngokuphelele. yizincazelo ezi-2. Ngokuvamile, isikhathi sokuxuba sifushane kakhulu kunesikhathi sokuthi i-CMC ichithe ngokuphelele, kuya ngemininingwane. Isisekelo sokwahlulela isikhathi sokuxuba ukuthi lapho i-CMC ihlakazeka ngokulinganayo emanzini ngaphandle kwezigaxa ezisobala, ukuxuba kungamiswa, ukuze i-CMC namanzi kungene komunye nomunye ngaphansi kwezimo zedatha ezimile. Kunezizathu ezimbalwa zokunquma isikhathi esidingekayo sokuqedwa okuphelele kwe-CMC:
(1) I-CMC namanzi kuhlanganiswe ngokuphelele, futhi azikho izisetshenziswa zokuhlukanisa uketshezi oluqinile phakathi kwakho;
(2) I-paste ehlanganisiwe ilinganiswe kahle futhi ijwayelekile, inobuso obushelelezi nobushelelezi;
(3) I-paste ehlanganisiwe ayinawo umbala futhi ibonakala ngokuphelele, futhi azikho izinhlayiya ekunamathisele. Kuthatha amahora ayi-10 kuye kwangama-20 kusukela ngesikhathi lapho i-CMC ifakwa khona ethangini lokuhlanganisa futhi ixutshwe namanzi ize ichitheke ngokuphelele.
Isikhathi sokuthumela: Jan-13-2023