I-Methylcellulose (MC) iphuma ku-cellulose encibilika emanzini ngokujiya, ukwenza ifilimu, ukuzinzisa nezinye izakhiwo. Isetshenziswa kakhulu ekudleni, emithini, ekwakhiweni, kwezimonyo nakweminye imikhakha. Ukuziphatha kwayo kokuhlakazeka emanzini kuyingqayizivele futhi kulula ukwenza isisombululo se-colloidal, ngakho-ke indlela yokuxuba efanele ibalulekile emphumeleni wayo.
1. Izici ze-methylcellulose
I-Methylcellulose ayincibiliki kalula ekamelweni lokushisa, futhi ukuncibilika kwayo kuthinteka kakhulu izinga lokushisa. Emanzini abandayo, i-methylcellulose ingenza isisombululo se-homogeneous ngokuhlakazeka kancane kancane; kodwa emanzini ashisayo, izovuvuka ngokushesha futhi ijeli. Ngakho-ke, ukulawula izinga lokushisa kubaluleke kakhulu lapho uhlanganisa i-methylcellulose namanzi.
2. Ukulungiselela
I-Methylcellulose: Itholakala kubahlinzeki bempahla yamakhemikhali noma amalabhorethri.
Amanzi: Kunconywa ukuthi kusetshenziswe amanzi ahlutshiwe noma akhishwe ukuze kugwenywe ukungcola emanzini aqinile ekuthinteni ukuchithwa kwe-methylcellulose.
Imishini Yokuxuba: Kuye ngezidingo zakho, i-mixer elula yezandla, i-mixer encane enesivinini esikhulu, noma imishini yokuxuba yezimboni ingasetshenziswa. Uma kuwumsebenzi waselabhorethri wezinga elincane, kutuswa ukusebenzisa i-stirrer kazibuthe.
3. Isinyathelo sokuxuba
Indlela yoku-1: Indlela yokusabalalisa amanzi abandayo
I-premix yamanzi abandayo: Thatha inani elifanele lamanzi abandayo (mhlawumbe 0-10°C) uwafake esitsheni sokuxuba. Qiniseka ukuthi izinga lokushisa kwamanzi lingaphansi kuka-25°C.
Faka kancane i-methylcellulose: Kancane kancane uthele i-methylcellulose powder emanzini abandayo, ugqugquzele ngenkathi uthela. Njengoba i-methylcellulose ijwayele ukunqwabelana, ukuyengeza ngokuqondile emanzini kungase kwakheke izigaxa, kuthinte ngisho nokuhlakazeka. Ngakho-ke, isivinini sokwengeza sidinga ukulawulwa ngokucophelela ukugwema ukwengeza inani elikhulu lempushana ngokushesha.
Hlanganisa kahle: Sebenzisa i-mixer ngesivinini esiphakathi noma esiphansi ukuze uhlakaze ngokugcwele i-methylcellulose emanzini. Isikhathi sokuvuselela sincike ku-viscosity yesixazululo sokugcina oyifunayo kanye nohlobo lwemishini, futhi ngokuvamile kuthatha imizuzu engu-5-30. Qinisekisa ukuthi azikho izigaxa noma izigaxa zempushana.
Ukuvuvukala: Ngenkathi ishukumisa, i-methylcellulose izomunca kancane kancane amanzi futhi ivuvuke, yenze isixazululo se-colloidal. Le nqubo ingathatha isikhashana, kuye ngohlobo nenani le-methylcellulose esetshenzisiwe. I-viscosity ephezulu ye-methylcellulose ithatha isikhathi eside.
Vumela uhlale ukuze uvuthwe: Ngemva kokuqeda ukugoqa, kungcono ukuyiyeka ingxube ihlale amahora ambalwa noma ubusuku bonke ukuze uqinisekise ukuthi i-methylcellulose ihlakazeke ngokuphelele futhi ivuvuke ngokugcwele. Lokhu kungathuthukisa ngokwengeziwe i-homogeneity yesixazululo.
Indlela yesi-2: Indlela ekabili yamanzi ashisayo nabandayo
Le ndlela ifanele i-viscous methylcellulose okunzima ukuyihlakaza ngokuqondile emanzini abandayo.
I-premix yamanzi ashisayo: Shisisa ingxenye yamanzi ku-70-80 ° C, bese uphuthuma ngokushesha emanzini ashisayo bese wengeza i-methylcellulose. Ngalesi sikhathi, ngenxa yokushisa okuphezulu, i-methylcellulose izokhula ngokushesha kodwa ngeke incibilike ngokuphelele.
Ukuhlanjululwa kwamanzi abandayo: Ngenkathi uqhubeka nokunyakazisa isisombululo sezinga lokushisa eliphezulu, kancane kancane wengeze amanzi abandayo asele kuze kube yilapho izinga lokushisa lekhambi lehla liye ezingeni lokushisa elivamile noma ngaphansi kuka-25°C. Ngale ndlela, i-methylcellulose evuvukile izoncibilika emanzini abandayo futhi yakhe isixazululo esizinzile se-colloidal.
Ukunyakazisa nokuyeka ukuma: Qhubeka ushukumisa ngemva kokupholisa ukuze uqinisekise ukuthi ikhambi lifana. Ingxube ibe isiyekwa ukuthi ihlale ize ichitheke ngokuphelele.
4. Izinyathelo zokuphepha
Lawula izinga lokushisa: Ukunyibilika kwe-methylcellulose kuzwela kakhulu izinga lokushisa. Ngokuvamile ihlakazeka kahle emanzini abandayo, kodwa ingase yakhe ijeli engalingani emanzini ashisayo. Ukuze ugweme lesi simo, kuvame ukutuswa ukusebenzisa indlela yokusabalalisa amanzi abandayo noma indlela ekabili eshisayo noma ebandayo.
Gwema ukunqwabelana: Njengoba i-methylcellulose imunca kakhulu, ukuthela inani elikhulu lempushana ngokuqondile emanzini kuzokwenza ukuthi ingaphezulu likhule ngokushesha futhi lenze ama-clumps ngaphakathi kwephakheji. Lokhu akuthinti kuphela umphumela wokuhlakazeka, kodwa kungase futhi kuholele ekubonakaleni okungalingani komkhiqizo wokugcina. Ngakho-ke, qiniseka ukuthi wengeza impushana kancane futhi ugovuze kahle.
Isivinini esishukumisayo: Ukushukumisa isivinini esikhulu kungethula kalula inani elikhulu lamabhamuza, ikakhulukazi ezixazululweni ezine-viscosity ephezulu. Amabhamuza azothinta ukusebenza kokugcina. Ngakho-ke, ukusebenzisa i-low-speed eshukumisayo kuyisinqumo esingcono uma udinga ukulawula i-viscosity noma ivolumu ye-bubble.
Ukugxila kwe-methylcellulose: Ukugxila kwe-methylcellulose emanzini kunethonya elikhulu ekuhlakazweni kwayo kanye nezakhiwo zesisombululo. Ngokuvamile, ekugxilweni okuphansi (ngaphansi kuka-1%), isisombululo sincane futhi kulula ukusishukumisa. Ekugxilweni okuphezulu (okungaphezulu kuka-2%), isisombululo sizoba ne-viscous kakhulu futhi sidinga amandla anamandla lapho sinyakaza.
Isikhathi sokuma: Ngesikhathi sokulungiswa kwesisombululo se-methylcellulose, isikhathi sokuma sibalulekile. Lokhu akuvumeli kuphela i-methylcellulose ukuthi incibilike ngokuphelele, kodwa futhi kusiza amabhamuza asesixazululo ukuba anyamalale ngokwemvelo, ukugwema izinkinga zebhamuza ezinhlelweni ezilandelayo.
5. Amakhono akhethekile ekusebenziseni
Embonini yokudla, i-methylcellulose ivame ukusetshenziselwa ukwenza ama-thickeners, stabilizers noma ama-colloid, afana ne-ayisikhilimu, isinkwa, iziphuzo, njll. Kulezi zicelo, isinyathelo sokuxuba i-methylcellulose ngamanzi sithinta ngokuqondile umlomo kanye nokuthungwa komkhiqizo wokugcina. Inani elisetshenziswayo le-methylcellulose yebanga lokudla ngokuvamile lincane, futhi ukunaka okukhethekile kufanele kukhokhwe ekukaleni okunembile kanye nokwengezwa kancane kancane.
Emkhakheni wemithi, i-methylcellulose ivame ukusetshenziswa njenge-ejenti ehlakazayo yamaphilisi noma njengomthwali wezidakamizwa. Kulokhu, ukulungiswa kwezidakamizwa kudinga isisombululo esiphezulu kakhulu se-homogeneity nokuzinza, ngakho-ke kunconywa ukulawula ikhwalithi yokugcina yomkhiqizo ngokwandisa kancane kancane i-viscosity nokwandisa izimo ezishukumisayo.
Ukuxuba i-methylcellulose namanzi kuyinqubo edinga isineke nekhono. Ngokulawula izinga lokushisa lamanzi, ukuhleleka kokwengeza kanye nesivinini esishukumisayo, isisombululo se-methylcellulose umfaniswano nezinzile singatholakala. Noma ngabe indlela yokusabalalisa amanzi abandayo noma indlela ekabili eshisayo noma ebandayo, okubalulekile ukugwema ukunqwabelana kwempushana futhi uqinisekise ukuvuvukala nokuphumula okwanele.
Isikhathi sokuthumela: Sep-30-2024