I-Methylcellulose (MC) yi-derivative cellulose derivative ene-thickening, ifilimu-ifom, ukuzinzisa kunye nezinye iimpawu. Ngokuqhelekileyo isetyenziselwa ukutya, amayeza, ukwakhiwa, izimonyo kunye nezinye iindawo. Ukuziphatha kwayo kokuchithwa kwamanzi kuyingqayizivele kwaye kulula ukwenza isisombululo se-colloidal, ngoko ke indlela yokuxuba echanekileyo ibaluleke kakhulu kwimpembelelo yayo.
1. Iimpawu ze-methylcellulose
I-Methylcellulose ayinyibiliki lula kwiqondo lokushisa, kwaye ukunyibilika kwayo kuchaphazeleka kakhulu bubushushu. Emanzini abandayo, i-methylcellulose inokwenza isisombululo se-homogeneous ngokusasaza ngokuthe ngcembe; kodwa emanzini ashushu, kuya kukhula ngokukhawuleza kunye nejeli. Ngoko ke, ukulawula ukushisa kubaluleke kakhulu xa uxuba i-methylcellulose namanzi.
2. Ukulungiselela
I-Methylcellulose: Ifumaneka kubaboneleli bemathiriyeli yekhemikhali ekrwada okanye iilabhoratri.
Amanzi: Kucetyiswa ukuba kusetyenziswe amanzi adibeneyo okanye ahlanjululweyo ukuze ugweme ukungcola kumanzi anzima ekuchaphazeleni ukuchithwa kwe-methylcellulose.
Izixhobo zokuxuba: Ngokuxhomekeke kwiimfuno zakho, umxube wezandla olula, umxube omncinci wesantya esiphezulu, okanye izixhobo zokuxuba i-industrial zingasetyenziswa. Ukuba ngumsebenzi omncinci welebhu, kuyacetyiswa ukuba usebenzise i-magnetic stirrer.
3. Inyathelo lokuxuba
Indlela yoku-1: Indlela yokusasazwa kwamanzi abandayo
I-premix yamanzi abandayo: Thatha umlinganiselo ofanelekileyo wamanzi abandayo (kungcono i-0-10 ° C) kwaye uyifake kwisitya sokuxuba. Qinisekisa ukuba ubushushu bamanzi bungaphantsi kwama-25°C.
Kancinci ukongeza i-methylcellulose: Kancinci uthele i-methylcellulose powder emanzini abandayo, uvuselele ngelixa ugalela. Kuba i-methylcellulose ithande ukudumba, ukuyongeza ngokuthe ngqo emanzini kunokwenza amaqhuma, achaphazele nokusasazeka. Ke ngoko, isantya sokongeza kufuneka silawulwe ngononophelo ukuphepha ukongeza inani elikhulu lepowder kwangoko.
Xuba kakuhle: Sebenzisa umxube ngesantya esiphakathi okanye esisezantsi ukuze usasaze ngokupheleleyo i-methylcellulose emanzini. Ixesha lokuvuselela lixhomekeke kwi-viscosity yokugqibela yesisombululo esifunwayo kunye nohlobo lwezixhobo, kwaye ngokubanzi kuthatha imizuzu emi-5-30. Qinisekisa ukuba akukho zigaqa okanye iziqhumiso zomgubo.
Ukuvuvukala: Ngelixa uvuselela, i-methylcellulose iya kuthatha kancane amanzi kwaye idumbe, yenze isisombululo se-colloidal. Le nkqubo ingathatha ixesha, kuxhomekeke kuhlobo kunye nobungakanani be-methylcellulose esetyenzisiweyo. I-viscosity ephezulu ye-methylcellulose ithatha ixesha elide.
Masihlale sivuthwe: Emva kokuba ukuvuselela kugqityiwe, kungcono ukuba umxube uhlale iiyure ezimbalwa okanye ubusuku bonke ukuqinisekisa ukuba i-methylcellulose inyibilika ngokupheleleyo kwaye idumbile ngokupheleleyo. Oku kunokuphucula ngakumbi i-homogeneity yesisombululo.
Indlela yesi-2: Indlela emibini yamanzi ashushu nabandayo
Le ndlela ifanelekile kwi-methylcellulose ye-viscous kakhulu enzima ukuyisasaza ngokuthe ngqo emanzini abandayo.
I-premix yamanzi ashushu: Ukushisa inxalenye yamanzi kwi-70-80 ° C, uze udibanise ngokukhawuleza emanzini ashushu kwaye ungeze i-methylcellulose. Ngeli xesha, ngenxa yokushisa okuphezulu, i-methylcellulose iya kwanda ngokukhawuleza kodwa ayiyi kuchithwa ngokupheleleyo.
Ukuhlanjululwa kwamanzi abandayo: Ngelixa uqhubeka ushukumisa isisombululo sobushushu obuphezulu, kancinane wongeza amanzi aseleyo abandayo de iqondo lobushushu lesisombululo lehle liye kutsho kubushushu obuqhelekileyo okanye ngaphantsi kwe-25°C. Ngale ndlela, i-methylcellulose evuvukileyo iya kuchithwa emanzini abandayo kwaye yenze isisombululo esizinzileyo se-colloidal.
Ukuvuselela kunye nokuyeka ukuma: Qhubeka uvuselela emva kokupholisa ukuqinisekisa ukuba isisombululo siyafana. Emva koko umxube uyekwe ukuba uhlale de unyibilike ngokupheleleyo.
4. Izilumkiso
Ubushushu bokulawula: Ukunyibilika kwe-methylcellulose kubuthathaka kakhulu kubushushu. Ngokuqhelekileyo isasazwa kakuhle emanzini abandayo, kodwa inokwenza ijeli engalinganiyo emanzini ashushu. Ukuze ugweme le meko, kuyacetyiswa ukuba kusetyenziswe indlela yokusasazwa kwamanzi abandayo okanye indlela emibini eshushu nabandayo.
Gwema i-clumping: Ekubeni i-methylcellulose iyancipha kakhulu, ukugalela inani elikhulu lomgubo ngokuthe ngqo emanzini kuya kubangela ukuba umphezulu wande ngokukhawuleza kwaye wenze i-clumps ngaphakathi kwephakheji. Oku akuchaphazeli kuphela umphumo wokutshatyalaliswa, kodwa kunokukhokelela kwi-viscosity engalinganiyo yemveliso yokugqibela. Ngoko ke, qiniseka ukuba wongeza umgubo ngokukhawuleza kwaye uvuselele kakuhle.
Isantya esishukumisayo: Isantya esiphezulu sinokwazisa ngokulula inani elikhulu lamaqamu, ngakumbi kwizisombululo ezine-viscosity ephezulu. I-Bubbles iya kuchaphazela ukusebenza kokugqibela. Ngoko ke, ukusebenzisa i-low-speed ukuvuselela kulukhetho olungcono xa ufuna ukulawula i-viscosity okanye i-bubble volume.
Ukugxilwa kwe-methylcellulose: Ukuxinwa kwe-methylcellulose emanzini kunempembelelo enkulu ekuchithweni kwayo kunye neepropati zesisombululo. Ngokuqhelekileyo, kwiindawo eziphantsi (ngaphantsi kwe-1%), isisombululo sincinci kwaye kulula ukusishukumisa. Kwiindawo eziphezulu (ezinkulu kune-2%), isisombululo siya kuba ne-viscous kakhulu kwaye sidinga amandla anamandla xa uvuselela.
Ixesha lokuma: Ngexesha lokulungiswa kwesisombululo se-methylcellulose, ixesha lokuma libalulekile. Oku akuvumeli kuphela i-methylcellulose ukuba ichithwe ngokupheleleyo, kodwa inceda amaqamu kwisisombululo ukuba anyamalale ngokwemvelo, ukuphepha iingxaki ze-bubble kwizicelo ezilandelayo.
5. Izakhono ezikhethekileyo kwisicelo
Kwishishini lokutya, i-methylcellulose idla ngokusetyenziselwa ukwenza i-thickeners, i-stabilizers okanye i-colloids, njenge-ayisikrimu, isonka, iziphuzo, njl. Kule zicelo, inyathelo lokuxuba i-methylcellulose ngamanzi lichaphazela ngqo umlomo kunye nokuthungwa kwemveliso yokugqibela. Isixa sokusetyenziswa kwebakala lokutya i-methylcellulose lincinci ngokubanzi, kwaye ingqwalasela eyodwa kufuneka ihlawulwe kumlinganiselo ochanekileyo kunye nokudibanisa ngokuthe ngcembe.
Kwintsimi yamachiza, i-methylcellulose idla ngokusetyenziswa njenge-agent echithayo kwiipilisi okanye njengomphathi weziyobisi. Kule meko, ukulungiswa kweziyobisi kufuna isisombululo esiphezulu kakhulu se-homogeneity kunye nokuzinza, ngoko kuyacetyiswa ukuba ulawule umgangatho wokugqibela wemveliso ngokwandisa ngokuthe ngcembe i-viscosity kunye nokuphucula iimeko ezikhuthazayo.
Ukuxuba i-methylcellulose ngamanzi yinkqubo efuna umonde kunye nobuchule. Ngokulawula ubushushu bamanzi, umyalelo wokongezwa kunye nesantya esishukumisayo, isisombululo esifanayo kunye nesigxina se-methylcellulose sinokufumaneka. Ingaba yindlela yokusasazwa kwamanzi abandayo okanye indlela emibini eshushu nabandayo, undoqo kukuphepha ukugquma komgubo kunye nokuqinisekisa ukudumba okwaneleyo kunye nokuphumla.
Ixesha lokuposa: Sep-30-2024