IHydroxypropyl methyl cellulose ihlukaniswe yaba izinhlobo eziningana, futhi yini umehluko ekusetshenzisweni kwayo?
I-HPMC ingahlukaniswa ngezinhlobo ezisheshayo nezincibilikayo. Imikhiqizo esheshayo ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunayo i-viscosity, ngoba i-HPMC ihlakazekile emanzini futhi ayincibiliki ngempela. Ngemva kwemizuzu emi-2 (ukunyakazisa), i-viscosity yoketshezi ikhula kancane kancane, yakha i-viscous colloid esobala. Imikhiqizo encibilikayo eshisayo ingahlakazeka ngokushesha emanzini ashisayo futhi inyamalale emanzini ashisayo lapho ihlangene emanzini abandayo. Lapho izinga lokushisa lehla ekushiseni okuthile (ngokusho kokushisa kwejeli komkhiqizo), i-viscosity ibonakala kancane kuze kube yilapho kwakheka i-viscous colloid ebonakalayo.
Ungahlulela kanjani ikhwalithi ye-hydroxypropyl methyl cellulose kalula nangokunembile?
Ubumhlophe. Nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC kulula ukuyisebenzisa yini, futhi uma ama-ejenti amhlophe engezwa enqubweni yokukhiqiza, izothinta ikhwalithi yayo, imikhiqizo eminingi emihle inobumhlophe obuhle.
Ukulunga: ukucoleka kwe-HPMC kuvamise ukuba yi-80 mesh kanye ne-100 mesh, kanye ne-120 mesh mincane. Ubuhle obuhle, bungcono.
Ukudlulisa ukukhanya: ngemuva kokuthi i-HPMC ifakwe emanzini ukuze yakhe i-colloid esobala, bheka ukudlulisa ukukhanya kwayo. Uma kukhulu ukudluliswa kokukhanya, kungcono. Kusho ukuthi kukhona izinto ezincane ezingancibiliki kuyo. Ukudluliswa kwe-reactor eqondile ngokuvamile kuhle, futhi lokho kwe-reactor evundlile kubi kakhulu. Kodwa-ke, akusho ukuthi ikhwalithi ye-reactor eqondile ingcono kunaleyo ye-reactor evundlile. Kunezici eziningi ezinquma ikhwalithi yomkhiqizo.
Amandla adonsela phansi athize: uma amandla adonsela phansi athile emakhulu, anzima kakhulu, angcono kakhulu. Ngokuvamile, kungenxa yokuthi okuqukethwe kwe-hydroxypropyl kuyo kuphezulu. Uma okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi kungcono.
Amandla adonsela phansi athize: uma amandla adonsela phansi athile emakhulu, anzima kakhulu, angcono kakhulu. Ngokuvamile, kungenxa yokuthi okuqukethwe kwe-hydroxypropyl kuyo kuphezulu. Uma okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi kungcono.
yiziphi izindlela zokuchithwa kwe-hydroxypropyl methyl cellulose?
Wonke amamodeli angangezwa ezintweni ngokusebenzisa indlela yokuxuba okomile;
Uma idinga ukungezwa ngokuqondile kwisisombululo se-aqueous ekamelweni lokushisa, kungcono ukusebenzisa uhlobo lokuhlakazeka kwamanzi abandayo. Ngokuvamile, ingaqiniswa phakathi kwemizuzu eyi-10-90 ngemuva kokwengeza (ukugqugquzela)
Amamodeli avamile angancibilika ngemva kokuxuba nokuhlakazeka ngamanzi ashisayo, engeza amanzi abandayo, ukugoqa nokupholisa;
Uma i-caking kanye nokugoqa kwenzeka ngesikhathi sokuchithwa, kungenxa yokuxuba okunganele noma amamodeli ajwayelekile afakwa ngokuqondile emanzini abandayo. Ngalesi sikhathi, kufanele ixutshwe ngokushesha.
Uma ama-bubbles ekhiqizwa ngesikhathi sokuchithwa, angasuswa ngokuma amahora angu-2-12 (isikhathi esiqondile sincike ekuvumelaneni kwesixazululo), ukuhlanza, ukucindezela nezinye izindlela, noma ukwengeza inani elifanele le-defoamer.
Iyiphi indima edlalwa yi-hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, nokuthi ngabe kukhona i-chemistry?
Ku-putty powder, idlala izindima ezintathu: ukuqina, ukugcinwa kwamanzi nokwakhiwa. Ukuqina, i-cellulose ingajiya, idlale indima yokulengiswa, igcine iyunifomu yesisombululo iphezulu naphansi, futhi imelane nokuwohloka. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, futhi usize i-lime calcium ukuthi isabele ngaphansi kwesenzo samanzi. Ukwakhiwa: i-cellulose inomphumela wokugcoba, ongenza i-putty powder ibe nokusebenza okuhle. I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusiza.
Lihlobene nani izinga lokushisa lejeli le-hydroxypropyl methyl cellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxyl. Ukuncipha kokuqukethwe kwe-methoxyl, izinga lokushisa lejeli liphezulu.
ingabe kukhona ubudlelwano phakathi kokuwa kwe-putty powder kanye ne-hydroxypropyl methyl cellulose?
Kubalulekile!!! I-HPMC inokugcinwa kwamanzi okungekuhle, okuzodala ukulahleka kwempushana.
Ukusetshenziswa kwe-hydroxypropyl methyl cellulose ku-putty powder, siyini isizathu se-bubbles ku-putty powder?
I-HPMC idlala izindima ezintathu ku-putty powder: ukuqina, ukugcinwa kwamanzi nokwakha. Izizathu zamabhamuza zimi kanje:
Kufakwa amanzi amaningi kakhulu.
Uma ukhuhla olunye ungqimba ongqimbeni olungezansi ngaphambi kokuba lome, kulula futhi ukuqhuqha.
Isikhathi sokuthumela: Sep-27-2022