1. Siyini isibizo se-hydroxypropyl methylcellulose?
——Impendulo: Hydroxypropyl Methyl Cellulose, IsiNgisi: Hydroxypropyl Methyl Cellulose Isifinyezo: HPMC noma MHPC Isibizo: Hypromellose;I-Cellulose Hydroxypropyl Methyl Ether;I-Hypromellose, i-Cellulose, i-2-hydroxypropylmethyl Cellulose ether.I-Cellulose hydroxypropyl methyl ether Hyprolose.
2. Iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: I-HPMC isetshenziswa kakhulu ezintweni zokwakha, okokuhlanganisa, ama-synthetic resin, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni.I-HPMC ingahlukaniswa ngebanga lokwakha, ibanga lokudla kanye nebanga lezemithi ngokwenhloso.Njengamanje, iningi lemikhiqizo yasekhaya isezingeni lokwakha.Ebangeni lokwakha, i-putty powder isetshenziswa ngenani elikhulu, cishe i-90% isetshenziselwa i-putty powder, kanti enye isetshenziselwa udaka lukasimende neglue.
3. Kunezinhlobo ezimbalwa ze-hydroxypropyl methylcellulose (HPMC), futhi yimuphi umehluko ekusetshenzisweni kwazo?
——Impendulo: I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo lokuqedwa okushisayo.Imikhiqizo yohlobo olusheshayo ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini.Ngalesi sikhathi, uketshezi alunayo i-viscosity ngoba i-HPMC ihlakazekile emanzini ngaphandle kokuhlakazeka kwangempela.Cishe imizuzu emi-2, i-viscosity yoketshezi iyanda kancane kancane, yakha i-viscous colloid esobala.Imikhiqizo encibilikayo eshisayo, lapho ihlangene namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo futhi inyamalale emanzini ashisayo.Lapho izinga lokushisa lehlela ezingeni elithile lokushisa, i-viscosity izovela kancane kancane ize yakhe i-viscous colloid ebonakalayo.Uhlobo lwe-hot-melt lungasetshenziswa kuphela ku-putty powder nodaka.Ku-glue ewuketshezi nopende, kuzoba nesenzakalo sokuqoqa futhi ngeke sisetshenziswe.Uhlobo olusheshayo lunohlu olubanzi lwezinhlelo zokusebenza.Ingasetshenziswa ku-putty powder nodaka, kanye ne-glue ewuketshezi nopende, ngaphandle kokuphikisana.
4. Ungakhetha kanjani i-hydroxypropyl methylcellulose (HPMC) efanelekile ngezinhloso ezahlukene?
——Impendulo :: Ukusetshenziswa kwe-putty powder: Izidingo ziphansi, futhi i-viscosity yi-100,000, eyanele.Okubalulekile wukugcina amanzi kahle.Ukusetshenziswa kodaka: izidingo eziphakeme, i-viscosity ephezulu, i-150,000 ingcono.Ukusetshenziswa kweglue: imikhiqizo esheshayo ene-viscosity ephezulu iyadingeka.
5. Yini okufanele inakwe ekusetshenzisweni kwangempela kobudlelwane phakathi kwe-viscosity nezinga lokushisa le-HPMC?
——Impendulo: I-viscosity ye-HPMC ilingana ngokuphambene nezinga lokushisa, okusho ukuthi, i-viscosity iyanda njengoba izinga lokushisa lincipha.I-viscosity yomkhiqizo esivame ukubhekisela kuwo ibhekisela kumphumela wokuhlolwa wesisombululo sawo samanzi esingu-2% ezingeni lokushisa elingu-20 degrees Celsius.
Ekusetshenzisweni okusebenzayo, kufanele kuqashelwe ukuthi ezindaweni ezinomehluko omkhulu wokushisa phakathi kwehlobo nobusika, kunconywa ukusebenzisa i-viscosity ephansi kakhulu ebusika, evumelana kakhulu nokwakhiwa.Uma kungenjalo, lapho izinga lokushisa liphansi, i-viscosity ye-cellulose izokhula, futhi ukuzwa kwesandla kuyoba nzima lapho kukhuhla.
I-viscosity ephakathi: 75000-100000 ikakhulukazi esetshenziselwa i-putty
Isizathu: ukugcinwa kahle kwamanzi
I-viscosity ephezulu: 150000-200000 Ikakhulu isetshenziselwa i-polystyrene izinhlayiyana ezishisayo zokufakwa kwe-rubber powder kanye ne-vitrified microbead thermal insulation mortar.
Isizathu: I-viscosity iphezulu, udaka akulula ukuwa, ukugoqa, futhi ukwakhiwa kuyathuthukiswa.
6. I-HPMC iyi-ether ye-cellulose engeyona i-ionic, ngakho-ke yini engeyona i-ionic?
——Impendulo: Ngokwemigomo ye-layman, okungezona ama-ion yizinto ezinganyunisi emanzini.I-ionization isho inqubo lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajiwe akwazi ukuhamba ngokukhululeka ku-solvent ethile (njengamanzi, utshwala).Isibonelo, i-sodium chloride (NaCl), usawoti esiwudla nsuku zonke, uncibilika emanzini futhi u-ionize ukukhiqiza ama-ion sodium (Na+) ashajwa kahle nama-chloride ions (Cl) ashajwe ngokukhululeka.Okusho ukuthi, lapho i-HPMC ifakwa emanzini, ngeke ihlukane ibe ama-ion ashajiwe, kodwa ibe khona ngendlela yama-molecule.
Isikhathi sokuthumela: Apr-26-2023