IHydroxypropyl Methylcellulose | I-HPMC |9004-65-3
Ukucaciswa komkhiqizo:
| Izinhlobo | 60JS | 65JS | 75JS |
| Okuqukethwe kwe-Methoxy(%) | 28-30 | 27-30 | 19-24 |
| Okuqukethwe kwe-Hydroxypropyl(%) | 7-12 | 4-7.5 | 4-12 |
| Izinga lokushisa lejeli(℃) | 58-64 | 62-68 | 70-90 |
| Amanzi(%) | ≤5 | ||
| Umlotha(Wt%) | ≤5 | ||
| PH inani | 4-8 | ||
| I-Viscosity(2%, 20℃, mpa.s) | 5-200000, kungabuye kucaciswe ngokuvumelana nezidingo zamakhasimende | ||
| Isigaba | Ukucaciswa | Ububanzi |
| I-viscosity ephansi kakhulu (mpa.s) | 5 | 3-7 |
| 10 | 8-12 | |
| 15 | 13-18 | |
| I-viscosity ephansi (mpa.s) | 25 | 20-30 |
| 50 | 40-60 | |
| 100 | 80-120 | |
| I-viscosity ephezulu (mpa.s) | 4000 | 3500-5600 |
| 12000 | 10000-14000 | |
| I-viscosity ephezulu kakhulu (mpa.s) | 20000 | 18000-22000 |
| 40000 | 35000-55000 | |
| 75000 | 70000-85000 | |
| 100000 | 90000-120000 | |
| 150000 | 130000-180000 | |
| 200000 | 180000-230000 | |
| 250000 | = 230000 |
Incazelo Yomkhiqizo:
IHydroxypropyl Methylcellulose (HPMC) iyimpushana emhlophe engenaphunga, engenabuthi. Ngemuva kokuqedwa ngokuphelele emanzini, izokwakha isisombululo se-viscous esisobala. I-ether engeyona i-ionic cellulose eyenziwe ngezinto ze-polymer zemvelo ngochungechunge lokucutshungulwa kwamakhemikhali. Inezici zokuqina, ukunamathela, ukuhlakazeka, i-emulsification, ukwakheka kwefilimu, ukumiswa, i-adsorption, i-gelation, umsebenzi ongaphezulu, ukugcinwa komswakama nokuvikelwa kwama-colloid.
Isicelo:
Ukuncibilika kwamanzi kanye nekhono lokuqina: kungancibilika emanzini abandayo, futhi yakhe isixazululo se-viscous esisobala.
Ukuncibilika kuzinyibilikisi eziphilayo: Ngenxa yokuthi iqukethe inani elithile lamaqembu e-hydrophobic methoxy, lo mkhiqizo ungancibilika kwezinye izinyibilikisi zemvelo.
Ukuqina kwenani le-PH: I-viscosity yesisombululo samanzi se-HPMC izinzile kububanzi bevelu engu-PH engu-3.0-11.0.
Umsebenzi ongaphezulu: Isixazululo samanzi se-HPMC sinomsebenzi ongaphezulu. Inomphumela we-emulsifying, ivikela ikhono le-colloid nokuzinza okuhlobene.
I-Thermal Gelation: Uma ishiswa ngaphezu kwezinga lokushisa elithile, isixazululo esinamanzi se-HPMC singaba yi-opaque, sikhiqize imvula, futhi silahlekelwe yi-viscosity. Kodwa-ke, kancane kancane yashintsha yaba isimo sesixazululo sokuqala ngemva kokupholisa.
Okuqukethwe komlotha ophansi: I-HPMC ayiyona i-ionic, ingagezwa ngamanzi ashisayo ngesikhathi senqubo yokulungiselela futhi ihlanjululwe ngokuphumelelayo, ngakho okuqukethwe kwayo komlotha kuphansi kakhulu.
Ukumelana nosawoti: Njengoba lo mkhiqizo uyi-electrolyte engeyona i-ionic futhi engeyona i-polymeric, uzinzile uma kuqhathaniswa nezixazululo ezinamanzi zosawoti wensimbi noma ama-electrolyte aphilayo.
Umphumela wokugcina amanzi: Ngoba i-HPMC iyi-hydrophilic futhi isixazululo sayo esinamanzi sibonakala kakhulu. Ingangezwa kudaka, i-gypsum, upende, njll ukuze kugcinwe ukugcinwa kwamanzi okuphezulu emkhiqizweni.
Ukumelana nesikhutha: Inokumelana okuhle nesikhutha, futhi inokuqina okuhle kwe-viscosity ngesikhathi sokugcinwa isikhathi eside.
I-Lubricity: Ukwengeza i-HPMC kunganciphisa i-friction coefficient futhi kuthuthukise ukuthambisa kwemikhiqizo yobumba ekhishwe kanye nemikhiqizo kasimende.
Isakhiwo sokwenza ifilimu: Ingakhiqiza ama-flakes aqinile, aguqukayo, asobala ngamafutha amahle kanye nokumelana ne-ester.
Ezimpahleni zokwakha, i-HPMC cellulose ingasetshenziswa njenge-ejenti egcina amanzi kanye ne-retarder yodaka lukasimende ukwenza udaka lumpompeke.
Njenge-adhesive, ukusetshenziswa kwe-HPMC kumapulasi, i-gypsum, i-putty powder noma ezinye izinto zokwakha kungathuthukisa ukusabalala kwazo futhi kwandise isikhathi sabo sokusebenza.
Ukugcinwa kwayo kwamanzi kungavimbela ukunamathisela ekuqhekekeni ngokushesha ngemva kokumbozwa, futhi kungathuthukisa amandla okunamathela ngemva kokuqina.
Ngaphandle kwalokho, amakhemikhali e-HPMC angasetshenziswa njengesithuthukisi sokunamathela kuthayela, imabula, nomhlobiso wepulasitiki embonini yezokwakha.
Ngaphezu kwalokho, i-HPMC powder isetshenziswa njenge-thickener, stabilizer, emulsifier, excipient, kanye ne-ejenti yokugcina amanzi ekukhiqizeni enye imboni, njengamakhemikhali e-petrochemicals, okokugqoka, izinto zokwakha, izisusa zopende, amakhemikhali ezolimo, oyinki, ukuphrinta kwendwangu kanye nokudaya, izinto zobumba, ukwenza iphepha, izimonyo, njll.
Iphakheji: 25 kgs/isikhwama noma njengoba ucela.
Isitoreji: Gcina endaweni engenawo umoya, eyomile.
Amazinga asetshenzisiwe: Izinga lamazwe ngamazwe.
