Hydroxypropyl methylcelculose (hpmc)yi-non-ionic ye-unic, inyibilikisi ye-ether exineneyo. Inkangeleko imhlophe emgubhu emdaka kancinci okanye i-Granular, engenakuthelekiswa nanto, engenatyhefu, izinzile ezingenabuchwephesha, kwaye inyibilike emanzini ukuze inyibilike, ibe selokuba inyibilike kwaye ibonakale isisombululo esigudileyo. Enye yezona ndawo zibalulekileyo ze-hydroxypropyl methylcelcelsulose kwisicelo kukuba iyonyusa i-viscosity yolwelo. Isiphumo sokuthambisa sixhomekeke kwinqanaba le-Polymerization (DP) lemveliso, uxinzelelo lwe-selsulose i-ether kwisisombululo samanzi, iqondo le-Shear, kunye neqondo lokushisa. Kunye nezinye izinto.
01
Uhlobo lwe-fluid yesisombululo se-HPMC
Ngokubanzi, uxinzelelo lwe-fluar ekuqhushushelwe iShear lunokubonakaliswa njengomsebenzi wexabiso le-Shear kuphela (γ), lo gama nje ingaxhomekeki kwixesha elixhomekeke kwixesha. Kuxhomekeka kwifomu ye-ƒ (γ), i-sna i-fluid inokwahlulwa ibe ziintlobo ezahlukeneyo, ezizezi: i-flualian fluids, i-dilatedant fluids, i-pseudoplaant fluids kunye ne-bingham iplastike.
I-seluplose e kanithuhlule zangamacandelo amabini: Inye i-ionic selsulose ether kwaye enye i-ionic sether sether. Kwibala le-RUOIOOLOG yezi ntlobo zimbini zeseli I-SC Naik et al. Iqhube uphononongo olupheleleyo nolucwangcisiweyo lwendlela yokuthelekisa kwi-hydroxyythyl seluplose kunye nesodium yebhokisi ye-carboxymethyl seluploses. Iziphumo zibonise ukuba zombini izisombululo ze-ionsulose ze-iose ye-iose kunye ne-Ionic seluplose yezisombululo zepseudoplastic. Ukuhambahamba, okt ukuhamba kweNew-Newtonian, yiya kulwela amaNewnia kuphela ngeendlela eziphantsi kakhulu. I-pseudoplastity ye-hydroxypropyl methylcelces yesisombululo idlala indima ebalulekileyo kwisicelo. Umzekelo, xa wasebenza kwimali, ngenxa yeempawu ezicekeceke, ngenxa yeempawu ezicekeceke zeZisombululo eziMongameli, umzobo wesisombululo uncipha ngokusasazeka kwenqanaba le-Shear . Isiphumo sikhulu kakhulu; Ngexesha lokuphumla, uVenkile wesisombululo nkulu kakhulu, othintela ngokufanelekileyo ukubekwa kwe-pigments kwi-com.
02
Indlela yokuvavanya i-HPMC
Isalathiso esibalulekileyo sokulinganisa isiphumo esihle se-hydroxypropyl methylcelcellulose kukufakwa kokubonakala kwesisombululo. Iindlela zemilinganiselo yokubonakala ezibonakalayo zihlala zibandakanya indlela ye-capillary viscosity, indlela yokugcina i-viscosity kunye nendlela yokuwa kwebhola.
phi: I-VICOTION STIT, MPA S; Klona bonakalelo rhoqo; d kukuxinana kwesampulu yesisombululo kwi-20/20 ° C; I-T lixesha lesisombululo ukuba lidlule kwinxalenye ephezulu yophawu kumanqaku asezantsi, s; Ixesha lokuba ioyile esemgangathweni ihamba ngendlela ebonakalayo ilinganiswa.
Nangona kunjalo, indlela yokulinganisa i-capillary vismeter inzima. I-viscofis yabantu abaninziI-seluploseKunzima ukuhlalutya i-capillary visment kuba ezi zisombululo ziqukethe umkhondo wezinto ezingenamkhenkce ezifunyenwe kuphela xa i-capillary ivaliwe. Ke ngoko, uninzi lwabavelisi basebenzisa iirekhodi ezijikelezayo ukulawula umgangatho we-hydroxyproplol methylceluplose. I-Vrookfield Vismeremeters isetyenziswa rhoqo kumazwe asemzini, kunye nee-NDJ Vismeres zisetyenziswa eTshayina.
03
Ukwenza impembelelo ye-HPMC Viscofity
3.1 Ubudlelwane kunye nenqanaba lokudibanisa
Xa ezinye iiparamitha zihlala zingaguqukanga, i-viscosity ye-Hydroxypropyl MethylcelceLcelose ihambelana ne-Polymerity ye-Polymerization (DP) ubude be-Polymerization, kwaye yonyuka ngokunyuka kwe-polymerization. Le mpembelelo ichaziwe ngakumbi kwimeko ye-polymerization ye-polymerizazation kunemeko yenqanaba eliphezulu le-polymerization.
3.2 Ubudlelwane phakathi kokufakwa kwi-viscofity kunye noxinzelelo
I-viscosity ye-hydroxypropyl methylcelcelculose inyuka ngokunyuka kwemveliso kwimveliso kwisisombululo. Nokuba utshintsho oluncinci loxinzelelo luya kubangela utshintsho olukhulu kwi-viscosity. Ngokubonisa i-viscofity ye-hydroxypropyl methylcelcelcelose ifuthe lokutshintsha kwesisombululo kwi-viscosity yesisombululo icacile kwaye icacile ngakumbi.
3.3 Ubudlelwane phakathi kwe-viscofity kunye nenqanaba le-Shear
I-HydroxyPOpyl Methylcelcelcelsulose isisombululo se-shear shearting. I-Hydroxypropyl Methylcelcelcelose ye-viscofity eyahlukileyo ilungiselelwe kwisisombululo esi-2 se-ACTEAGOAR, kwaye ukubonwa kwayo kumazinga okwahlukeneyo amaxabiso alinganiswe ngokulandelelana. Iziphumo zilandela njengoko kubonisiwe kumzobo. Kwinqanaba le-Shear esezantsi, i-viscosity ye-Hydroxypropyl Methylcelcelose ayitshintshi kakhulu. Ngokwanda kwexabiso le-Shear, uVenkile we-Hydroxypropyl Methylcelcelose Stols kunye no-Viscofity oPhezulu oPhezulu wehle kakhulu, ngelixa isisombululo se-viscofity esezantsi sasingahlambulukanga.
3.4 Ubudlelwane phakathi kwe-viscofity kunye neqondo lobushushu
Uhlobo lwe-viscosity ye-hydroxypropyl methylcelcelcelse ichaphazeleke kakhulu liqondo lobushushu. Njengoko iqondo lobushushu liyanda, uVekyusi wesisombululo uyancipha. Njengoko kubonisiwe kumzobo, ilungiselelwe isisombululo se-aqueus kunye noxinzelelo lwe-2%, kunye notshintsho lwe-viscofity kunye nokunyuka kobushushu kulinganiswa.
3.5 Ezinye izinto eziphembelelayo
Uhlobo lwe-viscosity yesisombululo se-hydroxypropyl methylcelgalose ikwachaphazeleka zizisombululo, ixabiso le-pl yesisombululo, kunye nokupheliswa kwentsholongwane. Ngokwesiqhelo, ukuze ufumane ukusebenza kakuhle kwi-viscofity okanye ukunciphisa iindleko zokusetyenziswa, kubalulekile ukongeza izimo eziguqukayo zeRheeology, ezinje ngodongwe, i-staymer powder, kwisicombululo se-biprolym sestry methylceluplose. , kwaye ii-elektrolytes ezinje nge-chloride, ibromide, i-phosphate, i-nitrate, njl njl. Ezi zongezo aziyi kuchaphazela kuphela iipropathi ze-viscosity zesisombululo esinamandla, kodwa zikwachaphazela nezinye iipropathi zezicelo ze-Hydroxypropyl Methylcelgalose efana nokugcinwa kwamanzi. , ukuxhathisa i-SAG, njl.
I-viscosity yesisombululo se-hydroxypropyl methylcelcelsulose ayichanekanga yi-AID kunye ne-Alkali, kwaye inokuthi ihlale kwi-Acids ebuthathaka, enjenge-aceid acid, phosphoric acid , i-boric acid, i-cicric acid, njl njl. Nangona kunjalo, i-acid egxile kwi-acid iya kunciphisa i-viscofity. Kodwa isoda ye-caustic, i-potassium hydroxide, i-lime amanzi, njl njl ayinampembelelo. Xa kuthelekiswa nezinye iiselwesehydroxypropyl methylcelceluploseIsisombululo esinamandla sinozinzo oluhle kakhulu, esona sizathu siphambili kukuba i-hydroxypropyl methylcelcel inamaqela aphezulu kunye nokuthintela i-arhydroglucluclucluclucluclucluclucose kakhulu yi-microorganisms, okukhokelela Kwisiphoso se-selselose ether molecules kunye ne-chansi. Ukusebenza kukuba uVelosity obonakalayo wesisombululo se-ACTECE uyancipha. Ukuba kuyimfuneko ukugcina isisombululo se-hydroxypropyl methylceluplose ixesha elide, kuyacetyiswa ukongeza inani le-antifungal ukuze i-velofity iguqukele kakhulu. Xa ukhetha iiarhente ze-fungling, indawo yokuhlala okanye i-fungvatides, ufanele ukuthathela ingqalelo ukhuseleko, kwaye ingabamba ipropathi engalunganga, i-odorvves, i-binguard64 iarhente yearhente kunye nezinye iimveliso. Ungadlala indima ehambelana nayo.
IXESHA LOKUQALA: APR-28-2024