I-HPMC (Hydroxypropyl Methylcelceltulose) yindawo efanelekileyo yokonga kwaye isetyenziswa ngokubanzi ekuqulunqweni kwengubo kunye neepeyinti. Omnye wemisebenzi yayo ephambili kukuphucula ulawulo lwe-viscosity, olungaphumi nje i-RUOOOOOOOOOLOGY YOKWENZIWA KOKUSETYENZISWA KOMSEBENZI WAMAKHONO.
1. Iipropathi ezisisiseko ze-HPMC
I-HPMC yi-ionic se-ionsulose i-ether ye-ether equkethe i-smoubing yamanzi elungileyo kunye ne-orgaccent yomelele. Inokuyichitha kwaye yenze isisombululo esizinzileyo se-colloidal kubushushu obahlukeneyo kunye nexabiso le-pH. Eyona ndlela iphambili ye-HPMC yeyokwakhiwa kwezakhiwo zenethiwekhi nge-indrages ye-hydrogen ye-hydrogen kunye ne-van der imikhosi, ngaloo ndlela ichaphazela iipropathi ze-pieologings okanye iipeyinti. Utshintsho lwe-viscosity yotshintsho olunotshintsho, amaqondo obushushu, inqanaba le-Shear kunye nezinye izinto, ezenza isicelo sayo kwiingubo kunye neepeyinti zinesithuba esikhulu sokuhlengahlengisa.
I-2. Umsebenzi we-HPMC kwi-coyiats kunye neepeyinti
Uhlengahlengiso lwe-Viscofity: Umsebenzi ophambili we-HPMC kukuhlengahlengisa i-viscofity yenkqubo. Kwingubo kunye neepeyinti, i-viscosity yiparamitha ebalulekileyo echaphazela ngqo ulwakhiwo, ukungenisa, kunye nefuthe lokugqibela lefilimu yezinto. I-HPMC inokulawula ngokuchanekileyo i-viscosity yokutshintsha ngokutshintsha isakhiwo semolekyuli okanye uxinzelelo, siqinisekisa uzinzo kwaye sisebenza ngokunyanzeliswa ngexesha lokugcina, ukuthutha nolwakhiwo.
Ulawulo lwe-ROOOILOC: I-HPMC inika ukuthuthuza okanye ipeyinta i-propelogies elungileyo ye-rheeology, ukuze igcine i-viskosity ephezulu xa igcina i-viscofity xa inqaba i-sedasity, kwaye inokunciphisa i-viscofity echetywe, esenza kube lula ukufaka. Le thlixitropy ibalulekile kwintsebenzo yokwakha impahla yokunxiba kunye neepeyinti, ngakumbi xa ityibilika, ibrasha okanye iqengqele, enceda ukuthutha.
Ukusebenza okuchasene nokuntywila: Xa iingubo okanye iipeyinti zisetyenziswa kwindawo ethe nkqo, ukutyhoboza kuhlala kwenzeka, oko kukuthi, ukubhabha kuhamba phantsi kwesenzo sobunkunkqele, kubangela ukuba amanqaku angenanga. I-HPMC icinezela ngempumelelo i-sagnomenon eshukumayo ngokuphucula i-viscovity kunye ne-Thriyotropy yeNkqubo, iqinisekisa uzinzo lwe-commailing xa isetyenziswa kwindawo ethe nkqo.
Isiphumo sokudakumba okuchasene: Kwimpahla eneempawu ezininzi okanye iifilitha, imigca okanye iifilitha zithambekele kwi-sediment, echaphazela ukufana komsebenzi. I-HPMC iyacothisa iqondo lokuhamba kwamasuntswana aqinileyo ngokwandisa i-viscofity yenkqubo. Kwangelo xesha, igcina imeko yokumiswa kwayo kwipeyinti ngokusebenzisana namasuntswana e-pigment, ukuqinisekisa ukuba ipeyinti iyunifomu ifanayo kwaye iyahambelana ngexesha lenkqubo yokwakha.
Ukuphucula uzinzo kugcino: Ngexesha lokugcina ixesha elide, ipeyinti ixhaphake kwi-spotting, i-captition okanye i-sedation. Ukongezwa kwe-HPMC kunokuphucula ngokufanelekileyo ukuzinza kwepeyinti, ukugcina ukufakwa kunye nokubonisa ipeyinti, ngaloo ndlela kudlulisa ubomi beshelt, ngaloo ndlela kudlulisa ubomi beshels yayo kwaye uphephe ukonakala komgangatho wemveliso.
I-3. IZINTO EBUCHULE UKUTHENGA I-VICOMSITY yi-HPMC
Uxinzelelo: Ukugxininiswa kwe-HPMC yindawo ethe ngqo echaphazela i-viscofity yepeyinti okanye ipeyinti. Njengoko uxinzelelo lwe-HPMC, i-viscosity yenkqubo iya kwanda kakhulu. Ngenxa yeengubo ezifuna ukundwendwela okuphezulu, ukwandisa ngokufanelekileyo isixa se-HPMC sinokufezekisa inqanaba lokundwendwela. Nangona kunjalo, uxinzelelo oluphakamileyo lunokubangela ukuba le nkqubo ichaphazele kakhulu kwaye ichaphazele ukusebenza kokwakha. Ke ngoko, kuyimfuneko ukulawula ngokuchanekileyo isixa se-HPMC songezwe ngokwemeko ethile yesicelo kunye neemfuno zokwakha.
Ubunzima bemolekyuli: Ubunzima bemolekyuli ye-HPMC ikwayinto ebalulekileyo echaphazela uVeksisity. I-HPMC ene-molecround ephezulu yemo ye-suerser yenethiwekhi kwisisombululo, enokunyusa kakhulu i-viscomosity ye-combood; ngelixa i-HPMC ene-molecular ephantsi ibonakalisa uVeksity ongezantsi. Ngokukhetha i-HPMC kunye neemolekyuli ezahlukeneyo zemolekyuli, i-viscosity ye-commaint okanye ipeyinti inokuhlengahlengiswa ukuze ifezekise iimfuno ezahlukeneyo zokwakha.
Iqondo lokushisa: UVekyusi we-HPMC uyancipha ngokukhulisa ubushushu obukhulayo. Ke ngoko, xa wayekhe wakha kwimo yokushishina esiphezulu, kuyimfuneko ukukhetha iintlobo ze-HPMC ngokuxhathisa obunobushushu obuphezulu okanye ukonyusa ngokufanelekileyo imithamo yayo yokuqinisekisa ukusebenza kwenqanaba eliphezulu.
Ixabiso le-pH: i-HPMC iZinzile kwi-PH ye-PH, kodwa iimeko ezigqithisileyo kunye neAlkali ziya kuchaphazela uzinzo lwayo lokufa. Kwimeko ye-acid eyomeleleyo okanye i-alkali, i-HPMC inokucekiseka okanye isilele, kubangela ukwehla kwi-viscofity. Ke ngoko, xa uyila ifomula, qinisekisa ukuba ixabiso le-pH lenkqubo liphakathi ukugcina isiphumo sokulawulwa kwe-viscofity ye-HPMC.
Ixabiso le-Shear: I-HPMC i-sheickere-tickener ecekeceke, oko kukuthi, i-viscosity yayo iya kuncitshiswa kakhulu kumazinga amachiza aphezulu. Le ndawo ibaluleke kakhulu kwinkqubo yokwakha ukucaphuka, kuba xa ukuxubha, ukuqengqeleka okanye ukutshiza, ukungqengqa, i-COATE iphantsi komkhosi omkhulu we-Shear, kwaye i-HPMC inokuphucula ukusebenza ngokunciphisa i-vickosity. Emva kokuba ulwakhiwo lugqityiwe, i-Shear Amandla anyamalala, kwaye i-HPMC inokubuyisela i-viscofity ye-vissing ukuqinisekisa ukufana kunye nobungqingqwa befilimu ehlekisayo.
I-4. Ukusetyenziswa kwe-HPMC kwiinkqubo ezahlukeneyo zokuhamba
I-Coatshini esekwe emanzini: i-HPMC isetyenziswa ngokubanzi kwi-cayishini esekwe emanzini. Ayinakusetyenziswa kuphela njenge-tickener, kodwa ikwanguncedo lokwenza ifilimu kunye nokuzinzisa. Kwiinkqubo ezisekwe emanzini, i-HPMC inokunyusa i-viscofity ye-viscosity, iphucule i-RUOOLOLOGL yayo kunye nenqanaba, kunye nokukhusela i-sediment kunye nokungena. Kwangelo xesha, kunokuphucula ukumelana kwamanzi kunye nokungavisisisisanayo kwefilimu ehlekisayo kwaye kwandise ubomi benkonzo yokudibana.
I-Coatvents esekwe kwi-Solvent: Nangona i-HPMC isetyenziswa kancinci kwi-cayishini esekwe kwi-Solvent, isenokusetyenziswa njenge-tickener kunye nentengo. Ingakumbi kwi-CoATORD YOKUGQIBELA IXESHA LOKUGQIBELA (VPMC), i-HPMC inokubonelela ngolawulo olufanelekileyo lolawulo kunye nohlengahlengiso lwe-ndwendwe oluyimfuneko kunye nokunciphisa ukusetyenziswa kwezinyithi kunye neemfuno zoKhuseleko lwezeNdalo.
Ingubo yomgubo: Kwingubo yomgubo, i-HPMC inokusetyenziswa njenge-Binder kunye ne-tickener ukuphucula ubunzi kunye nefilimu yokwakha ifilimu ngokwandisa i-vider. I-HPMC inokuqinisekisa ukuba i-powder caides akukho lula ukubhabha ngexesha lenkqubo yokwakha, ngelixa iphucula ukufana nokuxinana kwefilimu ehlekisayo.
I-HPMC iyonza ulawulo oluhle lwe-viscofity kwi-carcoting kunye neepeyinti kwiipropathi zayo ezizodwa zomzimba kunye neekhemikhali. Ayinakukwazi ukulungelelanisa ngokuchanekileyo i-viscofity yenkqubo, kodwa ikwaphucula i-RUOOOOOOOOOOLOLOGY KUNYE NOKUFUMANA I-RUOOOOOOOOOOOLOGY KUNYE NOKUFUMANA I-RUOOOOOOOOOOOLOGY KUNYE NOKUFUMANA I-RUOOOOOOOOOOLOGY KUNYE NOKUFUNA IIMPENDULO ZESIQINISEKISO SOKUGQIBELA, NOKUFUNDA, NOKUFUMANA uzinzo. Ngokwenkqubo eyahlukileyo yokuhamba kweendlela ezahlukeneyo zokubhatala kunye neemfuno zokwakha, ngokuhlengahlengisa uxinzelelo, ubunzima bemolekyuli, ixabiso le-PH kunye nezinye izinto ezinokulawulwa ngokufanelekileyo, ngaloo ndlela ziphucule ukwakhiwa komgangatho wokudibana kunye nomgangatho wokugqibela wokuyalela.
I-Post Time: Sep-13 ukuya ku-2424