IHydroxypropyl methylcellulose (HPMC) kudaka lomxube omanzi

Indima yeI-HPMC kudaka oluxutyiweyo olumanzi

Udaka oluxutywe manzi yisamente, iaggregate ecolekileyo, ingxubevange, amanzi kunye nezinto ezahlukeneyo ezimiselwe ngokokusebenza. Ngokomlinganiselo othile, emva kokulinganiswa kunye nokuxutywa kwisikhululo sokuxuba, sithuthelwa kwindawo yokusetyenziswa yiloli yokuxuba, kwaye ifakwe kwindawo ekhethekileyo Umxube omanzi ugcinwa kwisitya kwaye usetyenziswe ngexesha elichaziweyo.

I-Hydroxypropyl methylcellulose isetyenziswa njenge-agent ekhuselayo kwi-slurry ye-samente kunye ne-retarder ukwenza i-slurry impompoke. I-Hydroxypropyl-Methyl Cellulose HPMC Iselulosi amandla okuthambisa njengesisombululo se-viscous sonyusa ukusebenza kwedab kwaye sandise ixesha lokusebenza. Oku kuvumela isesame ukuba ingaqhekeki ngokukhawuleza emva kokuthambisa kunye nokwandisa amandla emva kokumisa. . Hydrochloric acid yintsebenzo ebalulekileyo ye-HPMC kwi-hydrolyze cellulose, kwaye ngumvelisi we-pulps ezininzi e-China. Izinto ezichaphazela uludaka olumanzi ziquka isixa songezelelo se-HPMC, i-viscosity ye-HPMC, ukucoleka kwamasuntswana kunye nobushushu be-ambient.

Indima ebalulekileyo ye-HPMC kumxube omanzi ibonakaliswe ngokukodwa kwiinkalo ezintathu: enye inamandla okugcinwa kwamanzi okulungileyo, enye impembelelo kwi-consistency kunye ne-sensory deformation yomxube omanzi, kwaye enye intsebenziswano kunye ne-samente. Ubungakanani be-ether ye-cellulose buxhomekeke ekuthathweni kwamanzi nge-substrate, ukubunjwa kwesanti, ubukhulu boluhlu, imfuno yamanzi kwisisombululo, kunye nexesha le-condensation yezinto.

Izinto zokugcinwa komswakama ezichaphazela i-cellulose ye-hydrolyzed ziquka i-pulp viscosity, inani elongezelelweyo, ukucolwa kwamasuntswana kunye nobushushu. Okukhona i-ether ye-cellulose ijiyile, kokukhona ukuxhathisa kwamanzi kubhetele. I-Viscosity yiparameter yokusebenza ebalulekileyo ye-HPMC. Kwimveliso efanayo, iziphumo ze-viscosity ezilinganiswe ngeendlela ezahlukeneyo ziyahluka kakhulu, kwaye ezinye zide zifikelele kwinkqubela phambili yejometri. Ke ngoko, ukuthelekisa i-viscosities, kufuneka yenziwe phakathi kweendlela ezifanayo zovavanyo, kubandakanya ubushushu, i-spindle, njl.

Ngokuqhelekileyo, okukhona i-viscosity iphezulu, ingcono ukusebenza kokungena kwamanzi. Kodwa ukwanda okukhulu kwe-viscosity, i-HPMC, ukuphakama kwe-molecular weight, i-solubility properties iphantsi, isisombululo sinamandla, kwaye iipropati zichaphazeleka kakubi. Ukuphakama kwe-viscosity, ngcono umphumo wokuqina kwisisombululo, kodwa ungahambelani ngokuthe ngqo nomlinganiselo. Ukuphakama kwe-viscosity, isisombululo esimanzi kunye ne-viscous, xa kwakhiwa, sibonisa ukuchasana okuphezulu phambi kwamagqabi anamathele kunye nezinto eziphathekayo. Kodwa ukongeza amandla esakhiwo kudaka olumanzi ngokwalo akusayi kunceda. Xa ezi zakhiwo zibini zakhiwa, kwafunyaniswa ukuba umsebenzi wokulwa neengcongconi wawungekho. Ngokwahlukileyo, enye i-post-modified methacrylic acid ephantsi kwe-viscosity, ngelixa i-cellulose iphucula isisombululo esimanzi kunye namandla okwakhiwa, ineempawu ezintle kakhulu.