Ukuvavanya njani i-viscosity ye-hydroxypropyl methylcellulose?

I-Hydroxypropyl methylcellulose yokwakhiwa kweemfuno zokuthintela ukungena kwamanzi eludongeni, kunye nokugcinwa kwamanzi afanelekileyo kumdaka kunokwenza i-samente ivelise ngokupheleleyo ukusebenza kakuhle kwamanzi kunye namanzi. I-Hydroxypropyl methylcellulose I-viscosity ye-cellulose kwi-mortar ihambelana ngokuthe ngqo, ukuphakama kwe-viscosity, kungcono ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose.

Emva kokuba umxholo wokufuma we-hydroxypropyl methylcellulose uphezulu kakhulu, ukugcinwa kwamanzi e-hydroxypropyl methylcellulose kuya kuncipha, okuya kukhokelela ngokuthe ngqo ekwehleni kobuchule bokwakha be-hydroxypropyl methylcellulose. Kwakhona siqhelene nezinto ezidla ngokwenza iimpazamo. Kufuneka siyigcine isitsha kwaye siya kufumana iziphumo ebezingalindelekanga.

I-viscosity ebonakalayo yisalathisi esibalulekileyo se-hydroxypropyl methylcellulose. Iindlela eziqhelekileyo zokumisela yi-viscometry ejikelezayo, i-capillary viscometry kunye ne-autumn viscometry ewayo.

Ngaphambili, indlela yokumisela i-hydroxypropyl methylcellulose yayiyi-capillary viscometry, isebenzisa i-viscometer ye-Ubbelohde. Ngokuqhelekileyo isisombululo sokumisela sisisombululo samanzi se-2, kwaye ifomula yile: V=Kdt. I-V imele i-viscosity, iyunithi i, i-K yinto engaguqukiyo ye-viscometer, i-d imele uxinano kwiqondo lokushisa elingaguqukiyo, t libhekisela kwixesha ukusuka phezulu ukuya ezantsi ngokusebenzisa i-viscometer, iyunithi yesibini s. Le ndlela inzima kakhulu ukusebenza, kwaye ukuba kukho izinto ezinganyibilikiyo, kulula ukubangela iimpazamo, kwaye kunzima ukuchonga umgangatho we-hydroxypropyl methylcellulose.

Ingxaki ye-delamination yeglue yokwakha yingxaki enkulu edibana nabathengi. Okokuqala, ingxaki yezinto eziluhlaza kufuneka ithathelwe ingqalelo kwi-delamination yeglue yokwakha. Esona sizathu siphambili se-delamination yeglue yokwakha yi-polyvinyl alcohol (PVA) kunye ne-hydroxypropyl methylcellulose (HPMC). okubangelwa kukungahambelani. Okwesibini, kungenxa yokuba ixesha lokuvuselela alanelanga; Ukongeza, ukusebenza kokuqina kweglue yokwakha akulunganga.

Kwiglue yokwakha, i-instant hydroxypropyl methylcellulose (HPMC) kufuneka isetyenziswe, kuba i-hydroxypropyl methylcellulose (HPMC) ihlakazwe kuphela emanzini ngaphandle kokuchithwa kwangempela. Malunga nemizuzu emi-2, i-viscosity yolwelo iyanda ngokuthe ngcembe, yenze i-colloid ebonakalayo ebonakalayo.

Iimveliso ezincibilikisiweyo ezishushu, xa zidibene namanzi abandayo, ziyakwazi ukusasazeka ngokukhawuleza emanzini ashushu kwaye zinyamalale emanzini ashushu. Xa iqondo lobushushu lehla ukuya kwiqondo elithile lobushushu, i-viscosity iya kubonakala kancinane ide yenze i-colloid ebonakalayo ebonakalayo. Isixa esicetyiswayo se-hydroxypropyl methylcellulose (HPMC) eyongezwe kwiglue yokwakha yi-2-4kg.

I-Hydroxypropyl methylcellulose (HPMC) ineekhemikhali ezizinzile, ukumelana ne-mildew, kunye nokugcinwa kakuhle kwamanzi kwiglue yokwakha, kwaye ayichaphazeli utshintsho kwixabiso le-pH. Ingasetyenziselwa kunye ne-viscosity ukusuka kwi-100,000 S ukuya kwi-200,000 S. Kodwa kwimveliso, i-viscosity ephezulu, ingcono. I-viscosity ihambelana ngokungafaniyo namandla ebhondi. Ukuphakama kwe-viscosity, kuncinci amandla. Ngokuqhelekileyo, i-viscosity ye-100,000 S ifanelekile.