Hydroxypypyl ndi polymer yotchuka yosungunulira yamadzi yomwe imapanga yankho lomveka bwino komanso lokhazikika m'madzi ndipo limagwiritsidwa ntchito kwambiri mu mankhwala opangira mankhwala, chakudya ndi mafakitale omanga ndi omanga. Ndi zinthu zopanda pake za celluse yopanda ionic yomwe imawongolera mgwirizano ndi zogwirizana za chinthu chomaliza. Kuti muwonetsetse magwiridwe antchito apamwamba a hydroxypropyl meth methylcellulose, chinthucho chikufunika kuyesedwa komanso choyenera musanagwiritse ntchito. Munkhaniyi, tikambirana njira zitatu zodalirika zodziwira mtundu wa hydroxypropyl methylcellulose.
1. Mayeso a Viscton
Makutu a hydroxypropyll methylcellulose ndi gawo lofunikira kuti mudziwe mtundu wake. Ma Ukuwoneka ndi kukana kwa madzi oyenda ndipo amayeza muntipo (CPS) kapena MPA.S. Makulidwe a hydroxypropyll methylcellulose amasintha molingana ndi kulemera kwake ndi kuchuluka kwa cholowa m'malo mwake. Kuchuluka kwazolowetsa, kutsitsa mafayilo azomwezo.
Kuyesa mamasukidwe a hydroxypylroselilose, sungani zochepa zomwe zimapangidwa pang'ono m'madzi ndikugwiritsa ntchito zojambula kuti muyesetse mafayilo a yankho. Makutu a yankho ayenera kukhala mkati mwa omwe amathandizidwa ndi omwe amapereka. Chogulitsa chabwino cha hydroxypropyl chimakhala ndi mawonekedwe osasinthika, omwe ndi chizindikiro cha kuyera ndi kukula kwa tinthu tambiri.
2. Kuyeserera
Mulingo wazolowa m'malo mwa kuchuluka kwa magulu a ma hydroxyl magulu a cellulose olowetsedwa ndi hydroxypropyl kapena methyl. Mlingo wazolowa m'malo mwake ndi chizindikiro cha kuyera kwa mankhwala, kukwera kwamphamvu kwa cholowa m'malo mwake. Zogulitsa zapamwamba za hydroxpyl mankhwala ziyenera kukhala ndi gawo lalikulu.
Kuyesa kuchuluka kwa cholowa m'malo mwake, kupatulidwa kumachitika ndi sodium hydroxide ndi hydrochloric acid. Dziwani kuchuluka kwa sodium hydroxide kuti ithetse hydroxypropyll a methylcellulose ndikuwerengera kuchuluka kwazotsatira pogwiritsa ntchito njira yotsatirayi:
Kuchuluka kwa zolowa = ([voliyumu ya Naoh] x [Nalarity of Naoh] x 162) / ([Wolemera wa hydroxypropyl celyl] x 3)
Mulingo wazolowa m'malo mwake ayenera kukhala mkati mwa omwe amathandizidwa ndi wogulitsa malonda. Mulingo wazolowa m'malo apamwamba kwambiri a hydroxypyll mankhwala zinthu ziyenera kukhala momwemo.
3. Kuyesa kosasinthika
Kusungunuka kwa hydroxypropyll methylcellulose ndi gawo lina lofunikira kudziwa mtundu wake. Chogulitsacho chimayenera kusungunuka mosavuta m'madzi ndipo osapanga zopukutira kapena ma gels. Zogulitsa zapamwamba za hydroxpyl zinthu zogulitsa ziyenera kusungunuka mwachangu komanso mobwerezabwereza.
Kuti muyese mayeso osinthira, sungunulani zinthu zochepa m'madzi ndikuyambitsa yankho mpaka utasungunuka kwathunthu. Njira yothetsera vutoli iyenera kukhala yowoneka bwino komanso yopanda ma dumps kapena ma gels. Ngati malonda samasungunuka mosavuta kapena ma ademps kapena ma gels, ikhoza kukhala chizindikiro chosawoneka bwino.
Pomaliza, hydroxypropyl methylcellulose ndizinthu zamtengo wapatali zomwe zimagwiritsidwa ntchito m'mafakitale osiyanasiyana. Pofuna kuonetsetsa kuti malondawo, mafakisoni, olowa m'malo ndi ma solubil amachitika. Mayeso awa adzathandizira kumvetsetsa bwino zomwe zalembedwazo ndikuthandizira kusiyanitsa mawonekedwe ake. Hydroxypypypyl methylcellulose idawoneka yosasintha, yolowa m'malo mwamphamvu, ndikusungunuka mwachangu komanso mosagwirizana m'madzi.
Post Nthawi: Jul-11-2023