Nigute ushobora gusuzuma ubuziranenge bwa Hydroxypropyl Methyl Cellulose HPMC?

(1). Itandukaniro riri hagati yubusambanyi bwa hydroxypropyl methylcellulose (HPMC) na hydroxypropyl methylcellulose (HPMC)
1. Kugaragara: hydroxypropyl methylcellulose HPMC isa neza kandi ifite ubwinshi buke, kuva kuri 0.3-0.4g / ml; gusambana hydroxypropyl methylcellulose HPMC ifite amazi meza kandi ikumva iremereye, kandi hariho itandukaniro rikomeye mumiterere yibicuruzwa nyabyo.
2. Imiterere: Ifu ya hydroxypropyl methylcellulose Ifu ya HPMC ni fibrous munsi ya microscope cyangwa ikirahure kinini; mugihe hydroxypropyl methylcellulose yasambanijwe HPMC irashobora kugaragara nkibintu bya granulaire cyangwa kristu munsi ya microscope cyangwa ikirahure kinini.

3. Impumuro: hydroxypropyl methylcellulose HPMC ntishobora kunuka impumuro ya ammonia, krahisi n'inzoga; gusambana hydroxypropyl methylcellulose HPMC irashobora kunuka ubwoko bwimpumuro zose, niyo yaba itaryoshye, izumva iremereye.
4. Igisubizo cyamazi: hydroxypropyl methylcellulose HPMC igisubizo cyamazi kirasobanutse, kohereza urumuri rwinshi, igipimo cyo gufata amazi ≥ 97%; gusambana hydroxypropyl methylcellulose HPMC igisubizo cyamazi ni amazi, kandi igipimo cyo gufata amazi kiragoye kugera kuri 80%.

(2), kubika amazi ya hydroxypropyl methylcellulose HPMC, gutandukanya ibyiza nibibi:

Kugumana amazi ya methyl selulose ether mubihe byubushyuhe bwinshi nikimenyetso cyingenzi cyo gutandukanya ubwiza bwa methyl selulose ether. Ibintu nkubushyuhe bwikirere, ubushyuhe numuvuduko wumuyaga bizagira ingaruka kumuvuduko wamazi mumazi ya sima nibicuruzwa bishingiye kuri gypsumu. Kubwibyo, mubihe bitandukanye, hariho itandukaniro mubikorwa byo gufata amazi yibicuruzwa hamwe na HPMC yongeyeho. Mu bwubatsi bwihariye, ingaruka zo gufata amazi ya slurry zirashobora guhinduka mukwongera cyangwa kugabanya umubare wa HPMC wongeyeho. Ibicuruzwa byiza bya hydroxypropyl methylcellulose HPMC birashobora gukemura neza ikibazo cyo gufata amazi munsi yubushyuhe bwinshi.

Methylcellulose yo mu rwego rwohejuru irashobora gukwirakwizwa kimwe kandi neza mugisima cya sima hamwe nibicuruzwa bishingiye kuri gypsumu, hanyuma ugapfunyika ibice byose bikomeye, hanyuma ugakora firime itose, ubuhehere buri munsi bukarekurwa buhoro buhoro igihe kirekire, hamwe na organique The hydration reaction y'ibikoresho byashizwemo byemeza imbaraga zububasha nimbaraga zo kwikuramo ibintu. Hydroxypropyl methylcellulose yo mu rwego rwo hejuru HPMC, uburinganire bwayo ni bwiza cyane, imitekerereze yayo na hydroxypropoxy bigabanijwe neza ku murongo wa selile ya selile, birashobora kongera ogisijeni kuri hydroxyl na ether Ubushobozi bwa atome bwo guhuza amazi kugirango habeho imigozi ya hydrogen. ihindura amazi yubusa mumazi aboshye, bityo igenzura neza imyuka yamazi iterwa nikirere cyinshi kandi ikagumana amazi menshi.
Kubwibyo, mubwubatsi bwubushyuhe bwo hejuru, kugirango tugere ku ngaruka zo gufata amazi, birakenewe ko hongerwaho ibicuruzwa byiza bya HPMC muburyo buhagije ukurikije formulaire, bitabaye ibyo, hazabaho hydrated idahagije, imbaraga zigabanuka, guturika, gutobora no kumena biterwa no gukama cyane. ibibazo, ariko kandi byongere ingorane zo kubaka abakozi. Mugihe ubushyuhe bugabanutse, ubwinshi bwamazi HPMC yongeyeho burashobora kugabanuka buhoro buhoro, kandi ingaruka zimwe zo gufata amazi zirashobora kugerwaho.

(3) Iseswa rya hydroxypropyl methylcellulose HPMC

Mu nganda zubaka,hydroxypropyl methylcellulose HPMCikunze gushyirwa mumazi atabogamye, kandi ibicuruzwa bya HPMC biraseswa byonyine kugirango harebwe igipimo cyo guseswa. Nyuma yo gushyirwa mumazi adafite aho abogamiye wenyine, ibicuruzwa byihuta bidatatanye nigicuruzwa kitavuwe hejuru; nyuma yo gushyirwa mumazi adafite aho abogamiye wenyine, ibicuruzwa bishobora gutatana kandi bidafatanye hamwe nibicuruzwa bivura hejuru. Iyo ubuso butavuwe hydroxypropyl methylcellulose HPMC bwashonga bwonyine, agace kayo kamwe gashonga vuba kandi bigakora firime vuba, bigatuma amazi atongera kwinjira mubindi bice, bikavamo agglomeration na agglomeration, kuri ubu bita gusenyuka buhoro mubicuruzwa byisoko.

Hydroxypropyl methylcellulose HPMC yibicuruzwa bitunganijwe, mumazi adafite aho abogamiye, uduce tumwe na tumwe dushobora gutatana nta agglomeration, ariko ibicuruzwa bya viscc ntibizahita. Nyuma yo gushiramo mugihe runaka, imiterere yimiti yo gutunganya hejuru irasenywa, kandi amazi arashobora gushonga uduce twa HPMC. Muri iki gihe, ibice byibicuruzwa byarakwirakwijwe kandi byinjijwemo amazi ahagije, bityo ibicuruzwa ntibishobora guteranya cyangwa guhuriza hamwe nyuma yo guseswa. Umuvuduko ukwirakwizwa no kwihuta biterwa nurwego rwo kuvura hejuru. Niba kuvura hejuru ari bike, umuvuduko wo gutatanya uratinda kandi umuvuduko wo kwihuta urihuta; mugihe ibicuruzwa bifite ubuvuzi bwimbitse bifite umuvuduko ukabije kandi byihuta. Niba ushaka gukora uruhererekane rwibicuruzwa bishonga vuba muri iyi leta, urashobora guta umubare muto wibintu bya alkaline mugihe bishonge wenyine. Isoko ryubu risanzwe ryitwa ibicuruzwa byihuse. Ibiranga ibicuruzwa bya HPMC bivura hejuru ni: mugisubizo cyamazi, ibice bishobora gutatana hamwe, birashobora gushonga vuba muri alkaline, kandi bigashonga buhoro buhoro muburyo butabogamye na aside.

Ibiranga hydroxypropyl methylcellulose HPMC itavuwe ni: agace kamwe gashonga vuba cyane muri acide, alkaline, na neutre, ariko ntishobora gutatanya hagati yuduce duto mumazi, bikaviramo guhuriza hamwe no guhuriza hamwe. Mubikorwa nyabyo, nyuma yo gukwirakwiza kumubiri wuruhererekane rwibicuruzwa nuduce twinshi nka poro ya reberi, sima, umucanga, nibindi, igipimo cyo gusesa kirihuta cyane, kandi nta agglomeration cyangwa agglomeration. Mugihe bibaye ngombwa gusesa ibicuruzwa bya HPMC ukwabyo, uruhererekane rwibicuruzwa bigomba gukoreshwa ubwitonzi, kuko bizahurira hamwe kandi bifatanye. Niba ari ngombwa gushonga ibicuruzwa bitavuwe na hydroxypropyl methylcellulose HPMC ukwayo, bigomba gukwirakwizwa kimwe n'amazi ashyushye 95 ° C, hanyuma bigakonja kugirango bishonge.

Mubikorwa nyabyo byakozwe, uruhererekane rwibicuruzwa akenshi bishonga nyuma yo gukwirakwizwa hamwe nibindi bikoresho bikomeye mu bihe bya alkaline, kandi igipimo cyacyo cyo gusesa ntaho gitandukaniye n’ibicuruzwa bitavuwe. Irakwiriye kandi gukoreshwa mubicuruzwa bishonga wenyine, nta guteka cyangwa kubyimba. Icyitegererezo cyibicuruzwa gishobora gutoranywa ukurikije igipimo cyo guseswa gisabwa nubwubatsi.
Mugihe cyubwubatsi, bwaba ari sima ya sima cyangwa gypsumu ishingiye kuri slurry, inyinshi murizo sisitemu ya alkaline, kandi umubare wa HPMC wongeyeho ni muto cyane, ushobora gukwirakwizwa kimwe muri ibyo bice. Iyo amazi yongeyeho, HPMC izahita ishonga.