M'makampani omanga, HPMC nthawi zambiri imayikidwa m'madzi osalowerera ndale, ndipo mankhwala a HPMC amasungunuka okha kuti aweruze kuchuluka kwa kuwonongeka.
Pambuyo poyikidwa m'madzi osalowerera okha, mankhwala omwe amathamanga mofulumira popanda kubalalika ndi mankhwala opanda chithandizo chapamwamba;atayikidwa m'madzi osalowerera okha, mankhwala omwe amatha kumwazikana komanso osaphatikizana ndi mankhwala okhala ndi mankhwala apamwamba.
Pamene mankhwala osasamalidwa a HPMC amasungunuka okha, tinthu tating'onoting'ono timasungunuka mofulumira ndikupanga filimu mwamsanga, zomwe zimapangitsa kuti madzi asalowe muzinthu zina, zomwe zimapangitsa kuti agglomeration ndi agglomeration.Amatchedwa instant product pamsika pano.The makhalidwe osasamalidwa HPMC ndi: munthu particles kupasuka mwamsanga mu ndale, zamchere, ndi acidic limati, koma sangathe kumwazikana pakati particles mu madzi, chifukwa mu agglomeration ndi masango.Mu ntchito yeniyeni, pambuyo kubalalitsidwa thupi la mndandanda wa mankhwala ndi olimba particles monga mphira ufa, simenti, mchenga, etc., mlingo kuvunda ndi mofulumira kwambiri, ndipo palibe agglomeration kapena agglomeration.Pamene kuli koyenera kupasuka HPMC mankhwala payokha, mndandanda wa mankhwala ayenera kugwiritsidwa ntchito mosamala, chifukwa agglomerate ndi kupanga apezeka.Ngati kuli kofunikira kusungunula chinthu chopanda mankhwala cha HPMC padera, chiyenera kumwaziridwa mofanana ndi madzi otentha a 95 ° C, kenaka kuziziritsidwa kuti zisungunuke.
Pamwamba-ankachitira HPMC mankhwala particles, mu ndale madzi, munthu particles akhoza omwazikana popanda agglomeration, koma nthawi yomweyo kutulutsa mamasukidwe akayendedwe.Pambuyo akuwukha kwa nthawi ndithu, kapangidwe mankhwala pamwamba mankhwala awonongedwa, ndipo madzi akhoza kupasuka HPMC particles.Panthawi imeneyi, mankhwala particles akhala omwazika mokwanira ndi odzipereka madzi okwanira, kotero mankhwala sadzakhala agglomerate kapena agglomerate pambuyo kuvunda.Liwiro kubalalitsidwa ndi kuvunda liwiro zimadalira mlingo wa mankhwala pamwamba.Ngati mankhwala pamwamba ndi pang'ono, kubalalitsidwa liwiro ndi pang'onopang'ono ndi kumamatira liwiro mofulumira;pamene mankhwala okhala ndi mankhwala ozama pamwamba ali ndi liwiro lobalalika mofulumira komanso mofulumira kumamatira.Ngati mukufuna kupanga mndandanda wazinthuzi kuti zisungunuke mofulumira mu chikhalidwe ichi, mukhoza kugwetsa pang'ono zinthu zamchere pamene zimasungunuka zokha.Msika wapano nthawi zambiri umatchedwa kuti zinthu zomwe zimasungunuka pang'onopang'ono.Makhalidwe a mankhwala amtundu wa HPMC ndi awa: mu njira yamadzimadzi, tinthu tating'onoting'ono titha kumwazikana, titha kusungunuka mwachangu mumchere wamchere, ndikusungunuka pang'onopang'ono mu ndale komanso acidic.
Mu ntchito kwenikweni kupanga, mndandanda wa mankhwala nthawi zambiri kupasuka pambuyo omwazika ndi zinthu zina olimba tinthu pansi zinthu zamchere, ndi Kusungunuka mlingo wake si wosiyana ndi zinthu zosasamalidwa.Ndiwoyeneranso kugwiritsidwa ntchito pazinthu zomwe zimasungunuka zokha, popanda caking kapena zotupa.Chitsanzo chapadera cha mankhwalawo chikhoza kusankhidwa molingana ndi kuchuluka kwa kusungunuka komwe kumafunikira ndi zomangamanga.
Panthawi yomanga, kaya ndi matope a simenti kapena gypsum-based slurry, ambiri mwa iwo ndi machitidwe amchere, ndipo kuchuluka kwa HPMC kuwonjezeredwa ndi kochepa kwambiri, komwe kungathe kugawidwa mofanana pakati pa particles izi.Madzi akawonjezeredwa, HPMC idzasungunuka mwamsanga.Ndi hydroxypropyl methylcellulose yeniyeni yokhayo yomwe ingathe kupirira mayesero a nyengo zinayi: ndondomekoyi imayendetsedwa bwino kuti ipange HPMC, ndipo m'malo mwake imakhala yokwanira ndipo kufanana ndikwabwino kwambiri.Njira yake yamadzimadzi ndiyomveka bwino komanso yowonekera, yokhala ndi ulusi waulere wochepa.Kugwirizana ndi ufa wa rabara, simenti, laimu ndi zipangizo zina zazikulu zimakhala zolimba kwambiri, zomwe zingapangitse kuti zipangizo zazikulu ziziyenda bwino.Komabe, HPMC ndi osauka anachita ali ambiri ulusi ufulu, m'malo kugawa m'malo, osauka madzi posungira ndi katundu wina, chifukwa mu kuchuluka kwa madzi evaporation mu kutentha kutentha.Komabe, zomwe zimatchedwa HPMC zokhala ndi zowonjezera zambiri zimakhala zovuta kugwirizanitsa wina ndi mzake, kotero kuti kusungirako madzi kumakhala koipa kwambiri.Pamene HPMC yosauka ikugwiritsidwa ntchito, mavuto monga mphamvu yochepa ya slurry, nthawi yochepa yotsegula, ufa, kusweka, kupukuta ndi kukhetsa zidzayambika, zomwe zidzawonjezera zovuta zomanga ndi kuchepetsa kwambiri khalidwe la nyumbayo.Zomwezo ndi cellulose ether, zimatha kukhala ndi zotsatira zosiyana.
Nthawi yotumiza: Mar-29-2023