Hydroxypropyl methyl cellulose imagawidwa m'mitundu ingapo, ndipo kusiyana kwake ndi kotani?
HPMC ingagawidwe m'magulu awiri: instant ndi hot-melt. Zinthu zomwe zimasungunuka nthawi yomweyo zimafalikira mofulumira m'madzi ozizira ndipo zimasowa m'madzi. Panthawiyi, madziwo alibe kukhuthala, chifukwa HPMC imangofalikira m'madzi ndipo siisungunuka kwenikweni. Pakatha mphindi ziwiri (kusakaniza), kukhuthala kwa madziwo kumawonjezeka pang'onopang'ono, ndikupanga colloid yoyera yowoneka bwino. Zinthu zosungunuka zotentha zimatha kufalikira mofulumira m'madzi otentha ndikusowa m'madzi otentha zikasonkhana m'madzi ozizira. Kutentha kukatsika kufika pa kutentha kwina (malinga ndi kutentha kwa gel kwa chinthucho), kukhuthala kumawonekera pang'onopang'ono mpaka colloid yowoneka bwino yowoneka bwino ipangidwe.
Kodi mungaweruze bwanji ubwino wa hydroxypropyl methyl cellulose mosavuta komanso mwachilengedwe?
Kuyera. Ngakhale kuti kuyera sikungathe kudziwa ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati zinthu zoyera ziwonjezedwa popanga, zidzakhudza ubwino wake, zinthu zambiri zabwino zimakhala ndi kuyera kwabwino.
Kusalala: kusalala kwa HPMC nthawi zambiri kumakhala ndi maukonde 80 ndi maukonde 100, ndipo maukonde 120 ndi ochepa. Kusalala kosalala, kumakhala bwino.
Kutumiza kuwala: HPMC ikayikidwa m'madzi kuti ipange colloid yowonekera, yang'anani momwe kuwala kwake kumayendera. Kutumiza kuwala kukakhala kwakukulu, kumakhala bwino. Zimatanthauza kuti mulibe zinthu zambiri zosasungunuka. Kutumiza kwa reaktara yoyima nthawi zambiri kumakhala bwino, ndipo kwa reaktara yoyima kumakhala koipa. Komabe, sizikutanthauza kuti mtundu wa reaktara yoyima ndi wabwino kuposa wa reaktara yoyima. Pali zinthu zambiri zomwe zimatsimikiza mtundu wa chinthucho.
Mphamvu yeniyeni: mphamvu yeniyeni ikakhala yayikulu, imakhala yolemera kwambiri, imakhala yabwino kwambiri. Nthawi zambiri, chifukwa chakuti hydroxypropyl ili ndi zambiri. Ngati hydroxypropyl ili ndi zambiri, kusunga madzi kumakhala bwino.
Mphamvu yeniyeni: mphamvu yeniyeni ikakhala yayikulu, imakhala yolemera kwambiri, imakhala yabwino kwambiri. Nthawi zambiri, chifukwa chakuti hydroxypropyl ili ndi zambiri. Ngati hydroxypropyl ili ndi zambiri, kusunga madzi kumakhala bwino.
Kodi njira zosungunula za hydroxypropyl methyl cellulose ndi ziti?
Mitundu yonse ikhoza kuwonjezeredwa ku zipangizo pogwiritsa ntchito njira yosakaniza youma;
Ngati ikufunika kuwonjezeredwa mwachindunji ku madzi otentha a chipinda, ndi bwino kugwiritsa ntchito mtundu wa kufalikira kwa madzi ozizira. Kawirikawiri, imatha kukhuthala mkati mwa mphindi 10-90 mutawonjezera (kusakaniza)
Ma model wamba amatha kusungunuka atasakaniza ndi kufalikira ndi madzi otentha, kuwonjezera madzi ozizira, kusakaniza ndi kuziziritsa;
Ngati kuyika ndi kukulunga kumachitika panthawi yosungunuka, chifukwa cha kusakanizirana kosakwanira kapena zitsanzo wamba zimawonjezedwa mwachindunji m'madzi ozizira. Pakadali pano, ziyenera kusunthidwa mwachangu.
Ngati thovu limapangidwa panthawi yosungunuka, limatha kuchotsedwa poyima kwa maola 2-12 (nthawi yeniyeniyo imadalira kukhazikika kwa yankho), kutsuka utsi, kupondereza ndi njira zina, kapena kuwonjezera kuchuluka koyenera kwa defoamer.
Kodi hydroxypropyl methyl cellulose imagwira ntchito yotani pakugwiritsa ntchito ufa wa putty, ndipo kodi pali chemistry?
Mu ufa wa putty, umagwira ntchito zitatu: kukhuthala, kusunga madzi ndi kumanga. Kukhuthala, cellulose imatha kukhuthala, kuchita ngati kuyimitsidwa, kusunga yankho kukhala lofanana mmwamba ndi pansi, komanso kupewa kutsika. Kusunga madzi: kumapangitsa ufa wa putty kuumitsa pang'onopang'ono, ndikuthandizira calcium ya lime kuchitapo kanthu pansi pa madzi. Kapangidwe: cellulose imakhala ndi mphamvu yopaka mafuta, zomwe zingapangitse ufa wa putty kugwira ntchito bwino. HPMC sichita nawo mankhwala aliwonse, koma imangokhala ndi gawo lothandizira.
Kodi kutentha kwa gel kwa hydroxypropyl methyl cellulose kumakhudzana bwanji ndi?
Kutentha kwa gel ya HPMC kumagwirizana ndi kuchuluka kwa methoxyl komwe kuli mu methoxyl. Kuchuluka kwa methoxyl komwe kuli mu methoxyl, kutentha kwa gel kumakhala kwakukulu.
Kodi pali ubale uliwonse pakati pa kutsika kwa ufa wa putty ndi hydroxypropyl methyl cellulose?
Ndikofunikira!!! HPMC ili ndi madzi ochepa, zomwe zimapangitsa kuti ufa utayike.
Kugwiritsa ntchito hydroxypropyl methyl cellulose mu ufa wa putty, kodi chifukwa chake ma thovu mu ufa wa putty ndi chiyani?
HPMC imagwira ntchito zitatu mu ufa wa putty: kukhuthala, kusunga madzi ndi kapangidwe kake. Zifukwa za thovu ndi izi:
Madzi ochulukirapo amawonjezedwa.
Ngati mukanda gawo lina pansi lisanaume, limakhala losavuta kutulutsa matuza.
Nthawi yotumizira: Sep-27-2022