Hydroxypropyl methyl cellulose imagawidwa m'mitundu ingapo, ndipo pali kusiyana kotani pakugwiritsa ntchito kwake?
HPMC akhoza kugawidwa mu nthawi yomweyo ndi otentha-Sungunulani mitundu. Instant mankhwala kumwazikana mofulumira m'madzi ozizira ndi kutha m'madzi. Panthawi imeneyi, madzi alibe mamasukidwe akayendedwe, chifukwa HPMC kokha omwazika m'madzi ndipo si kwenikweni kupasuka. Pambuyo pa mphindi ziwiri (kuyambitsa), kukhuthala kwamadzimadzi kumawonjezeka pang'onopang'ono, ndikupanga mawonekedwe oyera a viscous colloid. Zinthu zosungunuka zotentha zimatha kumwazikana mwachangu m'madzi otentha ndikuzimiririka m'madzi otentha zikaphatikizana m'madzi ozizira. Kutentha kumatsika mpaka kutentha kwina (malinga ndi kutentha kwa gel osakaniza), kukhuthala kumawonekera pang'onopang'ono mpaka mawonekedwe a viscous colloid atapangidwa.
Momwe mungaweruzire mtundu wa hydroxypropyl methyl cellulose mophweka komanso mwachilengedwe?
Kuyera. Ngakhale kuyera sikungadziwe ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati zopangira zoyera zikuwonjezeredwa pakupanga, zimakhudza ubwino wake, zinthu zabwino zambiri zimakhala ndi zoyera zabwino.
Fineness: ubwino wa HPMC nthawi zambiri ndi 80 mauna ndi 100 mauna, ndi 120 mauna ndi zochepa. Kukongoletsedwa bwino, kumakhala bwinoko.
Kupatsirana kowala: HPMC ikayikidwa m'madzi kuti ipange cholodi chowonekera, yang'anani kufalikira kwake. Kuchulukira kwa kufalikira kwa kuwala, kumakhala bwinoko. Zikutanthauza kuti muli zinthu zochepa zosasungunuka mmenemo. The transmittance of ofukula riyakitala zambiri zabwino, ndi yopingasa riyakitala ndi zoipa. Komabe, sizikutanthauza kuti khalidwe la ofukula riyakitala ndi bwino kuposa ya yopingasa riyakitala. Pali zinthu zambiri zomwe zimatsimikizira mtundu wa malonda.
Kukoka kwapadera: kukulitsa mphamvu yokoka yeniyeniyo, ndikolemera kwambiri, kumakhala bwinoko. Nthawi zambiri, ndichifukwa choti zomwe zili mu hydroxypropyl ndizokwera. Ngati zomwe zili mu hydroxypropyl ndizokwera, kusungirako madzi kumakhala bwinoko.
Kukoka kwapadera: kukulitsa mphamvu yokoka yeniyeniyo, ndikolemera kwambiri, kumakhala bwinoko. Nthawi zambiri, ndichifukwa choti zomwe zili mu hydroxypropyl ndizokwera. Ngati zomwe zili mu hydroxypropyl ndizokwera, kusungirako madzi kumakhala bwinoko.
Kodi njira zosungunulira za hydroxypropyl methyl cellulose ndi ziti?
Zitsanzo zonse zikhoza kuwonjezeredwa ku zipangizo ndi njira yosakaniza youma;
Pamene ikufunika kuwonjezeredwa mwachindunji ku njira yamadzimadzi kutentha kwa firiji, ndi bwino kugwiritsa ntchito mtundu wa kubalalitsidwa kwa madzi ozizira. Nthawi zambiri, imatha kukulitsidwa mkati mwa mphindi 10-90 mutawonjezera (kuyambitsa)
Zitsanzo wamba zikhoza kusungunuka mutatha kusakaniza ndi kumwazikana ndi madzi otentha, kuwonjezera madzi ozizira, oyambitsa ndi kuzizira;
Ngati caking ndi kukulunga kumachitika panthawi ya kusungunuka, ndi chifukwa cha kusakaniza kosakwanira kapena zitsanzo wamba zimawonjezedwa mwachindunji kumadzi ozizira. Panthawi imeneyi, iyenera kugwedezeka mwamsanga.
Ngati thovu amapangidwa panthawi ya kusungunuka, amatha kuchotsedwa poyimirira kwa maola 2-12 (nthawi yeniyeni imadalira kugwirizana kwa yankho), vacuuming, pressurizing ndi njira zina, kapena kuwonjezera mlingo woyenera wa defoamer.
Kodi hydroxypropyl methyl cellulose imagwira ntchito yotani pakugwiritsa ntchito ufa wa putty, komanso ngati pali chemistry?
Mu putty powder, imagwira ntchito zitatu: makulidwe, kusunga madzi ndi kumanga. Kukhuthala, cellulose imatha kukhuthala, kuyimitsa kuyimitsa, kusunga yunifolomu ya yankho m'mwamba ndi pansi, ndikukana kugwa. Kusunga madzi: pangani ufa wa putty kuti uume pang'onopang'ono, ndipo thandizani laimu calcium kuti achitepo kanthu pansi pa madzi. Zomangamanga: cellulose imakhala ndi mafuta, zomwe zingapangitse ufa wa putty kukhala ndi ntchito yabwino. HPMC satenga nawo gawo pazamankhwala aliwonse, koma imagwira ntchito yothandiza.
Kodi kutentha kwa gel wa hydroxypropyl methyl cellulose kumakhudzana bwanji?
Kutentha kwa gel wa HPMC kumagwirizana ndi zomwe zili ndi methoxyl. Kutsika kwa methoxyl, kumapangitsa kutentha kwa gel.
pali ubale uliwonse pakati pa kugwa kwa putty powder ndi hydroxypropyl methyl cellulose?
Chofunika!!! HPMC ili ndi kusasunga bwino kwa madzi, zomwe zingayambitse kutayika kwa ufa.
Kugwiritsa ntchito hydroxypropyl methyl cellulose mu putty powder, chifukwa chiyani ma thovu mu putty powder ndi chiyani?
HPMC imagwira ntchito zitatu mu putty powder: thickening, kusunga madzi ndi kumanga. Zifukwa za bubbles ndi izi:
Madzi ochuluka amawonjezeredwa.
Ngati mukwapula wosanjikiza wina pansi musanawume, ndizosavuta kutulutsa.
Nthawi yotumiza: Sep-27-2022