HPMC (Hydroxypropyll Methylcellulose) ndi HeC (Hydroxyethyl Cellose) Kodi ma cellulose omwe amagwiritsidwa ntchito kwambiri) ndi mankhwala, malo ogwiritsira ntchito, etc.
1. Kusiyana kwa kapangidwe ka mankhwala
HPMC ndi Hec ndi ma cellulose edzotion edrs freculose (monga thonje kapena zamkati zamkati), koma zimasiyana m'mipata:
HPMC (hydroxypypyl methylcellulose): hpmc imapezeka mwa mitundu ina ya ma hydroxyl (-Ch₃) ndi hydroxyppyl (-ch₂ch (-ch₂ch (oh) cellulose. Mlingo wa polowa m'malo mwa methyl ndi hydroxypyl magulu amatsimikizira kuti katundu wa HPMC.
Hec (hydroxethyl cellulose): Heal ndi cellulose yopangidwa ndi magulu a ma hydroxyl magulu a cellulose omwe ali ndi hydroxuthyl.
Kusiyana uku mu kapangidwe ka mankhwala kumakhudza kusandulika kwawo kusungunuka, mafakisoni, ndi zina zakuthupi ndi mankhwala.
2. Solubility ndi kusungunuka mikhalidwe
HPMC: HPMC ili ndi madzi abwino kwambiri osungunuka ndipo imatha kusungunuka m'madzi ozizira kuti apange yankho lowonekera. Itha kusungunukanso m'malo okhazikika monga ethanol, acetone, etc., koma digiri yofatsa ndi digiri imasiyana m'malo mwake. Gawo lofunikira la HPMC ndikuti limasungunuka m'madzi ozizira, pomwe pakutenthetsa, limatembenuka kukhala gel pomwepo umatentha ndikusungunuka pomwe adazizira). Katunduyu ndi wofunikira kwambiri m'minda monga zomanga ndi zoyankhulira.
Hec: Hec imasungunuka m'madzi ozizira, koma mosiyana ndi HPMC, hec sikulunga m'madzi otentha. Chifukwa chake, hec imatha kugwiritsidwa ntchito poyenda pang'ono. Hec ali ndi kulolerana kwamchere komanso kutumphuka ndipo ndi yoyenera kugwiritsa ntchito mayankho okhala ndi ma eleclyte.
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Makulidwe a HPMC ndi Hec amasiyana ndi kulemera kwawo kwa ma molecular, ndipo onse ali ndi zotsatira zabwino zamitundu yosiyanasiyana:
HPMC: HPMC imawonetsa pseudoplastity pseudoplaty (mwachitsanzo, kugwetsa minda yochepa) poyankha. Makutu a HPMC mayankho a HPMC amachepetsa, ndikuwapangitsa kukhala oyenera kugwiritsa ntchito zowonjezera kapena kutsuka, zodzoladzola, etc. mawonekedwe ochulukirapo.
Hec: Hec mayankho apamwamba ndi katundu wabwino kwambiri pamitengo yotsika, ndikuwonetsa katundu wabwino wa Newtonian (mwachitsanzo, kupsinjika kwa Shear ndikofanana ndi chiwongola dzanja). Kuphatikiza apo, mayankho a hec ali ndi mafayilo ang'onoang'ono amasintha m'malo okhala ndi mchere ndi ma electrolyte, komanso amakhala ndi mchere wotsutsana. Amagwiritsidwa ntchito kwambiri m'minda yomwe imafuna kusagwirizana ndi kutentha kukana mchere, monga mankhwala opangira mafuta ndi chithandizo chamatoma.
4. Kusiyana pagawo la ntchito
Ngakhale onse a HPMC ndi Hec akhoza kugwiritsidwa ntchito ngati otsatsa, omata, tsamba la filimu, okhazikika, etc.,
Ntchito za HPMC:
Makampani omanga: HPMC imagwiritsidwa ntchito ngati wothandizira wambiri ndi madzi osungira madzi m'minda yomanga monga matope a sile, ndi matanthki a ceramic. Zimakhala bwino kugwiritsidwa ntchito kwa matope, kumasuka kusamba, ndikupitilira nthawi yotseguka ya matope.
Mankhwala opangira mankhwala ndi zakudya: Mankhwala, hpmc nthawi zambiri amagwiritsidwa ntchito ngati zophatikizira mapiritsi ndi zida zamagetsi zokonzekera kukoma. Mu makampani ogulitsa zakudya, hpmc amagwiritsidwa ntchito ngati chowonjezera cha chakudya, makamaka ngati emulsifier, triclkener, ndi kukhazikika.
Makampani amakampani tsiku lililonse: HPMC imagwiritsidwa ntchito ngati emulsion rubizeli, makulidwe, komanso zoteteza filimu yoteteza mu zodzola ndi zinthu za patokha.
Ntchito za Hec:
Kuchotsera mafuta: Popeza Hec ali ndi mwayi wololera mchere, kumathandiza kwambiri kuti azichita bwino kwambiri chifukwa cha madera omwe ali ndi mchere wambiri kuti azitha kusintha michere ya matope.
Makampani okutira: Hec amagwiritsidwa ntchito ngati thickir ndi kusungunuka pakubala kwa madzi. Zimatha kukonza madzi ndi magwiridwe antchito okutira ndi kupewa zokutira kuti zisagwedezeke.
Makampani opanga mapepala komanso osankhidwa amatha kugwiritsidwa ntchito popanga mankhwala opanga mapepala komanso osalala mu makampani opanga malembawo kuti athetse, kusintha ndi kusintha mitundu ya nkhanza.
5. Kukhazikika kwachilengedwe ndi zopanda pake
HPMC: HPMC imagwiritsidwa ntchito mu minda ya mankhwala ndi chakudya chifukwa cha zinthu zake zabwino komanso biodegradiity. Mphamvu zake zowoneka bwino zimapatsanso izi kukhala zapadera za kutentha kwina kwamachitidwe ena. Kuphatikiza apo, HPMC ndi osagwirizana, osakhudzidwa ndi ma elemaltte, ndipo amakhala ndi bata bwino kubwereza.
Hec: Hec alinso ndi zinthu zabwino komanso biodegradiibit, koma imawonetsa kukhazikika kwakukulu m'malo otentha kwambiri. Chifukwa chake, hec ndi chisankho chabwinoko komwe kusakaniza mchere ndi kukana kwa elecrolyte kumafunikira, monga kufufuzidwa kwamafuta, mainjiniya
6. Mtengo ndi kupereka
Popeza onse awiri a HPMC ndi Hec amachokera ku cellulose yokhazikika, zopangira zopangira zimakhala, koma chifukwa cha njira zosiyanasiyana zopangira, mtengo wopanga wa HPMC nthawi zambiri kuposa a HeC. Izi zimapangitsa kuti bic igwiritsidwa ntchito kwambiri pamapulogalamu ena okwera mtengo, monga zida zomangira, mafuta am'madzi, etc.
HPMC ndi Hec onse ndi ofunika kwambiri pa cellulose. Ngakhale ndi osiyana ndi kapangidwe kake, onse ali nawo amagwira ntchito monga kukula, kukhazikika, kusungidwa kwamadzi ndikupanga mafilimu. Pankhani ya kusankha kwapadera, hpmc imakhala ndi udindo womanga, kukonzekera kwa mankhwala opangira mankhwala ndi zakudya zomwe zimapezeka chifukwa cha mafuta ake apadera; Pomwe Hec amachita gawo lofunikira m'makampani a petroleum chifukwa cha kulolera kwake koyenera komanso kutentha kwakukulu. Zopindulitsa kwambiri mu migodi ndi zokutira zamadzi. Malinga ndi zofunika kugwiritsa ntchito, kusankha zochokera ku cellulose kumatha kukonza magwiridwe antchito ndi mapindu azachuma.
Post Nthawi: Feb-17-2025