Hydroxypylth methylcellulose (hpmc) ndizowonjezera zamankhwala, zomwe zimagwiritsidwa ntchito kwambiri m'minda yambiri monga kapangidwe kake pomanga, mankhwala, chakudya, ndi zodzola. Ili ndi mphamvu yabwino, yofuula, yopingasa, yopanga filimu, komanso katundu katundu, ndipo ali ndi kutentha kwina kwa kutentha ndi ph. Kusungunuka kwa HPMC ndi chimodzi mwazinthu zofunikira pakugwiritsa ntchito. Kumvetsetsa njira yolondola yosinthika ndikofunikira kuti zitsimikizire momwe akugwirira ntchito.
1. Kusungunuka koyambirira kwa HPMC
Hydroxypropyll methyllulose ndi ma cellulose a celluuse omwe amatha kusungunuka m'madzi ozizira kapena otentha kuti apange njira yowonekera kapena yosinthira ma viscous. Kusungunuka kwake kumakhudzidwa kwambiri ndi kutentha. Ndikosavuta kusungunuka m'madzi ozizira komanso kosavuta kupanga colloid m'madzi otentha. HPMC ili ndi mpweya wamafuta, ndiye kuti, ili ndi kusakhazikika kosayenera pamatenthedwe okwera, koma imatha kusungunuka kwathunthu pomwe matenthedwe amatsitsidwa. HPMC imakhala ndi zolemera zosiyanasiyana komanso ma viscosties, momwemonso mkati mwa kusungunuka, mtundu woyenera wa HPMC uyenera kusankhidwa malinga ndi zofunikira zamalonda.
2. Njira yopumira ya HPMC
Njira yozizira yobalalika
Njira yozizira imabala njira yomwe imagwiritsidwa ntchito kwambiri yomwe imagwiritsidwa ntchito kwambiri ya HPMC ndipo ndiyoyenera kugwiritsa ntchito malo ambiri. Malingaliro ake ali motere:
Konzani madzi ozizira: Thirani kuchuluka kwa madzi ozizira mu chidebe chosakanikirana. Kutentha kwamadzi nthawi zambiri kumalimbikitsidwa kukhala pansi pa 40 ° C kuti mupewe kupangira ma pulowa pamphuno kwambiri.
Pang'onopang'ono onjezani HPMC: Pang'onopang'ono onjezani HPMC ufa ndi kupitiriza kusuntha. Kuti mupewe ufa wowuma, liwiro lofunikira loyenera liyenera kugwiritsidwa ntchito potsimikizira kuti HPMC imabalalika kwambiri m'madzi.
Kuyimirira ndikusungunuka: Pambuyo pa HPMC imabalalitsidwa m'madzi ozizira, iyenera kuyimilira kwa nthawi yayitali kuti isungunuke kwathunthu. Nthawi zambiri, imasiyidwa kwa mphindi 30 mpaka maola angapo, ndipo nthawi yeniyeni imakhala yosiyanasiyana malinga ndi mtundu wa HPMC ndi kutentha kwamadzi. Panthawi yoyimirira, HPMC imasungunuka pang'onopang'ono kupanga njira yothetsera ma viscous.
Njira Yotentha Yotentha
Njira yotentha yopumira ndi yoyenera kwa mitundu ina ya HPMC yokhala ndi ma victcketor apamwamba kapena ovuta kusungunuka kwathunthu m'madzi ozizira. Njirayi ndiyosakaniza koyamba kusakaniza ufa wa hpmc wokhala ndi madzi otentha kuti apange phala, kenako sakanizani ndi madzi ozizira kuti mupeze yankho la yunifolomu. Malingaliro ake ali motere:
Kuphika madzi: Tenthetsani madzi pafupifupi 80 ° C ndikuwathira chidebe chosakanikirana.
Powonjezera ufa wa HPMC: Thirani ufa wa hpmc m'madzi otentha ndikuyambitsa pomwe mukuthira kuti apange osakaniza. M'madzi otentha, hpmc sidzasungunuka kwakanthawi ndikupanga zinthu zowoneka bwino ngati gel.
Kuonjezera madzi ozizira kuti muchepetse: Pambuyo pa phala losakaniza limazizira, pang'onopang'ono onjezani madzi ozizira kuti azitha kuthira ndikupitilizabe kusungunuka mpaka kusungunuka kwathunthu kapena kusinthana.
Njira yofafukula yofalitsidwa
Nthawi zina, kuti afulumizire kusungunuka kwa HPMC kapena kupititsa patsogolo ntchito zosinthika za mapulogalamu ena apadera, zosungunulira zomwe zingagwiritsidwe ntchito kusakaniza ndi madzi kuti musungunuke ndi HPMC. Mwachitsanzo, ma solic okhazikika monga Ethanol ndi acetone angagwiritsidwe ntchito kufalitsa HPMC yoyamba, kenako madzi amatha kuwonjezeredwa kuthandiza hpmc mwachangu. Njirayi imagwiritsidwa ntchito nthawi zambiri popanga zinthu zina zosungunulira, monga zokutira ndi zotupa.
Njira Yowuma
Njira yowuma youma ndiyoyenera pakupanga mafakitale ambiri. HPMC imakonda kusakanikirana ndi zida zina za ufa (monga simenti, gypsum, etc.), kenako madzi amawonjezeredwa kusakaniza. Njirayi ingasinthe kugwira ntchito ndikupewa vuto la chibwibwi pomwe hpmc idasungunuka, koma pamafunika kupanga kokwanira pambuyo powonjezera madzi kuti athetsetsetsa kuti HPMC imasungunuka.
3. Zinthu zomwe zikukhudza kuwonongeka kwa HPMC
Kutentha: Kusungunuka kwa HPMC kumakhala kovuta kwambiri kutentha. Kutentha kochepa kumakhala koyenera kubalalitsidwa ndi kusungunuka m'madzi, pomwe kutentha kwambiri kumapangitsa kuti ma colloids akhale a Colloids, kulepheretsa infortem yake yonse. Chifukwa chake, nthawi zambiri amalimbikitsidwa kugwiritsa ntchito madzi ozizira kapena kuwongolera kutentha kwamadzi pansi pa 40 ° C posungunula hpmc.
Liwiro losangalatsa: Kusasunthika koyenera kumatha kupewa bwino HPMC Hgglomeration, potero imathamangitsa kuchuluka kwa chilengedwe. Komabe, kuthamanga kwambiri kosangalatsa kusunthira kungayambitse kuchuluka kwa thovu ndikusokoneza kufanana kwa yankho. Chifukwa chake, pakugwira ntchito kwenikweni, liwiro loyenera losangalatsa ndi zida ziyenera kusankhidwa.
Ubwino Wam'madzi: Zosayipa, kuuma, mtengo wamtengo, etc. m'madzi adzakhudza kususuka ku HPMC. Makamaka, calcium ndi magnesium maboon m'madzi olimba amatha kuchitika ndi HPMC ndikukhudza kususuka kwake. Chifukwa chake, kugwiritsa ntchito madzi oyera kapena madzi ofewa kumathandizira kusintha kusungunuka kwa HPMC.
Kulemera kwa HPMC ndi Kulemera kwa HPMC: Mitundu yosiyanasiyana ya HPMC imasiyana pakulephera, mafayilo ndi kusungunuka kutentha. HPMC yokhala ndi kulemera kwakukulu kwa mabatani imasungunuka pang'onopang'ono, imakhala ndi njira yayitali yothetsera, ndikutenga nthawi yayitali kusungunuka kwathunthu. Kusankha mtundu woyenera hpmc kumatha kusintha kufatsa bwino ndikukwaniritsa zofunikira kugwiritsa ntchito.
4. Mavuto Azomwe Amakonda Ndi Mayankho a HPMC
Vuto laukwati: pomwe HPMC idasungunuka m'madzi, kuphatikizika kumatha kupanga ngati ufa sunamwakere. Popewa vutoli, hpmc iyenera kuwonjezedwa pang'onopang'ono pa kusungunuka ndikusungidwa pa liwiro lofunikira, ndikupewa kuwonjezera ufa wa HPMC pa kutentha kwambiri.
Njira Yosagwirizana: Ngati kusuntha sikukwanira kapena nthawi yolimba sikukwanira, hpmc sikungakhale kusungunuka kwathunthu, zomwe zimapangitsa kuti yankho lithe. Pakadali pano, nthawi yosangalatsa iyenera kukulitsidwa kapena nthawi yoyimilira iyenera kukulitsidwa kuti zitsimikizidwe kuti zisintha.
Vuto la bubble: Kupititsa patsogolo kwa madzi kapena zosafunikira m'madzi kungayambitse kuchuluka kwa thovu, zomwe zimakhudza mtundu wa yankho. Pachifukwa ichi, tikulimbikitsidwa kuwongolera liwiro losangalatsa mukatha kuwononga hpmc kuti mupewe thovu kwambiri, ndikuwonjezera decomer ngati pakufunika kutero.
Kuwonongeka kwa HPMC ndi chinsinsi chofunikira pakufunsira kwake. Kuzindikira njira yolondola yosinthika kumathandizira kukonza bwino ntchito zopanga ndi zopanga. Malinga ndi mitundu yosiyanasiyana yazofunikira za HPMC ndi kugwiritsa ntchito madzi okwanira, madzi otentha asanakhale, osakanikirana kapena kusakaniza kochepa kumatha kusankhidwa. Nthawi yomweyo, chidwi chiyenera kulipidwa kuti liziwongolera zinthu monga kutentha, liwiro losangalatsa ndi mtundu wamadzi panthawi yomwe kusungunuka ndi kupewa mavuto monga kuphatikizika, thovu ndi zosinthika zosakwanira. Pofuna kukwaniritsa zosungunuka, zitha kutsimikiziridwa kuti hpmc imatha kusewera kwathunthu ndi katundu wopangidwa ndi filimu, ndikupereka njira zapamwamba kwambiri zamafashoni osiyanasiyana komanso tsiku lililonse.
Post Nthawi: Sep-30-2024