Hydroxypropyll methylcellulose (hpmc) ndi cellulose yopanda inic ether et ether ether ether ether ether ether ether ether ether ether kuchokera ku cellose yachilengedwe ya polymer kudzera njira zingapo zamankhwala. Ndiwo ufa wopanda mafuta, wopanda tanthauzo komanso wopanda thupi womwe umatupa mu colloidal yankho lomveka bwino m'madzi ozizira. Ikukulitsa, kumanga, kubalalitsa, ndikubalalitsa, kupanga filimu, kuyimitsa, kukhazikika, kufinya katundu wa colloid. Hydroxypropyl Mealulose ndi methyl cellulose ingagwiritsidwe ntchito popanga, utoto, kupanga, mankhwala, chakudya chamasiku onse.
Kusunga kwamadzi ndi mfundo za hydroxypropyl methylcellulose hpmc
Cellulose ether hpmc makamaka amagwiritsa ntchito njira yosungira madzi ndi kukula kwa matope a simenti ndi gypsum, ndipo amatha kusintha mwamphamvu mphamvu ndi kukana kwamphamvu kwa slurry.
Zinthu monga kutentha kwa mpweya, kutentha ndi kuthamanga kwa mphepo kumakhudza kuchuluka kwa madzi mu matope a simenti ndi gypsum. Chifukwa chake, nthawi zosiyanasiyana, pali kusiyana kwinanso m'madzi osungiramo zinthu zomwe zimapangidwa ndi HPMC yowonjezeredwa. Mu zomanga zina, kuchuluka kwa madziwo kumatha kusinthidwa ndikukulitsa kuchuluka kwa HPMC yowonjezeredwa. Kusunga kwamadzi kwa methyl cellulose ether kumatentha kwambiri ndi chizindikiro chofunikira kusiyanitsa mtundu wa methyl cellulose ether. Zinthu zochulukirapo hpmc zimathetsa bwino vuto la madzi osungidwa kutentha kwambiri. Mu nyengo zotentha kwambiri, makamaka m'malo otentha ndi owuma ndi zomangamanga zowonda m'mbali mwa dzuwa, hpmc zapamwamba kwambiri zimafunikira kukonza chitetezo chamadzi cha slorry. HPMC yapamwamba kwambiri imakhala ndi kufanana kwakukulu. Magulu ake a methoxy ndi hydroxyprophoxy amagawidwa mogwirizana ndi ma cellulose molecula ophatikizira maatomu a oxygen pa hydroxyl yolumikizana ndi madzi kuti apange zomangira za hydrogen. , kotero kuti madzi aulere amathira madzi omangidwa, kuti athetse bwino madzi oyambitsidwa chifukwa cha nyengo, ndikukwaniritsa madzi ambiri.
Cellulose kwambiri mu cellulose HPMC imatha kukhala mogwirizana komanso moyenera mankhwala osokoneza bongo a simenti ndi gypsum, ndikukulani tinthu tating'onoting'ono, ndikuyika filimu yonyowa pang'onopang'ono, ndi gulu lonyowa Kuchitira nkhaka Kuchita Zinthu Zokondedwa kuonetsetsa kuti mulimbikitso ndi kulimba mtima kwa zinthuzo. Chifukwa chake, mu mamangidwe otentha kwambiri chilimwe, kuti mukwaniritse madzi a HPMC mokwanira mokwanira molingana ndi njira, ndi kubzala zoyambitsidwa ndi kuyanika kwambiri. Mavuto, komanso kuwonjezera zovuta zomangamanga. Pamene kutentha madontho, kuchuluka kwa HPMC yowonjezeredwa kumatha kuchepetsedwa pang'onopang'ono, ndipo madzi omwewo akwaniritsidwe.
Kusunga kwamadzi kwa hydroxpyl methylcellulose zinthu zomwe zimakhudzidwa ndi zinthu zotsatirazi:
Ambiri adalandira HPMC, methoxyl ndi hydroxypropoxyl amagawidwanso, ndipo ndalama zosunga madzi ndizokwera;
Cellulose etherc mafuta a gel osakaniza ndi okwera, mtengo wosunga madzi ndi wokwera; Kupanda kutero, kusunga madzi osunga madzi kumakhala kotsika;
Pamene mawilo a cellulose ether hpmc amawonjezeka, kusunga madzi kumawonjezekanso. Mawonekedwe akafika pamlingo winawake, kuwonjezeka kwa ndalama zosunga madzi kumakhala zodekha;
Kuchuluka kwa cellulose ether hpmc kuwonjezera, kuchuluka kwa malo osungitsa madzi ndikuwongolera madzi. Mu mitundu ya 0,25-0.6%, kuchuluka kwa madzi kumawonjezera mwachangu ndi kuchuluka kwa kuchuluka kwa zowonjezera; Kuphatikiza apo kumawonjezeka, kuchuluka kwa kuchuluka kwa madzi osunga madzi kumachepa.
Post Nthawi: Jun-01-2023