Hydroxypropyl me cellulose hpmc ndi ma cellulose omwe amapangidwa ndi ether opangidwa kuchokera ku cellulose yachilengedwe ya polymer kudzera pakusintha kwamankhwala. Ndiwo ufa wopanda mafuta, wopanda mphamvu komanso wosazinga womwe umatupa mu colloidal yankho lomveka bwino m'madzi ozizira. Ili ndi mawonekedwe a kukula, kugwirizanitsa, kubalalika, emulsization, mawonekedwe a makanema, kusungidwa, kusungidwa, ntchito yoteteza ndi kuteteza colloid. Hydroxypropyl itha kugwiritsidwa ntchito pomanga zida zomangira, zopanga malonda, zopanga, mankhwala, chakudya, mafakitale amasiku tsiku lililonse.
Ntchito yosungidwa yamadzi ndi mfundo: cellulose ether hpmc makamaka ikhale ndi gawo lamadzi komanso kukula kwa matope a simenti ndi gypsum, chomwe chimatha kusintha bwino mphamvu ndi kukana kwa ambale. 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 zosiyana zina mumadzi zomwezo za HPMC. 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 zotsatizana zabwino hpmc zimatha kuthana bwino ndi vuto la kusungidwa kwamadzi pamtenthedwe 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 amadzimanga m'madzi, mozama amalamulira madzi mosamalitsa chifukwa cha nyengo ya kutentha kwambiri, ndikuti madzi otentha kwambiri.
Cellulose kwambiri pa cellulose imatha kukhala mogwirizana komanso moyenera mankhwala a simenti ndi gypsum, ndikukulani tinthu tating'onoting'ono, ndikupanga kaphiri wonyowa. Madzi omwe amakhala pang'onopang'ono amasulidwa pang'onopang'ono kwa nthawi yayitali. Zinthu zokhumudwitsa zomwe zimachitika zomwe zimachitika mwa kugwiritsa ntchito mphamvu, kuti zitsimikizire kulimba kwa zinthuzo. Chifukwa chake, mu Kumanga kutentha kwanyengo, kuti mukwaniritse zotsatira zamadzi, zinthu zapamwamba za HPMC ziyenera kuwonjezeredwa mokwanira malinga ndi njira, popanda, kusakwanira, kuchepetsedwa, kugwa ndikugwa idzachitika chifukwa choyanika kwambiri. Mavuto, komanso kuwonjezera zovuta zomanga. Pamene kutentha kumachepa, kuchuluka kwa hpmc kuwonjezeredwa kumatha kuchepa pang'onopang'ono, ndipo madzi omwewo atha kukwaniritsidwa.
Kusunga kwamadzi kwa HPMC kumakhudzidwa ndi zinthu zotsatirazi:
1.
Mu homogeneous adalanda hpmc, methoxy ndi hydroxyprophoroxy magulu amagawidwanso, ndipo ndalama zosunga madzi ndizokwera.
2. Kutentha kwa gel gel otentha kwa cellulose ether hpmc
Kutentha kwa mafuta kwa gel kulimwamba, mtengo wosunga madzi ndi wokwera; M'malo mwake, kuchuluka kwa madzi kuli kotsika.
3. Makulidwe a cellulose ether hpmc
Pamene mafakidwe a HPMC amawonjezeka, kuchuluka kwa madziwo kumawonjezekanso. Mawonekedwe akafika pamlingo wina, kuwonjezeka kwa madzi osunga madzi kumafuna kukhala phee.
4. Zowonjezera za cellulose ether hpmc
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 kumawonjezeranso, zomwe zimachitika kuti madzi osungitsa madzi achepe.
Post Nthawi: Disembala 16-2021