Pakali pano, khalidwe la zoweta hydroxypropyl methylcellulose zimasiyanasiyana kwambiri, ndipo mtengo zimasiyanasiyana kwambiri, kupanga kukhala kovuta kwa makasitomala kusankha bwino.HPMC yosinthidwa ya kampani yakunja yomweyo ndi zotsatira za kafukufuku wazaka zambiri.Kuphatikizika kwa zinthu zowunikira kumatha kupititsa patsogolo ntchito yomanga ndikuwongolera magwiridwe antchito.Zachidziwikire, zikhudza zinthu zina, koma nthawi zambiri zimakhala zothandiza;Cholinga chokhacho chowonjezera zinthu zina ndikuchepetsa ndalama, zomwe zimapangitsa kuchepetsa kwambiri kusunga madzi, kugwirizanitsa ndi zina za mankhwala, zomwe zimapangitsa kuti pakhale mavuto ambiri a zomangamanga.
Pali kusiyana kotere pakati pa HPMC yoyera ndi HPMC yonyansa:
1. HPMC yoyera ndi yowoneka bwino ndipo imakhala yochepa kwambiri, kuyambira 0.3-0.4g/ml;HPMC wonyengedwa ali ndi madzimadzi bwino ndipo amamva kulemera, zomwe mwachiwonekere zimasiyana ndi mankhwala enieni m'mawonekedwe.
2. Yangwiro HPMC amadzimadzi yothetsera ndi bwino, mkulu kuwala transmittance, ndi madzi posungira mlingo ≥ 97%;HPMC amadzimadzi njira yothetsera mitambo ndi mitambo, ndi mlingo posungira madzi ndi kovuta kufika 80%.
3. Koyera HPMC sayenera fungo ammonia, wowuma ndi mowa;HPMC yowonongeka imatha kununkhiza mitundu yonse ya fungo, ngakhale itakhala yopanda pake, imamva kulemera.
4. Ufa woyera wa HPMC ndi ulusi pansi pa microscope kapena galasi lokulitsa;HPMC yosokoneza imatha kuwonedwa ngati zolimba zolimba kapena makhiristo pansi pa maikulosikopu kapena galasi lokulitsa.
Kutalika kosagonjetseka kwa 200,000?
Akatswiri ambiri apakhomo ndi akatswiri asindikiza mapepala omwe amakhulupirira kuti kupanga kwa HPMC kumaletsedwa ndi chitetezo cha zipangizo zapakhomo ndi kusindikiza, ndondomeko ya slurry ndi kupanga otsika kwambiri, ndipo mabizinesi wamba sangathe kupanga zinthu zokhala ndi viscosity yoposa 200,000.M'chilimwe, ndizosatheka kupanga zinthu zokhala ndi mamasukidwe opitilira 80,000.Amakhulupirira kuti zinthu zomwe zimatchedwa 200,000 ziyenera kukhala zabodza.
Zotsutsa za akatswiri sizomveka.Malinga ndi momwe zakhalira kale zopanga zapakhomo, zomwe tafotokozazi zitha kuganiziridwadi.
Chinsinsi kuonjezera mamasukidwe akayendedwe a HPMC ndi kusindikiza mkulu wa riyakitala ndi mkulu-anzanu zimachitikira komanso apamwamba zipangizo zopangira.Kuthamanga kwapamwamba kwa mpweya kumalepheretsa kuwonongeka kwa cellulose ndi mpweya, ndipo chikhalidwe chapamwamba chapamwamba chimalimbikitsa kulowa kwa etherification agent mu cellulose ndikuwonetsetsa kuti mankhwalawa ndi ofanana.
Mndandanda wa 200000cps hydroxypropyl methylcellulose:
2% kukhuthala kwamadzimadzi 200000cps
Kuyera kwazinthu ≥98%
Zinthu za Methoxy 19-24%
Zolemba za Hydroxypropoxy: 4-12%
200000cps hydroxypropyl methylcellulose mbali:
1. Kusungirako bwino kwa madzi ndi kukhuthala kuti kuwonetsetse kuti slurry ikhale yokwanira.
2. Mphamvu zomangirira kwambiri komanso zopatsa mphamvu zowonjezera mpweya, zimalepheretsa bwino kuchepa ndi kusweka.
3. Kuchedwetsa kutulutsa kutentha kwa simenti hydration, kuchedwetsa nthawi yoyika, ndikuwongolera nthawi yogwira ntchito yamatope a simenti.
4. Kupititsa patsogolo kusasinthasintha kwa madzi a matope opopera, kusintha rheology, ndi kupewa tsankho ndi magazi.
5. Zogulitsa zapadera, zomwe zimayang'ana malo omangira kutentha kwambiri m'chilimwe, kuti zitsimikizire kuti hydration yabwino ya slurry popanda delamination.
Chifukwa choyang'anira msika wosasamala, mpikisano wamakampani opanga matope ukukula kwambiri.Pofuna kupeza msika, amalonda ena asakaniza zinthu zambiri zotsika mtengo kuti apange cellulose ether yotsika mtengo.Apa, mkonzi akuyenera kukumbutsa makasitomala kuti asatsatire mwachimbulimbuli mitengo yotsika, kuti asapusitsidwe Anyengedwe, atsogolere ku ngozi zaumisiri, ndipo pamapeto pake zotayikazo zimaposa zopindulitsa.
Njira zodziwika bwino zochizira ndi kuzizindikiritsa:
(1) Kuphatikizika kwa amide ku cellulose ether kumatha kukulitsa kukhuthala kwa cellulose ether solution, zomwe zimapangitsa kuti zikhale zosatheka kuzizindikira ndi viscometer.
Njira yozindikiritsira: Chifukwa cha mawonekedwe a ma amides, njira yamtundu wa cellulose ether nthawi zambiri imakhala ndi chodabwitsa, koma efa yabwino ya cellulose sidzawoneka chodabwitsa pambuyo pa kusungunuka, yankho liri ngati odzola, otchedwa omata koma osalumikizana.
(2) Onjezani wowuma ku cellulose ether.Wowuma nthawi zambiri sasungunuka m'madzi, ndipo yankho lake nthawi zambiri limakhala ndi kuwala koyipa.
Njira yozindikiritsira: Donthotsani yankho la cellulose ether ndi ayodini, ngati mtundu usanduka buluu, zitha kuganiziridwa kuti wowuma wawonjezedwa.
(3) Onjezani ufa wa mowa wa polyvinyl.Monga tonse tikudziwa, mtengo wamsika wa ufa wa polyvinyl mowa monga 2488 ndi 1788 nthawi zambiri umakhala wotsika kuposa wa cellulose ether, ndipo kusakaniza ufa wa polyvinyl mowa kumatha kuchepetsa mtengo wa cellulose ether.
Njira yozindikiritsira: Mtundu wa cellulose ether nthawi zambiri umakhala wowoneka bwino komanso wandiweyani.Amasungunuka mwamsanga ndi madzi, sankhani yankho ndi ndodo ya galasi, padzakhala chodabwitsa chodziwika bwino.
Mwachidule: Chifukwa cha mapangidwe ake apadera ndi magulu, kusungirako madzi kwa cellulose ether sikungasinthidwe ndi zinthu zina.Ziribe kanthu kuti zodzaza zamtundu wanji zimasakanizidwa, malinga ngati zisakanizidwa ndi kuchuluka kwakukulu, kusunga kwake madzi kudzachepetsedwa kwambiri.Kuchuluka kwa HPMC yokhala ndi mamasukidwe abwinobwino a 10W mumtondo wamba ndi 0,15 ~ 0.2 ‰, ndipo kuchuluka kwa madzi ndi> 88%.Kutuluka magazi ndizovuta kwambiri.Choncho, kuchuluka kwa madzi osungiramo madzi ndi chizindikiro chofunikira choyezera ubwino wa HPMC, kaya ndi wabwino kapena woipa, malinga ngati akuwonjezeredwa kumatope, zidzamveka bwino pang'onopang'ono.
Nthawi yotumiza: May-10-2023