Pakadali pano, ubwino wa hydroxypropyl methylcellulose yapakhomo umasiyana kwambiri, ndipo mtengo wake umasiyana kwambiri, zomwe zimapangitsa kuti makasitomala asamasankhe bwino. HPMC yosinthidwa ya kampani yakunja yomweyi ndi zotsatira za kafukufuku wazaka zambiri. Kuwonjezera zinthu zochepa kungathandize kuti ntchito yomanga igwire bwino ntchito ndikuwonjezera magwiridwe antchito. Zachidziwikire, izi zidzakhudza zinthu zina, koma nthawi zambiri zimakhala zothandiza; Cholinga chokha chowonjezera zosakaniza zina ndikuchepetsa ndalama, zomwe zimapangitsa kuti madzi asasungidwe bwino, mgwirizano ndi zinthu zina za chinthucho, zomwe zimapangitsa kuti pakhale mavuto ambiri pa ntchito yomanga.
Pali kusiyana kotsatira pakati pa HPMC yoyera ndi HPMC yosakanizidwa:
1. HPMC yoyera ndi yofewa ndipo ili ndi kachulukidwe kochepa, kuyambira 0.3-0.4g/ml; HPMC yosakanizidwa imakhala ndi kusinthasintha kwabwino ndipo imamveka yolemera, zomwe zimasiyana kwambiri ndi mawonekedwe enieni.
2. Yankho lamadzi loyera la HPMC ndi loyera, limatumiza kuwala kwambiri, ndipo kuchuluka kwa madzi kumasungidwa ≥ 97%; yankho lamadzi la HPMC losakanizidwa ndi mitambo, ndipo kuchuluka kwa madzi kumasungidwa kumakhala kovuta kufika 80%.
3. HPMC yoyera siyenera kununkhiza ammonia, sitachi ndi mowa; HPMC yosakanizidwa nthawi zambiri imatha kununkhiza fungo la mitundu yonse, ngakhale itakhala yopanda kukoma, imamva yolemera.
4. Ufa weniweni wa HPMC ndi wa ulusi pansi pa maikulosikopu kapena galasi lokulitsa; HPMC yosakanikirana imatha kuwonedwa ngati granular solids kapena crystals pansi pa maikulosikopu kapena galasi lokulitsa.
Kutalika kosagonjetseka kwa 200,000?
Akatswiri ambiri a m'dziko muno ndi akatswiri afalitsa mapepala omwe amakhulupirira kuti kupanga kwa HPMC kumaletsedwa ndi chitetezo cha zida za m'nyumba ndi kutseka, njira yothira madzi ndi kupanga zinthu mopanda mphamvu zambiri, ndipo mabizinesi wamba sangapange zinthu zokhuthala zopitirira 200,000. M'chilimwe, n'zosatheka kupanga zinthu zokhuthala zopitirira 80,000. Amakhulupirira kuti zinthu zomwe zimatchedwa kuti 200,000 ziyenera kukhala zinthu zabodza.
Mfundo za katswiriyu sizomveka. Malinga ndi momwe zinthu zinalili kale m'nyumba, mfundo zomwe zili pamwambapa zitha kuganiziridwa.
Chofunika kwambiri pakuwonjezera kukhuthala kwa HPMC ndi kutseka kwambiri kwa reactor ndi kuthamanga kwambiri kwa mpweya komanso zinthu zopangira zapamwamba. Kupanda mpweya wabwino kwambiri kumalepheretsa kuwonongeka kwa cellulose ndi mpweya, ndipo kuthamanga kwambiri kwa mpweya kumapangitsa kuti etherification agent ilowe mu cellulose ndikuwonetsetsa kuti chinthucho chikugwirizana.
Mndandanda woyambira wa 200000cps hydroxypropyl methylcellulose:
2% madzi okhuthala 200000cps
Kuyera kwa malonda ≥98%
Kuchuluka kwa Methoxy 19-24%
Kuchuluka kwa Hydroxypropoxy: 4-12%
Makhalidwe a 200000cps hydroxypropyl methylcellulose:
1. Kusunga madzi bwino komanso kukhuthala bwino kuti madzi a slurry alowe bwino.
2. Mphamvu yolimba kwambiri komanso mphamvu yolumikizira mpweya, zimathandiza kuti ming'alu isachepe komanso kuti ming'alu isathe.
3. Chepetsani kutulutsa kutentha kwa madzi a simenti, chepetsani nthawi yokhazikitsa, ndikuwongolera nthawi yogwiritsira ntchito matope a simenti.
4. Kukonza kukhazikika kwa madzi a matope opompedwa, kukonza rheology, ndikuletsa kulekanitsa ndi kutuluka magazi.
5. Zinthu zapadera, zomwe cholinga chake ndi kumanga malo otentha kwambiri nthawi yachilimwe, kuti zitsimikizire kuti slurry imanyowa bwino popanda kusungunuka.
Chifukwa cha kuyang'aniridwa kosalekeza kwa msika, mpikisano mumakampani opanga zinthu zomangira nyumba ukukulirakulira. Pofuna kukwaniritsa zosowa za msika, amalonda ena asakaniza zinthu zambiri zotsika mtengo kuti apange cellulose ether yotsika mtengo. Pano, mkonzi akuyenera kukumbutsa makasitomala kuti asatsatire mitengo yotsika mwachisawawa, kuti asanyengedwe. Kunyengedwa, kumabweretsa ngozi zaukadaulo, ndipo pamapeto pake kutayika kumaposa phindu.
Njira zodziwika bwino zopezera chigololo ndi njira zodziwira:
(1) Kuonjezera amide ku cellulose ether kungapangitse kuti kukhuthala kwa yankho la cellulose ether kuwonjezereke mwachangu, zomwe zimapangitsa kuti zikhale zosatheka kuzizindikira ndi viscometer.
Njira Yodziwira: Chifukwa cha makhalidwe a amides, mtundu uwu wa yankho la cellulose ether nthawi zambiri umakhala ndi vuto la stringing, koma cellulose ether yabwino sidzawoneka vuto la stringing ikasungunuka, yankholo limakhala ngati jelly, lotchedwa sticky koma losalumikizidwa.
(2) Onjezani sitachi ku cellulose ether. Sitachi nthawi zambiri sichisungunuka m'madzi, ndipo nthawi zambiri yankho silitha kufalikira bwino.
Njira yodziwira: Thirani yankho la ether ya cellulose ndi ayodini, ngati mtunduwo ukhala wabuluu, zitha kuonedwa kuti wowuma wawonjezedwa.
(3) Onjezani ufa wa polyvinyl alcohol. Monga tonse tikudziwira, mtengo wamsika wa polyvinyl alcohol powder monga 2488 ndi 1788 nthawi zambiri umakhala wotsika kuposa wa cellulose ether, ndipo kusakaniza ufa wa polyvinyl alcohol powder kungachepetse mtengo wa cellulose ether.
Njira yodziwira: Mtundu uwu wa ether wa cellulose nthawi zambiri umakhala wokhuthala komanso wokhuthala. Umasungunuka mwachangu ndi madzi, sankhani yankho ndi ndodo yagalasi, padzakhala chinthu chodziwikiratu chomangirira.
Chidule: Chifukwa cha kapangidwe kake kapadera ndi magulu ake, kusunga madzi kwa cellulose ether sikungasinthidwe ndi zinthu zina. Kaya mtundu wanji wa filler utasakanizidwa, bola ngati utasakanizidwa kwambiri, kusunga madzi kudzachepa kwambiri. Kuchuluka kwa HPMC yokhala ndi kukhuthala kwabwinobwino kwa 10W mu matope wamba ndi 0.15 ~ 0.2 ‰, ndipo kuchuluka kwa madzi omwe amasunga ndi >88%. Kutuluka magazi ndi koopsa kwambiri. Chifukwa chake, kuchuluka kwa madzi omwe amasunga ndi chizindikiro chofunikira poyesa mtundu wa HPMC, kaya ndi wabwino kapena woipa, bola ngati wawonjezeredwa ku matope, zidzakhala zomveka bwino pang'onopang'ono.
Nthawi yotumizira: Meyi-10-2023