1. Kodi ntchito yaikulu ya hydroxypropyl methyl cellulose ndi yotani?
HPMCimagwiritsidwa ntchito kwambiri pa zipangizo zomangira, zokutira, ma resin opangidwa, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC ikhoza kugawidwa m'magulu a mafakitale, magulu a chakudya ndi magulu azachipatala malinga ndi kagwiritsidwe ntchito.
2. Hydroxypropyl methyl cellulose imagawidwa m'mitundu ingapo, kodi kusiyana kwake ndi kotani?
HPMC ingagawidwe m'magulu awiri (instant suffix "S") ndi otentha osungunuka, zinthu zomwe zimasungunuka nthawi yomweyo, m'madzi ozizira zimafalikira mwachangu, zimasowa m'madzi, panthawiyi madziwo alibe kukhuthala, chifukwa HPMC imangofalikira m'madzi, palibe kusungunuka kwenikweni. Pafupifupi mphindi ziwiri, kukhuthala kwa madziwo kumawonjezeka pang'onopang'ono, ndikupanga gel yoyera komanso yomata. Zinthu zosungunuka kutentha, zomangiriridwa m'madzi ozizira, zimatha kufalikira mwachangu m'madzi otentha, kuzimiririka m'madzi otentha, monga kutentha kumatsika kufika kutentha kwina (malinga ndi kutentha kwa gel kwa chinthucho), kukhuthala kumawonekera pang'onopang'ono, mpaka kupanga colloid yowonekera bwino.
3. Kodi mungadziwe bwanji mtundu wa hydroxypropyl methyl cellulose mosavuta komanso mwachilengedwe?
1) kuyera, ngakhale kuti kuyera sikungathe kudziwa ngati HPMC ndi yabwino, ndipo ngati iwonjezeredwa mu njira yopangira, kuyera kudzakhudza ubwino wake, koma, zinthu zabwino makamaka kuyera ndi kwabwino.
2) kupyapyala: Kupyapyala kwa HPMC nthawi zambiri kumakhala ndi maukonde 80 ndi maukonde 100, cholinga chake ndi chochepa ndi 120, ndipo kupyapyala kumakhala bwino.
3) Kutumiza kuwala: HPMC m'madzi, kupanga colloid yowonekera, kuwona kutumizira kwake kuwala, kukulirapo kwa chinthu chabwino, kufotokoza kuti sichisungunuka mkati, ketulo yoyimirira yochitapo kanthu ndi madigiri ambiri ndi yabwino, idzatumiza ketulo yoyimirira yochitapo kanthu, koma singathe kufotokoza kuti khalidwe la kupanga ketulo yoyimirira ndi labwino kuposa bodza kupanga ketulo, pali zinthu zambiri zomwe zimatsimikiza khalidwe la chinthucho.
4) chiŵerengero: chiŵerengerocho chikakhala chachikulu, cholemera kwambiri chimakhala chabwino kuposa chachikulu, makamaka chifukwa cha kuchuluka kwa hydroxypropyl mkati, kuchuluka kwa hydroxypropyl kumakhala kwakukulu, kusunga madzi kumakhala bwino.
4. Kodi njira zosungunula za hydroxypropyl methyl cellulose ndi ziti?
1) Mitundu yonse ikhoza kuwonjezeredwa mu zinthuzo pogwiritsa ntchito njira yosakaniza youma;
2) Iyenera kuwonjezeredwa mwachindunji ku madzi otentha bwino, ndi bwino kugwiritsa ntchito madzi ozizira osakaniza, mutatha kuwonjezera nthawi zambiri mu mphindi 10-90 kuti mukhuthale (sakanizani sakanizani)
3) Ma model wamba amatha kusungunuka atasakaniza ndi kusakaniza ndi madzi otentha ndikuwonjezera madzi ozizira atasakaniza ndi kuziziritsa;
4) Mukasungunuka, ngati vuto la kusonkhana kwa madzi litachitika, ndi chifukwa chakuti kusakaniza sikukwanira kapena chitsanzo chachizolowezi chimawonjezedwa mwachindunji m'madzi ozizira. Panthawiyi, chiyenera kusunthidwa mwachangu.
5) Ngati thovu limapezeka panthawi yosungunuka, likhoza kuchotsedwa poyima kwa maola 2-12 (nthawi yeniyeniyo imadalira kukhazikika kwa yankho) kapena potulutsa vacuum ndi kupondereza, kapena powonjezera kuchuluka koyenera kwa mankhwala ochotsera poizoni.
5 hydroxypropyl methyl cellulose mu kuchuluka kwa ufa wa putty?
HPMC imagwiritsa ntchito kuchuluka kwenikweni kwa zinthu, malinga ndi nyengo, kutentha, mtundu wa calcium wa imvi, ufa wa putty ndi zofunikira za makasitomala za mtundu wosiyana, ndipo pali kusiyana pakati pa makilogalamu 4-5.
6. Kodi kukhuthala koyenera kwa hydroxypropyl methyl cellulose ndi kotani?
Ufa wa putty nthawi zambiri umakhala ndi chitini cha 100000, zofunikira za matope zimakhala zapamwamba, mpaka 150000 zabwino, ndipo HPMC ndi yofunika kwambiri ndi kusunga madzi, kutsatiridwa ndi kukhuthala. Mu ufa wa putty, bola ngati kusunga madzi kuli bwino, kukhuthala kuli kochepa (7-8), n'zothekanso, ndithudi, kukhuthala kumakhala kwakukulu, kusunga madzi kumakhala bwino, pamene kukhuthala kuli koposa 100,000, kukhuthala kwa kusunga madzi sikokwanira.
7. Kodi zinthu zazikulu zopangira hydroxypropyl methyl cellulose ndi ziti?
HPMCZipangizo zazikulu zopangira: thonje loyengedwa, chloromethane, propylene oxide, zipangizo zina zopangira, mapiritsi a alkali, acid toluene.
8. Hydroxypropyl methyl cellulose mu ntchito ya putty powder, udindo waukulu, kaya mankhwala?
Mu ufa wa putty, kukhuthala, kusunga madzi ndi kupanga ntchito zitatu. Kukhuthala, cellulose imatha kupindika mpaka kuyimitsidwa, kotero kuti yankho limakhalabe lofanana mmwamba ndi pansi monga ntchito yoletsa kuyenda kwa madzi. Kusunga madzi: kumapangitsa ufa wa putty kuumitsa pang'onopang'ono, calcium yothandiza yothandiza pakuyankha kwa madzi. Kapangidwe: mafuta a cellulose, amatha kupanga ufa wa putty kukhala ndi kapangidwe kabwino. HPMC sichita nawo machitidwe aliwonse a mankhwala, koma imangogwira ntchito yothandizira.
9 .hydroxypropyl methyl cellulose ndi ether ya cellulose yosakhala ionic, ndiye kodi si ionic ndi chiyani?
Mwachidule, zinthu zopanda mphamvu sizigwira ntchito mu zochita za mankhwala.
CMC (carboxymethyl cellulose) ndi cationic cellulose, kotero kukumana ndi calcium imvi kudzakhala zotsalira za nyemba.
10. Kodi zizindikiro zazikulu zaukadaulo za hydroxypropyl methyl cellulose ndi ziti?
Kuchuluka kwa hydroxypropyl
Kuchuluka kwa Methyl
kukhuthala
phulusa
Kuchepetsa thupi kouma
11. Kodi kutentha kwa gel kwa hydroxypropyl methyl cellulose kumakhudzana ndi chiyani?
Kutentha kwa gel kwa HPMC kumagwirizana ndi kuchuluka kwa methoxyl, kuchuluka kwa methoxyl komwe kumakhala kochepa, kutentha kwa gel kumakhala kwakukulu.
Kodi ufa wa putty 12 ndi ubale wa hydroxypropyl methyl cellulose?
Ngati HPMC ilibe madzi okwanira, imayambitsa ufa.
13 hydroxypropyl methyl cellulose mu kugwiritsa ntchito ufa wa putty, putty powder bubble chifukwa chiyani?
HPMC mu ufa wa putty, kukhuthala, kusunga madzi ndi kapangidwe ka ntchito zitatu, chifukwa cha thovu:
1. ) Madzi ochulukirapo amawonjezedwa.
2. ) Gawo la pansi silili louma, kenako pukutani gawolo, lomwe limakhala losavuta kutulutsa matuza.
14. Kodi kusiyana pakati pa hydroxypropyl methyl cellulose yosungunuka mwachangu ndi yosungunuka kwambiri ya hydroxypropyl methyl cellulose pakupanga ndi kotani?
Mtundu wa yankho la madzi ozizira a HPMC nthawi yomweyo ndi pambuyo pokonza pamwamba pa glyoxal, kuyikidwa m'madzi ozizira kufalikira mwachangu, koma osasungunuka kwenikweni, kukhuthala kumakwera, kumasungunuka. Mtundu wosungunuka m'madzi sunakonzedwe pamwamba ndi glyoxal. Kuchuluka kwa glyoxal ndi kwakukulu, kufalikira kwake ndi kwachangu, koma kukhuthala kwake ndi pang'onopang'ono, kuchuluka kwake ndi kochepa, m'malo mwake.
15. Kodi fungo la hydroxypropyl methyl cellulose limakhudza chiyani?
HPMC yopangidwa ndi njira yosungunulira imapangidwa ndi toluene ndi isopropyl alcohol. Ngati kutsuka sikuli bwino, padzakhala kukoma kotsalira. (Kubwezeretsa fungo loipa ndiye njira yofunika kwambiri yopangira fungo)
16. Kodi mungasankhe bwanji hydroxypropyl methyl cellulose yoyenera kugwiritsidwa ntchito mosiyanasiyana?
Ufa wa putty: zofunikira kwambiri zosungira madzi, zogwirizana bwino ndi kapangidwe kake (kalasi yoyenera: 75AX100000)
Simenti yamba yopangidwa ndi simenti: kusunga madzi ambiri, kukana kutentha kwambiri, kukhuthala nthawi yomweyo (kalasi yoyenera: 75AX150000)
Kugwiritsa ntchito guluu womangira: zinthu zongochitika nthawi yomweyo, kukhuthala kwakukulu. (Nambala ya mtundu wovomerezeka: 75AX200000S)
Dothi la gypsum: losunga madzi ambiri, kukhuthala kwapakati ndi kochepa, kukhuthala kwachangu (kalasi yovomerezeka: 75AX75000)
17. Kodi dzina loti hydroxypropyl methyl cellulose ndi chiyani?
HPMC kapena MHPC yotchedwa hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
18. Kodi kusiyana pakati pa hydroxypropyl methyl cellulose ndi chiyani?MC?
MC ndi methyl cellulose, ndi thonje loyengedwa pambuyo pa mankhwala a alkali, methane chloride ngati wothandizira etherifying, kudzera mu mndandanda wa zochita ndipo amapangidwa ndi cellulose ether, digiri yonse ya m'malo ndi 1.6-2.0, digiri yosiyana ya kusungunuka m'malo ndi yosiyana, ndi ya non-ionic cellulose ether.
(1) Kusunga madzi kwa methyl cellulose kumadalira kuchuluka kwake kowonjezera, kukhuthala, kusalala kwa tinthu tating'onoting'ono ndi kuchuluka kwa kusungunuka. Kawirikawiri, kuchuluka kwa kuwonjezera kumakhala kwakukulu, kusalala kumakhala kochepa, kukhuthala kumakhala kwakukulu, kuchuluka kwa kusungunuka kwa madzi kumakhala kwakukulu, kuchuluka kwa kuwonjezera kumakhudza kwambiri kuchuluka kwa kusungunuka kwa madzi, kukhuthala ndi kuchuluka kwa kusungunuka kwa madzi sikutsika kuposa ubale, kuchuluka kwa kusungunuka kumadalira makamaka pa digiri yosinthira pamwamba ndi kusalala kwa tinthu tating'onoting'ono ta tinthu ta cellulose. Methyl cellulose ndi hydroxypropyl methyl cellulose mu ma ether angapo a cellulose omwe ali pamwambapa ali ndi kuchuluka kwa kusungunuka kwa madzi.
(2) Methyl cellulose imatha kusungunuka m'madzi ozizira, madzi otentha adzakhala ovuta kusungunuka, yankho lake lamadzimadzi mu pH = 3-12 ndi lokhazikika kwambiri, ndipo wowuma, ndi zina zotero, ndipo ma surfactants ambiri amakhala ndi mgwirizano wabwino, kutentha kukafika kutentha kwa gelation, padzakhala gelation phenomenon.
(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa madzi omwe amasungidwa mu methyl cellulose, nthawi zambiri, kutentha kukakhala kwakukulu, kumakhala koipa kwambiri. Ngati kutentha kwa matope kupitirira madigiri 40, methyl cellulose yomwe imasungidwa mumadzi idzakhala yoipa kwambiri, zomwe zimakhudza kwambiri kapangidwe ka matope.
(4)Methyl celluloseZimakhudza kwambiri kapangidwe ndi kumatirira kwa matope. Kumatirira kumeneku kumatanthauza mphamvu yomatirira yomwe imamveka pakati pa chida ndi khoma la matope, ndiko kuti, kukana kukakamira kwa matope. Kumatirira ndi kwakukulu, kukana kukakamira kwa matope ndi kwakukulu, mphamvu yomwe ogwira ntchito amafunikira pakugwiritsa ntchito ndi yayikulu, ndipo kapangidwe ka matope ndi koipa.
Nthawi yotumizira: Epulo-25-2024