1. Kodi ntchito yaikulu ya hydroxypropyl methylcellulose ndi yotani?
HPMC imagwiritsidwa ntchito kwambiri pa zipangizo zomangira, zokutira, utomoni wopangidwa, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC ikhoza kugawidwa m'magulu a mafakitale, chakudya ndi mankhwala malinga ndi momwe imagwiritsidwira ntchito.
2. Pali mitundu ingapo ya hydroxypropyl methylcellulose. Kodi kusiyana kwake ndi kotani?
HPMC ingagawidwe m'magulu awiri: mtundu wa instant (brand suffix "S") ndi mtundu wa hot-soluble. Zinthu za instant type zimafalikira mofulumira m'madzi ozizira ndipo zimasowa m'madzi. Panthawiyi, madziwo alibe kukhuthala chifukwa HPMC imangofalikira m'madzi ndipo ilibe yankho lenileni. Pambuyo pa mphindi ziwiri (kusakaniza), kukhuthala kwa madziwo kumawonjezeka pang'onopang'ono ndipo colloid yowonekera bwino imapangidwa. Zinthu zosungunuka m'madzi ozizira, m'madzi ozizira, zimatha kufalikira mwachangu m'madzi otentha ndikusowa m'madzi otentha. Kutentha kukatsika kufika pa kutentha kwina (malinga ndi kutentha kwa gel kwa chinthucho), kukhuthala kumawonekera pang'onopang'ono mpaka colloid yowonekera bwino komanso yowoneka bwino ipangidwe.
3. Kodi njira zothetsera vuto la hydroxypropyl methylcellulose ndi ziti?
1. Mitundu yonse ikhoza kuwonjezeredwa ku zinthuzo mwa kusakaniza mouma;
2. Iyenera kuwonjezeredwa mwachindunji ku madzi otentha bwino. Ndi bwino kugwiritsa ntchito mtundu wa kufalikira kwa madzi ozizira. Pambuyo powonjezera, nthawi zambiri imakula mkati mwa mphindi 10-90 (kusakaniza, kusakaniza, kusakaniza)
3. Pa zitsanzo wamba, sakanizani ndi kufalitsa ndi madzi otentha kaye, kenako onjezerani madzi ozizira kuti asungunuke mukasakaniza ndi kuziziritsa.
4. Ngati kusonkhana kapena kukulunga kumachitika panthawi yosungunuka, ndi chifukwa chakuti kusakaniza sikukwanira kapena chitsanzo chachizolowezi chimawonjezeredwa mwachindunji m'madzi ozizira. Pakadali pano, sakanizani mwachangu.
5. Ngati thovu lipangidwa panthawi yosungunuka, likhoza kusiyidwa kwa maola 2-12 (nthawi yeniyeniyo imadalira kukhazikika kwa yankho) kapena kuchotsedwa ndi vacuum, pressurization, ndi zina zotero, ndipo kuchuluka koyenera kwa mankhwala ochotsera poizoni kungawonjezedwenso.
4. Kodi mungaweruze bwanji ubwino wa hydroxypropyl methylcellulose mosavuta komanso mwachilengedwe?
1. Kuyera. Ngakhale kuti kuyera sikungaweruze ngati HPMC ndi yabwino kapena ayi, ndipo kuwonjezera zinthu zoyera panthawi yopanga kudzakhudza ubwino wake, zinthu zambiri zabwino zimakhala ndi kuyera kwabwino.
2. Kusalala: Kusalala kwa HPMC nthawi zambiri kumakhala ndi maukonde 80 ndi maukonde 100, pansi pa 120, ndipo kusalala kumakhala bwino.
3. Kutumiza kuwala: HPMC imapanga colloid yowonekera bwino m'madzi. Yang'anani kutumizira kuwala. Kutumiza kuwala kukakhala kwakukulu, kumalola kuti kulowetsedwa bwino, zomwe zikutanthauza kuti mulibe zinthu zambiri zosasungunuka. Choyatsira choyima nthawi zambiri chimakhala chabwino, ndipo choyatsira choyima chimatulutsa zina. Koma sitinganene kuti mtundu wa ma kettle oyima ndi wabwino kuposa wa ma kettle opingasa. Pali zinthu zambiri zomwe zimapangitsa kuti zinthu zikhale bwino.
4. Mphamvu yokoka: Mphamvu yokoka ikakula, kulemera kwake kumakhala bwino. Mphamvu yokoka ikakula, kuchuluka kwa hydroxypropyl kumakhala kwakukulu. Kawirikawiri, kuchuluka kwa hydroxypropyl m'thupi kumachuluka, ndipo madzi amasungidwa bwino.
5. Kodi ufa wa putty umagwiritsidwa ntchito ndi hydroxypropyl methylcellulose wochuluka bwanji?
Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito kumasiyana malinga ndi malo, nthawi zambiri kumakhala pakati pa 4-5 kg, kutengera nyengo, kutentha, mtundu wa phulusa la calcium, fomula ya ufa wa putty, ndi zomwe makasitomala amafuna.
6. Kodi kukhuthala kwa hydroxypropyl methylcellulose ndi kotani?
Ufa wa putty nthawi zambiri umawononga RMB 100,000, pomwe matope ali ndi zofunikira zapamwamba. Umawononga RMB 150,000 kuti ukhale wosavuta kugwiritsa ntchito. Komanso, ntchito yofunika kwambiri ya HPMC ndikusunga madzi, kutsatiridwa ndi kukhuthala. Mu ufa wa putty, bola ngati madzi akusungidwa bwino ndipo kukhuthala kuli kochepa (7-8), n'zothekanso. Zachidziwikire, kukhuthala kwakukulu, kukhuthala kumakhala bwino. Kukhuthala kukakhala pamwamba pa 100,000, kukhuthala sikukhudza kwambiri kusungunuka kwa madzi.
7. Kodi zizindikiro zazikulu zaukadaulo za hydroxypropyl methylcellulose ndi ziti?
Kuchuluka kwa hydroxypropyl
Kuchuluka kwa Methyl
kukhuthala
Phulusa
kuchepetsa thupi kouma
8. Kodi zinthu zazikulu zopangira hydroxypropyl methylcellulose ndi ziti?
Zipangizo zazikulu zopangira HPMC: thonje loyengedwa, methyl chloride, propylene oxide, zipangizo zina zopangira, caustic soda, ndi acid toluene.
9. Kodi ntchito yaikulu ya hydroxypropyl methylcellulose mu ufa wa putty ndi yotani?
Mu ufa wa putty, umagwira ntchito zitatu zazikulu: kukhuthala, kusunga madzi ndi kumanga. Kukhuthala kumatha kukhuthala cellulose ndikuchita gawo loyimitsa, kusunga yankholo kukhala lofanana mmwamba ndi pansi ndikuletsa kugwedezeka. Kusunga madzi: Kupangitsa ufa wa putty kuumitsa pang'onopang'ono ndikuthandiza calcium imvi kuchitapo kanthu pansi pa madzi. Kugwira ntchito: Cellulose imakhala ndi mphamvu yopaka mafuta, zomwe zimapangitsa ufa wa putty kugwira ntchito bwino. HPMC sichita nawo machitidwe aliwonse a mankhwala ndipo imangogwira ntchito yothandizira.
10. Hydroxypropyl methylcellulose ndi ether ya cellulose yosakhala ionic, ndiye mtundu wanji wa non-ionic?
Kawirikawiri, zinthu zopanda mphamvu sizimagwira nawo ntchito ya mankhwala.
CMC (carboxymethylcellulose) ndi cellulose ya cationic ndipo imasanduka tofu dregs ikakumana ndi calcium ash.
11. Kodi kutentha kwa gel kwa hydroxypropyl methylcellulose kumakhudzana bwanji ndi?
Kutentha kwa gel ya HPMC kumagwirizana ndi kuchuluka kwa methoxyl komwe kuli mu methoxyl. Kuchuluka kwa methoxyl komwe kuli mu methoxyl, kutentha kwa gel kumakhala kwakukulu.
12. Kodi pali ubale uliwonse pakati pa ufa wa putty ndi hydroxypropyl methylcellulose?
Izi ndizofunikira! HPMC ili ndi madzi ochepa ndipo imayambitsa ufa.
13. Kodi kusiyana kotani pakati pa njira yopangira madzi ozizira ndi madzi otentha a hydroxypropyl methylcellulose?
Mtundu wosungunuka m'madzi ozizira wa HPMC umafalikira mwachangu m'madzi ozizira pambuyo pochiritsidwa pamwamba ndi glyoxal, koma kwenikweni susungunuka. Kukhuthala kumakwera, ndiko kuti, kumasungunuka. Mtundu wosungunuka wotentha suchiritsidwa pamwamba ndi glyoxal. Glyoxal ndi yayikulu kukula kwake ndipo imafalikira mwachangu, koma imakhala ndi kukhuthala pang'onopang'ono komanso voliyumu yaying'ono, komanso mosemphanitsa.
14. Kodi fungo la hydroxypropyl methylcellulose ndi lotani?
HPMC yopangidwa pogwiritsa ntchito njira yosungunulira imapangidwa ndi toluene ndi isopropyl alcohol ngati zosungunulira. Ngati sizitsukidwa bwino, padzakhala fungo lotsalira. (Kuchotsa ndi kubwezeretsanso ndi njira yofunika kwambiri yopangira fungo)
15. Kodi mungasankhe bwanji hydroxypropyl methylcellulose yoyenera kugwiritsidwa ntchito mosiyanasiyana?
Ufa wa putty: umafunika kusunga madzi ambiri komanso kusavuta kumanga (mtundu woyenera: 7010N)
Simenti yamba yochokera ku simenti: kusunga madzi ambiri, kukana kutentha kwambiri, kukhuthala nthawi yomweyo (kalasi yoyenera: HPK100M)
Kugwiritsa ntchito guluu womangira: chinthu chopangidwa mwachangu, kukhuthala kwakukulu. (Mtundu wovomerezeka: HPK200MS)
Dothi la gypsum: kusunga madzi ambiri, kukhuthala kwapakati-kotsika, kukhuthala kwa nthawi yomweyo (kalasi yovomerezeka: HPK600M)
16. Kodi dzina lina la hydroxypropyl methylcellulose ndi liti?
HPMC kapena MHPC imadziwikanso kuti hydroxypropyl methylcellulose ndi hydroxypropyl methylcellulose ether.
17. Kugwiritsa ntchito hydroxypropyl methylcellulose mu ufa wa putty. N’chiyani chimapangitsa ufa wa putty kukhala thovu?
HPMC imagwira ntchito zitatu zazikulu mu ufa wa putty: kukhuthala, kusunga madzi ndi kupanga. Zifukwa za thovu ndi izi:
1. Onjezani madzi ambiri.
2. Ngati pansi sipauma, kukanda gawo lina pamwamba kungayambitse matuza mosavuta.
18. Kodi kusiyana pakati pa hydroxypropyl methylcellulose ndi MC ndi kotani:
MC, methyl cellulose, imapangidwa kuchokera ku thonje loyengedwa bwino pambuyo pokonza alkali, pogwiritsa ntchito methane chloride ngati chinthu chotenthetsera, komanso machitidwe osiyanasiyana kuti apange cellulose ether. Mlingo wosinthira ndi 1.6-2.0, ndipo kusungunuka kwa madigiri osiyanasiyana osinthira ndi kosiyana. Ndi ether ya cellulose yosakhala ionic.
(1) Kusunga madzi kwa methylcellulose kumadalira kuchuluka kwake kowonjezera, kukhuthala, kusalala kwa tinthu tating'onoting'ono ndi kuchuluka kwa kusungunuka. Kawirikawiri, kuchuluka kwa kuwonjezerako ndi kwakukulu, kusalalako ndi kochepa, kukhuthala ndi kwakukulu, ndipo kuchuluka kwa kusungunuka kwa madzi ndi kwakukulu. Kuchuluka kwa kuwonjezerako kumakhudza kwambiri kuchuluka kwa kusungunuka kwa madzi, ndipo kukhuthala sikukhudzana ndi kuchuluka kwa kusungunuka kwa madzi. Kuchuluka kwa kusungunuka kumadalira makamaka pa mlingo wa kusintha kwa pamwamba ndi kusalala kwa tinthu tating'onoting'ono ta tinthu ta cellulose. Pakati pa ma ether a cellulose omwe ali pamwambapa, methylcellulose ndi hydroxypropylmethylcellulose ali ndi kuchuluka kwa kusungunuka kwa madzi.
(2) Methyl cellulose imatha kusungunuka m'madzi ozizira, koma imakumana ndi zovuta kusungunuka m'madzi otentha. Madzi ake amadzi ndi okhazikika kwambiri pa pH = 3-12, ndipo amagwirizana bwino ndi starch ndi ma surfactants ambiri. Kutentha kukafika pa gel. Kutentha kwa gelation kukakwera, gelation imachitika.
(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa madzi omwe methylcellulose imasunga. Nthawi zambiri, kutentha kukakhala kwakukulu, kuchuluka kwa madzi omwe amasunga kumakhala koipa kwambiri. Ngati kutentha kwa matope kupitirira madigiri 40, kuchuluka kwa madzi omwe methylcellulose imasunga kudzachepa kwambiri, zomwe zidzakhudza kwambiri kapangidwe ka matope.
(4) Methylcellulose imakhudza kwambiri kapangidwe ndi kumatirira kwa matope. Kumatirira kumeneku kumatanthauza kumatirira komwe kumamveka pakati pa chida chogwiritsira ntchito cha wogwira ntchito ndi zinthu zoyambira pakhoma, ndiko kuti, kukana kukakamira kwa matope. Kumatirira kwake ndi kwakukulu, kukana kukakamira kwa matope ndi kwakukulu, ndipo mphamvu yomwe ogwira ntchito amafunikira panthawi yogwiritsa ntchito ndi yayikulu, kotero magwiridwe antchito a matope ndi otsika.
Nthawi yotumizira: Januwale-31-2024