1. Kodi ma cellulose amagwiritsidwa ntchito bwanji?
Mtengo wa HPMCamagwiritsidwa ntchito kwambiri mu zomangamanga, zokutira, utomoni kupanga, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC akhoza kugawidwa mu kalasi mafakitale, chakudya kalasi ndi mankhwala kalasi malinga ndi ntchito.
2. Pali mitundu ingapo ya cellulose, ndipo pali kusiyana kotani pakugwiritsa ntchito kwawo?
HPMC akhoza kugawidwa mu mtundu pompopompo (mtundu dzina suffix "S") ndi otentha-kusungunuka mtundu. Mankhwala amtundu wanthawi yomweyo amamwazikana mwachangu m'madzi ozizira ndikulowa m'madzi. Panthawi imeneyi, madzi alibe mamasukidwe akayendedwe chifukwa HPMC okha omwazika m'madzi popanda kuvunda kwenikweni. Pafupifupi (kuyambitsa) kwa mphindi ziwiri, kukhuthala kwamadzimadzi kumawonjezeka pang'onopang'ono, ndikupanga mawonekedwe oyera a viscous colloid. Zogulitsa zotentha zotentha, zikakumana ndi madzi ozizira, zimatha kufalikira mofulumira m'madzi otentha ndikuzimiririka m'madzi otentha. Kutentha kumatsika mpaka kutentha kwina (malinga ndi kutentha kwa gel osakaniza), kukhuthala kumawonekera pang'onopang'ono mpaka kumapanga mawonekedwe a viscous colloid.
3. Kodi njira zosungunulira cellulose ndi ziti?
1). Zitsanzo zonse zikhoza kuwonjezeredwa kuzinthu mwa kusakaniza kowuma;
2). Pamene ayenera mwachindunji anawonjezera yachibadwa kutentha amadzimadzi njira, ndi bwino ntchito madzi ozizira kubalalitsidwa mtundu. Nthawi zambiri zimatenga mphindi 1-30 kuti zikhwime mutawonjezera (kuyambitsa ndi kusonkhezera)
3). Zitsanzo wamba zimayamba kugwedezeka ndi kumwazikana ndi madzi otentha, kenaka zimasungunuka m'madzi ozizira pambuyo poyambitsa ndi kuzizira;
4). Ngati agglomeration imachitika panthawi ya kusungunuka, ndichifukwa chakuti kugwedeza sikukwanira kapena chitsanzo wamba chimawonjezedwa mwachindunji kumadzi ozizira. Panthawi imeneyi, iyenera kugwedezeka mwamsanga. ndi
5). Ngati thovu limapangidwa panthawi ya kusungunuka, limatha kusiyidwa kuti liyime kwa maola 2-12 (nthawi yeniyeni imatsimikiziridwa ndi kusasinthika kwa yankho) kapena kuchotsedwa ndi vacuuming, pressurizing, etc. ndi
4. Momwe mungaweruzire mtundu wa cellulose mophweka komanso mwachilengedwe?
1) Kuyera, ngakhale kuyera sikungadziwe ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati zopangira zoyera zikuwonjezeredwa pakupanga, zimakhudza ubwino wake, koma zabwino zambiri zimakhala ndi zoyera zabwino.
2) Ubwino: Ubwino waMtengo wa HPMCnthawi zambiri imakhala ndi mauna 80 ndi mauna 100, mauna 120 amakhala ocheperako, kuwongolera kumakhala kwabwinoko.
3) Kutumiza kwa kuwala: Pambuyo pa HPMC kuyikidwa m'madzi kuti apange colloid yowonekera, yang'anani kuwala kwake. Kuchuluka kwa ma transmittance a kuwala, ndikwabwinoko, kusonyeza kuti mulibe ma insolubles ochepa mmenemo, ndipo ma transmittance of vertical reactors nthawi zambiri amakhala abwino. , The yopingasa riyakitala ndi zoipa, koma sizikutanthauza kuti khalidwe ofukula riyakitala ndi bwino kuposa ya yopingasa riyakitala, ndipo pali zinthu zambiri kudziwa khalidwe mankhwala.
4) Kukoka kwapadera: Kukula kwa mphamvu yokoka kwapadera, ndikolemera kwambiri. Kuchuluka kwa mphamvu yokoka, m'pamenenso hydroxypropyl ili muzinthuzo. Kukwera kwa hydroxypropyl kumapangitsa kuti madzi asungidwe bwino.
5. Kodi kuchuluka kwa cellulose mu putty powder ndi chiyani?
Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito pochita ntchito kumakhudzidwa ndi nyengo, kutentha, khalidwe la calcium phulusa la m'deralo, ndondomeko ya ufa wa putty ndi khalidwe lofunidwa ndi makasitomala. Pali kusiyana m'malo osiyanasiyana, nthawi zambiri, ndi pakati pa 4-5 kg.
6. Kodi kukhuthala koyenera kwa cellulose ndi kotani?
Nthawi zambiri, 100,000 putty ufa ndi wokwanira, ndipo zofunikira mumatope ndizokwera, ndipo zimafunika 150,000 kuti zikhale zosavuta kugwiritsa ntchito. Komanso, ntchito yofunika kwambiri ya HPMC ndi kusunga madzi, kenako thickening. Mu putty ufa, bola ngati kusungirako madzi kuli bwino komanso kukhuthala kuli kochepa (7-8), ndizothekanso. Zoonadi, kukwezeka kwa viscosity kumapangitsa kuti madzi azikhala bwino. Pamene mamasukidwe akayendedwe kuposa 100,000, mamasukidwe akayendedwe alibe mphamvu pa kusunga madzi. chachikulu.
7. Kodi zizindikiro zazikulu za cellulose ndi ziti?
Zomwe zili ndi hydroxypropyl
Zinthu za Methyl
mamasukidwe akayendedwe
Phulusa
Kutaya pakuyanika
8. Kodi zida zazikulu za cellulose ndi ziti?
Zida zazikulu za HPMC: thonje woyengedwa, methyl chloride, propylene oxide, madzi a caustic soda, etc.
9. Kodi ntchito yaikulu yogwiritsira ntchito cellulose mu putty powder ndi yotani? Kodi pali chemical reaction?
Pakati pa putty powder, imagwira ntchito zitatu za thickening, kusunga madzi ndi kumanga. Kukhuthala, cellulose imatha kukhuthala kuti iyime, kusungitsa yunifolomu ya yankho m'mwamba ndi pansi, ndikupewa kugwa. Kusungirako madzi: pangani ufa wa putty kuti uume pang'onopang'ono, ndipo thandizani phulusa la calcium kuti lizigwira ntchito pansi pa madzi. Zomangamanga: Ma cellulose amakhala ndi mafuta, omwe amatha kupanga ufa wa putty kukhala womanga bwino. HPMC satenga nawo gawo pazosintha zilizonse zamakina, koma imagwira ntchito yothandiza.
10. Cellulose ndi ether yosakhala ya ionic cellulose, ndiye kuti si-ionic ndi chiyani?
M'mawu a layman, zinthu za inert sizitenga nawo gawo pamachitidwe amankhwala.
CMC (carboxymethyl cellulose) ndi cellulose ya cationic, motero imasandulika kukhala mafuta a nyemba ikakumana ndi phulusa la calcium.
11 Kodi kutentha kwa gel wa cellulose kumagwirizana ndi chiyani?
Kutentha kwa gel osakaniza a HPMC kumagwirizana ndi zomwe zili mu methoxy, kutsika kwa methoxy, kumapangitsa kutentha kwa gel.
12. Kodi pali mgwirizano uliwonse pakati pa ufa wa putty powder ndi cellulose?
Pali maubale! ! ! Ndiko kuti, kusungidwa kwa madzi kosauka kwa HPMC kumayambitsa kutayika kwa ufa (zomwe zili muzinthu monga phulusa, calcium yolemera, ndi simenti, kutentha kwa zomangamanga, ndi khoma lonse lidzakhudzidwa).
13. Kodi pali kusiyana kotani pakati pa madzi ozizira nthawi yomweyo ndi cellulose yosungunuka yotentha popanga?
Madzi ozizira amtundu wa HPMC amathiridwa pamwamba ndi glyoxal, ndipo amabalalika m'madzi ozizira, koma samasungunuka kwenikweni. Imasungunuka kokha pamene mamasukidwe akayendedwe akuwonjezeka. Mitundu yotentha yosungunula sichimathandizidwa ndi glyoxal. Ngati kuchuluka kwa glyoxal kuli kwakukulu, kubalalitsidwa kudzakhala kofulumira, koma kukhuthala kumawonjezeka pang'onopang'ono, ndipo ngati kuchuluka kwake kuli kochepa, zosiyana zidzakhala zoona.
14. N’chifukwa chiyani cellulose amanunkha?
HPMC yopangidwa ndi njira yosungunulira imagwiritsa ntchito toluene ndi isopropanol ngati zosungunulira. Ngati kusamba sikuli bwino, padzakhala fungo lotsalira. (Neutralization recovery is the key process of fungo)
15. Momwe mungasankhire mapadi oyenera pazolinga zosiyanasiyana?
Ufa wa Putty: umafunika kusungirako madzi ambiri, kumasuka kwa zomangamanga
Mtondo wamba wopangidwa ndi simenti: umafunika kusunga madzi ambiri, kukana kutentha kwambiri, komanso kukhuthala pompopompo
Kugwiritsa ntchito guluu womanga: zinthu pompopompo zokhala ndi kukhuthala kwakukulu. (kalasi yoyenera
Mtondo wa Gypsum: kusungirako madzi ambiri, kukhuthala kwapakati ndi otsika, kukhathamiritsa kwakanthawi kochepa
16. Kodi dzina lina la cellulose ndi liti?
Amatchedwa HPMC kapena MHPC alias hypromellose, cellulose hydroxypropyl methyl ether.
17. Kuyika kwa cellulose mu putty powder, chifukwa chiyani mavuvu mu putty powder?
Mu putty powder, HPMC imagwira ntchito zitatu zokulitsa, kusunga madzi ndi kumanga. Zifukwa za bubbles ndi:
1. Madzi ochuluka amawonjezeredwa.
2. Chosanjikiza chapansi sichimauma, ingochotsani china pamwamba, ndipo ndichosavuta kutulutsa thovu.
18. Kodi pali kusiyana kotani pakati pa cellulose ndi MC:
MC ndi methyl cellulose, yomwe imapangidwa ndi cellulose ether pochiza thonje woyengedwa ndi alkali, kugwiritsa ntchito methane chloride ngati etherification agent, ndikuchita zingapo zingapo. Nthawi zambiri, mlingo woloweza m'malo ndi 1.6-2.0, ndipo kusungunuka kwake kumasiyana mosiyanasiyana. Mosiyana, ndi ya non-ionic cellulose ether.
(1) Kusungidwa kwa madzi kwa methylcellulose kumadalira kuchuluka kwake, kukhuthala, kukongola kwa tinthu ndi kusungunuka kwake. Nthawi zambiri, ngati kuchuluka kwake kuli kwakukulu, fineness ndi yaying'ono, ndipo mamasukidwe ake ndiakuluakulu, kuchuluka kwa kusunga madzi kumakhala kwakukulu. Pakati pawo, kuchuluka kwake kumakhudza kwambiri kuchuluka kwa madzi osungira anthu. Kukhuthala kwake sikufanana ndi kuchuluka kwa kusungirako madzi. Mlingo wa kusungunuka makamaka zimadalira pamwamba pa mapadi particles. Digiri ya kusinthidwa ndi particle fineness. Pakati pa ma ether angapo omwe ali pamwambawa, kuchuluka kwa madzi a methyl cellulose ndi Jinshuiqiao cellulose ndikwambiri.
(2) Methylcellulose imasungunuka m'madzi ozizira, ndipo zimakhala zovuta kusungunuka m'madzi otentha. Yankho lake lamadzi ndi lokhazikika pamlingo wa ph = 3-12. Iwo ali ngakhale wabwino ndi wowuma, etc. ndi surfactants ambiri. Kutentha Pamene kutentha kwa gelation kufika, gelation idzachitika.
(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa madzi osungira madzi a methyl cellulose. Nthawi zambiri, kutentha kukakhala kokwera, madzi amasunga kwambiri. Ngati kutentha kwa matope kupitirira madigiri 40, kusungidwa kwa madzi kwa methyl cellulose kudzachepetsedwa kwambiri, zomwe zidzakhudza kwambiri kumanga matope.
(4)Methyl celluloseimakhudza kwambiri kupanga ndi kumamatira kwamatope. Kumamatira apa kumatanthauza mphamvu yomatira yomwe imamveka pakati pa chida cha wogwiritsa ntchito ndi gawo lapansi la khoma, ndiko kuti, kukana kukameta ubweya wa matope. Kumamatira kumakhala kwakukulu, kukana kukameta ubweya wa matope ndi kwakukulu, ndipo mphamvu zomwe ogwira ntchito amafunikira pakugwiritsa ntchito zimakhala zazikulu, ndipo ntchito yomanga matope ndi yosauka.
Nthawi yotumiza: Apr-25-2024