1. Kodi cholinga chachikulu cha hydroxypropyl methyl cellulose (HPMC) ndi chiyani?
HPMC chimagwiritsidwa ntchito zomangamanga, zokutira, utomoni kupanga, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena.
HPMC akhoza kugawidwa mu kalasi yomanga, kalasi chakudya ndi kalasi zachipatala malinga ndi cholinga chake.
Pakali pano, zinthu zambiri zapakhomo ndi za kalasi yomanga. Pomanga kalasi, ufa wa putty umagwiritsidwa ntchito mochuluka, pafupifupi 90% umagwiritsidwa ntchito ngati putty ufa, ndipo enawo amagwiritsidwa ntchito ngati matope a simenti ndi guluu.
2. Pali mitundu ingapo ya hydroxypropyl methyl cellulose (HPMC). Kodi pali kusiyana kotani pakati pa ntchito zawo?
HPMC akhoza kugawidwa mu mtundu yomweyo ndi otentha Sungunulani mtundu.
Nthawi yomweyo mankhwala amabalalitsa mofulumira m'madzi ozizira ndipo amatha m'madzi. Panthawi imeneyi, madzi alibe mamasukidwe akayendedwe, chifukwa HPMC kokha omwazika m'madzi ndipo si kwenikweni kupasuka. Pafupifupi 2 mphindi, mamasukidwe akayendedwe a madzi pang'onopang'ono kuchuluka, kupanga mandala viscous colloid.
Mtundu wa Instant, mitundu yambiri yogwiritsira ntchito, ingagwiritsidwe ntchito mu putty powder ndi matope, komanso mu guluu wamadzimadzi ndi utoto.
Mankhwala osungunuka otentha, akakumana ndi madzi ozizira, amatha kufalikira mofulumira m'madzi otentha ndikutha m'madzi otentha. Kutentha kumatsika mpaka kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka mawonekedwe a viscous colloid apangidwa.
Mtundu wosungunuka wotentha ukhoza kugwiritsidwa ntchito mu putty ufa ndi matope.
3. Kodi njira zosungunulira za hydroxypropyl methyl cellulose (HPMC) ndi ziti?
Njira yosungunula madzi otentha: Popeza HPMC simasungunuka m'madzi otentha, HPMC imatha kumwazikana m'madzi otentha pagawo loyambirira, kenako ndikusungunuka ikakhazikika. Njira ziwiri zodziwika bwino zimafotokozedwa motere:
(1) Ikani madzi otentha ofunikira m’chidebe ndi kutenthetsa pafupifupi 70°C. Pang'onopang'ono onjezani hydroxypropyl methylcellulose ndikuyambitsa pang'onopang'ono, yambani HPMC kuyandama pamwamba pa madzi, kenako pang'onopang'ono pangani slurry, ndikuziziritsa slurry ndikugwedeza.
(2). Onjezerani 1/3 kapena 2/3 ya madzi ofunikira mumtsuko ndikutenthetsa mpaka 70 ° C. Malinga ndi pamwamba njira, kumwazikana HPMC kukonzekera madzi otentha slurry; kenaka yikani madzi ozizira otsalawo ku slurry yamadzi otentha. Mu slurry, kuziziritsa osakaniza pambuyo oyambitsa.
Njira yosakaniza ufa: Sakanizani ufa wa HPMC ndi zosakaniza zina zambiri za ufa ndi chosakaniza, ndiyeno onjezerani madzi kuti musungunuke, ndiye HPMC ikhoza kusungunuka panthawiyi popanda kugwedezeka, chifukwa ngodya iliyonse yaying'ono, pali pang'ono chabe ya HPMC. Ufawo udzasungunuka nthawi yomweyo ukakumana ndi madzi.
4. Kodi mungaweruze bwanji ubwino wa hydroxypropyl methylcellulose (HPMC) mophweka komanso mwachidziwitso?
(1) Kuyera: Ngakhale kuyera sikungadziwe ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati chowunikira chikuwonjezeredwa pakupanga, chidzakhudza ubwino wake. Komabe, zinthu zambiri zabwino zimakhala ndi zoyera zabwino.
(2) Fineness: Ubwino wa HPMC nthawi zambiri umakhala 80 mauna ndi 100 mauna, 120 mauna ndi ocheperako, kuwongolera bwino, nthawi zambiri kumakhala bwino.
(3) Transmittance: Pambuyo poyika HPMC m'madzi kuti ipange colloid yowonekera, yang'anani momwe imafalikira. Kuchuluka kwa transmittance, kumakhala bwino, kusonyeza kuti mkati mwake muli ma insolubles ochepa.
(4) Chigawo: kukula kwa gawo, kulemera kumakhala bwinoko. Kukhazikika kwapamwamba nthawi zambiri kumakhala chifukwa cha kuchuluka kwa hydroxypropyl momwemo, ndipo kuchuluka kwa hydroxypropyl, kumapangitsa kuti madzi asungidwe bwino.
5. Kodi zizindikiro zazikulu za hydroxypropyl methyl cellulose (HPMC) ndi ziti?
Zomwe zili ndi Hydroxypropyl ndi viscosity, zomwe zambiri zimakhudzidwa ndi zizindikiro ziwirizi. Kusungidwa kwamadzi nthawi zambiri kumakhala kwabwino kwa omwe ali ndi hydroxypropyl yambiri. Mkulu mamasukidwe akayendedwe, madzi posungira, wachibale (osati mtheradi) ndi bwino, ndi mkulu mamasukidwe akayendedwe, bwino ntchito simenti matope.
6. Kodi zida zazikulu za hydroxypropyl methyl cellulose (HPMC) ndi ziti?
Zida zazikulu za HPMC: thonje woyengedwa, methyl chloride, propylene oxide, etc.
7. Kodi ntchito yaikulu ya hydroxypropyl methyl cellulose (HPMC) ndi chiyani mu putty powder? Kodi pali chemical reaction?
Mu putty powder, HPMC imagwira ntchito zitatu zokulitsa, kusunga madzi ndi kumanga.
Makulidwe: Ma cellulose amatha kukulitsidwa kuti ayimitse ndikusunga yunifolomu ya yankho ndi mmwamba ndi pansi, komanso anti-sagging.
Kusungirako madzi: pangani ufa wa putty kuti uume pang'onopang'ono, ndipo thandizani calcium yotuwira kuti igwire pansi pamadzi.
Zomangamanga: Ma cellulose amakhala ndi mafuta, omwe angapangitse ufa wa putty kukhala ndi ntchito yabwino.
HPMC sitenga nawo gawo pazamankhwala aliwonse, imangothandiza.
8. Kodi fungo la hydroxypropyl methyl cellulose (HPMC) ndi chiyani?
HPMC yopangidwa ndi njira yosungunulira imagwiritsa ntchito toluene ndi isopropanol ngati zosungunulira. Ngati sichinatsukidwe bwino, chimakhala ndi fungo lotsalira.
9. Kodi mungasankhire bwanji hydroxypropyl methylcellulose (HPMC) pazolinga zosiyanasiyana?
Kugwiritsa ntchito ufa wa putty: chofunikira ndichotsika, kukhuthala ndi 100,000, ndikokwanira, chofunikira ndikusunga madzi bwino.
Kugwiritsa ntchito matope: zofunika kwambiri, kukhuthala kwakukulu, 150,000 ndizabwinoko.
Glue kugwiritsa ntchito: zopangira pompopompo zimafunika, zokhala ndi kukhuthala kwakukulu.
10. Kugwiritsa ntchito hydroxypropyl methyl cellulose (HPMC) mu putty powder, n'chiyani chimayambitsa putty powder kupanga thovu?
Mu putty powder, HPMC imagwira ntchito zitatu zokulitsa, kusunga madzi ndi kumanga. Osachita nawo chilichonse.
Zifukwa za bubbles:
1）. Ikani madzi ochulukirapo.
2）. Ngati wosanjikiza wapansi si wouma, ingochotsani wosanjikiza wina pamwamba, kudzakhalanso kosavuta kutulutsa thovu.
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Zaka 8 Zogulitsa kunja China HPMC, Zomangamanga, Timagwirizanitsa mapangidwe, kupanga ndi kutumiza kunja pamodzi ndi antchito aluso oposa 100, machitidwe okhwima olamulira khalidwe ndi luso lamakono. USA, UK, Canada, Europe ndi Africa etc.
Nthawi yotumiza: Oct-22-2021