1. Ntchito yayikulu ya chiyanihydroxypropyl methylcellulose (HPMC)?
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 mankhwala malinga ndi cholinga. Pakali pano, zinthu zambiri zapakhomo ndizomangamanga. Pomanga kalasi, ufa wa putty umagwiritsidwa ntchito mochuluka, pafupifupi 90% umagwiritsidwa ntchito ngati putty ufa, ndipo enawo amagwiritsidwa ntchito ngati matope a simenti.
2. Kodi fungo la hydroxypropyl methylcellulose (HPMC) ndi chiyani?
HPMC yopangidwa ndi njira yosungunulira imagwiritsa ntchito toluene ndi isopropanol ngati zosungunulira. Ngati kusamba sikuli bwino, padzakhala fungo lotsalira.
3. Kodi njira zosungunulira za hydroxypropyl methylcellulose (HPMC) ndi ziti?
Njira yosungunula madzi otentha: Popeza HPMC sisungunuka m'madzi otentha, HPMC imatha kumwazikana m'madzi otentha poyambira, kenako imasungunuka ikakhazikika. Njira ziwiri zodziwika bwino zimafotokozedwa motere:
1) Ikani madzi otentha ofunikira mumtsuko ndikutenthetsa pafupifupi 70 ° C. Hydroxypropyl methylcellulose inawonjezeredwa pang'onopang'ono ndikugwedeza pang'onopang'ono, poyamba HPMC inayandama pamwamba pa madzi, ndipo pang'onopang'ono imapanga slurry, yomwe inakhazikika pansi pa kugwedezeka.
2), onjezani 1/3 kapena 2/3 yamadzi ofunikira mumtsuko, ndikuwotcha mpaka 70 ° C, falitsani HPMC molingana ndi njira ya 1), ndikukonzekera slurry yamadzi otentha; kenaka yikani otsala kuchuluka kwa madzi ozizira kwa madzi otentha slurry, osakaniza utakhazikika pambuyo oyambitsa.
Njira yosakaniza ufa: sakanizani ufa wa HPMC ndi zinthu zina zambiri za ufa, sakanizani bwino ndi chosakanizira, kenaka yikani madzi kuti asungunuke, ndiye HPMC ikhoza kusungunuka panthawiyi popanda agglomeration, chifukwa pali HPMC pang'ono pakona iliyonse ya Powder, idzasungunuka nthawi yomweyo ikakumana ndi madzi. ——Opanga matope a ufa ndi matope akugwiritsa ntchito njirayi. [Hydroxypropyl methylcellulose (HPMC) amagwiritsidwa ntchito ngati thickener ndi chosungira madzi mu putty powder mortar. ]
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 zowonjezera zoyera zikuwonjezeredwa panthawi yopanga, zidzakhudza khalidwe lake. Komabe, zinthu zambiri zabwino zimakhala ndi zoyera zabwino.
(2) Fineness: Ubwino wa HPMC nthawi zambiri umakhala ndi mauna 80 ndi mauna 100, ndipo mauna 120 ndiwocheperako. HPMC yambiri yopangidwa ku Hebei ndi 80 mesh. Kukongoletsedwa bwino, kunena zambiri, kumakhala bwinoko.
(3) Kutumiza kuwala: kuikahydroxypropyl methylcellulose (HPMC)m'madzi kuti apange colloid yowonekera, ndikuyang'ana kuwala kwake. Kuchuluka kwa kuwala kwamagetsi, kumakhala bwinoko, kusonyeza kuti muli ma insolubles ochepa mmenemo. . The permeability wa ofukula riyakitala zambiri zabwino, ndi yopingasa riyakitala ndi zoipa, koma sizikutanthauza kuti khalidwe ofukula riyakitala kuposa yopingasa riyakitala, ndi mankhwala khalidwe anatsimikiza ndi zinthu zambiri.
(4) Mphamvu yokoka yeniyeni: Kuchuluka kwa mphamvu yokoka kwapadera, ndikolemera kwambiri. Kutsimikizika ndi kwakukulu, makamaka chifukwa zomwe zili mugulu la hydroxypropyl momwemo ndizazikulu, ndipo zomwe zili mugulu la hydroxypropyl ndizokwera, kusungirako madzi kuli bwino.
5. Kodi pali kusiyana kotani pakati pa madzi ozizira nthawi yomweyo ndi mtundu wosungunuka wa hydroxypropyl methylcellulose popanga?
Mtundu wobalalika mwachangu wa HPMC umayikidwa pamwamba ndi glyoxal, ndipo umabalalika mwachangu m'madzi ozizira, koma samasungunuka kwenikweni. Imasungunuka kokha pamene mamasukidwe akayendedwe akuwonjezeka. Mtundu waposachedwa ulibe chithandizo chapamwamba 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.
6. Kodi kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) ndi chiyani?
Ufa wa putty nthawi zambiri umakhala 100,000 yuan, ndipo zofunikira pamatope ndizokwera, ndipo 150,000 yuan ndizofunikira kuti zigwiritsidwe ntchito mosavuta. Komanso, ntchito yofunika kwambiri ya HPMC ndi kusunga madzi, kenako thickening. Mu ufa wa putty, malinga ngati kusungirako madzi kuli bwino ndipo kukhuthala kuli kochepa (70,000-80,000), ndizothekanso. Zoonadi, kukwezeka kwa viscosity kumapangitsa kuti madzi azikhala bwino. Pamene mamasukidwe akayendedwe kuposa 100,000, mamasukidwe akayendedwe adzakhudza kasungidwe madzi. Osatinso zambiri.
7. Kodi zizindikiro zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?
Hydroxypropyl zili ndi mamasukidwe akayendedwe, anthu ambiri nkhawa zizindikiro ziwirizi. Amene ali ndi hydroxypropyl yambiri amakhala ndi madzi osungira bwino. Amene ali ndi kukhuthala kwakukulu amakhala ndi madzi osungira bwino, (osati mwamtheradi), ndipo omwe ali ndi kukhuthala kwakukulu amagwiritsidwa ntchito bwino mumatope a simenti.
8. Kodi zopangira zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?
Zida zazikulu za hydroxypropyl methylcellulose (HPMC): thonje woyengedwa, methyl chloride, propylene oxide, ndi zina zopangira, caustic soda, asidi, toluene, isopropanol, etc.
9. Kodi ntchito yayikulu yogwiritsira ntchito ndi chiyaniMtengo wa HPMCmu putty powder, ndipo zimachitika ndi mankhwala?
Mu putty powder, HPMC imagwira ntchito zitatu zokulitsa, kusunga madzi ndi kumanga.
Kukhuthala: Ma cellulose amatha kukhuthala kuti ayimitse ndikusunga yunifolomu ya yankho mmwamba 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.
Kuonjezera madzi ku ufa wa putty ndikuwuyika pakhoma ndi mankhwala, chifukwa zinthu zatsopano zimapangidwira. Ngati mutachotsa ufa wa putty pakhoma kuchokera pakhoma, perani kukhala ufa, ndikugwiritsanso ntchito, sizingagwire ntchito chifukwa zinthu zatsopano (calcium carbonate) zapangidwa. ) nawonso.
Zigawo zazikulu za ufa wa phulusa la calcium ndi: osakaniza Ca (OH) 2, CaO ndi CaCO3 pang'ono, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Kashiamu yam'madzi ili m'madzi ndi mpweya Pansi pa CO2, calcium carbonate imapangidwa, pamene HPMC imasunga kashiamu m'madzi, imagwiranso ntchito bwino, imathandizira madzi.
10. HPMC ndi ether yosakhala ya ionic cellulose, ndiye kuti si-ionic ndi chiyani?
M'mawu a layman, si-ion ndi zinthu zomwe sizimayimitsa m'madzi. Ionization imatanthawuza njira yomwe electrolyte imasiyanitsidwa ndi ma ion omwe amatha kuyenda momasuka muzosungunulira zina (monga madzi, mowa). Mwachitsanzo, sodium chloride (NaCl), mchere umene timadya tsiku lililonse, umasungunuka m'madzi ndi ionizes kupanga ma ion sodium (Na+) omwe ali ndi magetsi abwino komanso ma chloride ions (Cl) omwe ali ndi vuto loipa. Ndiko kunena kuti, HPMC ikayikidwa m'madzi, sidzasiyanitsidwa ndi ma ion opangidwa, koma imakhalapo ngati mamolekyu.
11. Kodi kutentha kwa gelisi ya hydroxypropyl methylcellulose 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 ubale uliwonse pakati pa dontho la putty powder ndi HPMC?
Kutayika kwa ufa wa putty powder makamaka kumagwirizana ndi khalidwe la phulusa la calcium, ndipo silikugwirizana kwenikweni ndi HPMC. Kashiamu wochepa wa calcium yotuwira ndi chiŵerengero chosayenera cha CaO ndi Ca(OH)2 mu kashiamu wotuwa zidzachititsa kuti ufa uwonongeke. Ngati ili ndi chochita ndi HPMC, ndiye ngati HPMC ili ndi kusungirako madzi kosauka, idzachititsanso kutaya ufa.
13. Kodi pali kusiyana kotani pakati pa madzi ozizira nthawi yomweyo ndi mtundu wosungunuka wa hydroxypropyl methylcellulose popanga?
Mtundu wobalalika mwachangu waMtengo wa HPMCimayikidwa pamwamba ndi glyoxal, ndipo imabalalika mwachangu m'madzi ozizira, koma samasungunuka kwenikweni. Imasungunuka kokha pamene mamasukidwe akayendedwe akuwonjezeka. Mtundu waposachedwa ulibe chithandizo chapamwamba 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.
Nthawi yotumiza: Apr-25-2024