1, ntchito yayikulu ya hydroxypropyl methyl cellulose (HPMC) ndi iti?
HPMC chimagwiritsidwa ntchito zomangira, zokutira, utomoni kupanga, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC akhoza kugawidwa mu: kalasi yomanga, kalasi ya chakudya ndi kalasi yachipatala pogwiritsa ntchito. Pakali pano, ambiri mwa kalasi yomanga m'nyumba, mu kalasi yomanga, mlingo wa ufa wa putty ndi waukulu, pafupifupi 90% umagwiritsidwa ntchito popanga ufa wa putty, wotsalawo umagwiritsidwa ntchito popanga matope a simenti ndi zomatira.
2, hydroxypropyl methyl cellulose (HPMC) yagawika angapo, pali kusiyana kotani pakugwiritsa ntchito kwake?
HPMC akhoza kugawidwa mu nthawi yomweyo ndi otentha njira yothetsera, mankhwala yomweyo, m'madzi ozizira mwamsanga omwazika, kutha m'madzi, pa nthawi imeneyi madzi alibe mamasukidwe akayendedwe, chifukwa HPMC basi omwazika m'madzi, palibe kuvunda kwenikweni. Pafupifupi mphindi 2, kukhuthala kwamadzimadzi kumawonjezeka pang'onopang'ono, ndikupanga mawonekedwe a viscous colloid. Kutentha sungunuka mankhwala, m'madzi ozizira, akhoza mwamsanga omwazika m'madzi otentha, kutha m'madzi otentha, pamene kutentha akutsikira ndi kutentha, mamasukidwe akayendedwe pang'onopang'ono limapezeka, mpaka mapangidwe mandala viscous colloid. Yankho otentha angagwiritsidwe ntchito mu putty ufa ndi matope, mu madzi guluu ndi utoto, padzakhala gulu chodabwitsa, sungagwiritsidwe ntchito. Instant SOLUTION MODEL, NTCHITO ZOGWIRITSA NTCHITO NDI ZOCHEPA ZOCHEPA, KUBOWERWA NDI UPWELE WA MWANA NDI MDODO, NDI MU GUU WA AMADZIWA NDI OPITITSA, ONSE ANGAGWIRITSE NTCHITO, POPANDA KUSINTHA.
3, hydroxypropyl methyl cellulose (HPMC) njira zosungunulira zili nazo?
- A: Njira yosungunulira madzi otentha: chifukwa HPMC sisungunuka m'madzi otentha, kotero kuti HPMC yoyambirira imatha kumwazikana m'madzi otentha, kenako ndikusungunuka ikazizira, njira ziwiri zofananira zikufotokozedwa motere: 1), mu chidebe mumtsuko. kuchuluka kwa madzi otentha ofunikira, ndikutenthedwa mpaka pafupifupi 70 ℃. Pang'onopang'ono kuwonjezera hydroxypropyl methylcellulose pansi yogwira pang'onopang'ono, HPMC anayamba kuyandama pamwamba pa madzi, ndiyeno pang'onopang'ono kupanga slurry, pansi oyambitsa kuzirala slurry. 2), kuwonjezera kuchuluka chofunika 1/3 kapena 2/3 madzi mu chidebe, ndi kutentha 70 ℃, malinga ndi njira 1), HPMC kubalalitsidwa, kukonzekera slurry madzi otentha; Kenaka yikani madzi ozizira otsala ku slurry yotentha, yambitsani ndikuziziritsa kusakaniza. Ufa kusakaniza njira: HPMC ufa ndi chiwerengero chachikulu cha zinthu zina zosakaniza powdery, bwinobwino wothira blender, pambuyo kuwonjezera madzi kupasuka, ndiye HPMC akhoza kupasuka pa nthawi ino, koma osati mgwirizano, chifukwa ngodya iliyonse yaing'ono, kokha pang'ono HPMC ufa. , madzi adzasungunuka nthawi yomweyo. - Mabizinesi opanga ufa wa putty ndi matope akugwiritsa ntchito njirayi. Hydroxypropyl METHYL cellulose (HPMC) AMAGWIRITSA NTCHITO MONGA NTCHITO yopangira madzi komanso kusunga madzi mumatope a putty powder.
4, yosavuta komanso mwachilengedwe kudziwa mtundu wa hydroxypropyl methyl cellulose (HPMC)?
– Yankho: (1) whiteness: ngakhale woyera sangathe kudziwa ngati HPMC ndi yabwino ntchito, ndipo ngati anawonjezera mu ndondomeko kupanga whitening wothandizira, zingakhudze khalidwe lake. Komabe, zinthu zabwino zambiri zimakhala zoyera. (2) fineness: HPMC fineness zambiri 80 mauna ndi 100 mauna, 120 zochepa cholinga, Hebei HPMC makamaka 80 mauna, fineness fineness, zambiri bwino. (3) transmittance: the hydroxypropyl methyl cellulose (HPMC) m'madzi, mapangidwe a colloid transparent, onani transmittance yake, kuchulukitsitsa transmittance, bwino, zochepa insoluble zakuthupi mkati. The permeability wa ofukula riyakitala zambiri zabwino, yopingasa riyakitala ndi zoipa, koma sangakhoze kusonyeza kuti khalidwe ofukula riyakitala kupanga ndi bwino kuposa ya yopingasa riyakitala kupanga, mankhwala khalidwe anatsimikiza ndi zinthu zambiri. (4) mphamvu yokoka yeniyeni: pamene mphamvu yokoka yeniyeniyo imakhala yaikulu, yolemera kwambiri imakhala yabwinoko. Kuposa kofunika, nthawi zambiri chifukwa zomwe zili mu hydroxypropyl ndizokwera, hydroxypropyl imakhala yochuluka, ndiye kuti madzi amasungidwa bwino.
5, hydroxypropyl methyl cellulose (HPMC) mu kuchuluka kwa putty powder?
- Yankho: HPMC mu ntchito yeniyeni ya mlingo, ndi nyengo chilengedwe, kutentha, m'deralo kashiamu phulusa khalidwe, putty ufa chilinganizo ndi "zofuna kasitomala khalidwe", ndipo pali zosiyana. Nthawi zambiri, madzi osamva putty mlingo mu 4 kg - 5 kg pakati. Mwachitsanzo: Beijing putty ufa, makamaka kuika 5 kg; Ku Guizhou, ambiri a iwo ndi 5 kg m'chilimwe ndi 4.5 kg m'nyengo yozizira. Kuchuluka kwa Yunnan ndi kochepa, nthawi zambiri 3 kg -4 kg ndi zina zotero. Ndipo mlingo wa HPMC mu 821 putty nthawi zambiri umakhala 2 ~ 3 kg.
6, hydroxypropyl methyl cellulose (HPMC) ndi makulidwe angati oyenera?
– Yankho: kunyong’onyeka NDI UFA WA MWANA WAMKULU 100 THUSAND CHABWINO, ZOFUNIKIRA MU MORTA NDI ZAMtali, KUFUNA 150 THUSAND KUTHA KUGWIRITSA NTCHITO. Komanso, ntchito yofunika kwambiri ya HPMC ndi kusunga madzi, kenako thickening. Mu putty ufa, malinga ngati kusungirako madzi kuli bwino, kukhuthala kumakhala kochepa (7-80 zikwi), ndizothekanso, ndithudi, kukhuthala ndi kwakukulu, kusungirako madzi kumakhala bwino, pamene mamasukidwe akayendedwe ndi oposa. 100 zikwi, mamasukidwe akayendedwe ali ndi zotsatira zochepa pa kusunga madzi.
7, hydroxypropyl methyl cellulose (HPMC) zizindikiro zazikulu zaukadaulo ndi ziti?
A: Zomwe zili ndi Hydroxypropyl ndi viscosity, zomwe ogwiritsa ntchito ambiri amakhudzidwa nazo. Zomwe zili mu Hydroxypropyl ndizokwera, kusunga madzi nthawi zambiri kumakhala bwinoko. Kukhuthala, kusunga madzi, wachibale (koma osati mtheradi) ndi bwino, ndi mamasukidwe akayendedwe, mu matope simenti bwino ntchito ena.
8, hydroxypropyl methyl cellulose (HPMC) zida zazikulu ndi chiyani?
- Yankho: hydroxypropyl methyl cellulose (HPMC) ya zida zazikulu zopangira: thonje woyengedwa, chloromethane, propylene oxide, zopangira zina zili ndi piritsi la alkali, asidi, toluene, mowa wa isopropyl, ndi zina zambiri.
9, HPMC pakugwiritsa ntchito putty powder, gawo lalikulu ndi chiyani, kaya chemistry?
HPMC mu putty ufa, thickening, kusunga madzi ndi kumanga maudindo atatu. Makulidwe: Ma cellulose amatha kukulitsidwa kusewera kuyimitsidwa, kuti yankho likhalebe yunifolomu mmwamba ndi pansi pagawo lomwelo, anti otaya ikulendewera. Kusunga madzi: pangani ufa wa putty kuti uume pang'onopang'ono, phulusa la calcium lothandizira pansi pamadzi. Zomangamanga: Ma cellulose amakhala ndi mafuta, amatha kupanga putty powder kukhala ndi zomangamanga zabwino. HPMC satenga nawo gawo pazosintha zilizonse zamakina, imangogwira ntchito yothandiza. Putty ufa anawonjezera madzi, pakhoma, ndi anachita mankhwala, chifukwa pali m'badwo wa zinthu zatsopano, putty ufa pakhoma pansi pa khoma, pansi kukhala ufa, ndiyeno ntchito, izo sizilinso, chifukwa wapanga zinthu zatsopano (calcium carbonate). Zigawo zazikulu za ufa wa calcium imvi ndi: Ca(OH)2, CaO ndi kagawo kakang'ono ka CaCO3, CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O phulusa la calcium m'madzi. ndi mpweya pansi zochita za CO2, mapangidwe kashiamu carbonate, ndi HPMC kokha madzi posungira, wothandiza kashiamu phulusa bwino anachita, ake sanachite nawo chilichonse anachita.
10, HPMC non-ionic cellulose ether, ndiye non-ionic ndi chiyani?
A: Nthawi zambiri, nonionic ndi chinthu chomwe chili m'madzi chomwe sichikhala ndi ioni. Ionization ndi njira yomwe electrolyte imasiyanitsidwa kukhala ma ion oyendetsedwa momasuka muzosungunulira zina, monga madzi kapena mowa. Mwachitsanzo, sodium chloride (NaCl), mchere umene timadya tsiku ndi tsiku, umasungunuka m'madzi ndi ionizes kupanga ma ion a sodium (Na +) omwe ali ndi magetsi abwino komanso ma chloride ions (Cl) omwe ali ndi vuto loipa. Mwa kuyankhula kwina, HPMC m'madzi simagawanitsa mu ma ion opangidwa, koma imakhala ngati mamolekyu.
11, hydroxypropyl methylcellulose gel osakaniza kutentha ndi zogwirizana ndi chiyani?
- Yankho: Kutentha kwa gel osakaniza a HPMC kumagwirizana ndi zomwe zili mu methoxy. Kutsika kwa methoxy, ndipamwamba kutentha kwa gel.
12. Kodi pali ubale uliwonse pakati pa putty powder ndi HPMC?
- Yankho: ufa wa putty ufa ndi ubwino wa calcium uli ndi ubale waukulu, ndipo HPMC ilibe ubale wochuluka. Kashiamu yochepa ya calcium ndi gawo la CaO, Ca (OH)2 mu phulusa la calcium siloyenera, limayambitsa kugwa kwa ufa. Ngati ili ndi chochita ndi HPMC, ndiye kuti kusungirako madzi kwa HPMC ndi koyipa, kungayambitsenso kugwa kwa ufa. Pazifukwa zenizeni, chonde onani funso 9
13, hydroxypropyl methylcellulose madzi ozizira sungunuka mtundu ndi otentha sungunuka mu ndondomeko kupanga, kusiyana ndi chiyani?
- A: HPMC madzi ozizira sungunuka mtundu ndi pambuyo glyoxal pamwamba mankhwala, kuika m'madzi ozizira omwazika mwamsanga, koma osati kusungunuka, mamasukidwe akayendedwe mmwamba, ndi kusungunuka. Mtundu wosungunuka ndi kutentha sunapangidwe pamwamba ndi glyoxal. Voliyumu ya glyoxal ndi yayikulu, kubalalitsidwa kumathamanga, koma mamasukidwe ake amachedwa, voliyumu ndi yaying'ono, m'malo mwake.
14, hydroxypropyl methyl cellulose (HPMC) ili ndi fungo la zomwe zikuchitika?
- Yankho: HPMC yopangidwa ndi njira yosungunulira imapangidwa ndi toluene ndi mowa wa isopropyl monga zosungunulira. Ngati kutsuka sikuli bwino, padzakhala kukoma kotsalira.
15, ntchito zosiyanasiyana, momwe mungasankhire hydroxypropyl methyl cellulose (HPMC) yoyenera?
- Yankho: Kugwiritsa ntchito ufa wa putty: chofunika ndi chochepa, kukhuthala ndi 100 zikwi, kuli bwino, chofunika kwambiri ndikusunga madzi bwino. Kugwiritsa ntchito matope: kufunikira ndikwapamwamba, chofunikira ndi kukhuthala kwakukulu, 150 zikwizikwi ziyenera kukhala bwino. Kugwiritsa ntchito guluu: amafunikira zinthu pompopompo, kukhuthala kwakukulu.
16, hydroxypropyl methylcellulose ndi chiyani?
A: Hydroxypropyl Methyl Cellulose, English: Hydroxypropyl Methyl Cellulose chidule cha: HPMC kapena MHPC alias: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC pakugwiritsa ntchito putty powder, putty powder kuwira chifukwa chiyani?
HPMC mu putty ufa, thickening, kusunga madzi ndi kumanga maudindo atatu. Osatenga nawo mbali pazochita zilizonse. Chifukwa thovu: 1, madzi kuika kwambiri. 2, pansi si youma, pamwamba ndi scrape wosanjikiza, komanso zosavuta kuwira.
18. Putty ufa formula ya mkati ndi kunja kwa makoma?
– Yankho: madzi zosagwira putty ufa kwa khoma lamkati: 750 ~ 850KG wa heavy calcium, 150 ~ 250KG wa imvi kashiamu, 4 ~ 5KG wa mapadi ether, ndi 1 ~ 2KG wa polyvinyl mowa ufa akhoza moyenerera anawonjezera; Kunja khoma putty ufa: woyera simenti 350KG, heavy calcium 500-550kg, imvi kashiamu 100-150kg, latex ufa 8-12kg, mapadi etere 5KG, matabwa CHIKWANGWANI 3KG.
19. Kodi pali kusiyana kotani pakati pa HPMC ndi MC?
- MC ya methyl cellulose, ndi thonje woyengedwa pambuyo pa mankhwala a alkali, ndi methane chloride monga etherification agent, kudzera muzochita zingapo ndi mapadi a cellulose ether. Nthawi zambiri, kuchuluka kwa m'malo ndi 1.6 ~ 2.0, ndipo kusungunuka kwake kumasiyana ndi kuchuluka kwa kulowetsa. Ndi non-ionic cellulose ether.
(1) Kusungidwa kwa madzi kwa methyl cellulose kumadalira kuchuluka kwake, kukhuthala, kukongola kwa tinthu ndi liwiro la kusungunuka. Nthawi zambiri kuwonjezera kuchuluka, fineness yaing'ono, mamasukidwe akayendedwe, mkulu mlingo posungira madzi. Pakati pawo, kuchuluka kwa kuwonjezeredwa kwa madzi osungira madzi kumakhudza kwambiri, kukhuthala ndi msinkhu wa kusungirako madzi sikuli kofanana ndi chiyanjano. The Kusungunuka mlingo makamaka zimadalira pamwamba kusinthidwa digirii ndi tinthu fineness wa mapadi particles. Pamwamba pa cellulose ether, methyl cellulose ndi hydroxypropyl methyl cellulose kusungidwa kwa madzi ndipamwamba.
(2) Methyl cellulose imatha kusungunuka m'madzi ozizira, madzi otentha osungunuka amakumana ndi zovuta, njira yake yamadzi mu pH = 3 ~ 12 imakhala yokhazikika. Imagwirizana bwino ndi wowuma, chingamu cha guanidine ndi ma surfactants ambiri. Gelation imachitika pamene kutentha kufika kutentha kwa gelation.
(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa kusunga madzi kwa methyl cellulose. Nthawi zambiri, kutentha kumapangitsa kuti madzi asamasungidwe kwambiri. Ngati kutentha kwamatope kupitilira 40 ℃, kusungidwa kwa madzi kwa methyl cellulose kumakhala koyipa kwambiri, zomwe zingakhudze kwambiri kupanga matope.
(4) Methyl cellulose imakhala ndi chikoka pakupanga ndi kumamatira kwamatope. Apa, "kumatira" kumatanthauza mphamvu yomatira yomwe imamveka pakati pa chida chogwiritsira ntchito wogwira ntchito ndi gawo lapansi la khoma, ndiko kuti, kukana kukameta ubweya wa matope. Katundu womatira ndi wamkulu, kukana kukameta ubweya wa matope ndi kwakukulu, ndipo mphamvu yofunikira ndi ogwira ntchito pakugwiritsa ntchito imakhalanso yayikulu, kotero kuti katundu womanga matope ndi wosauka.
Mu mankhwala a cellulose ether, methyl cellulose adhesion ali pamlingo wapakatikati. HPMC ya hydroxypropyl methyl cellulose, imapangidwa ndi thonje woyengedwa pambuyo pa alkalization mankhwala, ndi propylene oxide ndi chloromethane monga etherifying agent, kudzera muzochita zambiri komanso zopangidwa ndi cellulose yosakanizidwa ndi ether. Digiri yolowa m'malo nthawi zambiri imakhala 1.2 ~ 2.0. Makhalidwe ake amakhudzidwa ndi kuchuluka kwa methoxy zomwe zili ndi hydroxypropyl.
(1) hydroxypropyl methyl cellulose sungunuka m'madzi ozizira, madzi otentha osungunuka amakumana ndi zovuta. Koma kutentha kwake kwa gelation m'madzi otentha ndikokwera kwambiri kuposa kwa methyl cellulose. Kusungunuka kwa methyl cellulose m'madzi ozizira kumakhalanso bwino kwambiri.
(2) kukhuthala kwa hydroxypropyl methyl cellulose kumakhudzana ndi kulemera kwake kwa maselo, ndipo kulemera kwake kwa maselo ndikokwera kwambiri. Kutentha kudzakhudzanso mamasukidwe ake, kutentha kumawonjezeka, kukhuthala kumachepa. Komabe, kukhuthala kwa kutentha kwakukulu kumakhala kotsika kuposa kwa methyl cellulose. Yankho lake ndi lokhazikika likasungidwa kutentha.
(3) hydroxypropyl methyl cellulose ndi yokhazikika ku asidi ndi alkali, ndipo njira yake yamadzimadzi imakhala yokhazikika pa pH = 2 ~ 12. Koloko ndi madzi a mandimu alibe zotsatira zabwino pa katundu wake, koma zamchere zimatha kufulumizitsa kusungunuka kwake ndikuwongolera kukhuthala kwa pini. Hydroxypropyl methyl cellulose imakhala yokhazikika ku mchere wamba, koma mchere ukakhala wambiri, kukhuthala kwa hydroxypropyl methyl cellulose solution kumawonjezeka.
(4) Kusungidwa kwa madzi kwa hydroxypropyl methyl cellulose kumadalira kuchuluka kwake, kukhuthala kwake, etc., kuchuluka komweko kwa madzi osungirako ndikokwera kuposa methyl cellulose.
(5) hydroxypropyl methyl cellulose akhoza kusakaniza ndi madzi sungunuka polima mankhwala kukhala yunifolomu, apamwamba mamasukidwe akayendedwe njira. Monga polyvinyl mowa, wowuma ether, chingamu chomera ndi zina zotero.
(6) Kumamatira kwa hydroxypropyl methyl cellulose pakupanga matope ndikokwera kuposa methyl cellulose.
(7) hydroxypropyl methyl cellulose imakhala ndi kukana kwa enzymatic kuposa methyl cellulose, ndipo kuthekera kwa kuwonongeka kwa enzymatic kwa yankho lake ndikotsika kuposa methyl cellulose.
20, ubale pakati pa mamasukidwe akayendedwe ndi kutentha kwa HPMC, zomwe ziyenera kutsatiridwa pakugwiritsa ntchito?
- Yankho: The mamasukidwe akayendedwe a HPMC ndi inversely molingana ndi kutentha, ndiko kuti, mamasukidwe akayendedwe amawonjezeka ndi kuchepa kwa kutentha. Tikamalankhula za kukhuthala kwa chinthu, timatanthawuza zotsatira za kuyeza njira yake yamadzi 2% pa kutentha kwa madigiri 20 Celsius. Pogwiritsira ntchito, m'madera omwe ali ndi kusiyana kwakukulu kwa kutentha pakati pa chilimwe ndi nyengo yozizira, chidwi chiyenera kuperekedwa ku malingaliro ogwiritsira ntchito kukhuthala kochepa kwambiri m'nyengo yozizira, yomwe imakhala yabwino kwambiri pomanga. Apo ayi, pamene kutentha kuli kochepa, kukhuthala kwa cellulose kudzawonjezeka, pamene kupukuta, kumva kumakhala kolemetsa. Sing'anga mamasukidwe akayendedwe :75000-100000 zimagwiritsa ntchito chifukwa putty: zabwino posungira madzi mkulu mamasukidwe akayendedwe :150000-200000 zimagwiritsa ntchito polystyrene particles matenthedwe kutchinjiriza matope guluu ufa zinthu ndi galasi mikanda matenthedwe kutchinjiriza matope. Chifukwa: mkulu mamasukidwe akayendedwe, matope si zophweka kugwetsa phulusa ndi kutuluka atapachikidwa, kusintha yomanga. Koma kawirikawiri, ndipamwamba kukhuthala kwamphamvu, ndi bwino kusunga madzi kudzakhala bwino, ambiri youma matope mafakitale amaganizira mtengo, ndi sing'anga mamasukidwe akayendedwe mapanelo cellulose (75,000-100000) m'malo otsika mamasukidwe akayendedwe mapadi (20,000-40000) kuchepetsa kuchuluka kwa kuwonjezera.
Nthawi yotumiza: Feb-05-2024