Yankho la HPMC

1, ntchito yayikulu ya hydroxypropyl methyl cellulose (HPMC) ndi iti?

Answer :HPMC chimagwiritsidwa ntchito zomangira, zokutira, kupanga utomoni, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena.HPMC akhoza kugawidwa mu: kalasi yomanga, kalasi chakudya ndi mankhwala kalasi malinga ndi ntchito.Pakalipano zopanga kunyumba ndizomangamanga, pakumanga, kuchuluka kwa ufa wa putty ndi waukulu kwambiri, pafupifupi 90% amagwiritsidwa ntchito popanga ufa wa putty, enawo amagwiritsidwa ntchito popanga matope a simenti ndi zomatira.

2, hydroxypropyl methyl cellulose (HPMC) imagawidwa m'mitundu ingapo, pali kusiyana kotani pakati pa kugwiritsidwa ntchito kwake?

Answer :HPMC akhoza kugawidwa mu nthawi yomweyo ndi kutentha sungunuka, mankhwala yomweyo, m'madzi ozizira mwamsanga omwazika, mbisoweka 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, mu madzi ozizira agglomeration, akhoza kukhala m'madzi otentha, mwamsanga omwazika, kutha m'madzi otentha, mpaka kutentha akutsikira kwa kutentha, mamasukidwe akayendedwe pang'onopang'ono kuoneka, mpaka mapangidwe mandala viscous colloid.Kutentha sungunuka mtundu angagwiritsidwe ntchito mu putty ufa ndi matope, mu madzi guluu ndi ❖ kuyanika, akhoza kuoneka agglomeration chodabwitsa, sangagwiritsidwe ntchito.Mtundu wosungunula pompopompo, kuchuluka kwa ntchito ndikokulirapo pang'ono, kukhala wotopa ndi ufa wa ana ndi matope, komanso mu guluu wamadzimadzi ndi zokutira, zonse zitha kugwiritsidwa ntchito, osakhala ndi tabu.

3, hydroxypropyl methyl cellulose (HPMC) njira zosungunulira zili nazo?

- Yankho: Njira yosungunula madzi otentha: chifukwa HPMC sisungunuka m'madzi otentha, kotero kuti HPMC yoyambirira imatha kumwazikana m'madzi otentha, kenako ndikusungunuka mwachangu pozizira, njira ziwiri zofananira zikufotokozedwa motere:

1) Dzazani chidebecho ndi madzi otentha momwe mungafunire ndikutenthetsa mpaka 70 ℃.Hydroxypropyl methyl cellulose imawonjezeredwa pang'onopang'ono ndikugwedeza pang'onopang'ono, ndipo HPMC imayandama pamwamba pa madzi, kenako pang'onopang'ono imapanga slurry, yomwe imakhazikika pansi pa kugwedezeka.

2) Onjezani 1/3 kapena 2/3 ya kuchuluka kwa madzi ofunikira mumtsuko ndikutenthetsa mpaka 70 ℃.Kumwaza HPMC molingana ndi njira 1) kukonzekera slurry madzi otentha;Kenaka yikani madzi ozizira otsala ku slurry yamadzi otentha ndikuziziritsa kusakaniza mutatha kuyambitsa.

Ufa kusakaniza njira: HPMC ufa ndi chiwerengero chachikulu cha zinthu zina zosakaniza powdery, mokwanira wothira blender, ndiye kuwonjezera madzi kupasuka, pa nthawi ino HPMC akhoza kupasuka, osati agglomerate, chifukwa aliyense ngodya ting'onoting'ono, kokha pang'ono HPMC ufa, madzi. idzasungunuka nthawi yomweyo.- Opanga matope ndi matope amagwiritsa ntchito njirayi.[Hydroxypropyl methyl cellulose (HPMC) yogwiritsidwa ntchito ngati thickening agent ndi kusunga madzi mu putty powder mortar.

4, momwe mungadziwire mtundu wa hydroxypropyl methyl cellulose (HPMC) yosavuta komanso mwachilengedwe?

Yankho : (1) kuyera: ngakhale kuyera sikungadziwe ngati HPMC ndi yabwino, ndipo ngati iwonjezeredwa pakupanga whitener, idzakhudza khalidwe lake.Komabe, zinthu zambiri zabwino zimakhala ndi zoyera zabwino.(2) fineness: HPMC fineness zambiri 80 mauna ndi 100 mauna, 120 zolinga zochepa, Hebei HPMC makamaka 80 mauna, fineness fineness, nthawi zambiri, bwino.(3) transmittance: the hydroxypropyl methyl cellulose (HPMC) m'madzi, mapangidwe a colloid transparent, onani transmittance yake, chachikulu transmittance ndi bwino, insoluble zinthu mkati zochepa.The transmittance of ofukula riyakitala zambiri zabwino, ndi yopingasa riyakitala ndi zoipa, koma sizikutanthauza kuti khalidwe la kupanga ofukula riyakitala ndi bwino kuposa yopingasa riyakitala.Pali zifukwa zambiri zodziwira ubwino wa mankhwala.(4) Chigawo: kukula kwa gawo, kulemera kumakhala bwinoko.Kuposa zazikulu, chifukwa mkati mwa hydroxyl propyl base zomwe zili ndi hydroxyl propyl base ndizokwera kwambiri, zimateteza madzi kuti azifuna bwino.

5, kukhuthala kwa hydroxypropyl methyl cellulose (HPMC) ndikoyenera kwambiri?

- Yankho: kukhala wotopa ndi ufa wa ana kuli bwino nthawi zambiri 100 zikwi, zina zazitali zomwe zimafunikira mumatope, ndikufuna 150 zikwi zogwiritsa ntchito.Komanso, HPMC ndi gawo lofunika kwambiri la kusunga madzi, kutsatiridwa ndi thickening.Mu putty ufa, bola ngati kusungirako madzi kuli bwino, kukhuthala kumakhala kochepa (7-80 zikwi), ndizothekanso, ndithudi, kukhuthala ndi kwakukulu, kusungirako madzi kwachibale kumakhala bwino, pamene mamasukidwe akayendedwe ndi oposa. 100 zikwi, kukhuthala kwa kusungirako madzi sikokwanira.

6, hydroxypropyl methyl cellulose (HPMC) zizindikiro zazikulu zaukadaulo ndi ziti?.

Yankho: Zomwe zili ndi Hydroxypropyl ndi viscosity, ogwiritsa ntchito ambiri amasamala za zizindikiro ziwirizi.Zomwe zili mu Hydroxypropyl ndizokwera, kusunga madzi nthawi zambiri kumakhala bwinoko.Kukhuthala, kusunga madzi, wachibale (koma osati mtheradi) ndi bwino, ndi mamasukidwe akayendedwe, simenti matope ndi bwino ntchito ena.

7, hydroxypropyl methyl cellulose (HPMC) ndi zida ziti zazikulu zopangira?

Yankho: hydroxypropyl methyl cellulose (HPMC) zopangira zazikulu: thonje woyengedwa, chloromethane, propylene oxide, zopangira zina, piritsi zamchere, asidi, toluene, mowa wa isopropyl ndi zina zotero.

8, HPMC pakugwiritsa ntchito ufa wa putty, gawo lalikulu, kaya kuchitika kwa chemistry?

Yankho: HPMC mu putty ufa, thickening, madzi ndi kumanga maudindo atatu.Makulidwe: mapadi amatha kukulitsidwa kuti ayimitsidwe, kotero kuti yankho limakhalabe yunifolomu mmwamba ndi pansi udindo wa anti-otaya yopachikidwa.Kusungirako madzi: pangani ufa wa putty kuti uume pang'onopang'ono, kashiamu wothandiza wa imvi pochita madzi.Kumanga: kudzoza kwa cellulose, kumatha kupanga ufa wa putty kukhala ndi zomangamanga zabwino.HPMC sitenga nawo gawo pazosintha zilizonse zamakina, koma imangothandiza.Putty ufa ndi madzi, pakhoma, ndi mankhwala anachita, chifukwa cha m'badwo wa zinthu zatsopano, khoma la putty ufa pansi pa khoma, pansi kukhala ufa, ndiyeno ntchito, osati zabwino, chifukwa wapanga chinthu chatsopano. (calcium carbonate).Chopangidwa chachikulu cha gray calcium powder ndi chisakanizo cha Ca(OH)2,CaO ndi pang'ono CaCO3,CaO+H2O=Ca(OH)2 — Ca(OH)2+CO2=CaCO3↓+H2O Gray calcium mu madzi ndi mpweya pansi zochita za CO2, calcium carbonate, ndi HPMC madzi okha, kuthandiza imvi kashiamu bwino anachita, ake sanachite nawo chilichonse anachita.

9.HPMC non-ionic cellulose ether, ndiye chomwe si-ionic ndi chiyani?

Yankho: Nthawi zambiri, ma non-ion ndi zinthu zomwe sizimayanika m'madzi.Ionization ndi kupasuka kwa ma electrolyte kukhala ma ion oyendetsedwa mwaulere muzosungunulira zina, monga madzi kapena mowa.Mwachitsanzo, mchere umene timadya tsiku lililonse - sodium kolorayidi (NaCl) umasungunuka m'madzi ndi ionizes kuti apange ayoni a sodium (Na +) omwe ali ndi ndalama zabwino komanso chloride ions (Cl) ndi ndalama zoipa.Ndiko kuti, HPMC m'madzi simagawanitsa mu ma ion opangidwa, koma imakhala ngati mamolekyu.

10. Kodi kutentha kwa gel wa hydroxypropyl methyl cellulose kumakhudzana bwanji?

- Yankho: Kutentha kwa gel osakaniza a HPMC kumagwirizana ndi zomwe zili ndi methoxyl, kutsika kwa methoxyl ↓, kumapangitsa kutentha kwa gel.

11, putty ufa ufa ndi HPMC palibe ubale?

Yankho: putty powder drop powder makamaka ndi phulusa la calcium khalidwe liri ndi ubale waukulu kwambiri, ndipo HPMC ilibe ubale waukulu kwambiri.Kashiamu wochepa wa calcium yotuwira komanso kuchuluka kosayenera kwa CaO ndi Ca(OH)2 mu kashiamu wotuwira kumapangitsa kuti ufa ugwe.Ngati pali chiyanjano pang'ono ndi HPMC, ndiye kuti kusungirako madzi kwa HPMC kumakhala kosauka, kudzachititsanso ufa.

12, hydroxypropyl methyl cellulose madzi ozizira sungunuka ndi otentha sungunuka mu kupanga kupanga kusiyana ndi chiyani?

– Yankho : HPMC madzi ozizira yomweyo njira yothetsera mtundu pambuyo glyoxal pamwamba mankhwala, kuika m'madzi ozizira omwazika mwamsanga, koma osati kwenikweni kusungunuka, mamasukidwe akayendedwe mmwamba, ndi kusungunuka.Mtundu wa thermosoluble sunapangidwe pamwamba ndi glyoxal.Kuchuluka kwa glyoxal ndi kwakukulu, kubalalitsidwa kumathamanga, koma mamasukidwe ake amachedwa, kuchuluka kwake ndi kochepa, m'malo mwake.

13, hydroxypropyl methyl cellulose (HPMC) kununkhira kuli bwanji?

- Yankho: HPMC yopangidwa ndi njira yosungunulira imapangidwa ndi toluene ndi mowa wa isopropyl.Ngati kutsuka sikuli bwino, padzakhala kukoma kotsalira.

14, ntchito zosiyanasiyana, momwe mungasankhire hydroxypropyl methyl cellulose (HPMC) yoyenera?

- Yankho: kukhala wotopa ndi kugwiritsa ntchito ufa wa mwana: chofunikira ndi chochepa, kukhuthala kwa 100 zikwi, chabwino, ndikofunikira kuteteza madzi kuti akhale pafupi.Kugwiritsa ntchito matope: zofunikira zapamwamba, zofunikira kwambiri za viscosity, 150 zikwi kuti zikhale bwino.Glue ntchito: kufunikira kwa zinthu pompopompo, kukhuthala kwakukulu.

15.Kodi hydroxypropyl methyl cellulose ndi chiyani?

- YANKHO: Hydroxypropyl Methyl Cellulose, Chidule cha HPMC kapena MHPC, kapena Hydroxypropyl Methyl Cellulose;Cellulose hydroxypropyl methyl ether;Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether.

16.HPMC pogwiritsira ntchito putty powder, putty powder bubble chifukwa chiyani?

Yankho: HPMC mu putty ufa, thickening, madzi ndi kumanga maudindo atatu.Osatenga nawo mbali pazochita zilizonse.Zomwe zimayambitsa thovu: 1, madzi ochulukirapo.2, pansi siwouma, pamwamba pa scraping wosanjikiza, komanso yosavuta matuza.

17. Kodi pali kusiyana kotani pakati pa HPMC ndi MC?

- Yankho :MC ndi methyl cellulose, yomwe imapangidwa ndi cellulose ether kudzera muzochita zingapo ndi methane chloride ngati etherifying agent pambuyo poti thonje loyengedwa limapangidwa ndi alkali.Nthawi zambiri, mlingo woloweza m'malo ndi 1.6 ~ 2.0, ndipo kusungunuka kwake kumasiyanasiyana ndi kuchuluka kwa kulowetsa.Ndi ya nonionic cellulose ether.

(1) Kusungidwa kwa madzi kwa methyl cellulose kumadalira kuchuluka kwake, kukhuthala, kukongola kwa tinthu ndi kuchuluka kwa kusungunuka.Nthawi zambiri kuwonjezera kuchuluka, fineness yaing'ono, mamasukidwe akayendedwe, madzi posungira mlingo ndi mkulu.Pakati pawo, kuchuluka kwa zowonjezera kumakhudza kwambiri kusungirako madzi, ndipo mamasukidwe akayendedwe sali ofanana ndi kusungirako madzi.The Kusungunuka mlingo makamaka zimadalira pamwamba kusinthidwa digirii ndi tinthu fineness wa mapadi particles.M'ma cellulose ether angapo omwe ali pamwambapa, methyl cellulose ndi hydroxypropyl methyl cellulose kusungidwa kwa madzi ndipamwamba.

(2) Methyl cellulose imasungunuka m'madzi ozizira, omwe ndi ovuta kusungunuka m'madzi otentha.Njira yake yamadzimadzi imakhala yokhazikika mkati mwa pH = 3 ~ 12.Imagwirizana bwino ndi wowuma, chingamu cha guanidine ndi ma surfactants ambiri.Gelation imachitika pamene kutentha kumafika 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 kwa matope kupitirira 40 ℃, kusungidwa kwa madzi kwa methyl cellulose kumakhala koyipa kwambiri, zomwe zimakhudza kwambiri kumangidwa kwa matope.

(4) Methyl cellulose ali ndi chikoka chodziwikiratu pakupanga ndi kumamatira kwa matope."Kumamatira" apa kumatanthauza kumamatira kwa wogwira ntchito pakati pa chida ndi gawo lapansi la khoma, ndiko kukana kukameta ubweya wa matope.Kumamatira ndi kwakukulu, kukana kukameta ubweya wa matope ndi kwakukulu, mphamvu yofunikira ndi ogwira ntchito pakugwiritsa ntchito imakhalanso yaikulu, ndipo kumanga matope ndi osauka.Muzinthu za cellulose ether, kumamatira kwa methyl cellulose kumakhala pamlingo wocheperako.

HPMC ya hydroxypropyl methyl cellulose, imayengedwa ndi thonje pambuyo pa mankhwala a alkali, ndi propylene oxide ndi chloromethane monga etherifying agent, kudzera muzochita zingapo komanso zopangidwa ndi cellulose yosakanizidwa ndi ether.Mlingo wolowa m'malo nthawi zambiri ndi 1.2 ~ 2.0.Makhalidwe ake amasiyana malinga ndi kuchuluka kwa methoxy ndi hydroxypropyl.

(1) Hydroxypropyl methyl cellulose imasungunuka mosavuta m'madzi ozizira, omwe ndi ovuta kusungunuka m'madzi otentha.Komabe, kutentha kwake kwa gelation m'madzi otentha mwachiwonekere ndikokwera kuposa kwa methyl cellulose.Kusungunuka kwa methyl cellulose m'madzi ozizira kunasinthanso kwambiri.

(2) Kukhuthala kwa hydroxypropyl methyl cellulose kumakhudzana ndi kulemera kwake kwa maselo, ndipo kulemera kwake kwa mamolekyu kumakwera kwambiri.Kutentha kumakhudzanso mamasukidwe akayendedwe.Viscosity imachepa pamene kutentha kumawonjezeka.Koma kukhuthala kwake kutentha kwakukulu kumakhala kotsika kuposa kwa methyl cellulose.Yankho lake ndi lokhazikika likasungidwa kutentha.

(3) Hydroxypropyl methyl cellulose ndi yokhazikika ku asidi ndi maziko, ndipo njira yake yamadzimadzi imakhala yokhazikika pa pH = 2 ~ 12.Koloko ndi madzi a mandimu alibe mphamvu zochepa pa katundu wake, koma zamchere zimatha kufulumizitsa kusungunuka kwake ndikuwongolera kukhuthala.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 mulingo wake komanso kukhuthala kwake, komanso kuchuluka kwa madzi a hydroxypropyl methyl cellulose ndi apamwamba kuposa a methyl cellulose pa mlingo womwewo.

(5) Hydroxypropyl methyl cellulose akhoza kusakaniza ndi madzi sungunuka polima mankhwala kukhala yunifolomu, apamwamba mamasukidwe akayendedwe njira.Monga polyvinyl mowa, wowuma ether, masamba guluu ndi zina zotero.

(6) Kumamatira kwa hydroxypropyl methyl cellulose pakupanga matope ndikokwera kuposa methyl cellulose.

(7) Hydroxypropyl methyl cellulose imakhala ndi kukana bwino kwa enzyme kuposa methyl cellulose, ndipo njira yake yowonongeka ya enzyme ndiyotsika kuposa ya methyl cellulose.

18. Ndi chiyani chomwe chiyenera kutsatiridwa pakugwiritsa ntchito mgwirizano pakati pa mamasukidwe akayendedwe ndi kutentha kwa HPMC?

Yankho: Kukhuthala kwa HPMC ndikofanana ndi kutentha, ndiko kuti, kukhuthala kumawonjezeka ndi kuchepa kwa kutentha.Tikamalankhula za kukhuthala kwa chinthu, tikukamba za kukhuthala kwa 2% ya mankhwalawa m'madzi pa madigiri 20 Celsius.

Pogwiritsira ntchito, m'madera omwe ali ndi kusiyana kwakukulu kwa kutentha pakati pa chilimwe ndi nyengo yozizira, ziyenera kukumbukiridwa kuti tikulimbikitsidwa kugwiritsa ntchito viscosity yochepa kwambiri m'nyengo yozizira, yomwe imakhala yabwino kwambiri pomanga.Apo ayi, kutentha kukakhala kochepa, kukhuthala kwa cellulose kumawonjezeka, ndipo pamene kupukuta, kumva kumakhala kolemetsa.

Kukhuthala kwapakatikati :75000-100000 makamaka amagwiritsidwa ntchito pa putty.

Chifukwa: Kusunga madzi bwino.

High mamasukidwe akayendedwe :150000-200000 zimagwiritsa ntchito polystyrene tinthu kutchinjiriza matope ufa ndi vitrified mikanda kutchinjiriza matope.

Chifukwa: mkulu mamasukidwe akayendedwe, matope si zophweka kugwetsa, otaya akulendewera, kusintha yomanga.

Koma kawirikawiri, ndipamwamba kukhuthala kwamphamvu, ndi bwino kusunga madzi, ambiri youma matope fakitale, kuganizira mtengo, ntchito sing'anga mamasukidwe akayendedwe mapanelo mapadi (75000-100000) m'malo sing'anga ndi otsika mamasukidwe akayendedwe mapadi (20000-40000) kuchepetsa kuchuluka. cha kuwonjezera.