1. Kodi hydroxypropyl methylcellulose (HPMC) amagwiritsidwa ntchito bwanji?
——Yankho: HPMC imagwiritsidwa ntchito kwambiri pomanga, zokutira, utomoni wopangira, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC akhoza kugawidwa mu: kalasi yomanga, kalasi chakudya ndi kalasi mankhwala malinga ntchito. 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 ndi guluu.
2. Pali mitundu ingapo ya hydroxypropyl methylcellulose (HPMC), ndipo pali kusiyana kotani pakugwiritsa ntchito kwawo?
——Yankho: HPMC ikhoza kugawidwa mu mtundu wanthawi yomweyo ndi mtundu wotentha-kusungunuka. Instant mtundu mankhwala amabalalitsa mwamsanga m'madzi ozizira ndi kutha m'madzi. Panthawi imeneyi, madzi alibe mamasukidwe akayendedwe, chifukwa HPMC kokha omwazika m'madzi popanda kuvunda kwenikweni. Pafupifupi mphindi 2, kukhuthala kwamadzimadzi kumawonjezeka pang'onopang'ono, ndikupanga mawonekedwe a viscous colloid. Zogulitsa zotentha zotentha, zikakumana ndi madzi ozizira, zimatha kumwazikana m'madzi otentha ndikuzimiririka m'madzi otentha. Kutentha kumatsika mpaka kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka kumapanga mawonekedwe a viscous colloid. Mtundu wosungunuka wotentha ukhoza kugwiritsidwa ntchito mu putty ufa ndi matope. Mu guluu wamadzimadzi ndi utoto, padzakhala zochitika zamagulu ndipo sizingagwiritsidwe ntchito. Mtundu wapomwepo uli ndi mapulogalamu ambiri. Itha kugwiritsidwa ntchito mu putty ufa ndi matope, komanso guluu wamadzimadzi ndi utoto, popanda zotsutsana.
3. Kodi njira zosungunulira za hydroxypropyl methylcellulose (HPMC) ndi ziti?
——Yankho: Njira yosungunula madzi otentha: Popeza HPMC simasungunuka m’madzi otentha, HPMC imatha kumwazikana mofanana m’madzi otentha poyambira, kenako n’kusungunuka mwamsanga ikazizira. 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 zaufa, sakanizani bwino ndi chosakanizira, kenaka yikani madzi kuti asungunuke, ndiye HPMC ikhoza kusungunuka panthawiyi popanda agglomeration, chifukwa pali HPMC pang'ono pang'onoting'ono iliyonse. Ufa wapakona, udzasungunuka nthawi yomweyo ukakumana 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?
——Yankho: (1) Kuyera: Ngakhale kuyera sikungadziwe ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati zopangira zoyera zikuwonjezeredwa panthawi yopanga, zimakhudza ubwino wake. Komabe, zinthu zambiri zabwino zimakhala ndi zoyera zabwino. (2) Fineness: Ubwino wa HPMC nthawi zambiri umakhala ndi mauna 80 ndi mauna 100, mauna 120 amakhala ochepa, ndipo ma HPMC ambiri opangidwa ku Hebei ndi ma mesh 80, ndipo kung'ambika bwino, nthawi zambiri kumakhala bwino. (3) Kupatsirana kwa kuwala: ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti mupange colloid yowonekera, ndikuwona kufalikira 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 la ofukula riyakitala ndi bwino kuposa ya yopingasa riyakitala, ndipo pali zinthu zambiri kudziwa khalidwe mankhwala. . (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 kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) ndi chiyani?
——Yankho: Ufa wa putty nthawi zambiri umakhala 100,000 yuan, ndipo zofunika pamatope ndi apamwamba, ndipo 150,000 yuan amafunikira kuti agwiritse 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.
6. Kodi zizindikiro zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?
——Yankho: Zomwe zili ndi Hydroxypropyl ndi kukhuthala, ogwiritsa ntchito ambiri amakhudzidwa ndi zizindikiro ziwirizi. Amene ali ndi hydroxypropyl yambiri amakhala ndi madzi osungira bwino. Yemwe ali ndi kukhuthala kwakukulu amakhala ndi madzi osungira bwino, (osati mwamtheradi), ndipo yomwe ili ndi kukhuthala kwakukulu imagwiritsidwa ntchito bwino mumatope a simenti.
7. Kodi zida zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?
—— Yankho: Zida zazikulu za hydroxypropyl methylcellulose (HPMC): thonje woyengedwa, methyl chloride, propylene oxide, ndi zina zopangira, caustic koloko, asidi, toluene, isopropanol, ndi zina.
8. Kodi ntchito yaikulu yogwiritsira ntchito HPMC mu putty powder ndi yotani, ndipo imachitika ndi mankhwala?
——Yankho: 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. HPMC satenga nawo gawo pazosintha zilizonse zamakina, koma imagwira ntchito yothandiza. 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 Ash calcium ili m'madzi ndi mpweya Pansi pa zochita za CO2, calcium carbonate imapangidwa, pamene HPMC imangosunga madzi, kuthandizira bwino phulusa la calcium, ndipo silitenga nawo mbali pazochita zilizonse zokha.
9. HPMC ndi non-ionic cellulose ether, ndiye chiyani chomwe si-ionic?
——Yankho: M’mawu a anthu wamba, si ayoni ndi zinthu zomwe sizimayanika 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.
10. Kodi kutentha kwa gelisi ya hydroxypropyl methylcellulose kumakhudzana bwanji?
——Yankho: Kutentha kwa gel wa HPMC kumagwirizana ndi zomwe zili mu methoxy. Kutsika kwa methoxy content↓, kumapangitsanso kutentha kwa gel.
11. Kodi pali ubale uliwonse pakati pa dontho la putty powder ndi HPMC?
——Yankho: 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.
12. Kodi pali kusiyana kotani pakati pa madzi ozizira nthawi yomweyo ndi mtundu wosungunuka wa hydroxypropyl methylcellulose popanga?
——Yankho: Mtundu wanthawi yomweyo wamadzi ozizira wa HPMC umayikidwa pamwamba ndi glyoxal, ndipo umabalalika mwachangu 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.
13. Kodi fungo la hydroxypropyl methylcellulose (HPMC) ndi chiyani?
——Yankho: HPMC yopangidwa ndi njira yosungunulira imagwiritsa ntchito toluene ndi isopropanol monga zosungunulira. Ngati kusamba sikuli bwino, padzakhala fungo lotsalira.
14. Kodi mungasankhire bwanji hydroxypropyl methylcellulose (HPMC) pazifukwa zosiyanasiyana?
——Yankho: Kugwiritsa ntchito ufa wa putty: zofunikira ndizochepa, ndipo kukhuthala kwake ndi 100,000, zomwe ndi zokwanira. Chofunika ndi kusunga madzi bwino. Kugwiritsa ntchito matope: zofunikira zapamwamba, kukhuthala kwakukulu, 150,000 ndizabwinoko. Kugwiritsa ntchito guluu: zinthu pompopompo zokhala ndi kukhuthala kwakukulu zimafunikira.
15. Kodi dzina lina la hydroxypropyl methylcellulose ndi chiyani?
——Yankho: Hydroxypropyl Methyl Cellulose, English: Hydroxypropyl Methyl Cellulose Chidule cha HPMC kapena MHPC Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.
16. Kugwiritsa ntchito HPMC mu putty powder, chifukwa chiyani mavuvu mu putty powder ndi chiyani?
——Yankho: Mu putty powder, HPMC imagwira ntchito zitatu zokulitsa, kusunga madzi ndi kumanga. Osatenga nawo mbali pazokambirana zilizonse. Zifukwa za thovu: 1. Ikani madzi ambiri. 2. Chosanjikiza chapansi sichimauma, ingochotsani china pamwamba, ndipo ndichosavuta kutulutsa thovu.
17. Kodi pali kusiyana kotani pakati pa HPMC ndi MC?
——Yankho: MC ndi methyl cellulose, yomwe imapangidwa ndi cellulose ether pochiritsa thonje woyengedwa ndi alkali, kugwiritsa ntchito methane chloride ngati etherification agent, ndikudutsamo zingapo. Nthawi zambiri, kuchuluka kwa m'malo ndi 1.6 ~ 2.0, ndipo kusungunuka kwake kumasiyananso ndi magawo osiyanasiyana olowa m'malo. Ndi ya non-ionic cellulose ether.
(1) Kusungidwa kwa madzi kwa methyl cellulose kumadalira kuchuluka kwake, kukhuthala, kukongola kwa tinthu ndi kuchuluka kwa kusungunuka. Nthawi zambiri, ngati kuchuluka kwake kuli kwakukulu, fineness ndi yaying'ono, ndipo mamasukidwe ake ndiakuluakulu, kuchuluka kwa kusunga madzi kumakhala kwakukulu. Pakati pawo, kuchuluka kwa kuwonjezera kumakhudza kwambiri kuchuluka kwa kusungirako madzi, ndipo msinkhu wa viscosity suli wofanana mwachindunji ndi mlingo wa kusunga madzi. The Kusungunuka mlingo makamaka zimadalira mlingo wa padziko kusinthidwa kwa mapadi particles ndi tinthu fineness. Pakati pa ma cellulose ethers omwe ali pamwambawa, methyl cellulose ndi hydroxypropyl methyl cellulose ali ndi milingo yayikulu yosungira madzi.
(2) Methylcellulose imasungunuka m'madzi ozizira, ndipo zimakhala zovuta kusungunuka m'madzi otentha. Njira yake yamadzimadzi imakhala yokhazikika pa pH = 3 ~ 12. Iwo ali ngakhale bwino ndi wowuma, guar chingamu, etc. ndi surfactants ambiri. Pamene kutentha kufika kutentha kwa gelation, gelation imachitika.
(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa madzi osungira madzi a methyl cellulose. Nthawi zambiri, kutentha kumapangitsa kuti madzi asamasungidwe kwambiri. Ngati kutentha kwa matope kupitirira 40 ° C, kusungirako madzi kwa methyl cellulose kudzachepetsedwa kwambiri, zomwe zimakhudza kwambiri kupanga matope.
(4) Methyl cellulose imakhudza kwambiri pomanga ndi kumamatira matope. “Kumatira” pano kukutanthauza 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. Methyl cellulose adhesion ali pamlingo wocheperako muzinthu za cellulose ether.
HPMC ndi hydroxypropyl methylcellulose, amene si aionic mapadi wosanganiza efa wopangidwa kuchokera thonje woyengeka pambuyo alkalization, ntchito propylene okusayidi ndi methyl kolorayidi monga etherification wothandizira, ndi kudzera angapo zochita. Mlingo wolowa m'malo nthawi zambiri ndi 1.2 ~ 2.0. Katundu wake ndi wosiyana chifukwa cha kuchuluka kwa methoxyl ndi hydroxypropyl.
(1) Hydroxypropyl methylcellulose imasungunuka mosavuta m'madzi ozizira, ndipo imakumana ndi zovuta pakusungunuka m'madzi otentha. Koma kutentha kwake kwa gelation m'madzi otentha ndikokwera kwambiri kuposa kwa methyl cellulose. Kusungunuka m'madzi ozizira kumakhalanso bwino kwambiri poyerekeza ndi methyl cellulose.
(2) Kukhuthala kwa hydroxypropyl methylcellulose kumakhudzana ndi kulemera kwake kwa mamolekyulu, ndipo kukula kwake kwa molekyulu kumapangitsa kukhuthala kwamphamvu. Kutentha kumakhudzanso kukhuthala kwake, pamene kutentha kumawonjezeka, kukhuthala kumachepa. Komabe, kukhuthala kwake kwakukulu kumakhala ndi kutentha kochepa kuposa methyl cellulose. Yankho lake ndi lokhazikika likasungidwa kutentha.
(3) Hydroxypropyl methylcellulose ndi yokhazikika ku asidi ndi alkali, ndipo njira yake yamadzimadzi imakhala yokhazikika pa pH = 2 ~ 12. Madzi a caustic ndi laimu sakhala ndi zotsatira zochepa pa ntchito yake, koma alkali amatha kufulumizitsa kusungunuka kwake ndikuwonjezera kukhuthala kwake. Hydroxypropyl methylcellulose ndi yokhazikika ku mchere wamba, koma pamene mchere wa mchere uli wambiri, kukhuthala kwa hydroxypropyl methylcellulose solution kumawonjezeka.
(4) Kusungirako madzi kwa hydroxypropyl methylcellulose kumadalira kuchuluka kwake, kukhuthala kwake, ndi zina zambiri, komanso kuchuluka kwake komwe kumasungira madzi pansi pa kuchuluka komweko kumaposa kuchuluka kwa methyl cellulose.
(5) Hydroxypropyl methylcellulose akhoza kusakaniza ndi madzi sungunuka polima mankhwala kupanga yunifolomu ndi apamwamba mamasukidwe akayendedwe njira. Monga polyvinyl mowa, wowuma ether, masamba chingamu, etc.
(6) Kumamatira kwa hydroxypropyl methylcellulose pakupanga matope ndikokwera kuposa methylcellulose.
(7) Hydroxypropyl methylcellulose imakhala ndi kukana bwino kwa enzyme kuposa methylcellulose, ndipo yankho lake silingawonongeke ndi michere kuposa methylcellulose.
18. Kodi tiyenera kulabadira chiyani pakugwiritsa ntchito kwenikweni ubale pakati pa mamasukidwe akayendedwe ndi kutentha kwa HPMC?
——Yankho: The mamasukidwe akayendedwe a HPMC ndi inversely molingana ndi kutentha, ndiko kunena, mamasukidwe akayendedwe amawonjezeka pamene kutentha amachepetsa. Kukhuthala kwa chinthu chomwe timakonda kunena kumatanthawuza zotsatira za mayeso a 2% yankho lamadzi pa kutentha kwa madigiri 20 Celsius.
Muzochita zothandiza, ziyenera kuzindikiridwa kuti m'madera omwe ali ndi kusiyana kwakukulu kwa kutentha pakati pa chilimwe ndi chisanu, tikulimbikitsidwa kugwiritsa ntchito kukhuthala kochepa kwambiri m'nyengo yozizira, yomwe imakhala yabwino kwambiri pomanga. Apo ayi, kutentha kukakhala kochepa, kukhuthala kwa cellulose kumawonjezeka, ndipo dzanja limakhala lolemera pamene likukanda.
Kukhuthala kwapakatikati: 75000-100000 Amagwiritsidwa ntchito makamaka pa putty.
Chifukwa: kusunga bwino madzi.
Mkulu mamasukidwe akayendedwe: 150000-200000 Makamaka ntchito polystyrene tinthu matenthedwe kutchinjiriza matope matope ufa ndi vitrified microbead matenthedwe kutchinjiriza matope.
Chifukwa: kukhuthala kwakukulu, matope sikophweka kugwa, kupachika, ndi kukonza zomangamanga.
Koma nthawi zambiri, kukwezeka kwa mamachulukidwe kumapangitsa kuti madzi asungidwe bwino. Choncho, poganizira mtengo, ambiri youma ufa matope mafakitale m'malo sing'anga ndi otsika mamasukidwe akayendedwe mapadi mapadi (20000-40000) ndi sing'anga mamasukidwe akayendedwe mapadi (20000-40000) kuchepetsa kuchuluka kwa Kuwonjezera. .
Nthawi yotumiza: Nov-21-2022