Kodi njira zosungunulira za hydroxypropyl methylcellulose HPMC ndi ziti?

1. Kodi njira zosungunulira za hydroxypropyl methylcellulose HPMC ndi ziti?

Yankho: Njira yosungunula madzi otentha: Popeza HPMC sisungunuka m'madzi otentha, HPMC imatha kumwazikana m'madzi otentha pamalo oyamba, kenako imasungunuka ikakhazikika. Njira ziwiri zodziwika bwino zimafotokozedwa motere:

1), onjezerani 1/3 kapena 2/3 ya madzi ofunikira mumtsuko, ndikuwotchera mpaka 70 ° C, kumwaza HPMC molingana ndi njira ya 1), ndikukonzekera madzi otentha slurry; 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.

2) 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 inapanga slurry, yomwe inakhazikika pansi pa kugwedezeka.

2. Pali mitundu ingapo ya hydroxypropyl methylcellulose HPMC. Kodi pali kusiyana kotani pakugwiritsa ntchito kwawo?

Yankho: Hydroxypropyl methylcellulose HPMC akhoza kugawidwa mu mtundu nthawi yomweyo ndi kutentha-kusungunuka mtundu. Instant mtundu mankhwala kumwazikana mofulumira m'madzi ozizira ndi kutha m'madzi. Panthawiyi, madziwa alibe mamasukidwe akayendedwe, chifukwa HPMC amangomwazikana m'madzi, palibe kupasuka 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 hydroxypropyl methylcellulose (HPMC) amagwiritsidwa ntchito bwanji?

Yankho: 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 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.

4. Kodi mungaweruze bwanji ubwino wa hydroxypropyl methylcellulose (HPMC) mophweka komanso mwachidziwitso?

Yankho: (1) Mphamvu yokoka yeniyeni: Kuchuluka kwa mphamvu yokoka kwapadera, ndikolemera kwambiri. Chiŵerengero chake ndi chachikulu, makamaka chifukwa

(2) 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.

(3) 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 kwabwinoko, kumakhala bwinoko nthawi zambiri.

(4) Kupatsirana kwa kuwala: ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti mupange colloid yowonekera, ndikuwona kufalikira kwake. Kukwera kwa magetsi opangira kuwala, kumakhala bwino, 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. . Zomwe zili m'gulu la hydroxypropyl momwemo ndizokwera, ndipo zomwe zili mugulu la hydroxypropyl ndizokwera, komanso kusunga madzi kuli bwino.

5. Kodi zizindikiro zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?

Yankho: Zomwe zili ndi Hydroxypropyl ndi viscosity, ogwiritsa ntchito ambiri amakhudzidwa ndi zizindikiro ziwirizi. Amene ali ndi hydroxypropyl yambiri amakhala ndi madzi osungira bwino. Kukhuthala kwakukulu, kusunga madzi, pang'ono (osati

6. Kodi kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) ndi chiyani?

Yankho: Putty ufa nthawi zambiri ndi 100,000 yuan, ndipo zofunikira pamatope ndizokwera, ndipo ndizosavuta kugwiritsa ntchito yuan 150,000. 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. Mwamtheradi) ndi bwino, ndipo mamasukidwe akayendedwe ndi apamwamba, ndipo ndi bwino ntchito mu matope simenti.

7. Kodi zida zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?

Yankho: Zopangira zazikulu za hydroxypropyl methylcellulose (HPMC): thonje woyengedwa, methyl chloride, propylene oxide, ndi zina zopangira, caustic koloko, asidi, toluene, isopropanol, etc.

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 ali ndi mphamvu yopangira mafuta, zomwe zingapangitse kuti ufa wa putty ukhale 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 si-ionic?

Yankho: M'mawu a layman, non-ion ndi chinthu chomwe sichingalowe 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 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 kwambiri 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.

11. Kodi kutentha kwa gelisi ya hydroxypropyl methylcellulose kumagwirizana ndi chiyani?

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

12. 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.

13. Kodi pali kusiyana kotani pakati pa madzi ozizira nthawi yomweyo ndi mtundu wosungunuka wa hydroxypropyl methylcellulose popanga?

Yankho: Madzi ozizira nthawi yomweyo amtundu wa HPMC amathiridwa pamwamba ndi glyoxal, ndipo amabalalika 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 ndalamazo ndizochepa, zosiyana zidzakhala zoona.

14. 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.

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. 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 kuti, 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. Kupanda kutero, kutentha kukakhala kotsika, kukhuthala kwa cellulose kumawonjezeka, ndipo dzanja limamva kukhala lolemetsa pokanda. 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 kugwetsa, kupachika, ndi kukonza zomangamanga.

17. 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. Chigawo chapansi sichimauma, ingochotsani china pamwamba, ndipo ndi chosavuta kutulutsa thovu.