Kodi njira zosungunula za hydroxypropyl methylcellulose HPMC ndi ziti?

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

Yankho: Njira yosungunula madzi otentha: Popeza HPMC siisungunuka m'madzi otentha, HPMC imatha kusungunuka mofanana m'madzi otentha poyamba, kenako n’kusungunuka mofulumira ikazizira. Njira ziwiri zodziwika bwino zafotokozedwa motere:

1), onjezerani 1/3 kapena 2/3 ya madzi ofunikira mu chidebecho, ndikutenthetsa mpaka 70°C, falitsani HPMC motsatira njira ya 1), ndikukonza slurry ya madzi otentha; kenako onjezerani madzi ozizira otsalawo ku slurry ya madzi otentha, chisakanizocho chinaziziritsidwa mutasakaniza.

Njira yosakanizira ufa: Sakanizani ufa wa HPMC ndi zinthu zina zambiri za ufa, sakanizani bwino ndi chosakanizira, kenako onjezerani madzi kuti asungunuke, kenako HPMC ikhoza kusungunuka panthawiyi popanda kusonkhana, chifukwa pali HPMC yochepa chabe mu ngodya iliyonse yaying'ono ya Ufa, yomwe imasungunuka nthawi yomweyo ikakhudzana ndi madzi. ——Opanga ufa wa Putty ndi matope akugwiritsa ntchito njira iyi. [Hydroxypropyl methylcellulose (HPMC) imagwiritsidwa ntchito ngati chokhuthala komanso chosungira madzi mu matope a Putty powder.

2) Ikani madzi otentha okwanira mu chidebecho ndikutenthetsa mpaka pafupifupi 70°C. Hydroxypropyl methylcellulose inawonjezedwa pang'onopang'ono mukasakaniza pang'onopang'ono, poyamba HPMC inkayandama pamwamba pa madzi, kenako pang'onopang'ono imapanga matope, omwe anaziziritsidwa mukasakaniza.

2. Pali mitundu ingapo ya hydroxypropyl methylcellulose HPMC. Kodi kusiyana kwake ndi kotani?

Yankho: Hydroxypropyl methylcellulose HPMC ikhoza kugawidwa m'magulu awiri: mtundu wa instant ndi mtundu wa hot-solving. Zinthu za instant type zimafalikira mofulumira m'madzi ozizira ndipo zimasowa m'madzi. Panthawiyi, madziwo alibe kukhuthala, chifukwa HPMC imafalikira m'madzi okha, palibe kusungunuka kwenikweni. Pafupifupi mphindi ziwiri, kukhuthala kwa madziwo kumawonjezeka pang'onopang'ono, ndikupanga colloid yowonekera bwino. Zinthu zosungunuka ndi madzi ozizira, zikakumana ndi madzi ozizira, zimatha kufalikira mwachangu m'madzi otentha ndikusowa m'madzi otentha. Kutentha kukatsika kufika kutentha kwina, kukhuthala kudzawonekera pang'onopang'ono mpaka zitapanga colloid yowonekera bwino. Mtundu wa hot-melt ungagwiritsidwe ntchito mu ufa wa putty ndi matope okha. Mu guluu wamadzimadzi ndi utoto, padzakhala zochitika zamagulu ndipo sizingagwiritsidwe ntchito. Mtundu wa instant uli ndi ntchito zambiri. Ungagwiritsidwe ntchito mu ufa wa putty ndi matope, komanso guluu wamadzimadzi ndi utoto, popanda zotsutsana zilizonse.

3. Kodi ntchito yaikulu ya hydroxypropyl methylcellulose (HPMC) ndi yotani?

Yankho: HPMC imagwiritsidwa ntchito kwambiri pa zipangizo zomangira, zokutira, ma resini opangidwa, zinthu zomangira, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC ikhoza kugawidwa m'magulu awa: kalasi yomanga, kalasi ya chakudya ndi kalasi ya mankhwala malinga ndi kagwiritsidwe ntchito. Pakadali pano, zinthu zambiri zapakhomo ndi kalasi yomanga. Mu kalasi yomanga, ufa wa putty umagwiritsidwa ntchito kwambiri, pafupifupi 90% imagwiritsidwa ntchito pa ufa wa putty, ndipo wotsalawo amagwiritsidwa ntchito pa simenti ndi guluu.

4. Kodi mungaweruze bwanji ubwino wa hydroxypropyl methylcellulose (HPMC) mosavuta komanso mwachilengedwe?

Yankho: (1) Mphamvu yokoka: Mphamvu yokoka ikakhala yayikulu, kulemera kwake kumakhala bwino. Chiŵerengerocho chimakhala chachikulu, makamaka chifukwa

(2) Kuyera: Ngakhale kuti kuyera sikungathe kudziwa ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati zinthu zoyera ziwonjezedwa panthawi yopanga, zidzakhudza ubwino wake. Komabe, zinthu zambiri zabwino zimakhala ndi kuyera kwabwino.

(3) Kusalala: Kusalala kwa HPMC nthawi zambiri kumakhala ndi maukonde 80 ndi maukonde 100, ndipo maukonde 120 ndi ochepa. HPMC yambiri yopangidwa ku Hebei ndi maukonde 80. Kusalala kwambiri kumakhala bwino nthawi zambiri.

(4) Kutumiza kuwala: ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti ipange colloid yowonekera, ndikuyang'ana momwe kuwala kwake kumayendera. Kutumiza kuwala kukakhala kwakukulu, kumakhala bwino, zomwe zikusonyeza kuti mulibe zinthu zambiri zosasungunuka. . Kulowa kwa vertical reactor nthawi zambiri kumakhala bwino, ndipo kwa horizontal reactor kumakhala koipa, koma sizikutanthauza kuti vertical reactor ndi yabwino kuposa ya horizontal reactor, ndipo pali zinthu zambiri zomwe zimatsimikizira mtundu wa chinthucho. Muli hydroxypropyl group yomwe ilimo muli zambiri, ndipo muli hydroxypropyl group yambiri, ndipo kusunga madzi kuli bwino.

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

Yankho: Chifukwa cha kuchuluka kwa hydroxypropyl ndi kukhuthala, ogwiritsa ntchito ambiri akuda nkhawa ndi zizindikiro ziwirizi. Anthu omwe ali ndi hydroxypropyl yambiri nthawi zambiri amakhala ndi madzi abwino. Kukhuthala kwakukulu, kusunga madzi, (m'malo mogwiritsa ntchito

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

Yankho: Ufa wa putty nthawi zambiri umakhala wa yuan 100,000, ndipo zofunikira pa matope ndi zapamwamba, ndipo ndizosavuta kugwiritsa ntchito ma yuan 150,000. Komanso, ntchito yofunika kwambiri ya HPMC ndikusunga madzi, kutsatiridwa ndi kukhuthala. Mu ufa wa putty, bola ngati kusunga madzi kuli bwino ndipo kukhuthala kuli kochepa (70,000-80,000), n'zothekanso. Zachidziwikire, kukhuthala kwakukulu, kukhuthala kwa madzi kumakhala bwino. Kukhuthala kukapitirira 100,000, kukhuthala kudzakhudza kusunga madzi. Sizilinso zambiri. Ndithudi) ndikwabwinonso, ndipo kukhuthala kumakhala kwakukulu, ndipo ndikwabwino kugwiritsa ntchito mu matope a simenti.

7. Kodi zinthu zazikulu zopangira hydroxypropyl methylcellulose (HPMC) ndi ziti?

Yankho: Zipangizo zazikulu zopangira hydroxypropyl methylcellulose (HPMC): thonje loyengedwa, methyl chloride, propylene oxide, ndi zipangizo zina zopangira, caustic soda, acid, toluene, isopropanol, ndi zina zotero.

8. Kodi ntchito yaikulu ya HPMC mu ufa wa putty ndi yotani, ndipo kodi imachitika ndi mankhwala?

Yankho: Mu ufa wa putty, HPMC imagwira ntchito zitatu monga kukhuthala, kusunga madzi ndi kumanga. Kukhuthala: Cellulose imatha kukhuthala kuti iimike ndikusunga yankholo mofanana mmwamba ndi pansi, ndikupewa kutsika. Kusunga madzi: kumapangitsa ufa wa putty kuumitsa pang'onopang'ono, ndikuthandiza phulusa la calcium kuchitapo kanthu pansi pa madzi. Kapangidwe: Cellulose imakhala ndi mafuta odzola, zomwe zingapangitse ufa wa putty kukhala ndi kapangidwe kabwino. HPMC sichita nawo machitidwe aliwonse a mankhwala, koma imangokhala ndi gawo lothandizira. Kuwonjezera madzi ku ufa wa putty ndikuyika pakhoma ndi njira ya mankhwala, chifukwa zinthu zatsopano zimapangidwa. Ngati mutachotsa ufa wa putty pakhoma kuchokera pakhoma, ndikuupera kukhala ufa, ndikuugwiritsanso ntchito, sizigwira ntchito chifukwa zinthu zatsopano (calcium carbonate) zapangidwanso. ) Zigawo zazikulu za ufa wa calcium wa phulusa ndi izi: chisakanizo cha Ca(OH)2, CaO ndi CaCO3 yochepa, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Kalisiamu wa phulusa ali m'madzi ndi mumlengalenga Pansi pa mphamvu ya CO2, calcium carbonate imapangidwa, pomwe HPMC imasunga madzi okha, zomwe zimathandiza kuti calcium ya phulusa igwire bwino ntchito, ndipo sichita nawo chilichonse chomwe chimachitika.

9. HPMC ndi ether ya cellulose yosakhala ionic, ndiye kodi si ionic ndi chiyani?

Yankho: M'mawu a anthu wamba, non-ion ndi chinthu chomwe sichingapange ioni m'madzi. Ionization imatanthauza njira yomwe electrolyte imagawikana kukhala ma ayoni omwe ali ndi mphamvu zomwe zimatha kuyenda momasuka mu solvent inayake (monga madzi, mowa). Mwachitsanzo, sodium chloride (NaCl), mchere womwe timadya tsiku lililonse, umasungunuka m'madzi ndipo umapanga ma ayoni osunthika mosavuta (Na+) omwe ali ndi mphamvu zabwino komanso ma ayoni a chloride (Cl) omwe ali ndi mphamvu zoyipa. Izi zikutanthauza kuti, HPMC ikayikidwa m'madzi, sidzasintha kukhala ma ayoni omwe ali ndi mphamvu, koma imakhalapo mu mawonekedwe a mamolekyu.

10. Kodi pali ubale uliwonse pakati pa dontho la ufa wa putty ndi HPMC?

Yankho: Kutayika kwa ufa wa putty kumakhudzana kwambiri ndi ubwino wa calcium ya phulusa, ndipo sikukhudzana kwenikweni ndi HPMC. Kuchepa kwa calcium ya imvi ndi chiŵerengero chosayenerera cha CaO ndi Ca(OH)2 mu calcium ya imvi kungayambitse kutayika kwa ufa. Ngati ikukhudzana ndi HPMC, ndiye kuti ngati HPMC ili ndi madzi ochepa, ingayambitsenso kutayika kwa ufa.

11. Kodi kutentha kwa gel kwa hydroxypropyl methylcellulose kumakhudzana bwanji ndi?

Yankho: Kutentha kwa gel ya HPMC kumagwirizana ndi kuchuluka kwa methoxy komwe kuli, kuchuluka kwa methoxy komwe kuli kotsika↓, kutentha kwa gel kumakhala kwakukulu.

12. Kodi mungasankhe bwanji hydroxypropyl methylcellulose (HPMC) yoyenera pazifukwa zosiyanasiyana?

Yankho: Kugwiritsa ntchito ufa wa putty: zofunikira zake ndizochepa, ndipo kukhuthala kwake ndi 100,000, zomwe ndizokwanira. Chofunika ndikusunga madzi bwino. Kugwiritsa ntchito matope: zofunikira kwambiri, kukhuthala kwake ndi 150,000 n'kwabwino. Kugwiritsa ntchito guluu: zinthu zomwe zimagwira ntchito mwachangu komanso zokhuthala kwambiri zimafunika.

13. Kodi pali kusiyana kotani pakati pa mtundu wa hydroxypropyl methylcellulose wosungunuka ndi mtundu wa hydroxypropyl methylcellulose womwe umasungunuka kwambiri popanga zinthu?

Yankho: Mtundu wa HPMC wa madzi ozizira nthawi yomweyo umathiridwa ndi glyoxal pamwamba, ndipo umafalikira mofulumira m'madzi ozizira, koma susungunuka kwenikweni. Umasungunuka kokha pamene kukhuthala kwa madzi kukukwera. Mitundu yosungunuka yotentha siithiridwa ndi glyoxal pamwamba. Ngati kuchuluka kwa glyoxal kuli kwakukulu, kufalikira kwa madzi kudzakhala kofulumira, koma kukhuthala kudzawonjezeka pang'onopang'ono, ndipo ngati kuchuluka kuli kochepa, zosiyana ndi zimenezo zidzakhala zoona.

14. Kodi fungo la hydroxypropyl methylcellulose (HPMC) ndi lotani?

Yankho: HPMC yopangidwa ndi njira yosungunulira imagwiritsa ntchito toluene ndi isopropanol ngati zosungunulira. Ngati kutsuka sikuli bwino kwambiri, padzakhala fungo lotsalira.

15. Kodi dzina lina la hydroxypropyl methylcellulose ndi liti?

Yankho: Hydroxypropyl Methyl Cellulose, Chingerezi: Hydroxypropyl Methyl Cellulose Chidule: HPMC kapena MHPC Dzina lina: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.

16. Kodi ndi chiyani chomwe chiyenera kuganiziridwa pakugwiritsa ntchito kwenikweni ubale pakati pa kukhuthala ndi kutentha kwa HPMC?

Yankho: Kukhuthala kwa HPMC kumagwirizana ndi kutentha, kutanthauza kuti kukhuthala kumawonjezeka pamene kutentha kukuchepa. Kukhuthala kwa chinthu chomwe nthawi zambiri timatchula chimatanthauza zotsatira za mayeso a yankho lake la madzi la 2% pa kutentha kwa madigiri 20 Celsius.

Mu ntchito zenizeni, ziyenera kudziwika kuti m'madera omwe kutentha kwake kuli kosiyana kwambiri pakati pa chilimwe ndi nyengo yozizira, tikulimbikitsidwa kugwiritsa ntchito kukhuthala kochepa nthawi yozizira, komwe kumakhala kothandiza kwambiri pakupanga. Kupanda kutero, kutentha kukakhala kochepa, kukhuthala kwa cellulose kudzawonjezeka, ndipo kukhudza kwa dzanja kudzakhala kolemera pokanda. Kukhuthala kwapakati: 75000-100000 Amagwiritsidwa ntchito makamaka pa putty. Chifukwa: kusunga bwino madzi. Kukhuthala kwakukulu: 150000-200000 Amagwiritsidwa ntchito makamaka pa polystyrene particles thermal insulation mortar glue powder ndi vitrified microbead thermal insulation mortar. Chifukwa: kukhuthala kwakukulu, matope si osavuta kugwetsa, kupachika, ndikuwongolera kapangidwe kake.

17. Kodi kugwiritsa ntchito HPMC mu ufa wa putty, chifukwa chake ma thovu mu ufa wa putty ndi chiyani?

Yankho: Mu ufa wa putty, HPMC imagwira ntchito zitatu monga kukhuthala, kusunga madzi ndi kupanga. Musachite nawo chilichonse. Zifukwa za thovu: 1. Ikani madzi ambiri. 2. Gawo la pansi silili louma, ingokandani gawo lina pamwamba, ndipo n'zosavuta kupatsa thovu.