Kukhuthala kochepa kwa HPMC:HPMC 400 kumagwiritsidwa ntchito makamaka popangira matope odziyimira pawokha, koma nthawi zambiri amalowetsedwa kunja.
Chifukwa: Kukhuthala kwake kuli kochepa, ngakhale kuti madzi sasungidwa bwino, koma kupendekeka kwake kuli bwino, ndipo kuchuluka kwa matope ndi kwakukulu.
Kukhuthala kwapakati ndi kotsika:hydroxypropyl methylcelluloseHPMC 20000-40000 imagwiritsidwa ntchito makamaka pa zomatira za matailosi, chothandizira kuphimba, matope oletsa kusweka, matope oteteza kutentha, ndi zina zotero.
Chifukwa: kugwira ntchito bwino, kuwonjezera madzi pang'ono, kukhuthala kwa matope ambiri.
1. Kodi cholinga chachikulu cha hydroxypropyl methylcellulose (HPMC) n'chiyani?
——A: HPMC imagwiritsidwa ntchito kwambiri pa zipangizo zomangira, zokutira, ma resini opangidwa, zinthu zadothi, 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 cholinga chake. Pakadali pano, zinthu zambiri zapakhomo ndi kalasi yomanga. Mu kalasi yomanga, kuchuluka kwa ufa wa putty ndi kwakukulu kwambiri, pafupifupi 90% imagwiritsidwa ntchito pa ufa wa putty, ndipo yotsalayo imagwiritsidwa ntchito pa simenti ndi guluu.
2. Pali mitundu ingapo ya hydroxypropyl methylcellulose (HPMC), ndipo kusiyana kwake ndi kotani?
——Yankho: HPMC ingagawidwe m'magulu awiri: mtundu wa instant type ndi mtundu wa hot melt. Zinthu za instant type zimafalikira mofulumira m'madzi ozizira ndipo zimasowa m'madzi. Panthawiyi, madziwo alibe kukhuthala, chifukwa HPMC imangofalikira m'madzi ndipo siisungunuka kwenikweni. Patatha mphindi ziwiri, kukhuthala kwa madziwo kunawonjezeka pang'onopang'ono, ndikupanga colloid yowonekera bwino. Zinthu zosungunuka ndi kutentha, zikakumana ndi madzi ozizira, zimatha kufalikira mwachangu m'madzi otentha, ndikuzimiririka m'madzi otentha. Kutentha kukatsika kufika kutentha kwina (chogulitsa cha kampani yathu ndi madigiri 65 Celsius), kukhuthala kumawonekera pang'onopang'ono mpaka kupanga colloid yowonekera bwino. Mtundu wa hot melt ungagwiritsidwe ntchito mu ufa wa putty ndi matope okha. Mu guluu wamadzimadzi ndi utoto, chodabwitsa cha clumping chidzachitika ndipo sichingagwiritsidwe ntchito. Mtundu wa instant uli ndi ntchito zambiri. Ungagwiritsidwe ntchito mu ufa wa putty ndi matope, komanso mu guluu wamadzimadzi ndi utoto, popanda zotsutsana zilizonse.
3. 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) Ikani madzi otentha okwanira mu chidebecho ndikutenthetsa mpaka pafupifupi 70°C. Hydroxypropyl methylcellulose inawonjezedwa pang'onopang'ono ndikusakaniza pang'onopang'ono, poyamba HPMC inayandama pamwamba pa madzi, kenako pang'onopang'ono inapanga matope, omwe anaziziritsidwa ndi kusakaniza.
2), onjezerani 1/3 kapena 2/3 ya kuchuluka kwa madzi ofunikira mu chidebecho, ndikutenthetsa mpaka 70 ° C, malinga ndi njira ya 1), falitsani HPMC, konzani slurry ya madzi otentha; kenako onjezerani madzi ozizira otsalawo ku madzi otentha. Mu slurry, 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 kuphatikizika, chifukwa pali HPMC yochepa chabe pakona iliyonse yaying'ono. Ufawo udzasungunuka nthawi yomweyo ukakhudzana ndi madzi. ——Njira iyi imagwiritsidwa ntchito ndi opanga ufa wa putty ndi mortar. [Hydroxypropyl methylcellulose (HPMC) imagwiritsidwa ntchito ngati chokhuthala komanso chosungira madzi mu mortar ya putty powder.]
4. Kodi mungaweruze bwanji ubwino wa hydroxypropyl methylcellulose (HPMC) mosavuta komanso mwachilengedwe?
——Yankho: (1) Kuyera: Ngakhale kuyera sikungadziwike ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati chowunikira chiwonjezedwa popanga, chidzakhudza ubwino wake. Komabe, zinthu zambiri zabwino zimakhala ndi kuyera bwino. (2) Kuyera: Kuyera kwa HPMC nthawi zambiri kumakhala ma mesh 80 ndi ma mesh 100, ndipo ma mesh 120 ndi ochepa. HPMC yambiri yopangidwa ku Hebei ndi ma mesh 80. Kuyera bwino kwambiri, kumakhala bwino. (3) Kutumiza: Ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti ipange colloid yowonekera, ndikuyang'ana momwe imatumizira. Kutumiza kwakukulu, kumakhala bwino, kusonyeza kuti mulibe zinthu zochepa zosasungunuka. Kulowa kwa reactor yoyima nthawi zambiri kumakhala bwino, ndipo reactor yoyima nthawi zambiri imakhala yoipa, koma sitinganene kuti mtundu wa reactor yoyima ndi wabwino kuposa wa reactor yoyima, ndipo pali zinthu zambiri zomwe zimatsimikiza mtundu wa chinthucho. (4) Mphamvu yeniyeni: mphamvu yeniyeni ikakhala yayikulu, kulemera kwake kumakhala bwino. Mphamvu yokoka ndi yayikulu, makamaka chifukwa chakuti hydroxypropyl ili mkati mwake ndi yokwera, ndipo hydroxypropyl ili mkati mwake, kusunga madzi kumakhala bwino.
5. Kuchuluka kwa hydroxypropyl methylcellulose (HPMC) mu ufa wa putty?
——Yankho: Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito kumasiyana malinga ndi nyengo, kutentha, mtundu wa calcium wa phulusa, njira ya ufa wa putty ndi "ubwino womwe makasitomala amafunikira". Kawirikawiri, ndi pakati pa 4 kg ndi 5 kg. Mwachitsanzo, ufa wambiri wa putty ku Beijing ndi 5 kg; ufa wambiri wa putty ku Guizhou ndi 5 kg m'chilimwe ndi 4.5 kg m'nyengo yozizira;
6. Kodi kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) ndi kotani?
——Yankho: Ufa wa putty nthawi zambiri umakhala wa yuan 100,000, ndipo matopewo ndi ovuta kwambiri, ndipo ndi osavuta kugwiritsa ntchito pa yuan 150,000. Komanso, ntchito yofunika kwambiri ya HPMC ndikusunga madzi, kutsatiridwa ndi kukhuthala. Mu ufa wa putty, bola ngati madzi akusungidwa bwino ndipo kukhuthala kuli kotsika (70,000-80,000), n'zothekanso. Zachidziwikire, kukhuthala kumakhala kokwera, ndipo kukhuthala kwa madzi kumakhala bwino. Kukhuthala kukapitirira 100,000, zotsatira za kukhuthala pa kusungunuka kwa madzi sizimakhala zambiri.
7. Kodi zizindikiro zazikulu zaukadaulo za hydroxypropyl methylcellulose (HPMC) ndi ziti?
——Yankho: Kuchuluka kwa hydroxypropyl ndi kukhuthala, ogwiritsa ntchito ambiri amasamala za zizindikiro ziwirizi. Kuchuluka kwa hydroxypropyl, kumakhala bwino kusunga madzi. Kukhuthala kwakukulu, kusunga madzi, kukhala bwino (m'malo mokhala kwathunthu), komanso kukhuthala kwakukulu, kugwiritsa ntchito bwino mu simenti.
8. Kodi zinthu zazikulu zopangira hydroxypropyl methylcellulose (HPMC) ndi ziti?
—— A: Zipangizo zazikulu zopangira hydroxypropyl methylcellulose (HPMC): thonje loyengedwa, methyl chloride, propylene oxide, zipangizo zina zopangira ndi monga flake alkali, acid, toluene, isopropanol, ndi zina zotero.
9. Kodi ntchito yaikulu ya HPMC pakugwiritsa ntchito ufa wa putty ndi yotani, ndipo kodi pali mankhwala aliwonse?
——Yankho: HPMC ili ndi ntchito zitatu zokhuthala, kusunga madzi ndi kumanga ufa wa putty. Kukhuthala: Cellulose ikhoza kukhuthala kuti iimirire, kusunga yankho kukhala lofanana komanso lokhazikika, ndikupewa kugwedezeka. Kusunga madzi: Pangani ufa wa putty kuti uume pang'onopang'ono, ndikuthandizira kuyankhidwa kwa phulusa la calcium pansi pa madzi. Kapangidwe: Cellulose ili ndi mphamvu yopaka mafuta, yomwe ingapangitse ufa wa putty kukhala wogwira ntchito bwino. HPMC sichita nawo machitidwe aliwonse a mankhwala ndipo imangokhala ndi gawo lothandizira. Kuwonjezera madzi ku ufa wa putty ndikuyika pakhoma ndi njira ya mankhwala. Chifukwa cha kupangika kwa zinthu zatsopano, chotsani ufa wa putty pakhoma kuchokera pakhoma, uupere kukhala ufa, ndikugwiritsanso ntchito. Sizigwira ntchito, chifukwa zinthu zatsopano (calcium carbonate) zapangidwa. ) mmwamba. 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 m'madzi ndi mumlengalenga Pansi pa mphamvu ya CO2, calcium carbonate imapangidwa, pomwe HPMC imasunga madzi okha ndikuthandizira kuti calcium ya phulusa igwire bwino ntchito, ndipo sichita nawo chilichonse chomwe chimachitika.
10. HPMC ndi etha ya cellulose yosakhala ionic, ndiye kodi si ionic ndi chiyani?
- Yankho: M'mawu a anthu wamba, ma non-ion ndi zinthu zomwe sizipanga ioni m'madzi. Ionisation imatanthauza njira yomwe electrolyte imagawikana kukhala ma ioni oyenda momasuka mu solvent inayake (monga madzi, mowa). Mwachitsanzo, sodium chloride (NaCl), mchere womwe umadyedwa tsiku lililonse, umasungunuka m'madzi ndikupanga ionis kuti apange ma ioni a sodium oyenda momasuka (Na+) omwe ali ndi mphamvu zabwino komanso ma ioni a chloride (Cl) omwe ali ndi mphamvu zoyipa. Izi zikutanthauza kuti, HPMC ikayikidwa m'madzi, simagawikana kukhala ma ioni odzaza, koma imakhalapo mu mawonekedwe a mamolekyu.
Nthawi yotumizira: Okutobala-17-2022