Hydroxypropyl methylcellulosendi mamasukidwe akayendedwe a 100,000 nthawi zambiri amakhala okwanira mu ufa wa putty, pomwe matope amakhala ndi kufunikira kokulirapo kwa mamasukidwe akayendedwe, kotero mamasukidwe a 150,000 ayenera kusankhidwa kuti agwiritse ntchito bwino. Ntchito yofunika kwambiri yahydroxypropyl methylcellulosendi kusunga madzi, kenako thickening. Choncho, mu ufa wa putty, malinga ngati kusungidwa kwa madzi kumatheka, kutsekemera kwapansi kumaloledwanso. Nthawi zambiri, kukhathamira kwamphamvu kumapangitsa kuti madzi asungidwe bwino, koma kukhuthala kukapitilira 100,000, zotsatira za mamasukidwe akayendedwe pakusunga madzi sizofunikira.
Hydroxypropyl methylcelluloseNthawi zambiri amagawidwa m'magulu otsatirawa malinga ndi mamasukidwe akayendedwe:
1. Low mamasukidwe akayendedwe: 400 mamasukidwe akayendedwe mapadi mapadi, makamaka ntchito kudziletsa-leveling matope.
Low mamasukidwe akayendedwe, fluidity wabwino, pambuyo kuwonjezera izo zidzalamulira pamwamba madzi kusunga, madzi seepage si zoonekeratu, shrinkage ndi yaying'ono, ang'onoang'ono ang'onoang'ono amachepetsa, ndipo akhoza kukana sedimentation, kuonjezera fluidity ndi pumpability.
2. Kukhuthala kwapakatikati: 20,000-50,000 viscosity cellulose, yomwe imagwiritsidwa ntchito kwambiri pazinthu za gypsum ndi caulking agents.
Low mamasukidwe akayendedwe, kusungirako madzi, ntchito yomanga bwino, kuchepetsa madzi kuwonjezera.
3. Kukhuthala kwapakatikati: 75,000-100,000 viscosity cellulose, yomwe imagwiritsidwa ntchito makamaka mkati ndi kunja kwa khoma putty.
Kukhuthala pang'ono, kusungidwa bwino kwa madzi, zomangamanga zabwino komanso zopachikika
4. High mamasukidwe akayendedwe: 150,000-200,000, makamaka ntchito polystyrene tinthu kutchinjiriza matope matope ufa ndi vitrified yaying'ono-mkanda kutchinjiriza matope matope. Kuthamanga kwakukulu, kusungirako madzi ambiri, matope sikophweka kugwa, kuyenda, kukonza zomangamanga.
Nthawi zambiri, kukhathamira kwamphamvu kumapangitsa kuti madzi asungidwe bwino. Choncho, makasitomala ambiri adzasankha kugwiritsa ntchito mapaipi apakati-makamaka (75,000-100,000) m'malo mwa sing'anga-otsika mamasukidwe a cellulose (20,000-50,000) kuti achepetse ndalama zomwe zawonjezeredwa ndikuwongolera ndalama.
Hydroxypropyl methylcellulose (HPMC)ndi polima ya semisynthetic yomwe imagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikiza zomangamanga, zamankhwala, ndi kupanga chakudya. Kukhuthala kwa HPMC ndi chinthu chofunikira chomwe chimatsimikizira magwiridwe antchito osiyanasiyana.
Kukhuthala kwa HPMC kumakhudzidwa ndi zinthu monga kuchuluka kwa m'malo (DS), kulemera kwa mamolekyulu, komanso ndende ya yankho la HPMC. Nthawi zambiri, momwe kuchuluka kwa m'malo ndi kulemera kwa maselo a HPMC kumawonjezeka, momwemonso kukhuthala kwake.
HPMC imapezeka m'magiredi angapo a viscosity, omwe amayezedwa motengera "kulemera kwa molekyulu" kapena "methoxyl content." The mamasukidwe akayendedwe a HPMC akhoza kusinthidwa posankha kalasi yoyenera kapena kusintha ndende ya HPMC yankho.
Pazomangamanga, HPMC yokhala ndi mamasukidwe apamwamba nthawi zambiri imagwiritsidwa ntchito kukonza magwiridwe antchito komanso kusunga madzi pazinthu zopangira simenti. Muzamankhwala, kukhuthala ndi chinthu chofunikira kwambiri pakuwongolera kuchuluka kwa zinthu zomwe zimagwira ntchito pamapangidwe amankhwala.
Chifukwa chake, kumvetsetsa makulidwe a hydroxypropyl methylcellulose ndikofunikira pakusankha giredi yoyenera pakugwiritsa ntchito mwapadera ndikuwonetsetsa zomwe mukufuna kuchita.
Nthawi yotumiza: May-30-2024