Mitundu yodziwika bwino ya viscosity ya HPMC pakumanga ntchito
1 Mawu Oyamba
Hydroxypropyl Methylcellulose (HPMC) ndizofunikira zomangira zowonjezera ndipo zimagwiritsidwa ntchito kwambiri pazinthu zosiyanasiyana m'makampani omangamanga, monga matope osakaniza, putty powder, zomatira matailosi, etc. HPMC ili ndi ntchito zambiri monga thickening, kusunga madzi, ndi kupititsa patsogolo ntchito yomanga. Kuchita kwake kumadalira kwambiri kukhuthala kwake. Nkhaniyi ifotokoza mwatsatanetsatane ma viscosity wamba a HPMC pamagwiritsidwe osiyanasiyana omanga komanso momwe amakhudzira ntchito yomanga.
2. Makhalidwe oyambira a HPMC
HPMC ndi non-ayoni m'madzi sungunuka mapadi efa anapezedwa ndi kusinthidwa mankhwala a chilengedwe mapadi. Ili ndi izi zodziwika bwino:
Makulidwe: HPMC imatha kukulitsa kukhuthala kwa zida zomangira ndikupereka magwiridwe antchito abwino.
Kusungirako madzi: Kutha kuchepetsa bwino kutuluka kwa madzi ndikuwongolera mphamvu ya hydration reaction ya simenti ndi gypsum.
Kupaka mafuta: Kumapangitsa kuti zinthuzo zikhale zosalala panthawi yomanga komanso zosavuta kuziyika.
Kapangidwe ka filimu: Kanema wopangidwa amakhala ndi kulimba kwabwino komanso kusinthasintha ndipo amatha kusintha mawonekedwe a zinthuzo.
3. Kugwiritsa ntchito HPMC muzomangamanga
Zomatira matailosi: Ntchito yayikulu ya HPMC pakumatira matailosi ndikukulitsa mphamvu zomangira komanso nthawi yotseguka. Kukhuthala kwa ma viscosity kumakhala pakati pa 20,000 ndi 60,000 mPa·s kuti apereke katundu wabwino wolumikizana komanso nthawi yotsegula. Mkulu mamasukidwe akayendedwe HPMC amathandiza kuonjezera kugwirizana mphamvu ya zomatira matailosi ndi kuchepetsa kutsetsereka.
Putty powder: Pakati pa putty powder, HPMC makamaka imagwira ntchito yosungira madzi, kudzoza ndi kupititsa patsogolo ntchito. Kukhuthala kwake kumakhala pakati pa 40,000 ndi 100,000 mPa·s. Kukhuthala kwakukulu kumathandizira kusunga chinyezi mu putty powder, kuwongolera nthawi yake yomanga komanso kusalala kwa pamwamba.
Dry Mix matope: HPMC imagwiritsidwa ntchito mumatope osakaniza owuma kuti apititse patsogolo kumamatira ndi kusunga madzi. Ma viscosity wamba ali pakati pa 15,000 ndi 75,000 mPa·s. M'malo osiyanasiyana ogwiritsira ntchito, kusankha HPMC yokhala ndi mamasukidwe oyenera kumatha kukulitsa magwiridwe antchito komanso kusunga madzi amatope.
Mtondo wodziyimira pawokha: Pofuna kupanga matope odziyika okha kukhala ndi madzi abwino komanso kudziwongolera, kukhuthala kwa HPMC nthawi zambiri kumakhala pakati pa 20,000 ndi 60,000 mPa·s. Mtundu wa viscosity uwu umatsimikizira kuti matope amakhala ndi madzi okwanira popanda kusokoneza mphamvu yake atachiritsidwa.
Kupaka kwamadzi: Mu zokutira zosakhala ndi madzi, kukhuthala kwa HPMC kumakhudza kwambiri zinthu zokutira komanso kupanga mafilimu. HPMC yokhala ndi mamasukidwe akayendedwe apakati pa 10,000 ndi 50,000 mPa·s nthawi zambiri imagwiritsidwa ntchito kuwonetsetsa kuti mpweya wabwino ndi kupanga mafilimu a zokutira.
4. Kusankhidwa kwa HPMC mamasukidwe akayendedwe
Kusankhidwa kwa mamachulukidwe a HPMC makamaka kumadalira gawo lake pamagwiritsidwe apadera komanso zofunikira pakumanga. Nthawi zambiri, kukwezeka kwa mamasukidwe a HPMC kumapangitsa kuti kukhuthala komanso kusunga madzi kukhale kwabwino, koma kukhuthala kwakukulu kungayambitse zovuta pakumanga. Chifukwa chake, kusankha HPMC yokhala ndi mamasukidwe oyenera ndiye chinsinsi chotsimikizira zotsatira zomanga.
Kukhuthala kwamphamvu: HPMC yokhala ndi mamasukidwe apamwamba imakhala ndi mphamvu yakukhuthala ndipo ndiyoyenera kugwiritsa ntchito zomwe zimafunikira kumamatira kwambiri, monga guluu wa matailosi ndi ufa wa putty.
Kusunga madzi: HPMC yokhala ndi mamasukidwe apamwamba ndi yabwino kwambiri pakuwongolera chinyezi ndipo ndiyoyenera kuzinthu zomwe zimafunikira kusunga chinyezi kwanthawi yayitali, monga matope osakaniza owuma.
Kugwira ntchito: Pofuna kupititsa patsogolo ntchito ya zinthu, kukhuthala kwapakati kumathandiza kuti ntchito yomanga ikhale yosalala, makamaka mumatope odzipangira okha.
5. Zomwe zimakhudza kukhuthala kwa HPMC
Digiri ya polymerization: The apamwamba digiri ya polymerization wa HPMC, ndi kukulirakulira mamasukidwe akayendedwe. ntchito zosiyanasiyana amafuna kusankha HPMC ndi madigiri osiyana polymerization kukwaniritsa zotsatira zabwino.
Kukhazikika kwa njira: Kuchuluka kwa HPMC m'madzi kudzakhudzanso kukhuthala kwake. Nthawi zambiri, kuchuluka kwa yankho kumapangitsa kuti ma viscosity achuluke.
Kutentha: Kutentha kumakhudza kwambiri kukhuthala kwa mayankho a HPMC. Nthawi zambiri, kukhuthala kwa mayankho a HPMC kumachepera pamene kutentha kumawonjezeka.
Monga chowonjezera chofunikira pazomangira, kukhuthala kwa HPMC kumakhudza kwambiri ntchito yomanga ndikugwiritsa ntchito pomaliza. Kukhuthala kwa HPMC kumasiyana pakati pa mapulogalamu, koma nthawi zambiri kumakhala pakati pa 10,000 ndi 100,000 mPa·s. Posankha HPMC yoyenera, m'pofunika kuganizira mozama mmene mamasukidwe akayendedwe akayendedwe pa katundu zinthu malinga ndi zofunika ntchito ndi mikhalidwe yomanga, kuti akwaniritse bwino ntchito zotsatira.
Nthawi yotumiza: Jul-08-2024