Kuchuluka kwa hydroxypropyl methylcellulose (hpmc) mu punty ufa ndi chimodzi mwazinthu zazikulu zomwe zimatsimikizira magwiridwe a punty ufa. Kuphatikizika kwa HPMC kumatha kusintha kugwirira ntchito, kusungidwa kwamadzi, kutsatira ndi kulimba kwa putty ufa, pomwe zowonjezera kapena zosakwanira zimakhudza zotsatira zomaliza za ufa.
1. Udindo wa HPMC mu ufa
HPMC imagwiritsidwa ntchito polywer polymer ndi ntchito zazikuluzikulu:
(1) Kusunga kwamadzi
Ntchito yayikulu ya HPMC ndikuwongolera kuchuluka kwa madzi osungika, kumapangitsa kuti zikhale zovuta kuti madzi akhale otayika, ndikuchepetsa nthawi yotseguka, ndikuchepetsa kuwonongeka kwa madzi.
(2) Sinthani Kuchita Kuthana
HPMC imatha kusintha ufa wa putty, pangani ma sprauki osalala, kuchepetsa kukana kukana, sinthani mphamvu yomanga, ndikuchepetsa mphamvu ya ogwira ntchito omanga.
(3) Kukonza zomatira
HPMC imatha kukulitsa kutsatira pakati pa putty ufa ndi khoma, kuletsa kusanjikiza kuti asagwere, ndikusintha.
(4) Kuletsa kuyenda
Panjira zomangamanga, hpmc imatha kupewa ufa kuti ufa ufa chifukwa cha mphamvu yokoka, kukonzanso mkhalidwe womanga, makamaka ngati zigawo zozama zimapangidwa.
2. Zinthu zomwe zikukhudza HPMC
Kuchuluka kwa hpmc kumakhudzidwa ndi zinthu zambiri, kuphatikizapo mawonekedwe a ufa, malo omanga, ndi mtundu wa HPMC.
(1) Njira ya putty ufa
Ufa wa putty nthawi zambiri umakhala ndi calcium (calcium carbonate), siteji yowuma, simenti ufa, ndi ufa wosiyanasiyana ali ndi zofunikira zosiyanasiyana ku HPMC. Mwachitsanzo, malo okhala ndi simenti amafunikiranso madzi ambiri pakuchita kwake, kotero kuchuluka kwa HPMC kugwiritsidwa ntchito kudzakhala kokulirapo.
(2) Malo Opanga Omanga
Kutentha, chinyezi, komanso kuchuluka kwa madzi am'munsi osanjikiza zimakhudzanso kuchuluka kwa HPMC yomwe imagwiritsidwa ntchito. Mu kutentha kwambiri ndi malo owuma, kuti tisapewe madzi ochulukirapo, nthawi zambiri ndikofunikira kuwonjezera kuchuluka kwa HPMC.
(3) HPMC yabwino
HPMC yamitundu yosiyanasiyana ndi mitundu ili ndi zinthu zosiyanasiyana monga mafakiti, ogwirizira digirii, komanso zabwino, ndipo zimabweretsanso ufa. HPMCK HPMC ili ndi kusungidwa kwabwino, koma kungakhudze kugwirira ntchito, motero ndikofunikira kusankha mtundu woyenera malingana ndi zomwe zikuchitika.
3.. Mlingo wolimbikitsidwa wa HPMC
Mlingo woyenera wa HPMC nthawi zambiri umasiyanasiyana malinga ndi mtundu wa putty ufa:
(1) Wam'mimba wa khoma
Mlingo woyenera wa HPMC nthawi zambiri umakhala 0,2% ~ 0.5% (wachibale mpaka ufa wa punty). Ngati mamasukidwe a HPMC ndiakulu, Mlingo wolimbikitsidwa uli pafupi ndi mtengo wotsika; Ngati mafayilo ali otsika, amatha kuwonjezeka bwino.
(2) Woonda kunja kwa ufa
Makoma a khoma amafunikira nyengo yabwino komanso yolimbana ndi nyengo, kuchuluka kwa hpmc owonjezeredwa nthawi zambiri pakati pa 0,3% ~ 0.6% kuti apititse patsogolo madzi ndi kutsatira madzi.
(3) Wakuda wosanjikiza
Kwa stendser wosanjikiza, kuti muchepetse kuchepa kwa madzi mwachangu komanso kuwonongeka kwa madzi, kuchuluka kwa HPMC yowonjezeredwa bwino, nthawi zambiri pakati pa 0,4% ndi 0,7%.
4. Kusamala
(1) Pewani kuwonjezera kwambiri
Kuphatikiza kwambiri hpmc kungayambitse ufa wa punty kukhala wamtali kwambiri, kupanga ntchito yomanga bwino, osasalala, komanso kukhudzanso mphamvu pambuyo pochiritsa, ndikupangitsa kusokonekera kapena ufa.
(2) Sankhani mtundu woyenera
HPMC yokhala ndi ma viscosties osiyanasiyana ndioyenera mitundu yosiyanasiyana ya ufa. Mwachitsanzo, HPMC yokhala ndi mamasukidwe otsika (400-20,000mpha) ndioyenera kukweza khoma lalikulu, pomwe HPMC yokhala ndi mamasukidwe apamwamba (75,000-100,000 · 2000,000's) ndioyenera kwambiri kuti ikhale yomanga kapena yomanga yomanga yopanda pake.
(3) Kulephera kovomerezeka ndi kuwonongeka
HPMC iyenera kubadwanso nthawi yopanga njira kuti mupewe kuphatikizika komwe kumayambitsidwa ndi madzi. Ndikulimbikitsidwa kuti muwonjezere pang'onopang'ono pansi mopitilira muyeso, kapena gwiritsani ntchito njira yolumikizira kuti musakanikize ndi ufa wina kenako ndikuwonjezera madzi kusunthira.
(4) Gwiritsani ntchito ndi zina zowonjezera
HPMC imagwiritsidwa ntchito limodzi ndi zowonjezera zina (monga ma ether etherch, obwezeretsedwanso ndi ufa, etc.) kuti mukonze magwiridwe a putty ufa.
Kuchuluka kwa hpmc mu punty ufa ndi chinthu chofunikira chokhudza kugwirira ntchito komanso mtundu wa chinthu chomalizidwa. Nthawi zambiri, kuchuluka kwake kuli pakati pa 0,2% ndi 0,6%, komwe kumasinthidwa molingana ndi njira inayake. Mukamasankha HPMC, mafayilo ake, digiri ya zolowa m'malo mwake ndi machitidwe ena ayenera kuphatikizidwa kuti awonetsetse kuti ufa wabwino umasungidwa ndi madzi abwino. Nthawi yomweyo, kuphatikiza koyenera ndi zina zowonjezera ndi zomwe mungagwiritse ntchito njira yothetsera vutoli kungagwiritse ntchito bwino kwambiri udindo wa punty ufa.
Post Nthawi: Feb-14-2025