Hydroxypropyl methylcellulose (hpmc)ndi polymer yomwe imagwiritsidwa ntchito kwambiri pazomangira, makamaka pakupanga matope onyowa. Imakhala ndi chisungiko chabwino chamadzi, chotukuka, zolimbitsa thupi zolimbitsa thupi ndi zinthu zina, ndipo zimatha kusintha matope onse.
1. Sinthani kusungidwa kwamadzi
HPMC ili ndi mayamwidwe amphamvu ndi kuthekera kwa madzi, komwe kumatha kusintha madzi onyowa matope onyowa. Panthawi yomanga, chinyezi chambiri chitha kupangitsa matope kuti asachepere komanso kusweka, kuchepetsa mphamvu zake ndikuchepetsa mgwirizano wake ndi gawo lapansi. Pambuyo poti kuwonjezera kuchuluka kwa HPMC, network yowonda imatha kupangidwa mu matope kuti mutseke chinyezi komanso kupewa kunyamuka mwachangu komanso nthawi yotsegulira matombi. Kuphatikiza apo, ndalama zazimayi zambiri zimatsimikizira kuti simenti ikhale hydration kwathunthu, potengera mphamvu yamphamvu ya matope.
2. Kupititsa patsogolo kugwirira ntchito
Kugwiritsa ntchito matope onyowa ndi chizindikiro chofunikira pomanga, kuphatikizapo madzi ake, mikodzo ndi kuthekera. Chifukwa cha kukula kwake, HPMC imatha kusintha madzimadzi ndi kutsatsa matope, kumapangitsa kuti zikhale zosavuta kugwirira matope komanso kuphimba pamwamba pa gawo lapansi. Nthawi yomweyo, zingachepetse kuchepetsedwa ndi magazi a matope ndikuwonetsetsa kuti pali matope omanga. Kusintha kumeneku sikungangochepetsa zovuta zomanga, komanso kusintha kotsatira pakati pa matope ndi maziko a zinthu zomanga.
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Pomanga mabuku, matope amayamba kusamba, zomwe zimakhudza kugwiritsa ntchito ndi luso lopanga. Kuchuluka kwa HPMC kumatha kuwonjezera nkhawa za matope, kupangitsa kuti ikhale yolimbana ndi kusamba kolunjika. Makamaka mukamagwiritsa ntchito matope ophatikizika, hpmc imatha kukhalabe ndi mawonekedwe a matope ndikuchepetsa chiopsezo cha kutsika kwa chivundi mutamanga. Kuphatikiza apo, thixotropy ya HPMC imalola matope kuti akhalebe ndi chidwi kwambiri m'malo okhazikika ndikuwonetsa kuti ndi mphamvu zakunja, kukonzanso mphamvu zomanga.
4. Sinthani mphamvu zamakina
NgakhaleHpmcimawonjezeredwa ngati wosintha ndi Mlingo wotsika, zimakhudzabe zovuta pamatope. Kuchuluka kwa hpmc koyenera kumatha kuthandizira kusokoneza matope chifukwa madzi ake osasunga amatha kuchepetsa mapangidwe a ming'alu yowuma. Kuphatikiza apo, chifukwa cha kusintha kwake mu microptuction micropturcution ya matope, mphamvu yakuwoneka bwino ndipo kuthekera kwa matope kumayendetsedwanso. Komabe, ziyenera kudziwika kuti kuchuluka kwa HPMC kungayambitse kuchepa mphamvu kwa matope, chifukwa kumawonjezera mpweya wa matope ndikufooketsa matopewo. Chifukwa chake, kuphatikiza komwe kumayenera kulamulidwa mosamalitsa mukamagwiritsa ntchito HPMC, nthawi zambiri 0.1% -0.3% ya kulemera kwa simenti.
5. Zinthu zokopa ndi kukhathamiritsa
Mphamvu ya hpmc pazinthu zonyowa - kusakaniza matope amagwirizana kwambiri ndi kulemera kwake kwa ma molecular, digiri yolowa m'malo mwake. HPML yolemera HPMC imakhala yolimba kwambiri, koma ikhoza kukhala yovuta pakupanga; HPMC yotsika mtengo ya hpmc imasungunuka komanso yoyenera pofuna kuchita zinthu zomanga mwachangu. Kuphatikiza apo, hpmc yokhala ndi madigiri osiyanasiyana olowa m'malo mwake ali ndi magwiridwe osiyanasiyana osungira madzi ndi kutsatira. Pamapulogalamu othandiza, mtundu woyenera wa HPMC uyenera kusankhidwa chifukwa cha matope ndi mikhalidwe yomanga, ndipo mlingo wake uyenera kukonzedwa chifukwa choyesa pakati pa magwiridwe antchito ndi mtengo.
Monga kuphatikiza kofunikira mu matope onyowa,Hpmcimathandizira kukonza matope mwapa matope mwa kusungidwa kwamadzi, kukonzanso ntchito, kukulitsa kukhazikika kwa Aleg kukana ndi kukonza makina. Kusankha koyenera komanso kugwiritsa ntchito kwa HPMC sikungakuthandizeni kukonza bwino kwa matope komanso kukhazikika kwa matope, komanso kuchepetsa zofooka zomangamanga ndikuchepetsa ndalama zothandizira kukonza. Chifukwa chake, kuphunzira mozama za kachitidwe ka HPMC pa matope onyowa onyowa kunyowa ndikofunikira kwambiri ku ntchito zomanga zamakono.
Post Nthawi: Nov-20-2024