Putty ndi chinthu chofunikira kwambiri chomwe chimagwiritsidwa ntchito pomanga khoma, ndipo magwiridwe ake amakhudza mwachindunji kumatirira kwa utoto ndi mtundu wa kapangidwe kake. Pakupanga putty, zowonjezera za cellulose ether zimagwira ntchito yofunika kwambiri.Hydroxypropyl Methylcellulose (HPMC), monga imodzi mwa ma ether a cellulose omwe amagwiritsidwa ntchito kwambiri, imatha kusintha bwino kukhuthala, magwiridwe antchito omanga komanso kukhazikika kwa putty.
1. Katundu woyambira wa Hydroxypropyl Methylcellulose
HPMC ndi polima yosasungunuka m'madzi yopanda ionic yokhala ndi kukhuthala kwabwino, kusunga madzi, kufalikira, kusungunuka ndi kupanga filimu. Kukhuthala kwake kumakhudzidwa ndi kuchuluka kwa kusintha, kuchuluka kwa polymerization ndi momwe zimasungunukira. Madzi a AnxinCel®HPMC amawonetsa mawonekedwe a madzi a pseudoplastic, ndiko kuti, pamene kuchuluka kwa shear kumawonjezeka, kukhuthala kwa yankho kumachepa, zomwe ndizofunikira kwambiri pakupanga putty.
2. Zotsatira za HPMC pa kukhuthala kwa putty
2.1 Kukhuthala kwa mphamvu
HPMC imapanga njira yokhuthala kwambiri ikasungunuka m'madzi. Mphamvu yake yokhuthala imaonekera makamaka m'mbali zotsatirazi:
Kukweza thixotropy ya putty: HPMC imatha kusunga putty pa kukhuthala kwakukulu ikakhala yosakhazikika kuti isagwe, ndikuchepetsa kukhuthala ikakanda ndikukweza magwiridwe antchito omanga.
Kuonjezera magwiridwe antchito a putty: Kuchuluka koyenera kwa HPMC kungathandize kuti putty ikhale yofewa, zomwe zimapangitsa kuti kukanda kukhale kosalala komanso kuchepetsa kukana kwa zomangamanga.
Kukhudza mphamvu yomaliza ya putty: Mphamvu yokhuthala ya HPMC imapangitsa kuti chodzaza ndi zinthu zomangira simenti mu putty zifalikire mofanana, kupewa kulekanitsa ndikuwongolera magwiridwe antchito olimba pambuyo pomanga.
2.2 Zotsatira pa njira yothira madzi m'thupi
HPMC ili ndi mphamvu zabwino kwambiri zosungira madzi, zomwe zingachepetse kutuluka kwa madzi mwachangu mu putty layer, motero kutalikitsa nthawi yonyowa ya putty yochokera ku simenti ndikuwonjezera mphamvu ndi kukana kwa ming'alu ya putty. Komabe, kukhuthala kwakukulu kwa HPMC kudzakhudza kutseguka kwa mpweya ndi liwiro la kuumitsa kwa putty, zomwe zimapangitsa kuti ntchito yomanga ikhale yochepa. Chifukwa chake, kuchuluka kwa HPMC kuyenera kuonetsetsa kuti ikugwira ntchito bwino pamene ikupewa zotsatirapo zoyipa pa nthawi youma.
2.3 Ubale pakati pa kulemera kwa mamolekyulu a HPMC ndi kukhuthala kwa putty
Kulemera kwa mamolekyulu a HPMC kukakhala kwakukulu, kukhuthala kwa madzi ake kumakulirakulira. Mu putty, kugwiritsa ntchito HPMC yokhala ndi kukhuthala kwakukulu (monga mtundu wokhala ndi kukhuthala koposa 100,000 mPa·s) kungathandize kwambiri kusunga madzi ndi mphamvu zoletsa kutsetsereka kwa putty, komanso kungayambitse kuchepa kwa kugwira ntchito. Chifukwa chake, malinga ndi zofunikira zosiyanasiyana zomangira, HPMC yokhala ndi kukhuthala koyenera iyenera kusankhidwa kuti igwirizane ndi kusunga madzi, kugwira ntchito bwino komanso kugwira ntchito komaliza.
2.4 Zotsatira za mlingo wa HPMC pa kukhuthala kwa putty
Kuchuluka kwa AnxinCel®HPMC komwe kwawonjezeredwa kumakhudza kwambiri kukhuthala kwa putty, ndipo nthawi zambiri mlingo wake umakhala pakati pa 0.1% ndi 0.5%. Ngati mlingo wa HPMC uli wochepa, mphamvu yokhuthala pa putty imakhala yochepa, ndipo singathe kukonza bwino kugwira ntchito komanso kusunga madzi. Ngati mlingo wake uli wokwera kwambiri, kukhuthala kwa putty kumakhala kwakukulu kwambiri, kukana kwa kapangidwe kake kumawonjezeka, ndipo kungakhudze liwiro la kuuma kwa putty. Chifukwa chake, ndikofunikira kusankha kuchuluka koyenera kwa HPMC malinga ndi njira ya putty ndi malo omangira.
Hydroxypropyl methylcellulose imagwira ntchito pakukhuthala, kusunga madzi komanso kukonza kugwira ntchito kwa putty. Kulemera kwa mamolekyulu, kuchuluka kwa cholowa m'malo ndi kuchuluka kwa chowonjezera chaHPMCzidzakhudza kukhuthala kwa putty. Kuchuluka koyenera kwa HPMC kungathandize kuti putty igwire bwino ntchito komanso kuti isagwere madzi, pomwe kuwonjezera kwambiri kungapangitse kuti ntchito yomanga ikhale yovuta. Chifukwa chake, pakugwiritsa ntchito putty yeniyeni, makhalidwe a kukhuthala ndi zofunikira pakupanga kwa HPMC ziyenera kuganiziridwa mokwanira, ndipo fomula iyenera kusinthidwa moyenera kuti ipeze magwiridwe antchito abwino kwambiri komanso mtundu womaliza.
Nthawi yotumizira: Feb-10-2025