Hydroxypropylmethylcellulose (HPMC) ndi multifunctional molecular compound yomwe yakhala ikugwiritsidwa ntchito kwambiri popanga zomangamanga. Amagwiritsidwa ntchito kwambiri pamapulogalamu a putty chifukwa amawongolera magwiridwe antchito komanso mtundu wa putty. M'nkhaniyi, tiwona momwe HPMC imagwiritsidwira ntchito mu putty, kusanthula mavuto omwe angabwere panthawi yogwiritsidwa ntchito, ndikugawana malangizo amomwe mungapewere mavutowa.
Choyamba, tiyeni tione mwatsatanetsatane makhalidwe a HPMC. Ndi nonionic cellulose ether, sungunuka m'madzi ndi zosungunulira zina. Mapangidwe ake apadera a maselo amaupatsa kukhuthala kwabwino kwambiri, kusunga madzi komanso zomatira. Chifukwa chake, ndichowonjezera choyenera pamapulogalamu a putty.
HPMC itha kugwiritsidwa ntchito ngati thickener, binder ndi emulsifier mu putty formulations. Ili ndi madzi osungira bwino kwambiri omwe amathandiza kuti putty isaume msanga. Imathandizanso kumamatira kwa putty ku gawo lapansi, ndikupangitsa kuti ikhale yolimba. Izi zimapangitsa HPMC kukhala chinthu chofunikira pama putty apamwamba kwambiri.
Komabe, mavuto ena amatha kuchitika pamene HPMC imagwiritsidwa ntchito mu putty. Vuto loyamba ndilokuti HPMC imakhudzidwa ndi pH ndi kusintha kwa kutentha. Ngati pH ya mapangidwe a putty ndi acidic kwambiri, zitha kuchititsa HPMC kutaya mamasukidwe. Panthawi imodzimodziyo, ngati kutentha kuli kwakukulu, kumapangitsa kuti HPMC iwonongeke, zomwe zidzakhudza ntchito ya putty.
Vuto linanso lomwe lingabwere ndi clumping. Ngati HPMC sinasakanizike bwino ndi zosakaniza zina mu fomula ya putty, imatha kupanga ma clumps. Ziphuphu izi zimakhudza ubwino wa putty, zomwe zimapangitsa kuti zikhale zosalala komanso zovuta kuziyika.
Kuti mupewe mavutowa, malamulo ena oyambira ayenera kutsatiridwa mukamagwiritsa ntchito HPMC mu mapulogalamu a Putty. Choyamba, ndikofunikira kusankha mtundu woyenera wa HPMC pamapangidwe a putty. Mitundu yosiyanasiyana ya HPMC ikhoza kukhala ndi mawonekedwe osiyanasiyana, kotero mtundu wolondola uyenera kusankhidwa pa ntchito inayake.
Chachiwiri, ndikofunikira kusakaniza bwino HPMC ndi zosakaniza zina mukupanga kwa putty. Izi zidzakuthandizani kupewa zotupa kapena zotupa. Ndikofunikiranso kugwiritsa ntchito njira yoyenera yosakanikirana kuti mutsimikizire kuti putty yasakanizidwa bwino.
Chachitatu, tcherani khutu ku pH ndi kutentha kwa putty formula. Ndikofunika kuwonetsetsa kuti pH ili mkati mwazovomerezeka zamtundu wa HPMC womwe ukugwiritsidwa ntchito. Ndikofunikiranso kuyang'anira kutentha kwa kapangidwe kake ndikusunga mkati mwazovomerezeka kuti mupewe kuwonongeka kwa HPMC.
Mwachidule, HPMC ndi gawo lofunikira pamapangidwe apamwamba kwambiri a putty. Amapereka mawonekedwe abwino kwambiri osungira madzi, zomatira komanso kukhuthala komwe kumatha kupititsa patsogolo magwiridwe antchito komanso mtundu wa putty. Komabe, mavuto ena amatha kuchitika panthawi yomwe amagwiritsidwa ntchito, monga kukhudzidwa kwa pH ndi kusintha kwa kutentha, caking, ndi zina zotero.
Nthawi yotumiza: Jul-27-2023