Tas sim noHydroxyPropyl Carboxymethyl CelluloseKev lag luam muag khoom ntau thiab ntau dua, tus nqi tsis yog sib npaug, yuav ua li cas kom meej qhia qhov zoo ntawm hydroxyprropy cellulose tau dhau los ua qhov teeb meem tseem ceeb! Yog li yuav ua li cas thiaj li txiav txim siab qhov zoo ntawm hydroxyprropythylcellulose? Thawj qhov uas saib yog qhov dawb ntawm hydroxyprropyl cellulose; Txawm hais tias dawb tsis tuaj yeem paub meej txawm tias HPMC tsim nyog rau kev thov, tab sis hauv cov txheej txheem tsis zoo yuav ntxiv cov tshuaj ntxuav hniav dawb, yuav ua rau nws tus neeg ntxuav hniav dawb yuav ntxiv. Tab sis feem ntau hais lus, feem ntau ntawm cov cellulose zoo tshaj plaws ether yog qhov zoo dua whiteness.
Thib ob, kom pom cov txiaj ntsig ntawm hydroxypropyl cellulose: hydroxynethyl cellulropyl cellaj tsawg, hydroxyethyl cellulose hechpmc txog 100 mesh. HPMC rau feem ntau 60-80 mesh, feem ntau methyl cellulose softer, qhov zoo dua dispersion.
Daws ntawm cellulose ether clarity:HPMCMuab tso rau hauv dej los tsim cov pob tshab colloid, saib cov siab dua daws teeb meem, qhov siab dua ntawm kev daws teeb meem tshuaj lom neeg qis dua.
Thaum cov khoom lag luam yog rhuab, nws yog gelatinized los yog pas dej thiab tom qab rov kho dua. Nws yog hydrophobic thiab dej-soluble. Kev ua vaj tse yog qhov tseem ceeb koom tes thiab rhuav tshem cov khoom siv ntawm cov dej-resistant putty hmoov. Nws cov qauv dej tiv thaiv yog li hauv qab no: nyob rau hauv cov txheej txheem ntawm kev ntxiv cov dej thiab cov txiv hmab txiv ntoo siav tau rov qab los rau hauv cov cement muab tshuaj txhuam. Tom qab cov Maas ua tau raws li dej, thiab CA CA (OH) daws, thiab tib lub sijhawm ua kom muaju thiab calstite thiab calcium silicate hydrate colloids yog tsim. Cov nplais looj cov nplais yog muab tso rau ntawm cov gel thiab cov hloov ua kom huv. Nrog rau kev nce qib ntawm cov khoom siv ntawm kev ua kom nce, cov kua txiv hmab tau nce zuj zus hauv cov khoom siv inorganic xws li cov cement, thiab ua ib qho ze tsub zuj zus txheej rau ntawm cov cement gel. Vim kev nce dej txo qis ntawm cov dej qhuav, cov lus sib xyaw ua ke ntawm cov yeeb yaj kiab, ua kom muaj kev sib xyaw ua ke ntawm cov yeeb yaj kiab ua ke, thiab kev sib xyaw ua ke cov hmoov nplej zom zaws nrog lwm cov hmoov ua ke.
Lub Sijhawm Post: Apr-28-2024