Lub instant hydroxypropyl methylcellulose ether yog tsim los rau cov khoom siv dej. Lub nto ntawm hydroxypropyl methylcellulose ether yog kho nrog glyoxal nyob rau hauv ib tug tej yam kub thiab pH nqi. Hydroxypropyl methyl cellulose ether kho nyob rau hauv txoj kev no tsuas yog dispersed nyob rau hauv nruab nrab dej txias tsis o thiab viscosity, uas plays lub luag hauj lwm nyob rau hauv ncua o. Lub sijhawm no, cov tshuaj aqueous yog nplawm rau 5-10 feeb lossis thaum qhov chaw daws teeb meem (PH tus nqi) raug kho kom alkaline, hydroxypropyl methylcellulose ether pib o thiab tsim viscosity. Hom kev kho saum npoo no feem ntau yog hu ua hom instant.
Tus yam ntxwv ntawm instant hydroxypropyl methylcellulose yog thaum nws ntsib dej txias, nws yuav sai sai diffuse nyob rau hauv dej txias, tab sis nws yuav siv sij hawm rau nws viscosity nce, vim hais tias nws tsuas yog diffuses nyob rau hauv dej thaum ntxov, thiab nws tsis yaj nyob rau hauv ib tug. kev xav ntau heev. Nws viscosity ncav cuag tus nqi siab tshaj plaws rau li 20 feeb lossis ntau dua. Qhov zoo ntawm qhov no yog tias nws yog siv rau hauv kev lag luam tshwj xeeb yam tsis muaj cov hmoov qhuav qhuav, lossis thaum nws yuav tsum tau yaj thiab dej kub tsis tuaj yeem siv vim cov khoom siv thiab lwm yam laj thawj. Instant hydroxypropyl methylcellulose daws qhov teeb meem no.
Instant-type hydroxypropyl methylcellulose disperses sai sai hauv dej (dispersion degree yog 100%), dissolves sai, tsis clumping, tshwj xeeb tshaj yog nyob rau hauv lub tom qab theem, cov tshuaj colloidal muaj siab transparency (txog 95%) thiab loj sib xws, uas daws cov teeb meem. nyob rau hauv kev siv tswv yim. Kev txwv, nthuav dav ntawm daim ntawv thov, xws li daim ntawv thov hauv kev tsim cov kua nplaum, daim ntawv thov nyob rau hauv cov kua ua kua admixtures, thiab tshwj xeeb teb xws li tshuaj ntxuav txhua hnub.
Peb tau qhia lub ntiaj teb cov cuab yeej tsim khoom thiab thev naus laus zis, muaj cov kab ntau lawm niaj hnub ntawm cellulose ether thiab redispersible latex hmoov, thiab xyuas kom muab cov neeg siv khoom txaus siab nrog nws cov kev tswj hwm nruj, kev sim thiab kev pabcuam zoo tshaj plaws ntawm qhov chaw. Tam sim no cov khoom lag luam yog hydroxypropyl methylcellulose HPMC, hydroxyethyl cellulose HEC, hydroxypropyl starch ether HPS, redispersible latex hmoov series. Cov khoom siv dav siv hauv kev tsim kho, tshuaj lom neeg kev lag luam, xim, tshuaj lom neeg kev lag luam niaj hnub, kev lag luam tub rog thiab lwm yam kev lag luam, thiab feem ntau ua rau cov neeg ua yeeb yaj kiab tsim, nplaum, dispersants, stabilizers, thickeners, thiab lwm yam.
Kev cia siab rau nws tus kheej cov khoom zoo thiab nws cov xwm txheej thiab kev cuam tshuam hauv cov hmoov qhuav cov khoom siv ntxiv kev lag luam, thiab nyob rau hauv qhov chaw ntawm ib txwm tswj hwm lub luag haujlwm ntawm cov neeg ua haujlwm zoo ua ntej, tam sim no tau koom tes nrog cov tuam txhab thoob ntiaj teb thiab hauv tsev zoo rau cov khoom lag luam ntxiv. Txhawb kev ua haujlwm: polypropylene fiber, Ntoo fiber, hloov cov hmoov txhuv nplej siab ether, polyvinyl cawv hmoov, hmoov defoamer, dej reducer, dej repellent, calcium formate thiab lwm yam hmoov qhuav additives.
Post lub sij hawm: Nov-22-2022