Hydroxypropylraylencellulose (HPMC) yog qhov sib xyaw ua ke nyob rau ntau yam kev lag luam, suav nrog kev tsim cov kua roj vanish. Hauv varnishes, HPMC yog siv los ua cov tuab thiab rheology kho dua tshiab. Nws pab kom nce viscosity thiab kev ruaj khov ntawm cov kua roj vanish, ua rau nws yooj yim rau kev thov thiab txhim kho nws cov kev ua tau zoo tag nrho.
HPMC yog lub cellulose derivative muab tau los ntawm ntoo lossis cov paj rwb. Nws yog dej-soluble thiab ua cov tshuaj ntshiab, tsis muaj kob thaum sib xyaw nrog dej. Hauv varnishes nws coj cov khoom nram qab no:
Viscosity tswj: HPMC pab tswj cov thickness lossis viscosity ntawm varnish, kom nws muaj txoj cai sib xws rau daim ntawv thov.
Zaj duab xis tsim: Pab cov khaub ncaws hnav, du zaj duab xis ntawm ib substrate, muab cov txheej txheem tiv thaiv thiab zoo nkauj.
Txhim kho Adhesion: HPMC txhim kho cov nplaum ntawm cov kua roj vanish rau saum npoo, txhawb kom zoo dua qub thiab kav ntev.
Txo lub ntsej muag: HPMC cov khoom siv thickenies txo cov yuam sij thaum daim ntawv thov, ua rau muaj cov txheej txheem sib txawv.
Stability: Nws ua rau muaj kev ruaj khov ntawm cov varnish formulations, tiv thaiv kev sib cais particle lossis sib cais.
Thaum siv HPMC hauv varnishes, nws yog ib qho tseem ceeb kom xav txog cov kev tsim tshwj xeeb thiab cov khoom xav tau ntawm cov khoom kawg. Cov concentration ntawm HPMC, ntxiv rau lwm cov khoom xyaw, tuaj yeem cuam tshuam rau kev ua tau zoo ntawm cov kua roj vanish.
Tshwj xeeb, HPMC tau siv dav hauv kev lag luam xws li cov tshuaj kiab duab, khoom noj, thiab tsim kho vim nws cov khoom siv ntau yam raws li cov thickener thiab stabilizer thiab stabilizer.
Lub Sijhawm Post: Feb-19-2025