Hydroxypropyl starch ether (HPS) yog cov hmoov txhuv nplej siab hloov kho ntau yam siv dav hauv cov khoom noj, cov khoom siv hauv tsev, papermaking, textiles, thiab pharmaceuticals. Nws muaj cov thickening zoo heev, dej- tuav, stabilizing, thiab zaj duab xis- tsim cov khoom.
Cov kev siv tseem ceeb yog categorized raws li hauv qab no:
1. Kev lag luam khoom noj khoom haus: Raws li cov khoom noj muaj kev nyab xeeb
Siv ua cov thickener, suspending agent, stabilizer, thiab binder, tshwj xeeb tshaj yog haum rau cov khoom noj khov, khoom noj yooj yim, thiab cov khoom siv mis nyuj.
Nws txhim kho cov dej- tuav lub peev xwm ntawm cov zaub mov thiab tiv thaiv stratification thiab sedimentation, xws li hauv cov dej khov, paj npleg, thiab cov kua txiv hmab txiv ntoo uas muaj zog, ua kom zoo ib yam thiab ruaj khov.
Nws muaj qhov khov zoo -thaw ruaj khov, haum rau cov khoom noj uas rov ua kom khov thiab thawing.
Kev nyab xeeb siab; tus nqi ADI tsis txwv (FAO / WHO), thiab nws tuaj yeem siv tau raws li qhov xav tau ntau lawm.
2. Cov Khoom Siv Hauv Tsev: Txhim kho kev tsim kho thiab cov khoom ruaj khov
Dav siv nyob rau hauv qhuav mortar, putty, pobzeb nplaum, masonry mortar, plaster, thiab lwm yam khoom.
Nws lub luag haujlwm tseem ceeb suav nrog:
Anti-sagging thiab anti-sag: Txhim kho qhov smoothness thiab workability ntawm cov ntaub ntawv thaum lub sij hawm tsim kho, tiv thaiv slippage.
Sijhawm qhib: Piv txwv li, lub sijhawm ua haujlwm ntawm pobzeb nplaum tuaj yeem txuas ntxiv mus rau ntau tshaj 30 feeb.
Txhim kho cov dej tuav thiab cov khoom ua kom tuab: Thaum siv nrog cov cellulose ethers (xws li HPMC), nws tuaj yeem txo cov HPMC siv li ntawm 30%, txo cov nqi thiab txhim kho kev ua tau zoo.
Qhov pom zoo ntxiv tus nqi yog feem ntau 0.01% ~ 0.2%, hloov kho raws li kev tsim tshwj xeeb.
