HydroxyPropyyl methylcellose (HPMC) yog cov dej sib xyaw ua ke-soluble polymer compound uas yog dav siv nyob rau hauv ntau cov neeg siv khoom thiab cov neeg siv khoom, suav nrog cov tshuaj ntxuav tej khaub ncaws. Nws cov haujlwm tseem ceeb hauv tshuaj ntxhua khaub ncaws xws li xee tuab, ua yeeb yam, zaj duab xis kev tiv thaiv thiab kev txhim kho cov ntaub.
1. Thickening tus neeg sawv cev
HPMC yog cov tuab tuab uas txhim kho cov khoom siv lub cev thiab kev siv cov tshuaj ntxhua khaub ncaws kom nce ntxiv. Cov txheej txheem kev tshwj xeeb yog tias HPMC lwg me me ua cov kab ua haujlwm nrog dej lwg me me, uas txo cov kua roj aqueous thiab yog li nce viscosity. Thickening muaj ntau cov txiaj ntsig tseem ceeb:
Tiv thaiv kev tawm tsam: cov khoom xyaw nquag thiab cov khoom noj hauv cov khaub ncaws ntxhua khaub ncaws feem ntau khom thaum lub sijhawm cia thiab siv, tshwj xeeb tshaj yog hauv cov xab npum ua kua. HPMC pab ncua cov khoom xyaw no los ntawm kev nce viscosity ntawm kev daws, ua kom muaj kev faib tawm cov khoom xyaw.
Yooj yim rau siv: ntau dua viscosity Tu hmoov yuav zoo dua ua rau cov khaub ncaws, kom tsis txhob nchuav thaum siv, thiab txhim kho kev siv nyiaj.
2. Stabilizer nyhuv
HPMC ua raws li lub stabilizer kom tiv thaiv cov Cheebtsam hauv tshuaj ntxhua khaub ncaws ntxhua khaub ncaws los ntawm kev sib cais. Qhov no yog tshwj xeeb yog nyob rau hauv cov qauv muaj cov khoom xyaw ntau theem xws li cov roj, dej sib tov ua kua xab npes. HPMC tiv thaiv cov khoom sib cais los ntawm kev sib cais los ntawm kev ua kom lub ntsej muag tiv thaiv kab mob, yog li txuas cov khoom lag luam thiab txhim kho qhov ruaj ntseg ntawm cov khoom.
Emulsion Stability: HPMC tuaj yeem pab cov emulsifier ruaj cov roj-dej sib tov, tso cai rau cov mis los tswj hwm emulsification ruaj khov rau lub sijhawm ntev.
Tiv thaiv stratification: nws tuaj yeem txo lossis tsis txhob stratification ntawm cov kua dej ntxhua khaub ncaws thaum khaws cia thiab xyuas kom muaj cov khoom xyaw li thaum siv.
3. Zaj duab xis-tsim tus neeg sawv cev
Tom qab HPMC yog yaj hauv dej, nws tuaj yeem tsim ib qho pob tshab thiab hloov tau yooj yim. Cov cuab yeej no tuaj yeem siv hauv cov tshuaj tua ntxhua khaub ncaws rau:
STUCTIONAL: Thaum lub sijhawm ntxuav, HPMC tuaj yeem tsim cov yeeb yaj kiab nyias nyias nyob rau ntawm cov ntaub npuag kom txo cov ntaub ntawv rov qab los ntawm cov ntaub, yog li txhim kho cov nyhuv ntxuav.
Txhim Kho Kev Tiv Thaiv: Daim zaj duab xis no tuaj yeem tsim cov kev tiv thaiv ntawm cov khaub ncaws cov ris tsho kom tiv thaiv tau ntau dhau los thiab kua muag ntawm cov fibers hauv qab cov khaub ncaws.
4. Ntaub tiv thaiv
Los ntawm kev sib sau ua yeeb yaj kiab tiv thaiv, HPMC tuaj yeem tiv thaiv cov khaub ncaws hnav thiab txo cov neeg siv tshuab thiab tshuaj puas tsuaj uas yuav tshwm sim thaum ntxuav. Tshwj xeeb:
Anti-pilling: Rau hluavtaws fiber fiber cov ntaub, HPMC tuaj yeem txo cov kev sib txhuam ntawm cov fibers thaum ntxuav, yog li txo av.
Tiv thaiv cov fade: los ntawm kev txo cov kob thiab poob, HPMC pab ua kom cov khaub ncaws hnav zoo nkauj thiab zoo nkauj ntev dua.
5. Txhim kho kev ntxhib los mos
HPMC kuj tseem tuaj yeem txhim kho kev ntxhib los mos ntawm cov tshuaj ntxhua khaub ncaws, ua kom yooj yim rau siv thiab dispense. Nws lub cellulose derivative cov zog ua kom nws ua kom tau zoo kho cov rheological yam khoom ntawm cov tshuaj ntxuav tes (xws li cov kua txiv, nthuav tawm, thiab lwm yam) thiab txhim kho cov neeg siv kev paub.
Txoj kev tuav khaub ncaws uas muaj: Cov khaub ncaws HPMC feem ntau muaj kev xav zoo thaum siv thiab tsis muaj cov nplaum dhau lossis qhuav.
Zoo solubility: HPMC tuaj yeem kho cov solubility cov yam ntxwv ntawm cov tshuaj ntxuav ntxhua khaub ncaws, ua kom nws yooj yim dua hauv dej thiab txo cov seem.
6. Kev tiv thaiv thiab kev tiv thaiv ib puag ncig
Cov tshuaj lom neeg ntawm HPMC txiav txim siab nws txoj kev sib raug zoo thiab ib puag ncig ib puag ncig. Nws yog qhov zoo sib xws nrog ntau yam tshuaj ntxuav tes (xws li surfactants, cov quav ntxiv, thiab lwm yam) thiab ib puag ncig phooj ywg.
Formula sib haum xeeb: HPMC muaj kev sib raug zoo nrog lwm cov tshuaj xyaw thiab yuav tsis ua rau muaj kev phiv tsis zoo lossis tsis ua tiav.
Degradable: Raws li ib qho compound los ntawm cov cellulose ntuj, HPMC tau yooj yim nyob rau hauv ib puag ncig, uas yog nyob rau hauv kab nrog tus phooj ywg ntsuab thiab ib puag ncig tus mob me me.
Lub luag haujlwm ntawm HPMC hauv cov tshuaj ntxuav ntxhua khaub ncaws yog qhov tseem ceeb nyob rau hauv thickening, stabisation, zaj duab xis kev tiv thaiv thiab kev txhim kho cov ntaub. Los ntawm kho cov khoom siv cev nqaij daim tawv thiab tshuaj ntxuav tes ntawm cov khaub ncaws ntxhua, nws txhim kho kev ntxuav, txhim kho kev tiv thaiv ib puag ncig ntawm cov khoom. Vim hais tias cov khoom no, HPMC tau siv dav hauv cov khaub ncaws niaj hnub ntxhua khaub ncaws thiab tau dhau los ua ib qho ntawm cov khoom xyaw indispensable.
Lub Sijhawm Post: Feb-17-2025