HydroxyPropyyl methylulose (HPMC, HydroxyPropyyl methylulose) yog kev hloov cov dej-soluble polymer ntawm ntuj cellulose. Nws yog dav siv nyob rau hauv ntau yam kev lag luam, xws li cov ntaub ntawv vaj tsev, tshuaj, zaub mov noj. Raws li kev ua haujlwm ntau ntxiv, HPMC lub luag haujlwm hauv cov tshuaj ntxuav tes tau txais kev saib xyuas ntxiv. Nws daim ntawv thov hauv cov tshuaj ntxuav ua tsis tau tsuas yog txhim kho kev ruaj ntseg ntawm cov mis, tab sis kuj ua kom pom kev ntxuav thiab txhim kho cov kev paub ntawm cov xab npum.
1. Thickeners thiab stabilizers
Lub luag haujlwm tseem ceeb ntawm HPMC hauv cov xab npum ua pa yog ua tuab thiab stabilizer. Lub viscosity ntawm ib tug xab npum yog qhov tseem ceeb rau nws cov kev ua tau zoo. Ib qho xab npum uas yog nyias nyias yuav ploj, ua rau nws nyuaj siv, thaum lub xab npum uas tuab heev yuav cuam tshuam nws cov xim thiab yooj yim ntawm kev siv. HPMC tuaj yeem hloov kho cov xab npum rau lub xeev zoo tagnrho los ntawm nws cov khoom siv ua tau zoo heev. Nws cov qauv molecular tshwj xeeb ua rau nws ua kom muaj zog hydrogen khi nrog dej lwg me, yog li tseem ceeb tshaj plaws viscosity ntawm lub system.
HPMC kuj muaj cov xwm txheej zoo dua qub, tshwj xeeb tshaj yog nyob rau hauv cov xab npum ua kua, tiv thaiv nws cov khoom xyaw los ntawm delaminating lossis teeb tsa. Qhov no yog tshwj xeeb yog qhov tshwj xeeb rau cov xab npum uas muaj cov khoom siv lossis cov khoom xyaw uas tau hais tawm, raws li cov khoom xyaw no yuav txiav txim thaum lub sijhawm ntev, ua rau txo cov tshuaj ntxuav tes lossis tsis ua haujlwm. Los ntawm kev ntxiv HPMC, qhov teeb meem ntawm kev sib cais ua ke tuaj yeem zam tau thiab kev sib xyaw ntawm cov xab npum thoob plaws hauv lub sijhawm tuaj yeem tswj tau.
2. Txhim Kho Solubility
HPMC yog dej-soluble polymer uas tuaj yeem yaj hauv dej txias thiab dej kub kom tsim cov kev daws teeb meem colloidal. Hauv cov tshuaj ntxuav tawm, qhov sib ntxiv ntawm HPMC tuaj yeem txhim kho cov solubility ntawm cov khoom xyaw ua ke hauv cov dej paug, tshwj xeeb tshaj yog nyob rau hauv cov dej tsawg. Piv txwv li, thaum ntxuav hauv dej txias, qee cov khoom xyaw rau cov tshuaj ntxuav ib txwm maj mam, thaum HPMC tuaj yeem nce lawv cov kev ntxuav ua kom nrawm dua ntawm cov txheej txheem ntxuav. Cov xeeb ceem no yog qhov tseem ceeb tseem ceeb rau kev txhim kho cov dej txias txias.
3. Muab kev ua yeeb yaj kiab zoo heev
Lwm tus yam ntxwv tseem ceeb ntawm HPMC yog nws cov yeeb yaj kiab zoo tshaj plaws. Thaum HPMC yog yaj hauv dej, nws tuaj yeem ua ib zaj duab xis nyias nyob rau ntawm qhov chaw ntawm cov khoom, uas tuaj yeem tiv thaiv cov dej paug theem nrab los ntawm hmoov av thiab stains. Hauv cov tshuaj ntxuav tes, cov yeeb yaj kiab ua yeeb yam ntawm HPMC pab txhim kho kev tiv thaiv tawm tsam kev sim tshuaj, uas yog qhov tsis tshua muaj kev sib kis nrog av tom qab ntxuav. Ib qho ntxiv, cov yeeb yaj kiab tiv thaiv no tseem tuaj yeem txhim kho cov teeb meem ntawm khaub ncaws lossis thaj chaw, txhim kho cov txiaj ntsig pom ntawm cov khoom.
4. Nce ua npuas dej ruaj khov
Hauv ntau cov xab npum, tshwj xeeb cov tshuaj ntxuav thiab cov khoom siv saib xyuas tus kheej, tus nqi thiab kev ua npuas ncauj zoo hauv kev txiav txim siab cov khoom siv. HPMC muaj cov ua npuas ncauj tseem ceeb ua npuas ncauj. Lub sijhawm thiab kev ruaj khov ntawm cov ua npuas ncauj xav tau cov nyhuv synforant thiab HPMC tuaj yeem txhim kho kev ploj nyiaj ntawm cov ua npuas ncauj, thiab txuas lub sijhawm txij nkawm ntawm ua npuas ncauj. Qhov no tso cai rau cov xab npum kom muaj sia kom muaj lather rau lub sijhawm ntev dua thaum siv, txhim kho kev tu kom huv.
5. Txhim kho cov txiaj ntsig raug tshem tawm
Muaj ntau cov tshuaj xab pab muaj cov khoom me me lossis lwm cov khoom siv tsis tau yooj yim uas feem ntau ua rau cov kua, cuam tshuam rau cov khaub ncaws hnav thiab cov tshuaj lom zem. HPMC tuaj yeem tiv thaiv qhov kev daws teeb meem ntawm cov lus no los ntawm nws cov khoom ncua. Nws tsim cov qauv network uas ncua thiab ruaj khov kom lawv tau faib cov kua, kom ua rau cov tshuaj ntxuav ua kom sib xws thoob plaws cia thiab siv.
6. Kev tiv thaiv ib puag ncig thiab kev ruaj khov
Nrog rau kev tiv thaiv ntxiv ntawm kev tiv thaiv ib puag ncig, cov neeg muaj cov tseev kom siab dua thiab ib puag ncig ntawm kev tiv thaiv ib puag ncig ntawm xab npum. Raws li ib tug txiv neej tau muab cov khoom siv biodegradable, HPMC ua tau raws li qhov yuav tsum muaj ntawm kev lag luam ntsuab ntsuab thiab muaj kev ua phooj ywg zoo. Nws ntxiv yuav tsis tsuas yog ua rau tsis muaj kuab paug rau ib puag ncig cov tshuaj tua kab mob hauv cov tshuaj ntxuav tes, txhawm rau txhim kho kev ua yeeb yam ntawm ib puag ncig ntawm cov xab npum.
7. Txhim Kho Cov Ntaub Muag Khoom Muag
Thaum ntxuav cov khaub ncaws, lubricating cov khoom ntawm HPMC tuaj yeem txhim kho txoj kev xav ntawm cov ntaub thiab ua cov khaub ncaws softer softer softer. Zaj duab xis tsim los ntawm HPMC nyob rau ntawm cov khaub ncaws tsis tuaj yeem txo qis kev sib txhuam ntawm cov nplais, tab sis kuj txhim kho qhov muag muag thiab du ntawm cov ntaub, yog li kev txhim kho hnav kev nplij siab. Cov yeeb yam no feem yog tsim nyog rau siv hauv kev ntxhua khaub ncaws tshuaj lossis ntaub softener formulations ua kom cov khaub ncaws smoother thiab softer tom qab ntxuav.
8. HypoallGerric thiab tawv nqaij-phooj ywg
Raws li cov tshuaj hloov kho cov tshuaj muab tau los ntawm cov pob cellulose ntuj, HPMC muaj cov tawv nqaij qis thiab yog li siv tau dav hauv kev saib xyuas tus kheej thiab cov khoom siv menyuam mos. Nyob rau hauv xab npum ua qauv, kev siv HPMC tuaj yeem txo cov tawv nqaij thiab cov khoom lag luam rhiab nrog daim tawv nqaij. Qhov no ua rau nws ib qho zoo tshaj plaws ntxiv rau ntau pawg neeg sib txawv, nce kev nyab xeeb ntawm cov xab npum.
Daim ntawv thov ntawm HPMC hauv cov tshuaj ntxuav ua noj ua haus tsis txwv rau ib qho tuab thiab ua kom muaj zog. Nws txhim kho cov kev ua tau zoo tag nrho thiab cov neeg siv kev xab npum nrog nws cov dej ua kua dej zoo, ua npuas dej ruaj khov thiab kev tiv thaiv ua npuas ncauj. Los ntawm kev ua kom ruaj khov ntawm cov mis, txhim kho cov ua npuas ncauj zoo, ua kom zoo dua ntaub softness thiab lwm yam kev txhim kho kom dav rau kev tsim qauv ntawm cov xab npum niaj hnub. Raws li cov neeg xav tau rau ib puag ncig cov neeg ua phooj ywg thiab cov khoom siv tsis zoo, xws li ntsuab thiab muaj lub luag haujlwm ntsuab ntxiv hauv kev lag luam xab npum yav tom ntej.
Lub Sijhawm Post: Oct-18-2024