Putty hmoov yog ib yam khoom tseem ceeb hauv cov khoom siv kho kom zoo nkauj hauv tsev. Nws yog tsuas yog siv los sau cov kab nrib pleb ntawm phab ntsa, kho phab ntsa tsis xws luag thiab du phab ntsa. Txhawm rau kom ntseeg tau tias cov hmoov putty zoo, kev tswj xyuas nruj yuav tsum tau ua thaum lub sijhawm tsim khoom. Hydroxypropyl methylcellulose (HPMC) yog ib qho ntawm cov khoom siv tseem ceeb hauv cov hmoov putty, thiab nws cov kev tswj xyuas zoo yog qhov tseem ceeb tshwj xeeb.
1. Lub luag hauj lwm ntawm hydroxypropyl methylcellulose hauv putty hmoov
HPMC yog non-ionic cellulose ether nrog zoo thickening, dej tuav, zaj duab xis-forming, sib txuas thiab lubrication zog. Hauv putty hmoov, lub luag haujlwm tseem ceeb ntawm HPMC suav nrog:
Kev tuav dej: HPMC tuaj yeem txhim kho cov dej khaws cia ntawm cov hmoov putty thiab tiv thaiv cov dej los ntawm evaporating sai heev, yog li ua kom cov txheej txheem ziab khaub ncaws thiab tsis txhob tawg thiab hmoov.
Cov nyhuv Thickening: HPMC tuaj yeem ua kom cov hmoov sib xyaw ua ke, ua rau nws muaj kev ua haujlwm zoo thiab muaj dej txaus thaum tsim kho.
Adhesion: HPMC tuaj yeem txhim kho qhov adhesion ntawm putty hmoov thiab cov ntaub ntawv hauv paus, txhim kho kev tsim kho kom zoo thiab kav ntev.
Lubricity: HPMC tuaj yeem txhim kho lubricity ntawm putty hmoov, txo kev tsim kho nyuaj, thiab txhim kho kev tsim kho.
2. Qhov tseem ceeb ntawm kev tswj kom zoo
Hauv cov txheej txheem tsim khoom ntawm HPMC rau putty hmoov, kev tswj kom zoo yog qhov tseem ceeb. Feem ntau yog reflected nyob rau hauv cov nram qab no yam:
Raw khoom xaiv thiab kuaj
Qhov zoo ntawm HPMC cov ntaub ntawv raw ncaj qha cuam tshuam rau kev ua haujlwm ntawm cov khoom kawg. Cov ntaub ntawv zoo cellulose yuav tsum raug xaiv thaum lub sij hawm tsim khoom kom ntseeg tau tias lawv purity thiab tshuaj stability.
Kev soj ntsuam nruj ntawm cov khoom siv raw yog ua los xyuas kom meej tias lawv ua tau raws li qhov yuav tsum tau ua. Cov ntsuas ntsuas tseem ceeb suav nrog viscosity, dej tuav tus nqi, cov ntsiab lus tshauv thiab cov ntsiab lus hnyav hlau.
Kev tswj cov txheej txheem ntau lawm
Cov txheej txheem tsim khoom ntawm HPMC yog qhov nyuaj thiab muaj ntau qhov sib txuas xws li tshuaj lom neeg cov tshuaj tiv thaiv, dissolution, pom, thiab ziab. Cov txheej txheem tsis sib xws ntawm txhua qhov txuas yuav tsum tau tswj nruj me ntsis kom ntseeg tau tias kev ruaj ntseg ntawm cov khoom zoo.
Tshwj xeeb tshaj yog nyob rau hauv cov tshuaj tiv thaiv theem, qhov kub thiab txias, siab thiab tshuaj tiv thaiv lub sij hawm yuav tsum tau precisely tswj los xyuas kom meej lub degree ntawm hloov thiab uniformity ntawm HPMC.
Cov khoom kuaj kev ua haujlwm
Tom qab kev tsim cov HPMC tiav lawm, yuav tsum tau ua ntau yam kev ntsuam xyuas kev ua tau zoo los xyuas kom meej tias nws ua tau raws li qhov yuav tsum tau ua rau kev tsim cov hmoov putty. Cov khoom ntsuas tseem ceeb suav nrog viscosity, dej tuav tus nqi, cov ntsiab lus tshauv, pH tus nqi, thiab lwm yam.
Rau cov khoom sib txawv ntawm cov khoom lag luam, kev ntsuas kev sib xws yuav tsum tau ua kom muaj kev ruaj ntseg thiab kev ntseeg tau ntawm lawv cov kev ua tau zoo.
Kev tswj ib puag ncig kev tsim khoom
Cov txheej txheem tsim khoom HPMC muaj qhov xav tau ib puag ncig siab. Nws yog ib qho tsim nyog los xyuas kom meej tias lub rhiav kev tsim khoom yog huv si, tsis muaj plua plav thiab muaj qhov kub thiab av noo tas li kom tsis txhob muaj kev cuam tshuam ntawm ib puag ncig ntawm cov khoom zoo.
Tsis tu ncua tswj thiab ntsuas cov cuab yeej tsim khoom kom ntseeg tau tias nws ua haujlwm li qub thiab zam cov khoom lag luam teeb meem tshwm sim los ntawm cov khoom siv tsis ua haujlwm.
Tsim kom muaj kev tswj xyuas zoo
Tsim kom muaj kev tswj xyuas kom zoo, suav nrog cov khoom siv raw khoom, kev tswj cov txheej txheem ntau lawm, kev soj ntsuam cov khoom tiav thiab kev pab cuam tom qab muag.
Los ntawm kev tswj xyuas cov ntawv pov thawj zoo xws li ISO9001, peb ua kom cov txheej txheem tsim khoom thiab kev tsim khoom thiab txhim kho kev lag luam kev sib tw ntawm peb cov khoom.
3. Kev tshuaj xyuas qhov tseeb ntawm kev tswj xyuas kom zoo
Txhawm rau kom nkag siab zoo dua qhov tseem ceeb ntawm HPMC kev tswj hwm zoo hauv kev tsim cov hmoov putty, peb tuaj yeem txheeb xyuas qhov ua tau zoo. Thaum lub sij hawm tsim cov hmoov putty, lub tuam txhab cov ntaub ntawv hauv tsev ua tsis tau raws li kev tswj hwm zoo ntawm HPMC, ua rau muaj teeb meem ntau hauv cov khoom, xws li cov dej tsis zoo, tawg, thiab tsis txaus adhesion. Tom qab kev txheeb xyuas qhov tob, nws tau pom tias cov teeb meem feem ntau nyob hauv cov hauv qab no:
Kev tshuaj xyuas cov khoom raw khoom tuaj tsis nruj, ua rau siv tsis tsim nyog HPMC.
Kev tswj tsis raug ntawm cov txheej txheem tsim khoom tsis raug thiab ntev dhau los lossis luv luv tshuaj tiv thaiv lub sijhawm cuam tshuam rau qib kev hloov pauv thiab kev ua haujlwm ntawm HPMC.
Kev ntsuas tsis tiav ntawm cov khoom tiav tsis tuaj yeem kuaj pom cov teeb meem hauv lub sijhawm, ua rau cov khoom lag luam tsis zoo ntws mus rau hauv kev ua lag luam.
Los ntawm cov xwm txheej saum toj no, peb tuaj yeem pom tias kev tswj hwm zoo ntawm HPMC hauv kev tsim cov hmoov putty yog qhov tseem ceeb heev. Tsuas yog los ntawm kev tswj hwm nruj heev tuaj yeem ua kom ntseeg tau tias kev ua haujlwm ruaj khov thiab txhim khu kev qha zoo ntawm putty hmoov thiab ua tau raws li kev lag luam xav tau.
Qhov tseem ceeb ntawm kev tswj kom zoo hauv kev tsim HPMC rau cov hmoov putty tsis tuaj yeem tsis quav ntsej. Los ntawm kev xaiv cov khoom siv raw thiab kev sim nruj, kev tswj cov txheej txheem tsim khoom, kev sim cov khoom lag luam, kev tswj hwm ib puag ncig thiab tsim kom muaj kev tswj hwm zoo, kev ruaj ntseg zoo thiab sib xws ntawm HPMC tuaj yeem ua kom ntseeg tau, yog li txhim kho tag nrho cov kev ua tau zoo thiab kev ua lag luam kev sib tw ntawm putty hmoov. . Cov lag luam yuav tsum tau xyuam xim rau kev tswj kom zoo, tsis tu ncua txhim kho cov txheej txheem ntau lawm, txuas ntxiv txhim kho cov khoom zoo, ua tau raws li cov neeg siv khoom xav tau, thiab yeej kev lag luam lees paub.
Post lub sij hawm: Lub Xya hli ntuj-31-2024