Cov putty siv dav hauv cov haujlwm tsim kho ua cov khoom siv los sau cov qhov khoob thiab cov qhov. Nws yog ib yam khoom siv tau ntau yam uas siv tau rau ntau yam kev siv, suav nrog kev kho phab ntsa, qab nthab, thiab pem teb. Hydroxypropyl methylcellulose (HPMC) yog ib qho tseem ceeb ntawm cov putty, muab nws nrog ntau yam khoom xav tau, suav nrog kev nplaum zoo heev, kev khaws dej thiab kev ua haujlwm tau zoo. Tsab xov xwm no yuav tshuaj xyuas daim ntawv thov ntawm HPMC hauv putty thiab tshuaj xyuas qee qhov teeb meem uas yuav tshwm sim hauv nws siv thiab lawv cov kev daws teeb meem.
Kev siv HPMC hauv putty
HPMC yog ib qho cellulose ether uas yaj tau hauv dej nrog cov khoom zoo heev rau kev tsim zaj duab xis. Nws yog siv los ua cov khoom ua kom tuab, nplaum, thiab stabilizer hauv ntau yam kev siv hauv kev lag luam thiab kev lag luam, suav nrog cov putties. Kev ntxiv HPMC rau hauv putty tuaj yeem txhim kho nws txoj kev ua haujlwm, kev ruaj khov thiab kev tiv thaiv dej. HPMC ua haujlwm los ntawm kev ua kom cov viscosity ntawm putty nce ntxiv, yog li pab nws lo rau ntawm qhov chaw zoo dua. Nws kuj tseem txhim kho qhov kev nthuav dav ntawm putty, ua rau nws yooj yim dua rau kev thov rau ntawm qhov chaw.
HPMC kuj siv ua ib qho khoom sib txuas hauv cov putty, pab cov khoom lo ua ke thiab ruaj khov. Nws kuj tiv thaiv cov putty kom tsis txhob tawg, ntsws lossis tawg. HPMC ua haujlwm ua ib qho khoom sib txuas, tsim ib qho thaiv ib puag ncig cov khoom me me hauv cov putty, tiv thaiv lawv kom tsis txhob tawg. Qhov no ua rau cov putty muaj zog dua thiab ua rau nws ruaj khov dua.
Ntxiv mus, ntxiv HPMC rau hauv putty tuaj yeem txhim kho nws cov dej tuav tau zoo. HPMC pab cov putty khaws cov dej noo thiab tiv thaiv nws kom tsis txhob qhuav sai dhau. Qhov no muab sijhawm ntau rau tus neeg siv los thov cov putty thiab xyuas kom meej tias nws lo rau ntawm qhov chaw kom raug.
Teeb meem nrog HPMC hauv Putty
Txawm hais tias HPMC muaj ntau qhov zoo thaum ntxiv rau putty, qee qhov teeb meem yuav tshwm sim thaum nws siv. Qee cov lus nug no suav nrog:
1. Kev nplaum tsis zoo: Thaum cov ntsiab lus HPMC hauv cov putty me dhau, kev nplaum tsis zoo yuav tshwm sim. HPMC yog lub luag haujlwm rau kev txhim kho kev nplaum ntawm cov putty rau ntawm qhov chaw. Yog tsis muaj HPMC txaus, cov putty yuav tsis lo rau ntawm qhov chaw kom zoo, ua rau nws nyuaj rau thov thiab ua rau nws tawg lossis chip.
2. Qhov nyuaj hauv kev sib tov: Ntxiv HPMC ntau dhau rau hauv cov putty yuav ua rau muaj teeb meem hauv kev sib tov. Lub viscosity ntawm HPMC yog qhov siab heev, thiab siv ntau dhau yuav ua rau cov putty tuab dhau thiab nyuaj rau sib tov kom huv si. Qhov no tuaj yeem ua rau qhov sib tov tsis sib npaug thiab tsis lo rau ntawm qhov chaw kom raug.
3. Lub sijhawm ziab: Qee zaum, HPMC yuav cuam tshuam rau lub sijhawm ziab ntawm putty. HPMC ncua lub sijhawm ziab ntawm putty, uas tej zaum yuav xav tau hauv qee qhov xwm txheej. Txawm li cas los xij, yog tias ntxiv HPMC ntau dhau, cov putty yuav siv sijhawm ntev kom qhuav, ua rau qeeb hauv kev tsim kho.
Kev daws teeb meem HPMC hauv Putty
1. Kev nplaum tsis zoo: Yuav kom tiv thaiv kev nplaum tsis zoo, yuav tsum ntxiv HPMC kom tsim nyog. Qhov tsim nyog yuav nyob ntawm hom nto uas yuav siv cov putty, tej yam kev mob ib puag ncig thiab cov yam ntxwv ntawm cov putty xav tau. Yog tias tsis muaj HPMC txaus hauv cov putty, yuav tsum ntxiv HPMC ntxiv kom txhim kho kev nplaum ntawm cov putty.
2. Qhov nyuaj hauv kev sib tov: Thaum sib tov cov putty uas muaj HPMC, nws yog qhov zoo tshaj plaws los ntxiv nws maj mam thiab sib tov kom huv si. Qhov no yuav ua kom ntseeg tau tias HPMC tau faib sib npaug thoob plaws hauv cov putty thiab tias cov putty tau sib tov kom huv si kom ua rau sib tov du thiab sib npaug.
3. Lub sijhawm ziab: Yuav kom tsis txhob muaj qhov putty ziab ntev dhau, yuav tsum ntxiv HPMC kom txaus. Yog tias muaj HPMC ntau dhau hauv putty, txo qhov ntxiv yuav pab kom lub sijhawm ziab luv dua. Tsis tas li ntawd, yuav tsum xyuas kom meej tias putty tau sib xyaw kom huv si kom tsis txhob muaj ib feem uas muaj HPMC ntau dhau.
Zuag qhia tag nrho, HPMC yog ib qho tseem ceeb ntawm putty, muab nws nrog ntau yam khoom zoo, suav nrog kev nplaum zoo heev, khaws dej, thiab ua haujlwm tau. Txawm hais tias qee qhov teeb meem yuav tshwm sim nrog kev siv HPMC, cov no tuaj yeem daws tau yooj yim los ntawm kev siv qhov ntau thiab sib tov kom huv si. Thaum siv kom raug, HPMC tuaj yeem txhim kho qhov zoo thiab kev ua tau zoo ntawm putty, ua rau nws yog ib qho tseem ceeb hauv cov haujlwm tsim kho.
Lub sijhawm tshaj tawm: Cuaj hlis-22-2023