HydroxyPropyyl methylcellueculose (HPMC) yog ib qho khoom xyaw uas nquag muaj nyob hauv cov ntaub ntawv hauv tsev xws li hmoov ua hmoov. HPMC yog muab tau los ntawm cov nroj tsuag ntuj thiab tsis muaj tshuaj lom rau tib neeg lub cev thiab ib puag ncig. Nws cov khoom ua rau nws zoo tagnrho rau ntau daim ntawv thov, suav nrog cov hmoov STATY. Hauv tsab xov xwm no, peb yuav tham txog peb lub luag hauj lwm HPMC tseem ua si hauv cov hmoov putty.
1. Txhim Kho Cov Dej Ua Haujlwm
Ib qho ntawm cov luag haujlwm tseem ceeb ntawm HPMC hauv cov hmoov putty yog nws lub peev xwm los txhim kho cov dej khaws cia. Putty hmoov yog sib xyaw ntawm cov xis mas, xuab zeb thiab lwm yam ntxiv uas yuav tsum tau haus dej ua kom muaj dej muab tshuaj txhuam. Txawm li cas los xij, dej yaj sai sai thaum lub sijhawm sib xyaw thiab kev tsim kho, ua rau muaj kev tsim txom tsis zoo thiab tawg. HPMC pab daws cov teeb meem no los ntawm kev khi rau cov roj av thiab cov txheej txheem evaporation qeeb qeeb. Raws li ib tug tshwm sim, lub sijhawm nyob qis qis ntub mus ntev dua, txhim kho kev ua haujlwm thiab txo lub caij nyoog ntawm kev tawg. Txhim kho cov dej khaws cia tseem ua rau nws yooj yim dua kom ua tiav txoj kev du, txawm tias saum npoo.
2. Txhim kho cov khoom nplaum nplaum
Lwm qhov tseem ceeb ntawm HPMC hauv cov hmoov putty yog nws lub peev xwm los txhim kho kev sib koom ua ke. Putty hmoov feem ntau yog siv los sau qhov khoob ntawm cov chaw, kho cov kab nrib pleb thiab phab ntsa du. Yuav kom ua tiav cov hom phiaj no, putty xav tau cov nplaum zoo rau ntau qhov chaw, ob qho tib si ntxeem tau thiab tsis muaj qhov ntxeem. HPMC pab txhim kho cov hmoov nplaum ntawm cov nplaum ntawm kev ua ib zaj duab xis nyias nyias nyob rau saum npoo ntawm cov hmoov nplaum uas ua rau lub substrate. Zaj duab xis kuj pab txo cov hmoov av thiab ua kom muaj zog ntawm lub putty ib zaug nws dries. Txhim kho cov khoom sib khi ua rau cov hmoov txhuas putty rau ntau cov ntawv thov, suav nrog kev kho cov phab ntsa qub thiab tso cov khoob ntawm kev tsim kho tshiab.
3. Tswj tuab
Qhov thib peb tseem ceeb lub luag hauj lwm HPMc plays hauv cov hmoov putty yog nws lub peev xwm los tswj tuab. Putty hmoov yuav tsum tau yog ib qho kev sib xws los ua tiav cov nyhuv xav tau. Yog tias nws yog tuab heev, nws yuav nyuaj rau kev thov; Yog tias nws yog yuag dhau, nws yuav yooj yim tawg thiab ntsws thaum nws dries. HPMC ua raws li lub thickener los pab tswj lub thickness ntawm cov hmoov putty. Nws tsim cov tshuaj pleev ib ce gel nrog cov viscosity zoo uas tso cai rau lub putty mus rau ntawm lub npoo. Ib qho ntxiv, HPMC pab cov hmoov putty kom tau sib xyaw uayees thiab tiv thaiv clumping.
HPMC yog qhov tseem ceeb ntawm cov hmoov mov noj, thiab nws lub luag haujlwm tsis tuaj yeem dhau mus dhau. Nws ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov dej khaws cia, txhim kho cov khoom ua vaj tsev, thiab tswj cov tuab ntawm cov hmoov tawv. Cov khoom no ua rau cov hmoov putty txiav yooj yim siv, ua tau zoo thiab muaj zog, txo qhov xav tau kho lossis hloov. HPMC yog tsis muaj tshuaj lom thiab ib puag ncig phooj ywg, ua rau nws xaiv lub tsev kom muaj kev ruaj ntseg rau cov ntaub ntawv tsim tsev. Nrog rau cov kev zoo no, nws tsis muaj kev xav tsis thoob uas HPMC tseem yog cov khoom nrov hauv kev tso tseg thiab lwm yam khoom siv hauv tsev.
Lub Sijhawm Post: Feb-19-2025