Kev tsim kho-qibHydroxypropyl methylcellulose (HPMC)yog ib qho cellulose ether uas yaj tau hauv dej uas feem ntau siv. Nws qhov kev khaws cia dej zoo heev, ua kom tuab, thiab ruaj khov ua rau nws siv dav hauv cov ntaub ntawv tsim kho, tshwj xeeb yog phab ntsa putty. Raws li cov khoom siv tseem ceeb rau kev kho kom zoo nkauj hauv tsev, qhov ua haujlwm tau zoo thiab cov txheej txheem kawg ntawm phab ntsa putty cuam tshuam ncaj qha rau qhov zoo nkauj thiab kev ruaj khov ntawm cov tsev. Kev ntxiv HPMC tuaj yeem txhim kho kev ua tau zoo ntawm putty, ua rau kev tsim kho du thiab phab ntsa nto sib npaug dua.
1.Lub luag haujlwm tseem ceeb ntawm HPMC hauv kev tsim kho putty yog khaws dej. Putty yuav tsum tau khaws cia rau hauv qhov chaw noo noo thaum lub sijhawm tsim kho kom ntseeg tau tias nws ua haujlwm tau thiab lo rau. Tom qab yaj hauv dej, HPMC tsim cov hydrogel network uas tuaj yeem kaw cov dej noo thiab qeeb qeeb qhov evaporation, yog li ntawd ntev lub sijhawm qhib ntawm putty thiab muab sijhawm txaus rau cov neeg ua haujlwm tsim kho rau kev sib npaug thiab ua tiav thaum lub sijhawm thov. Tib lub sijhawm, kev khaws dej zoo kuj tiv thaiv putty los ntawm kev tawg lossis tev tawm yog tias nws qhuav sai dhau, ua kom ntseeg tau tias du thiab ruaj khov ntawm phab ntsa.
2.HPMC muaj cov khoom ua kom tuab thiab dai zoo heev. Cov hmoov putty feem ntau yuav dai tom qab sib xyaw nrog dej, ua cov pawg lossis dej stratification. HPMC ua rau cov viscosity ntawm cov dej ntau ntxiv, ua rau cov slurry putty sib npaug thiab ruaj khov, ua rau cov hmoov dai hauv dej thiab zam kev teeb tsa thiab teeb meem dai. Qhov no tsis yog tsuas yog pab txhawb kev siv ib zaug ntawm putty thaum lub sijhawm tsim kho tab sis kuj txo cov khib nyiab thiab txhim kho kev tsim kho kom zoo.
3.HPMC kuj tseem txhim kho qhov kev nplaum thiab kev ua haujlwm ntawm cov putty. Nws tsim cov qauv sib txuas tas mus li hauv cov slurry putty, ua rau muaj kev nplaum ntawm cov putty thiab qhov chaw substrate thiab txo cov hmoov thiab tev tawm thaum lub sijhawm tsim kho. Tib lub sijhawm, vim nws lubricity, HPMC ua rau cov putty du thiab yooj yim rau kev siv, txo qhov yuav muaj khawb lossis xav tias zoo li grainy, yog li txhim kho qhov du thiab kho kom zoo nkauj ntawm phab ntsa.
4.Hauv kev siv ua haujlwm, qhov ntau thiab qib viscosity ntawm HPMC siv yuav tsum tau xaiv kom zoo raws li cov qauv putty thiab qhov chaw tsim kho. Feem ntau, HPMC uas muaj viscosity tsawg yog siv rau hauv cov putty sib dua lossis plastering putty kom ntseeg tau tias yooj yim sib tov thiab daim ntawv thov du; thaum nruab nrab-rau-siab viscosity HPMC tuaj yeem xaiv rau cov putty tuab dua lossis leveling putty kom txhim kho kev khaws dej thiab cov khoom ncua. Ntxiv mus, qhov kub thiab txias thiab av noo ntawm qhov chaw tsim kho kuj cuam tshuam rau kev khaws dej ntawm HPMC, xav tau kev hloov kho kom haum rau cov koob tshuaj kom ntseeg tau tias ua haujlwm tau zoo nyob rau hauv ntau yam xwm txheej.
5.Qib kev tsim vaj tsevHPMCmuaj qhov zoo tseem ceeb hauv kev siv phab ntsa putty. Los ntawm kev txhim kho cov putty qhov khaws cia dej, cov khoom tuab, kev nplaum, thiab kev ua haujlwm tau zoo, HPMC tsis yog tsuas yog txhim kho kev tsim kho kom zoo xwb tab sis kuj ua kom muaj kev zoo nkauj thiab kev ruaj khov ntawm phab ntsa kawg. Hauv kev tsim kho niaj hnub no, HPMC tau dhau los ua cov khoom ntxiv tseem ceeb hauv cov qauv putty, ua lub luag haujlwm tseem ceeb hauv kev txhim kho qhov zoo ntawm cov ntaub ntawv tsim kho thiab kev tsim kho.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-19-2025