Hydroxypropyl Methylcellulose (HPMC) yog ib qho polymer compound siv dav hauv cov ntaub ntawv siv hauv kev tsim kho, tshwj xeeb tshaj yog hauv cov nplaum pobzeb, cov grout pobzeb thiab lwm yam khoom siv cement. Nws lub luag haujlwm tseem ceeb hauv cov khoom no suav nrog kev ua kom tuab, khaws dej, txhim kho kev ua haujlwm ntawm kev tsim kho thiab ua kom muaj zog sib txuas.
1. Cov nyhuv tuab
HPMC muaj peev xwm ua kom tuab zoo heev, uas ua rau nws tuaj yeem kho qhov fluidity thiab cov khoom siv hauv cov nplais pobzeb. Los ntawm kev ua kom cov nplaum pobzeb viscosity ntau ntxiv, HPMC tuaj yeem tiv thaiv cov khoom kom tsis txhob sagging, swb lossis ntws thaum lub sijhawm tsim kho, yog li ua kom ntseeg tau tias qhov zoo ntawm kev tsim kho ruaj khov. Qhov no tseem ceeb heev rau kev tsim kho cov vuas façade, vim tias thaum tsim kho ntawm lub ntsej muag, cov nplaum yuav yooj yim rau lub ntiajteb txawj nqus thiab ua rau sagging.
2. Cov nyhuv ntawm kev khaws dej
Lwm lub luag haujlwm tseem ceeb ntawm HPMC yog nws qhov kev ua tau zoo heev ntawm kev khaws dej. Cov ntaub ntawv ua los ntawm cement yuav tsum tswj hwm qee qhov dej noo thaum lub sijhawm tsim kho kom ntseeg tau tias cov tshuaj tiv thaiv dej ntawm cement tau ua tiav tag nrho. HPMC tuaj yeem kaw cov dej noo, ua kom lub sijhawm muaj dej noo hauv cov ntaub ntawv ntev dua, thiab tiv thaiv cov dej noo kom tsis txhob poob sai dhau, tshwj xeeb tshaj yog nyob rau hauv qhov chaw kub thiab qhuav. Kev txhim kho ntawm kev khaws dej tuaj yeem txo qhov tshwm sim ntawm cov kab nrib pleb, txhim kho lub zog sib txuas ntawm cov nplaum thiab txheej hauv paus, thiab xyuas kom meej tias cov cement tau hydrated tag nrho, yog li txhim kho lub zog kawg thiab kev ruaj khov.
3. Txhim kho kev ua haujlwm ntawm kev tsim kho
Qhov ntxiv ntawm HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov nplais pobzeb thiab cov grouts. Ua ntej, nws tuaj yeem txhim kho lubricity ntawm cov khoom, ua rau lub trowel du thaum lub sijhawm tsim kho, txo qhov tsis kam thiab lo thaum lub sijhawm tsim kho, thiab txhim kho kev ua haujlwm ntawm kev tsim kho. Qhov thib ob, HPMC kuj tseem tuaj yeem txhim kho thixotropy ntawm cov khoom, uas yog, cov khoom khaws cia qee qhov sib xws thaum nws nyob ruaj khov, thiab yooj yim dua rau ntws thaum nws raug ntxhov siab, uas pab kom yooj yim ntawm kev ua haujlwm thaum lub sijhawm tsim kho.
4. Txhim kho lub zog sib txuas
Daim ntawv thov ntawm HPMC kuj tseem tuaj yeem txhim kho lub zog sib txuas ntawm cov nplais pobzeb. Los ntawm kev khaws dej, HPMC ua kom muaj dej noo tag nrho ntawm cov cement, uas yog ncaj qha cuam tshuam nrog kev txhim kho lub zog sib txuas. Tsis tas li ntawd, cov nyhuv thickening thiab lubricating ntawm HPMC tso cai rau cov nplaum kom sib npaug rau sab nraub qaum ntawm cov pobzeb thiab qhov chaw ntawm lub substrate, yog li ua tiav qhov sib txuas zoo dua thiab ruaj khov. Lub luag haujlwm no ntawm HPMC yog qhov tseem ceeb tshwj xeeb rau cov pobzeb loj lossis cov pobzeb uas nqus dej tsawg.
5. Txhim kho kev ua haujlwm tiv thaiv kev sagging
HPMC kuj tseem tuaj yeem txhim kho qhov kev ua tau zoo tiv thaiv kev sagging ntawm cov nplaum thiab grouts. Sagging txhais tau hais tias qhov xwm txheej uas cov nplaum lossis grout swb mus rau hauv qab vim yog lub ntiajteb txawj nqus thaum lub sijhawm tsim kho lub ntsej muag. Qhov cuam tshuam ntawm HPMC tuaj yeem tiv thaiv qhov xwm txheej no thiab xyuas kom meej tias cov khoom siv ruaj khov ntawm qhov chaw ntsug, yog li txo qhov ua tau ntawm kev tsim kho tsis zoo thiab rov ua haujlwm.
6. Txhim kho kev tiv thaiv khov-thaw
Rau qee cov khoom siv hauv tsev uas yuav tsum tau siv rau hauv qhov chaw kub qis, HPMC kuj muaj qee qib ntawm kev tiv thaiv khov-thaw. Qhov no txhais tau tias tom qab ntau lub voj voog khov-thaw, cov ntaub ntawv siv HPMC tseem tuaj yeem ua tau zoo thiab yuav tsis tawg lossis sib txuas tsis ua haujlwm vim qhov kub qis.
7. Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
Ua ib yam tshuaj lom neeg uas tsis muaj tshuaj lom thiab tsis ua rau muaj kev phom sij, kev siv HPMC hauv kev tsim kho kuj ua tau raws li kev tiv thaiv ib puag ncig thiab kev nyab xeeb ntawm cov khoom siv niaj hnub. Nws tsis tso cov pa phem thiab yooj yim rau kev tswj cov khib nyiab tsim kho, yog li nws tau siv dav thiab lees paub.
Hydroxypropyl methylcellulose (HPMC) ua ntau lub luag haujlwm tseem ceeb hauv kev siv pobzeb, suav nrog kev ua kom tuab, khaws dej, txhim kho kev ua haujlwm ntawm kev tsim kho, txhim kho lub zog sib txuas, txhim kho kev ua haujlwm tiv thaiv kev poob qis, thiab txhim kho kev tiv thaiv khov-thaw. Cov yam ntxwv no txhim kho kev siv cov nplaum pobzeb thiab cov grouts, yog li ua kom ntseeg tau tias kev ruaj khov thiab kev ua haujlwm ntev ntawm kev tsim kho zoo. Yog li ntawd, HPMC tau dhau los ua qhov tseem ceeb thiab tseem ceeb ntxiv rau hauv cov ntaub ntawv tsim kho niaj hnub.
Lub sijhawm tshaj tawm: Lub Yim Hli-16-2024