Hydroxypropyl Methylcellulose (HPMC) yog cov khoom siv polymer uas siv dav hauv cov khoom siv hauv tsev, tshwj xeeb tshaj yog nyob rau hauv cov nplais nplaum, pobzeb grouts thiab lwm yam khoom siv cement. Nws lub luag haujlwm tseem ceeb hauv cov khoom no suav nrog kev ua kom tuab, tuav dej, txhim kho kev tsim kho thiab ua kom muaj zog sib txuas.
1. Thickening nyhuv
HPMC muaj peev xwm thickening zoo heev, uas ua rau nws los kho cov kua dej thiab kev tsim kho ntawm cov ntaub ntawv hauv cov nplais nplaum. Los ntawm kev ua kom cov viscosity ntawm cov nplais nplaum, HPMC tuaj yeem tiv thaiv cov khoom los ntawm sagging, zawv zawg lossis ntws thaum siv, yog li ua kom ruaj khov ntawm kev tsim kho zoo. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau kev tsim cov vuas façade, vim tias thaum tsim lub façade, cov nplaum nplaum yog qhov cuam tshuam rau lub ntiajteb txawj nqus thiab ua rau sagging.
2. Dej tuav nyhuv
Lwm qhov tseem ceeb ntawm HPMC yog nws cov dej tuav tau zoo heev. Cov ntaub ntawv cement-based yuav tsum muaj qee qhov dej noo thaum tsim kho kom ntseeg tau tias cov tshuaj tiv thaiv dej ntawm cov cement tau ua tiav. HPMC tuaj yeem kaw cov dej noo zoo, ua kom ntev lub neej ntawm cov dej noo hauv cov khoom, thiab tiv thaiv kom tsis txhob ya raws los ntawm kev poob sai heev, tshwj xeeb tshaj yog nyob rau hauv ib qho chaw kub thiab qhuav. Kev txhim kho ntawm cov dej tuav tau tuaj yeem txo qhov tshwm sim ntawm cov kab nrib pleb, txhim kho lub zog sib txuas ntawm cov nplaum thiab cov txheej txheem hauv paus, thiab xyuas kom meej tias cov cement yog hydrated tag nrho, yog li txhim kho qhov kawg lub zog thiab durability.
3. Txhim kho kev tsim kho kev ua haujlwm
Qhov sib ntxiv ntawm HPMC tuaj yeem txhim kho kev tsim kho ntawm cov pobzeb nplaum thiab grouts. Ua ntej, nws tuaj yeem txhim kho lubricity ntawm cov khoom, ua rau lub trowel smoother thaum lub sij hawm tsim kho, txo cov kev tiv thaiv thiab adhesion thaum lub sij hawm tsim kho, thiab txhim kho kev tsim kho efficiency. Qhov thib ob, HPMC tuaj yeem txhim kho cov thixotropy ntawm cov khoom siv, uas yog, cov khoom siv tswj tau qhov sib xws thaum nws nyob ruaj khov, thiab ua kom yooj yim ntws thaum nws ntxhov siab, uas yuav pab kom yooj yim ntawm kev ua haujlwm thaum tsim kho.
4. Txhim kho kev sib raug zoo
Daim ntawv thov ntawm HPMC kuj tseem tuaj yeem txhim kho kev sib raug zoo ntawm cov nplais nplaum nplaum. Los ntawm kev tuav dej, HPMC ua kom cov dej ntws tag nrho ntawm cov cement, uas ncaj qha cuam tshuam rau kev txhim kho kev sib txuas ntawm lub zog. Tsis tas li ntawd, cov thickening thiab lubricating cuam tshuam ntawm HPMC tso cai rau cov nplaum yuav sib npaug rau sab nraum qab ntawm cov pobzeb thiab qhov chaw ntawm lub substrate, yog li ua tiav cov khoom sib xws thiab ruaj khov. Lub luag haujlwm ntawm HPMC no yog qhov tseem ceeb tshwj xeeb rau cov pobzeb loj lossis cov vuas uas muaj dej nqus dej tsawg.
5. Txhim khu kev tiv thaiv sagging
HPMC kuj tseem tuaj yeem txhim kho cov kev ua haujlwm ntawm cov nplaum nplaum thiab cov nplaum nplaum. Sagging yog hais txog qhov tshwm sim uas cov nplaum los yog grout swb downward vim lub ntiajteb txawj nqus thaum lub sij hawm tsim facade. Cov nyhuv thickening ntawm HPMC tuaj yeem tiv thaiv qhov tshwm sim no tau zoo thiab ua kom muaj kev ruaj ntseg ntawm cov khoom ntawm qhov chaw ntsug, yog li txo qhov muaj peev xwm ntawm kev tsim kho thiab rov ua haujlwm.
6. Txhim kho khov-thaw tsis kam
Rau qee cov khoom siv hauv tsev uas yuav tsum tau siv rau hauv qhov chaw uas muaj qhov kub thiab txias, HPMC kuj muaj qee qhov kev tiv thaiv khov-thaw. Qhov no txhais tau hais tias tom qab ntau lub voj voog khov-thaw, cov ntaub ntawv siv HPMC tseem tuaj yeem tswj tau qhov kev ua tau zoo thiab yuav tsis tawg lossis daim ntawv cog lus tsis ua haujlwm vim qhov kub thiab txias.
7. Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
Raws li cov tshuaj tsis muaj tshuaj lom thiab tsis muaj teeb meem, 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 hauv tsev niaj hnub. Nws tsis tso cov pa phem thiab yooj yim los daws cov khoom siv pov tseg, yog li nws tau siv dav thiab lees paub.
Hydroxypropyl methylcellulose (HPMC) plays ntau lub luag haujlwm tseem ceeb hauv cov ntawv thov pobzeb, suav nrog kev ua kom tuab, tuav dej, txhim kho kev tsim kho, txhim kho kev sib raug zoo, txhim kho kev ua haujlwm tiv thaiv sagging, thiab txhim kho khov-thaw. Cov khoom no txhim kho kev siv cov nplais nplaum thiab grouts, yog li ua kom muaj kev ruaj ntseg thiab 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 khoom siv hauv tsev niaj hnub.
Post lub sij hawm: Aug-16-2024