HydroxyPropyyl methylcellulose (HPMC)yog cov tsis-ionic cellulose ionet petely dav siv rau hauv cov ntaub ntawv tsim kho, tshwj xeeb tshaj yog nyob rau hauv kev tsim ntawm cov khoom noj ntawm cov khoom noj. Nws lub luag haujlwm tseem ceeb suav nrog kev txhim kho cov dej khaws cia, cov khoom siv tuab thiab tsim cov khoom ntawm cov khoom siv thiab txhim kho cov khoom siv ntawm cov khoom.
1. Txhim kho cov dej ua haujlwm
HPMC muaj cov dej ua haujlwm zoo heev. Hauv cov ntawv tso cai ua ke, ua kom ntxov ntxov tuaj yeem cuam tshuam txog kev coasent tshuaj tiv thaiv ntawm cov cement, ua kom ntxov ntxov, thiab lwm yam teeb meem zoo. HPMC tuaj yeem tiv thaiv cov tawm ntawm cov dej noo los ntawm kev sib sau ua yeeb yaj kiab polymer polymer lub sijhawm. Qhov kev ua tau zoo no yog qhov tseem ceeb tshwj xeeb hauv cov kev tsim kho kub lossis kho kom qhuav thiab kho tau zoo ntawm cug, qhob thiab lwm yam khoom.
2. Txhim kho kev tsim muaj zog thiab ua haujlwm
HPMC yog cov tuab tuab heev. Ntxiv ib qho nyiaj tsawg ntawm HPMC rau cov khoom siv ua kom cov chaw ua haujlwm tso kom tau nce qib ntawm cov khoom siv viscosity ntawm cov khoom. Thickening pab tiv thaiv cov slurry los ntawm delaminating, sagging lossis ntshav thaum thov, thaum tseem ua cov khoom siv tau yooj yim dua thiab qib. Ib qho ntxiv, HPMC muab cov khoom siv zoo nkauj, txhim kho cov nplaum ntawm cov khoom siv hluav taws xob, thiab txo cov khoom pov tseg thaum kev tsim kho thiab kho tom haujlwm.
3. Txhim Kho Ntawm Kev Tawm Tsam Kuj
Cov khoom siv xissib yog nquag mus tawg vim dej evaporation thiab ntim shrinkage thaum lub sij hawm tawv. Cov khoom siv ceev ceev ntawm HPMC tuaj yeem txuas ntxiv rau theem yas ntawm cov khoom siv thiab txo qhov kev pheej hmoo ntawm shrinkage cracks. Tsis tas li ntawd, HPMC tau txais txiaj ntsig zoo tshaj plaws sab hauv kev ntxhov siab los ntawm kev nce qib kev ntxhov siab thiab hloov pauv ntawm cov khoom, ntxiv ntxiv qhov tshwm sim ntawm cov kab nrib pleb. Qhov no yog qhov tseem ceeb tshwj xeeb rau nyias-txheej mortars thiab tus kheej txoj kev ua haujlwm hauv pem teb.
4. Txhim kho lub durability thiab khov-thwawe
HPMCtuaj yeem txhim kho cov khoom siv tsis sib xws thiab txo cov porosity, yog li kev txhim kho cov khoom siv tsis tsim nyog thiab tshuaj lom neeg tsis kam. Nyob rau hauv ib puag ncig txias, khov-thaws cov khoom siv cuam tshuam ncaj qha cuam tshuam nrog lawv lub neej pabcuam. HPMC qeeb qeeb cia cov khoom ua puas ntawm cov khoom siv Maas ua ke thaum lub sijhawm khov-thaw mus thiab txhim kho lawv cov kev ua kom tau dej thiab txhim kho tsev neeg lub zog.
5. Txhim khu cov khoom siv kho tshuab
Txawm hais tias lub koom haum tseem ceeb HPMC tsis yog txhawm rau txhim kho lub zog, nws tsis ncaj ncees txhim kho cov khoom siv tshuab ntawm cov ntxhib. Los ntawm kev ua kom zoo ntawm cov dej ua haujlwm thiab ua haujlwm, HPMC Hydrates cov hloov kho cov khoom lag luam ntau dua thiab ua kom zoo dua cov khoom siv ntawm lub zog thiab qhov muaj zog yooj yim dua. Ib qho ntxiv, kev ua haujlwm ua haujlwm tau zoo thiab cov khoom sib txuas lus sib txuas lus pab txo cov kev ua haujlwm muaj kev pab txo cov teeb meem, yog tag nrho cov txheej txheem kev ua haujlwm ntawm cov khoom siv.
6. Cov ntawv thov piv txwv
HPMC tau dav siv hauv Masonry Cug, tus kheej txoj kab cug, cov nplaum ua ke vuas luaj thiab cov khoom lag luam hauv kev tsim kho. Piv txwv, ntxiv HPMC rau tej hub nplais nplaum tau txhim kho txhim kho lub zog uas muaj zog thiab siv sijhawm qhib; Ntxiv HPMC los plastering cug yuav txo kom los ntshav thiab sagging, thiab txhim kho cov nyam plastering thiab tawg tsis kam.
HydroxyPropyyl Methylcellulosetuaj yeem txhim kho kev ua tau zoo ntawm cov khoom noj yog cov khoom siv xis nyob hauv ntau yam. Nws cov dej khaws cia, thickening, tawg tsis kam thiab durability properties tau txhim kho kom zoo dua qub thiab ua haujlwm ntawm cov khoom siv Maas. Qhov no tsis tsuas pab txhim kho qhov project zoo, tab sis kuj txo kev tsim kho thiab kev txij nkawm. Nyob rau yav tom ntej, nrog kev txhim kho cov ntaub ntawv hauv tsev siv thev naus laus zis, cov ntawv thov kev cia siab ntawm HPMC yuav nthuav dav.
Lub Sijhawm Post: Nov-21-2024