HydroxyPropyyl methylcellueculose (HPMC) yog universal txuas ntxiv siv hauv kev tsim kho kev tsim kho, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov pob zeb ua. Nws lub luag haujlwm hauv kev ua vaj tse yog multifaceted, cuam tshuam rau txhua qhov ntawm cov khoom siv thiab cov yam ntxwv. Txhawb nqa los ntawm cellulose, qhov compound no muaj cov khoom tshwj xeeb uas pab txhim kho kev ua haujlwm, lub zog thiab txhua yam zoo ntawm kev ua vaj tse.
1. Taw qhia HPMC:
1.1 cov qauv tshuaj:
Hydroxypropylencellulose yog ib nrab hluavtaws polymer muab tau los ntawm cellulose, lub ntuj polymer pom hauv tsob ntoo phab ntsa. Tus qauv tshuaj ntawm HPMC muaj cov saw hlau los txuas nrog methyl thiab hydroxyproprorropyl pawg. Cov kev sib tw ntawm cov chaw nyob no tuaj yeem hloov kho kom hloov cov khoom ntawm HPMC thiab yog li nws qhov kev ua tau zoo hauv pob zeb.
1.2 Cov Khoom Siv Lub Cev:
HPMC yog dej-soluble polymer nrog cov yeeb yaj kiab zoo tshaj plaws. Thaum dispersed hauv dej, nws tsim cov yeeb yaj kiab nyias uas pab hloov kho cov rheological thiab cov khoom siv tshuab ua khoom siv. Zaj duab xis tseem muaj cov khoom siv dej, tiv thaiv kev poob dej ntau dhau nyob rau thaum ntxov ntawm cov qhob puab.
2. Kev cuam tshuam rau cov txheej txheem:
2.1 Kev Tuav Dej:
Ib qho ntawm cov haujlwm tseem ceeb ntawm HPMC hauv cov pob zeb ua yog nws lub peev xwm los khaws dej. Raws li hydrophilic polymer, HPMC ua zaj duab xis nyias nyias ncig ntawm cov Maas hais tawm, txo cov dej evaporation thaum lub teeb tsa thiab kho cov theem. Qhov no ua kom tiav cov haujlwm ntawm cov qhob sib xyaw sib xyaw, tso cai rau kev sib xyaw ua ke thiab kev tso kawm tau zoo dua.
2.2 Txhim kho rheology:
HPMC ua raws li kev ntseeg rheology, cuam tshuam kev ntws thiab deformation tus cwj pwm ntawm cov pob zeb ua. Los kho tus nqi HPMC, cov sib xyaw sib xyaw ua kom ua tiav kom ua tiav qhov xav tau yam tsis cuam tshuam lwm yam. Qhov no yog qhov tshwj xeeb tshaj nyob rau hauv cov ntawv thov uas muaj kev tso dej lossis hliv qhob.
3. Kev cuam tshuam rau durability:
3.1 txo qis tus nqi:
Ntxiv HPMC mus ua pob zeb sib xyaw ua ke pab txo cov permeability ntawm cov khoom. Zaj duab xis-tsim cov khoom ntawm HPMC ua ib qho teeb meem uas txo cov kev txav ntawm cov dej thiab cov kev pheej hmoo ntawm cov kev pheej hmoo ntawm cov tshuaj tua kab mob thiab kev xeb hlau.
3.2 Txhim kho kom khov-thaw kuj:
HPMC txhim kho lub khov-thaw kev tawm tsam ntawm cov pob zeb ua los ntawm kev txhim kho nws cov qauv pore. Cov ntawv ua yeeb yaj kiab nyias HPMC ib ncig ntawm cov pajas txo qhov loj me thiab kev sib txuas ntawm cov capillary pores, yog li no tsis tshua muaj peev xwm ua kom khov-thaws kev puas tsuaj.
4. Daim ntawv thov ntawm HPMC hauv cov pob zeb:
4.1 Kev Ntsuas Yus Tus Kheej Ua Vaj Tse:
HPMC tau dav siv nyob rau hauv kev tsim cov kev ua raws tus kheej. Nws cov dej-khaws cia thiab rheology-kho cov khoom kom paub tseeb tias qhov sib xyaw kom tswj tau cov khoom uas yuav tsum tau ua raws li kev tiv thaiv kab mob thiab los ntshav ntau dhau.
4.2 Pobzeb Cov Ntawv Qhia thiab Mortars:
Hauv cov nplaum nplaum thiab cov neeg nplua nuj, HPMC ua raws li cov tuab thiab zwm muag. Nws txhim kho cov khoom sib txuas lus ntawm cov ntaub ntawv thiab muab kev sib thooj xav tau rau cov ntawv thov yooj yim.
4.3 rwb thaiv tsev sab nrauv thiab cov tshuab ua tiav (EIFS):
HPMC yog siv rau sab nrauv phab ntsa rwb thaiv tsev thiab cov tshuab topcoat los txhim kho cov addeCAAT ua haujlwm. Qhov no yuav pab txhim kho kev ua tau zoo tag nrho thiab kev muaj peev xwm ntawm EFS cov ntawv thov.
5. Sib xyaws nrog lwm tus admixtures:
5.1 Synergy nrog Superplasticizer:
HPMC tuaj yeem ua haujlwm Synergistically nrog superplasticizers kom txo cov ntsiab lus dej hauv pob zeb sib xyaw thaum tswj hwm kev ua haujlwm. Qhov kev sib xyaw ua ke no txhim kho lub zog thiab cov kav ntev ntawm cov ua haujlwm qhob.
5.2 kev sib raug zoo nrog retarding admixtures:
Yog tias tus retarders yog siv los ncua lub sij hawm teeb tsa lub sij hawm ntawm cov pob zeb ua kom zoo dua cov kev sib ntxiv no los ntawm kev ua haujlwm ntxiv ntawm cov khoom sib xyaw.
6. Kev txiav txim siab ib puag ncig:
6.1 biodegradity:
HPMC feem ntau suav tias yog tus phooj ywg zoo vim tias nws yog biodegradable. Cov yeeb yam no tau sib xws nrog kev loj hlob ntawm kev ua haujlwm ruaj khov thiab hauv eco hauv tsev.
6.2 Txo cov hlua carbon:
Siv hpmc hauv pob zeb ua cov sib xyaw ua ke pab txo cov hneev taw kev hloov kho ntawm kev tsim kho. Los ntawm kev txhim kho cov kev ua tau zoo thiab kev ua kom muaj zog ntawm cov pob zeb ua, cov qauv yuav xav tau kho tsawg dua lossis hloov pauv cov txiaj ntsig ib puag ncig ib puag ncig.
7. Xaus:
HydroxyPropy muag me methylcellulose plays ib lub luag hauj lwm tseem ceeb hauv kev txhawb nqa ntau yam ntawm kev ua vaj tse ua. Nws cov nyhuv ntawm kev ua haujlwm, durability thiab compatibility nrog lwm admixtures ua rau nws muaj txiaj ntsig ntxiv hauv kev tsim kho. Raws li qhov kev thov rau cov ntaub ntawv ua haujlwm siab thiab cov ntaub ntawv kom loj hlob ntxiv mus ua kev daws teeb meem uas pab txhim kho cov pob zeb ua kom zoo thiab lub sijhawm ntev tag nrho.
Lub Sijhawm Post: Feb-19-2025