Hydroxypropylmethylcellulose (HPMC) yog ib qho polymer uas siv tau ntau yam hauv ntau yam lag luam, suav nrog kev lag luam kev tsim kho. Hauv cov tshuab blasting mortars, HPMC ua ntau yam haujlwm tseem ceeb uas pab txhim kho kev ua haujlwm tag nrho, kev ua haujlwm tau zoo thiab kev ruaj khov ntawm cov mortar.
1. Kev Taw Qhia Txog Hydroxypropyl Methylcellulose (HPMC):
Hydroxypropyl methylcellulose yog ib qho cellulose ether tau los ntawm cov polymer cellulose ntuj los ntawm ntau yam kev hloov pauv tshuaj. Nws feem ntau siv ua cov khoom ua kom tuab thiab ruaj khov hauv ntau yam kev siv vim nws khaws dej, tsim zaj duab xis thiab nplaum.
2. Kev ua tau zoo ntsig txog HPMC thiab cov tshuaj khib nyiab pov tseg:
Kev khaws dej:
HPMC muaj cov khoom khaws dej tau zoo uas pab tiv thaiv kom tsis txhob poob dej sai sai los ntawm cov sib tov mortar. Qhov no tseem ceeb heev rau kev siv tshuab blasting, qhov twg kev tswj kom zoo thiab ua haujlwm tau zoo yog qhov tseem ceeb rau kev siv kom raug.
Kev hloov kho thickening thiab rheology:
HPMC ua haujlwm ua ib qho thickener thiab cuam tshuam rau cov khoom rheological ntawm cov mortar. Qhov no tseem ceeb heev rau kev siv tshuab sandblasting vim nws ua kom cov mortar lo rau ntawm qhov chaw thiab tswj tau qhov tuab uas xav tau.
Txhim kho kev sib txuas:
HPMC ua rau muaj kev sib txuas zoo dua los ntawm kev muab cov khoom sib xyaw ua ke uas nplaum thiab sib npaug. Qhov no yog qhov tseem ceeb hauv kev siv tshuab xuab zeb, qhov twg cov khoom sib xyaw yuav tsum tau lo rau ntau qhov chaw sib txawv, suav nrog kev siv ntsug thiab saum toj.
Teem sijhawm tswj:
Los ntawm kev hloov kho lub sijhawm teeb tsa ntawm cov mortar, HPMC tuaj yeem tswj tau cov txheej txheem tsim kho zoo dua. Qhov no yog qhov tseem ceeb rau kev siv tshuab blasting kom ntseeg tau tias cov mortar teeb tsa ntawm qhov nrawm zoo tshaj plaws kom ua tau raws li cov kev xav tau tshwj xeeb.
3. Cov txiaj ntsig ntawm kev siv HPMC hauv tshuab polished mortar:
Kev ua tau zoo dua:
HPMC ua rau cov mortar ua haujlwm tau zoo dua, ua rau nws yooj yim dua rau kev tuav thiab siv siv cov khoom siv tshuab tua hluav taws. Qhov no ua rau muaj kev ua haujlwm zoo thiab kev tsim khoom ntau dua thaum lub sijhawm tsim kho.
Txo qhov Sagging thiab Collapse:
Qhov xwm txheej thixotropic ntawm HPMC pab tiv thaiv kom tsis txhob muaj mortar sagging thiab slumping, uas yog qhov tseem ceeb tshwj xeeb hauv kev siv ntsug thiab saum toj kawg nkaus uas tswj tau qhov tuab xav tau yog qhov nyuaj.
Txhim kho qhov ruaj khov:
Cov khoom nplaum ntawm HPMC pab txhawb rau qhov ruaj khov ntawm cov mortar. Nws tsim kev sib txuas zoo nrog cov substrate, txhim kho kev ua haujlwm ntev ntawm cov mortar siv.
Kev ua tau zoo tas li:
Kev siv HPMC ua kom muaj kev sib xyaw ua ke thiab sib npaug, ua rau muaj kev ua tau zoo dua thiab txhim khu kev qha thaum lub sijhawm tua phom. Qhov kev sib xws no yog qhov tseem ceeb rau kev ua tiav qhov xav tau thiab kev ua kom ruaj khov ntawm cov qauv.
4. Cov lus qhia thiab kev ceev faj rau kev siv:
Kev tsim qauv sib xyaw:
Kev siv HPMC kom raug rau hauv cov khoom sib xyaw ua ke yog qhov tseem ceeb heev. Qhov no suav nrog kev ua kom zoo dua qhov kev tsim cov khoom sib xyaw kom ua tiav cov yam ntxwv xav tau, suav nrog kev ua haujlwm tau zoo, kev nplaum thiab kev tswj lub sijhawm teeb tsa.
Kev sib xws ntawm cov khoom siv:
Cov khoom siv tua phom yuav tsum sib xws nrog cov mortars uas muaj HPMC. Tej zaum yuav xav tau cov khoom siv tshwj xeeb kom ntseeg tau tias kev siv sib xws thiab ua tau zoo.
Kev Tswj Xyuas Zoo:
Yuav tsum tau ua cov kev ntsuas tswj xyuas zoo tsis tu ncua los saib xyuas kev ua haujlwm ntawm HPMC hauv cov tshuab blast mortars. Qhov no yuav suav nrog kev sim qhov sib xws, lub zog sib txuas thiab lwm yam khoom cuam tshuam.
5. Cov ntaub ntawv kawm thiab cov dab neeg ua tiav:
Tshawb nrhiav cov piv txwv tiag tiag ntawm kev siv HPMC zoo hauv cov tshuab mortars. Qhia txog cov haujlwm tshwj xeeb, cov teeb meem uas ntsib, thiab kev siv HPMC pab txhawb rau kev ua tiav ntawm qhov project.
6. Cov qauv thiab kev tsim kho tshiab yav tom ntej:
Kev tshawb fawb txuas ntxiv mus thiab kev txhim kho yav tom ntej uas cuam tshuam nrog kev siv HPMC hauv cov mortar uas siv tshuab tau tham txog. Qhov no yuav suav nrog cov qauv tshiab, cov yam ntxwv kev ua tau zoo dua, lossis lwm cov ntaub ntawv uas muaj cov txiaj ntsig zoo sib xws.
Lub sijhawm tshaj tawm: Lub Ib Hlis-10-2024