Hloov Kho Hydroxypropyl Methylcellulose (hloov kho HPMC)yog ib qho tseem ceeb polymer additive hauv cov ntaub ntawv siv hauv kev tsim kho, tshwj xeeb tshaj yog hauv cov tshuab mortar. Nws ntxiv optimizes kev ua tau zoo ntawm HPMC los ntawm kev siv lub cev lossis tshuaj lom neeg, yog li nws tuaj yeem muab kev ua tau zoo dua ntawm kev tsim kho, kev khaws dej, tiv thaiv kev sagging thiab kev sib txuas lus hauv cov haujlwm tsim kho.
1. Txoj kev ua haujlwm ntawm HPMC hloov kho
HPMC hloov kho yog cov cellulose ether uas tsis yog ionic. Nws ruaj khov nyob rau hauv ib puag ncig alkaline thiab muaj solubility zoo thiab dispersibility los ntawm kev hloov pauv ntawm hydroxypropyl thiab methyl pawg ntawm cov cellulose pob txha. Kev kho mob hloov kho feem ntau suav nrog:
Kev kho qhov chaw (piv txwv li: kev ua kom etherification, txhim kho kev yaj sai lossis kev sib kis);
Kev sib txuas ua ke (ua kom sib xws thiab khaws dej);
Kev hloov kho hydrophobic (txhim kho kev tiv thaiv kev sagging thiab dej tsis kam);
Kev kho mob kub (tswj qhov kub ntawm cov gel kom ua tau raws li qhov yuav tsum tau ua ntawm kev tsim kho), thiab lwm yam.
Los ntawm cov txheej txheem hloov kho no, HPMC yooj yim dua rau kev tawg hauv cov tshuaj khib kom tsim cov tshuaj sib xyaw ua ke, uas tuaj yeem kho cov khoom rheological, kev khaws dej thiab cov khoom tiv thaiv kev sagging ntawm cov tshuaj khib.
2. Lub luag haujlwm tseem ceeb ntawm HPMC hloov kho hauv kev tsim cov mortar
2.1. Txhim kho kev khaws dej kom zoo
HPMC uas tau hloov kho tsim cov qauv sib txuas peb-seem hauv cov mortar, ua kom zoo tiv thaiv kev poob dej. Qhov no yog qhov tseem ceeb tshwj xeeb hauv cov txheej txheem hydration cement, uas tuaj yeem ua kom cov cement tau hydrated tag nrho, txo qhov kev pheej hmoo ntawm kev ntsws thiab tawg, thiab txhim kho lub zog tom qab. Nws yog qhov tseem ceeb tshwj xeeb rau kev tsim kho hauv qhov kub thiab txias thiab qhuav.
2.2. Txhim kho kev ua haujlwm ntawm kev tsim kho
HPMC hloov kho muaj cov roj nplua nyeem zoo heev thiab ua rau cov mortar tuab dua, ua rau cov mortar yooj yim dua rau kev siv thiab khawb tom qab sib tov, txo qhov kev tiv thaiv ntawm cov cuab yeej siv hauv kev tsim kho thiab txhim kho kev ua haujlwm ntawm kev tsim kho. Nws yog qhov tsim nyog rau kev siv tshuab txau mortar, txhim kho kev nqus dej thiab kev tswj hwm.
2.3. Txhim kho kev ua haujlwm tiv thaiv kev sagging
Kev ua tau zoo tiv thaiv kev sagging yog qhov tseem ceeb rau cov txheej txheem tsim kho vaj tse xws li cov nplaum pobzeb thiab cov plaster mortars. Cov HPMC hloov kho tuaj yeem txhim kho qhov viscosity thiab thixotropy, yog li cov mortar muaj kev sib xws zoo hauv lub xeev static, zam kev plam tom qab thov, thiab xyuas kom meej qhov zoo ntawm kev tsim kho.
2.4. Txhim kho kev sib txuas thiab kev sib koom ua ke
HPMC uas tau hloov kho tuaj yeem txhim kho qhov kev sib txuas ntawm cov mortar thiab cov ntaub ntawv xws li lub hauv paus thiab cov vuas. Nws cov yam ntxwv ua zaj duab xis ua rau nws tsim tau ib txheej zaj duab xis yooj ywm rau ntawm qhov chaw ntawm cov mortar, ua kom muaj zog sib txuas ntawm cov interfacial. Tib lub sijhawm, nws txhim kho qhov kev sib koom ua ke ntawm cov mortar kom tiv thaiv kev tawg thiab delamination.
2.5. Kho qhov sib xws thiab kev ntws dej
Cov txheej txheem tsim kho sib txawv muaj cov kev cai sib txawv rau qhov sib xws ntawm cov mortar. Cov HPMC hloov kho muaj qee qhov thixotropy, uas tso cai rau cov mortar kom tswj tau qhov fluidity zoo hauv qab kev ntxhov siab thiab sai sai rov qab ua kom sib xws thaum tsis hloov pauv, ua tau raws li cov kev cai tsim kho sib txawv xws li plastering, leveling, thiab caulking.
3. Cov ntawv thov tshwj xeeb hauv cov mortars tsev sib txawv
3.1. Cov tshuaj nplaum rau pobzeb
HPMC hloov kho tuaj yeem txhim kho qhov tiv thaiv kev plam thiab dej tuav ntawm cov nplais pobzeb thiab txhim kho lub peev xwm lo rau ntawm cov pobzeb loj. Tshwj xeeb tshaj yog nyob rau hauv cov qauv nyias nyias, nws ua kom yooj yim ntawm kev tsim kho thiab kev ruaj khov ntawm kev lo.
3.2. Cov tshuaj nplaum
Hauv cov tshuaj pleev plastering, cov HPMC uas tau hloov kho tshiab ua rau kev ua haujlwm yooj yim dua, txo cov teeb meem hollowing thiab tawg uas tshwm sim los ntawm kev ua dej sai sai, thiab ua kom muaj qhov chaw du thiab mos. Nws kuj tseem siv tau rau kev siv tshuab txau tshuaj pleev kom zoo dua qub.
3.3. Cov tshuaj nplaum hauv pem teb thiab cov tshuaj nplaum uas siv tau rau theem nws tus kheej
Kev ua kom nws tus kheej tiaj tus muaj qhov yuav tsum tau ua kom du thiab yooj yim ntxuav. HPMC uas tau hloov kho lawm muab kev ua kom du thiab yooj yim ntxuav yam tsis poob lub zog, thaum tswj kev sib cais dej thiab txhim kho qhov zoo ntawm qhov chaw thiab qhov tiaj tus tom qab tso.
3.4. Kho cov tshuaj nplaum
Rau cov kab nrib pleb me me thiab kho cov txheej nyias nyias, HPMC hloov kho tuaj yeem txhim kho lub zog sib txuas ntawm cov mortar thiab txheej hauv paus, txo qhov kev pheej hmoo ntawm kev tawg thiab hmoov av hauv theem tom qab, thiab nws tsim nyog rau kev kho kom ntxaws ntawm phab ntsa, choj, thiab lwm yam.
4. Cov lus qhia txog kev siv HPMC thiab kev xaiv cov tshuaj uas tau hloov kho
Hauv cov qauv tiag tiag, qhov ntau ntawm HPMC hloov kho ntxiv feem ntau yog 0.2% ~ 0.6% (raws li qhov hnyav tag nrho ntawm cov hmoov qhuav), thiab qhov ntau tshwj xeeb yuav tsum tau txiav txim siab raws li hom mortar, ib puag ncig kev tsim kho thiab kev ua tau zoo.
Cov kev xav tau khaws cia dej siab: xaiv HPMC hloov kho nrog qib siab hloov pauv thiab cov khoom me me;
Siab tiv thaiv kev sagging: xaiv cov viscosity siab, thixotropic hloov kho HPMC;
Kev tswj tus kheej lossis hauv pem teb: xaiv cov viscosity qis, hom dej ntws siab hloov kho HPMC;
Cov kev xav tau kev yaj sai (premixed mortar): xaiv qhov chaw kho tam sim ntawd HPMC hloov kho.
HPMC hloov kho ua lub luag haujlwm tseem ceeb hauv kev tsim cov mortar, tshwj xeeb tshaj yog hauv kev txhim kho kev khaws dej, kev ua haujlwm ntawm kev tsim kho, kev nplaum thiab kev ua haujlwm tiv thaiv kev sagging. Nws tsis yog tsuas yog ua kom zoo dua cov khoom siv kho tshuab thiab cov teebmeem ntawm kev tsim kho ntawm cov mortar, tab sis kuj muab lub hauv paus khoom siv khov kho rau cov thev naus laus zis niaj hnub no (xws li kev txau tshuab, kev tsim kho zaj duab xis nyias, thiab kev ua kom tiaj tus kheej). Yav tom ntej, nrog rau kev txhim kho cov ntaub ntawv tsim kho ntsuab thiab cov ntaub ntawv tsim kho siab, kev siv HPMC hloov kho hauv kev tsim kho mortar yuav dav dua thiab ua haujlwm tau zoo.
Lub sijhawm tshaj tawm: Lub Xya Hli-18-2025