HPMC, lub npe tag nrho yog hydroxypropylulose, yog cov khoom siv sib xyaw ua ke xws li cov creat collhu, cov plag tsev qhuav thiab tus kheej theem. nyob rau hauv cov mis.
1. Dej khaws cia
HPMC muaj cov khoom siv zog tsis muaj zog heev thiab tuaj yeem txhim kho kev ua kom muaj peev xwm ua kom muaj peev xwm ua kom muaj peev xwm ua kom cov khoom noj. Kev cement yuav tsum tau muaj cov dej kom haum rau hauv txoj kev xav ntawm kev ua dej hiav txwv uas muaj lub sijhawm ua kom tawv nqaij ua kom tiav cov txheej txheem hydration. Qhov no tsis tsuas pab txhim kho lub zog thiab kev sib txuas ntawm cov cement, tab sis kuj tseem txo qhov kev tawg thiab txhim kho cov ntaub ntawv hauv tsev.
2. Txhim kho kev tsim kho kev tsim kho
HPMC muaj peev xwm txhim kho kev tsim kho kev tsim kho ntawm cov khoom noj qabent-raws li cov ntaub ntawv. Nws tuaj yeem muab cov tshuaj khib nyiab zoo thiab cov haujlwm ua haujlwm, ua kom yooj yim dua kis thiab du, li kev txhim kho kev tsim kho kev tsim kho kev tsim kho. Nyob rau tib lub sijhawm, HPMC tseem tuaj yeem txhim kho cov nplaum ntawm cug, tiv thaiv cov tshuaj khib nyiab los ntawm kev ntog lossis zawv zawg thaum cov txheej txheem tsim kho, thiab xyuas kom cov kev tsim kho zoo. Tsis tas li ntawd, HPMC kuj tau tswj hwm kev sib xws thiab thixotrospy ntawm cement cug, ua rau nws tsim thiab ua.
3. Cov nyhuv tuab
Raws li cov tuab, HPMC tuaj yeem nce cov viscosity thiab sib xws ntawm cugas cug thiab ua kom tiv thaiv los ntshav thiab ua kom huv ntawm cov tshuaj khib thaum kev tsim kho. Cov nyhuv tuab ua rau lub tshuaj khib feem ntau yog sag thaum kev tsim kho ntawm qhov chaw ntsug lossis sab saum toj chaw ruaj khov thiab muaj peev xwm. Nyob rau tib lub sijhawm, HPMC tseem tuaj yeem muab cug tshuaj tua ib qho tsis kam rau ntsug txaus, ua rau nws haum rau ntau yam chaw ua haujlwm nyuaj.
4. Txhim Kho Kev Tiv Thaiv
HPMC tuaj yeem txhim kho cov nrib pleb tsis kam nyob rau hauv cov khoom siv Maas-raws. Los ntawm kev nce dej khaws cia thiab viscosity ntawm lub tshuaj khib, hpmc tuaj yeem txo qhov kom qhuav shrinkage ntawm cemar cug thiab txo qhov tshwm sim ntawm kev tawg. Tshwj xeeb tshaj yog nyob rau hauv cov huab cua qhuav lossis chaw tsim khoom, HPMC cov nyhuv tawg yog qhov pom tseeb, pab txuas ntxiv lub neej pabcuam hauv tsev.
5. Txhim kho khov-thaw tsis kam
HPMC muaj qhov cuam tshuam zoo ntawm lub khov-thaw ua kom tsis kam ntawm cov khoom siv Maas-raws. Kev maj mam yog ib qho rau micro-nrib pleb thaum rov ua dua khov-thaws mus txog, ua rau muaj kev txo qis ntawm cov khoom siv dag zog lossis txawm tias muaj kev puas tsuaj. HPMC txhim kho lub ntom ntom thiab tawv ntawm xis ntxhib thiab txhim kho cov khoom khov kho, yog li txhim kho kev puas tsuaj thiab txhim kho lub tsev nyob hauv cov chaw txias.
6. Txhawb lub sijhawm
HPMC tuaj yeem txuas lub sijhawm qhib txuas ntxiv thiab lub sijhawm qhib lub sijhawm ntawm xiss cug, uas yog tshwj xeeb rau kev tsim kho loj lossis cov txheej txheem kev tsim kho. Lub sijhawm txuas ntxiv ua rau cov neeg ua haujlwm tsim khoom ntau dua los ua haujlwm, txo cov teeb meem zoo los ntawm kev tsim kho nruj. Nws kuj tseem yuav ua rau kom tsis txhob cuam tshuam rau kev sib raug zoo vim tias muaj dej ntau dhau ntawm lub tshuaj khib.
7. Txhim kho smoothness thiab zoo nkauj zoo
HPMC tuaj yeem txhim kho qhov smoothness thiab qhov zoo ntawm cement. Nws tuaj yeem ua rau lub cug kab ntsug saum npoo smoother thiab txo qhov tsis xws luag saum npoo av, yog li txhim kho qhov kev ua kom zoo nkauj zuag qhia tag nrho ntawm lub tsev. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem ua lub tshuaj khib nyiab muaj cov dej ua kom zoo thiab zam kev durness thiab ntxuav hniav dawb.
8. Txhim kho kev tawm tsam rau tshuaj lom neeg
HPMC tuaj yeem txhim kho cov tshuaj lom neeg corrosion tsis kam ntawm cov khoom siv Maas-raws. Nws cov dej zoo khaws cia thiab kev cog qoob loo tuaj yeem txo cov kev nkag ntawm cov khoom siv tsis zoo, yog li txhim kho cov khoom siv cov khoom lag luam corrosion. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov tuam tsev muaj lossis chaw hnyav, pab txuas ntxiv lub neej ntawm lub tsev.
9. Txhim Kho Kev Ua Haujlwm Zoo
HPMC tuaj yeem txhim kho txoj kev sib raug zoo ntawm xis mas cug thiab substrate, tshwj xeeb yog cov dej du lossis dej tsawg. Los ntawm kev txhim kho cohesion thiab viscos ua rau kev sib khib thiab cov hauv paus khoom siv zog, yog li kev txhim kho kom ruaj khov thiab kev nyab xeeb ntawm cov qauv tsim tsev.
10. Kev tiv thaiv ib puag ncig
HPMC yog cov tshuaj ntsuab ntsuab thiab ib puag ncig ua phooj ywg ntxiv nrog cov biodegradability thiab cov tshuaj lom tsawg. Ntxiv HPMC rau cov ntaub ntawv ua kom cov Maas-based yuav tsis muaj kev cuam tshuam zoo rau ib puag ncig thiab ua tau raws li kev tsim kho niaj hnub rau kev txhim kho kom ruaj khov.
HPMC muaj ntau yam haujlwm tseem ceeb hauv cov khoom siv caas-raws li, suav nrog cov dej cia, thickening, tawg tawm, thiab txhim kho adhesion. Cov qauv kev tsim kho no tsis tsuas yog txhim kho kev ua haujlwm thiab qhov kawg cug cug, tab sis kuj tseem txuas tau kev pab cuam lub neej, ua rau HPMC ib qho kev sib txawv ntawm cov khoom siv niaj hnub ua haujlwm.
Lub Sijhawm Post: Feb-17-2025