Hydroxypropyl methylcellulose (HPMC) yog ib qho tseem ceeb uas tsis yog-ionic cellulose ether nrog kev siv dav hauv cov khoom siv hauv tsev. Nws yog tsim los ntawm tej yam ntuj tso polymer cov ntaub ntawv los ntawm ib tug series ntawm tshuaj kho mob. Nws muaj ntau yam khoom zoo thiab qhov zoo thiab tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom siv hauv tsev.
1. Cov yam ntxwv tseem ceeb ntawm hydroxypropyl methylcellulose
thickening nyhuv
Ib qho ntawm cov haujlwm tseem ceeb tshaj plaws ntawm HPMC hauv cov khoom siv hauv tsev yog thickening. Nws tuaj yeem ua kom cov viscosity ntawm cov khoom siv hauv tsev xws li tshuaj khib thiab cov coatings, ua rau lawv muaj peev xwm ua haujlwm tau zoo thiab tuav dej thaum siv. Los ntawm kev kho qhov ntau npaum li cas ntawm HPMC, kev tswj xyuas meej ntawm cov khoom siv viscosity tuaj yeem ua tiav kom tau raws li kev tsim kho sib txawv.
Kev tuav dej
HPMC muaj cov khoom tuav dej zoo heev thiab tuaj yeem tiv thaiv dej ntau dhau. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv qhov chaw qhuav thiab kub kub kom ntseeg tau tias cov mortar muaj dej txaus rau cov tshuaj tiv thaiv hydration thaum lub sij hawm kho, tsis txhob ziab thiab shrinkage, thiab txhim kho qhov kawg lub zog thiab durability ntawm cov khoom.
Lubricity
HPMC tsim cov tshuaj colloidal tom qab yaj hauv dej, uas muaj cov nyhuv lubrication zoo. Qhov no ua rau cov ntaub ntawv hauv tsev yooj yim dua rau kev thov thiab sib kis thaum siv, txhim kho kev tsim kho kom zoo thiab du nto. Tsis tas li ntawd, lubricity zoo tuaj yeem txo qhov hnav ntawm cov cuab yeej siv.
Kev ncua
HPMC tuaj yeem txhim kho lub peev xwm ncua kev ncua ntawm cov khoom hauv cov kua thiab tiv thaiv cov khoom delamination. Qhov no yog qhov tseem ceeb heev thaum tsim thiab siv cov ntaub ntawv xws li mortar thiab coatings los xyuas kom meej qhov sib xws thiab ruaj khov ntawm cov khoom thiab qhov sib xws ntawm kev tsim kho.
Zaj duab xis tsim cov cuab yeej
HPMC muaj cov yeeb yaj kiab zoo thiab tuaj yeem tsim cov yeeb yaj kiab zoo tom qab ziab. Cov yeeb yaj kiab no muaj qee qib ntawm lub zog thiab elasticity, thiab tuaj yeem tiv thaiv qhov chaw ntawm cov khoom siv zoo thiab txhim kho nws cov hnav tsis kam thiab tawg tsis kam.
2. Qhov zoo ntawm hydroxypropyl methylcellulose hauv cov khoom siv hauv tsev
Txhim kho kev tsim kho kev ua haujlwm
Vim tias HPMC lub thickening, dej tuav, lubrication thiab lwm yam khoom, lub tsev cov ntaub ntawv ntxiv nrog HPMC qhia tau hais tias ua hauj lwm zoo dua thaum lub sij hawm tsim kho. Piv txwv li, hauv plastering mortar, HPMC tuaj yeem txhim kho qhov adhesion thiab sag tsis kam ntawm mortar, ua rau cov mortar yooj yim rau kev khiav lag luam thiab txo cov khib nyiab thiab rov ua haujlwm dua.
Txhim kho cov khoom siv
HPMC tuaj yeem txhim kho lub zog thiab ua haujlwm ntev ntawm cov khoom siv hauv tsev. Nws cov dej tuav tau zoo ua kom ntseeg tau tias cov tshuaj tiv thaiv dej ntawm cov tshuaj khib nyiab tau ua tiav, yog li txhim kho lub zog thiab tawg tsis kam ntawm cov khoom. Nyob rau tib lub sijhawm, cov yeeb yaj kiab-tsim thiab tshem tawm cov khoom ua rau saum npoo ntawm cov khoom smoother thiab smoother, txhim kho nws cov hnav tsis kam thiab cov nyhuv zoo nkauj.
Txhim kho ib puag ncig kev ua haujlwm
HPMC yog nonionic cellulose ether uas yog ib puag ncig tus phooj ywg. Kev siv HPMC hauv cov khoom siv hauv tsev tuaj yeem txo qis kev siv tshuaj lom neeg ntxiv thiab txo cov pa phem ib puag ncig. Tsis tas li ntawd, cov dej tuav tau zoo thiab lubricity ntawm HPMC tuaj yeem txo qis cov cement, ntxiv kom txo tau cov pa roj carbon emissions thiab kev siv cov peev txheej.
Txhim kho economic efficiency
HPMC tuaj yeem txhim kho kev tsim kho kom zoo thiab txo cov sij hawm tsim kho thiab cov nqi zog. Nws cov dej tuav tau zoo thiab cov khoom raug tshem tawm kuj tuaj yeem txo cov khoom siv thiab pov tseg thiab txhim kho kev siv cov khoom siv. Cov no tuaj yeem txo cov nqi tsim kho thiab txhim kho cov txiaj ntsig kev lag luam.
Hloov tau
HPMC yog siv dav hauv ntau hom khoom siv hauv tsev, suav nrog cov tshuaj khib nyiab qhuav, cov hmoov qhuav, cov txheej txheem, cov nplaum nplaum, thiab lwm yam.
Raws li cov khoom siv tseem ceeb hauv tsev, hydroxypropyl methylcellulose tso siab rau nws cov thickening zoo heev, dej tuav, lubrication, ncua kev kawm ntawv thiab zaj duab xis-tsim cov khoom los txhim kho kev tsim kho, txhim kho cov khoom siv, txhim kho ib puag ncig kev ua tau zoo thiab txhim kho cov txiaj ntsig kev lag luam. Nws tau qhia qhov zoo ntawm lwm yam. Nrog kev txhim kho txuas ntxiv ntawm kev tsim kho kev lag luam thiab kev xav tau ntau ntxiv rau cov ntaub ntawv ua tau zoo thiab ib puag ncig zoo, daim ntawv thov kev cia siab ntawm HPMC hauv cov khoom siv hauv tsev yuav dav dua.
Post lub sij hawm: Lub Xya hli ntuj-26-2024