HPMC (Hydroxypropyl Methylcellulose)yog ib qho cellulose derivative uas yaj tau hauv dej uas siv dav hauv kev lag luam kev tsim kho, tshwj xeeb tshaj yog hauv cov mortars, coatings thiab adhesives. Nws lub luag haujlwm hauv kev siv tshuab txau mortar yog qhov tseem ceeb heev, vim nws tuaj yeem txhim kho kev ua haujlwm ntawm cov mortar, txhim kho kev nplaum, txhim kho kev ntws thiab ntev lub sijhawm qhib.
1. Txhim kho qhov fluidity thiab kev tsim kho kev ua tau zoo ntawm mortar
Ib qho ntawm cov haujlwm tseem ceeb tshaj plaws ntawm HPMC yog los txhim kho qhov fluidity ntawm cov mortar. Vim tias HPMC muaj cov dej solubility zoo, nws tuaj yeem tsim cov tshuaj colloidal hauv cov mortar, ua kom cov mortar sib xws, thiab ua rau nws sib xws thiab du thaum lub sijhawm tsim kho. Qhov no yog qhov tseem ceeb rau cov txheej txheem txau tshuab, uas xav tau qee qhov fluidity ntawm cov mortar kom txau rau ntawm phab ntsa nrog lub siab siab hauv cov khoom siv txau. Yog tias qhov fluidity ntawm cov mortar tsis txaus, nws yuav ua rau muaj teeb meem hauv kev txau, txheej txau tsis sib xws, thiab txawm tias txhaws ntawm lub nozzle, yog li cuam tshuam rau kev ua haujlwm zoo thiab zoo ntawm kev tsim kho.
2. Txhim kho qhov adhesion ntawm mortar
HPMC muaj cov khoom sib txuas zoo thiab tuaj yeem txhim kho qhov sib txuas ntawm cov mortar thiab txheej hauv paus. Hauv cov tshuaj tsuag mortar, qhov sib txuas zoo yog qhov tseem ceeb heev, tshwj xeeb tshaj yog thaum cov txheej txheem siv rau ntawm lub ntsej muag lossis lwm hom substrates.AnxinCel®HPMCtuaj yeem txhim kho qhov kev nplaum ntawm cov mortar rau ntawm qhov chaw thiab txo cov teeb meem shedding los ntawm cov yam ntxwv ib puag ncig (xws li qhov kub thiab txias hloov pauv). Tib lub sijhawm, HPMC kuj tseem tuaj yeem txhim kho qhov sib xws ntawm cov mortar thiab lwm yam khoom siv kom tsis txhob muaj kev sib cais ntawm cov txheej txheem los ntawm qhov sib txawv ntawm kev sib xws.
3. Txuas sijhawm qhib thiab tswj kev ua haujlwm ntawm kev tsim kho
Hauv kev tsim kho tshuab tsuag, kev ncua lub sijhawm qhib ntawm cov mortar yog qhov tseem ceeb rau qhov zoo ntawm kev tsim kho. Lub sijhawm qhib yog lub sijhawm txij li thaum cov mortar raug siv rau ntawm qhov chaw kom txog thaum nws qhuav, thiab feem ntau xav kom tus neeg ua haujlwm tsim kho kom muaj peev xwm hloov kho, txiav thiab hloov kho thaum lub sijhawm no yam tsis cuam tshuam rau kev ua haujlwm ntawm cov mortar. HPMC tuaj yeem ncua lub sijhawm qhib los ntawm kev nce qhov viscosity ntawm cov mortar thiab txo qhov dej evaporation. Qhov no tso cai rau lub sprayer ua haujlwm ntev dua thiab zam kev tawg ntawm qhov chaw lossis kev txau tsis sib xws los ntawm kev qhuav sai dhau.
4. Tiv thaiv kom tsis txhob muaj kev tawg thiab nag los
Hauv cov tshuaj tsuag tshuaj, vim yog kev thauj mus los thiab khaws cia ntev, tej zaum yuav muaj cov khoom me me hauv cov tshuaj, ua rau cov tshuaj tawg. HPMC muaj cov khoom siv ncua kev ua haujlwm zoo, uas tuaj yeem tiv thaiv cov khoom me me lossis lwm yam khoom hauv cov tshuaj los ntawm kev sib sau ua ke thiab tswj kom cov tshuaj sib xws. Qhov no yog qhov tseem ceeb tshwj xeeb los xyuas kom meej tias cov txiaj ntsig txau thiab cov tshuaj zoo. Tshwj xeeb tshaj yog hauv kev tsim kho loj, kev tswj kom muaj kev sib xws thiab ruaj khov ntawm cov tshuaj yog qhov tseem ceeb rau kev ua kom zoo ntawm kev tsim kho.
5. Txhim kho qhov khaws dej ntawm cov mortar
Ua ib qho tshuaj polymer uas yaj tau hauv dej, HPMC muaj zog khaws dej. Nws tsim ib daim nyias nyias hauv cov mortar, yog li ntawd txo cov dej noo evaporation. Cov khoom no tseem ceeb heev rau kev ua kom cov mortar noo thiab txo qhov tshwm sim ntawm cov kab nrib pleb. Tshwj xeeb tshaj yog nyob rau hauv qhov kub siab thiab qis-av noo ib puag ncig, mortar feem ntau qhuav sai thiab tawg. HPMC tuaj yeem txo qhov tshwm sim ntawm qhov xwm txheej no los ntawm kev txhim kho cov dej khaws cia ntawm mortar thiab xyuas kom meej tias cov mortar tau kho tag nrho thiab kho hauv lub sijhawm tsim nyog.
6. Txhim kho qhov tawg tsis kam thiab ua kom ruaj khov ntawm cov mortar
Vim tias HPMC tuaj yeem txhim kho qhov kev tuav dej thiab kev sib txuas ntawm cov mortar, nws kuj tseem tuaj yeem txhim kho qhov kev tiv thaiv kab nrib pleb thiab kev ruaj khov ntawm cov mortar. Thaum lub sijhawm txau tshuaj, qhov sib xws thiab kev ruaj khov ntawm cov txheej mortar yog qhov tseem ceeb rau kev tiv thaiv kab nrib pleb mus sij hawm ntev. Los ntawm kev txhim kho qhov kev sib koom ua ke thiab kev sib txuas ntawm qhov chaw ntawm cov mortar, AnxinCel®HPMC zoo txo qhov kev pheej hmoo ntawm cov kab nrib pleb los ntawm kev hloov pauv kub, kev sib tsoo ntawm cov qauv lossis lwm yam sab nraud, thiab txuas ntxiv lub neej ua haujlwm ntawm cov mortar.
7. Txhim kho qhov yooj yim thiab kev ruaj khov ntawm kev txau tshuaj
Thaum siv cov khoom siv tshuaj tsuag rau kev tsim kho, qhov fluidity, viscosity thiab stability ntawm cov mortar yog qhov tseem ceeb rau kev ua haujlwm ib txwm ntawm cov khoom siv. HPMC txo cov khoom siv tshuaj tsuag tawg thiab kev xav tau txij nkawm los ntawm kev txhim kho qhov fluidity thiab stability ntawm mortar. Nws kuj tseem tuaj yeem txo qhov teeb meem ntawm mortar deposition lossis clogging hauv cov khoom siv, kom ntseeg tau tias cov khoom siv ib txwm tswj kev ua haujlwm ruaj khov thaum lub sijhawm tsim kho mus sij hawm ntev.
8. Txhim kho qhov ua rau muaj kuab paug ntawm cov mortar
HPMCmuaj cov khoom tiv thaiv kev ua qias tuaj. Nws tuaj yeem tiv thaiv kev lo rau ntawm cov tshuaj lom neeg lossis cov pa phem hauv cov mortar thiab tswj kev huv ntawm cov mortar. Tshwj xeeb tshaj yog nyob rau hauv qee qhov chaw tshwj xeeb, mortar yooj yim cuam tshuam los ntawm kev ua qias tuaj sab nraud. Kev ntxiv ntawm HPMC tuaj yeem tiv thaiv kev lo rau ntawm cov pa phem no, yog li ua kom ntseeg tau tias kev tsim kho zoo thiab zoo nkauj.
Lub luag haujlwm ntawm HPMC hauv cov tshuaj tsuag mortar muaj ntau yam. Nws tsis yog tsuas yog txhim kho qhov fluidity thiab kev ua haujlwm ntawm cov mortar, tab sis kuj txhim kho kev nplaum, ntev lub sijhawm qhib, txhim kho kev khaws dej, txhim kho kev tiv thaiv kab nrib pleb thiab txhim kho lub peev xwm tiv thaiv kev ua qias tuaj, thiab lwm yam. Los ntawm kev ntxiv HPMC kom raug, kev ua haujlwm tag nrho ntawm cov mortar tuaj yeem txhim kho tau zoo heev, ua kom ntseeg tau tias qhov ruaj khov thiab kev siv mus sij hawm ntev ntawm cov mortar thaum lub sijhawm tsim kho. Yog li ntawd, HPMC yog siv dav hauv kev tsim kho vaj tse niaj hnub, tshwj xeeb tshaj yog hauv cov tshuaj tsuag mortar, qhov twg nws ua lub luag haujlwm tseem ceeb thiab tsis tuaj yeem hloov pauv tau.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-30-2024