Hydroxypropyl Methylcellulose (HPMC) yog ib qho tseem ceeb ntawm cellulose ether nrog ntau yam kev siv hauv kev tsim kho kev lag luam. Nws yog dej-soluble polymer compound tau los ntawm chemically modifying natural cellulose. Nws muaj cov dej zoo solubility, thickening, film-forming, bonding, lubrication thiab lwm yam ntxwv, yog li nws plays ib tug ntau yam ntawm lub luag hauj lwm tseem ceeb nyob rau hauv lub tsev cov ntaub ntawv.
1. Cement mortar thiab pob zeb
Hauv cov cement mortar thiab pob zeb, HPMC yog dav siv los ua cov thickener, dej retainer thiab binder. Nws lub luag haujlwm tseem ceeb suav nrog:
Thickening nyhuv: HPMC tuaj yeem ua kom cov viscosity ntawm cov cement mortar lossis pob zeb, yog li txhim kho kev tsim kho thiab ua kom yooj yim rau kev sib kis thiab ua haujlwm. Tsis tas li ntawd, cov mortar thickened tuaj yeem ua raws li cov substrate zoo dua thiab txo qhov muaj peev xwm ntawm hmoov thiab poob tawm.
Cov nyhuv tuav dej: HPMC muaj lub peev xwm tuav dej ruaj khov, uas tuaj yeem txo qhov poob dej hauv mortar lossis pob zeb, ua kom lub sijhawm hydration ntawm cov cement, thiab yog li txhim kho lub zog kawg thiab kav ntev. Qhov no feature yog tshwj xeeb tshaj yog tseem ceeb nyob rau hauv qhuav los yog kub ib puag ncig, raws li nws muaj peev xwm tiv thaiv cracking thiab tsis tiav hardening tshwm sim los ntawm qhuav ntxov ntxov ntawm cement.
Cov nyhuv los tiv thaiv sagging: Thaum tsim rau ntawm qhov chaw ntsug, HPMC tuaj yeem tiv thaiv mortar los yog txheej los ntawm zawv zawg, tswj cov tuab tuab thiab kev tiv thaiv zoo.
2. Cov nplaum nplaum
Hauv cov nplais nplaum, lub luag haujlwm ntawm HPMC yog qhov tseem ceeb heev. Nws tsis tsuas yog txhim kho cov adhesion ntawm cov nplaum, tab sis kuj txhim kho kev ua haujlwm thaum lub sij hawm tsim kho. Tshwj xeeb, nws yog manifested raws li nram no:
Txhim kho adhesion: HPMC txhim kho qhov adhesion ntawm cov pobzeb nplaum thiab cov vuas thiab cov substrates, ua kom muaj kev ruaj ntseg thiab ruaj khov ntawm cov vuas tom qab tso.
Txhim kho kev tsim kho: HPMC tuaj yeem ua rau lub sijhawm qhib ntawm pobzeb nplaum, uas yog, txuas ntxiv lub sijhawm ntawm txoj haujlwm ntawm cov vuas tuaj yeem hloov kho ua ntej cov nplaum yuav qhuav, uas yog ib qho tseem ceeb heev rau cov neeg ua haujlwm tsim kho thiab tuaj yeem ua kom tiav cov pobzeb tso.
Anti-slip: Rau cov vuas loj loj lossis thaum tsim ntawm qhov chaw ntsug, HPMC tuaj yeem tiv thaiv cov vuas luaj, yog li txhim kho kev tsim kho kom zoo.
3. Sab nrauv phab ntsa rwb thaiv tsev
Hauv cov kab hluav taws xob sab nraud, HPMC tseem ua lub luag haujlwm ntawm kev tuav dej, thickening thiab kev sib txuas. Cov txheej txheem rwb thaiv tsev sab nraud xav kom cov ntaub ntawv tsim kho kom muaj cov dej zoo khaws cia kom ntseeg tau tias cov khoom sib txuas yuav tsis poob vim dej ntau dhau thaum lub sij hawm tsim kho thiab kho cov theem. Qhov sib ntxiv ntawm HPMC txhim kho kev ua haujlwm, txheej thiab tawg tsis kam ntawm cov tshuaj khib, yog li txhim kho kev tsim kho kom zoo thiab kav ntev ntawm tag nrho cov rwb thaiv tsev.
4. Self-leveling cov ntaub ntawv hauv pem teb
Hauv cov khoom siv hauv pem teb tus kheej, HPMC ua lub luag haujlwm ntawm kev tswj cov dej ntws thiab txhim kho dej tuav. Cov khoom siv no yuav tsum tau ua kom tiav thaum lub sij hawm tsim kho, tab sis nws tsis tuaj yeem tsim cov sedimentation ntau dhau los yog stratification. Cov nyhuv thickening ntawm HPMC tuaj yeem tswj tau qhov sib xws ntawm cov khoom yam tsis muaj kev cuam tshuam cov dej ntws, kom ntseeg tau tias hauv pem teb saum npoo yog tiaj thiab du.
5. Cov hmoov nplej
HPMC kuj tau siv dav hauv cov hmoov putty rau sab hauv thiab sab nrauv ntawm cov tsev. Nws tuaj yeem txhim kho kev tsim kho thiab ua haujlwm ntev ntawm cov hmoov putty, txhim khu nws cov adhesion rau phab ntsa, thiab txhim kho lub sij hawm ziab thiab tawg tsis kam ntawm putty hmoov. Tshwj xeeb tshaj yog nyob rau hauv cov huab cua qhuav, HPMC tuaj yeem tiv thaiv qhov tawg los yog ntog tawm los ntawm cov dej sai sai ntawm cov hmoov putty.
6. Lwm yam kev siv
Ntxiv rau qhov kev siv tseem ceeb saum toj no, HPMC tseem ua lub luag haujlwm hauv lwm qhov chaw ntawm kev tsim kho, xws li cov khoom siv gypsum, cov txheej txheem dej tsis zoo, cov ntaub ntawv grouting, sealants, thiab lwm yam. Nws cov khoom siv ntau yam xws li thickening, dej tuav, thiab kev sib txuas ua rau nws. ib qho tseem ceeb additive nyob rau hauv lub tsev cov ntaub ntawv.
Hydroxypropyl methylcellulose muaj ntau yam kev siv tseem ceeb hauv kev tsim kho kev lag luam. Nws zoo heev txhim kho qhov zoo thiab kev tsim kho ntawm cov khoom siv hauv tsev los ntawm kev txhim kho kev tsim kho ntawm cov cement-based thiab gypsum-based cov ntaub ntawv, ncua sij hawm ua hauj lwm, txhim kho kev sib raug zoo, thiab txhim kho kev tawg. Yog li ntawd, daim ntawv thov kev cia siab ntawm HPMC hauv kev tsim kho niaj hnub yog dav heev, thiab nrog kev txhim kho txuas ntxiv ntawm kev tsim kho thev naus laus zis, lub luag haujlwm ntawm HPMC yuav dhau los ua qhov tseem ceeb.
Post lub sij hawm: Aug-19-2024