Cov hmoov ntawm putty hmoov feem ntau yog hais txog qhov tshwm sim uas muaj qhov tshwm sim los ua putting, uas yuav cuam tshuam rau lub zog uas muaj zog ntawm lub putty thiab lub durability ntawm txheej. Qhov no hmoov zoo sib xws nrog ntau yam, ib qho yog kev siv thiab ua tau zoo ntawm hydroxypropylulose (HPMC) hauv cov hmoov putty (HPMC) hauv cov hmoov zaub.
1. Lub luag haujlwm ntawm HPMC hauv cov hmoov putty
HPMC, raws li ib feem ntau siv additive, yog siv dav hauv cov khoom hauv tsev, suav nrog cov hmoov ua kom tiav, tshuaj khib, kua nplaum, thiab lwm yam Nws muaj zog suav nrog:
Thickening cov nyhuv: HPMC tuaj yeem nce cov hmoov putty, ua kom cov kev tsim kho kom zoo nkauj thiab zam kev swb lossis ntws ntawm cov hmoov txhuas thaum kev tsim kho.
Dej khaws cia: HPMC muaj cov dej ua kom zoo, uas tuaj yeem txuas ntxiv ntawm cov hmoov txhuas kom nrawm nrawm, ua rau muaj kev tawg lossis shrinkage.
Txhim kho Adhesion: HPMC tuaj yeem nce cov hmoov nplaum ntawm putty, yog li nws ua tau zoo dua rau ntawm phab ntsa lossis lwm yam tshwm sim, txo qhov tshwm sim ntawm cov teeb meem xws li poob.
Txhim kho kev tsim kho kev tsim kho: Ntxiv HPMC rau kev tsim kho hmoov tuaj yeem txhim kho kom zoo nkauj thiab muaj kuab yooj yim rau kev tsim kho, ua haujlwm smoother, thiab txo cov khib nyiab.
2. Vim li cas rau putty hmoov puldization
Putty Hmoov Marancerization yog qhov teeb meem uas muaj ntau yam nrog cov laj thawj nyuaj, uas yuav cuam tshuam nrog cov hauv qab no:
Cov teeb meem substrate: Cov dej nqus dej ntawm cov substrate yog qhov muaj zog heev, ua rau poob noo noo heev thiab ua rau muaj kev kub ntxhov tsis tiav, ua rau muaj kev kub ntxhov.
Putty mis teeb meem: Tus qauv tsis zoo ntawm cov hmoov uas tsis muaj txiaj ntsig, xws li xis mas thiab lwm yam), thiab lub zog.
Cov teeb meem kev tsim kho: kev tsim kho cov txheej txheem, cov huab cua siab kub lossis cov av noo yuav ua rau cov hmoov av tsis muaj zog rau pulverize thaum lub txheej txheem ua kom qhuav.
Tsis tas li kev txij nkawm: tsis ua tiav los tswj cov putty nyob rau hauv lub sij hawm tom qab kev tsim kho lossis ua ntej pib mus rau cov hmoov tom ntej yuav ua rau cov hmoov puty yam tsis tau qhuav.
3. Qhov kev sib raug zoo ntawm HPMC thiab pulverization
Raws li cov tuab thiab dej-khaws cov neeg sawv cev, kev ua haujlwm ntawm HPMC hauv cov hmoov putty muaj qhov cuam tshuam ncaj qha rau qhov zoo ntawm putty. Cov cawv ntawm HPMC ntawm hmoov yog qhov yog feem ntau tau cuam tshuam hauv cov hauv qab no:
(1) cov dej ua haujlwm
Cov hmoov ntawm cov hmoov putty feem ntau cuam tshuam nrog kev nrawm nrawm ntawm cov dej hauv lub putty. Yog tias HPMC ntau npaum li cas tsis txaus, cov hmoov tsis txaus, cov hmoov tsis txaus, cov txheej txheem kom nrawm dua thaum lub sijhawm ua kom qhuav, ua rau muaj hmoov saum npoo. Lub cuab yeej siv dej hauv HPMC pab kom muaj cov dej noo kom tsim nyog thaum lub sij hawm ziab thiab tiv thaiv kom tsis txhob muaj dej. Yog li ntawd, cov dej khaws cia ntawm HPMC yog qhov tseem ceeb los txo cov hmoov.
(2) tus cawv ntawm cov nyhuv thickening
HPMC tuaj yeem nce cov hmoov putty, kom cov putty tuaj yeem txuas tau ntxiv rau lub substrate. If the quality of HPMC is poor or it is used improperly, it will affect the consistency of the putty powder, making its fluidity worse, resulting in unevenness and uneven thickness during construction, which may cause the putty powder to dry too quickly locally, thereby ua rau hmoov. Tsis tas li ntawd, kev siv HPMC ntau dhau kuj yuav ua rau pom qhov saum npoo ntawm cov hmoov uas muaj zaub ua kom zoo dua tom qab kev tsim kho, cuam tshuam rau txheej nplaum nrog cov txheej thiab ua rau cov hmoov txhuas.
(3) Synergy nrog lwm cov ntaub ntawv
Hauv cov hmoov putty, HPMC feem ntau yog siv rau hauv kev sib xyaw ua ke nrog lwm cov khoom siv xis (xws li cances, gypsum) thiab fashsum) thiab cov hmoov av calcium (talcum hmoov). Tus nqi ntawm HPMC siv thiab nws lub synergy nrog lwm cov ntaub ntawv muaj kev cuam tshuam zoo ntawm kev ua tau tag nrho ntawm putty. Cov mis tsis tsim nyog yuav ua rau tsis muaj zog ntawm kev ua kom muaj hmoov ntawm cov hmoov txhuas thiab thaum kawg ua rau hmoov. Tsim nyog HPMC siv tau txhim kho kev ua tau zoo thiab lub zog ntawm kev ua kom muaj zog thiab txo cov teeb meem tsis muaj txiaj ntsig los ntawm cov khoom siv xis.
4. HPMC cov teeb meem zoo ua rau hmoov
Ntxiv rau tus nqi ntawm HPMC siv, qhov zoo ntawm HPMC nws tus kheej kuj tseem tuaj yeem cuam tshuam kev ua tau zoo ntawm cov hmoov putty. Yog tias qhov zoo ntawm HPMC tsis tau nce mus rau tus qauv, xws li cov dej tsis muaj zog me me, nws yuav cuam tshuam ncaj qha rau cov hmoov kom ua tau zoo thiab muaj zog thiab ua kom muaj kev pheej hmoo ntawm hmoov. Tsis yooj yim dua HPMC tsis yog nyuaj los muab cov dej khov khov thiab ua kom muaj cov teeb meem tuab, tab sis kuj tseem tuaj yeem ua rau muaj teeb meem thaum lub sijhawm ua kom qhuav. Yog li ntawd, xaiv HPMC zoo HPMC yog qhov tseem ceeb kom tsis txhob muaj cov teeb meem hmoov.
5. Cov nyhuv ntawm lwm yam ntawm hmoov
Txawm hais tias HPMC ua si lub luag haujlwm tseem ceeb hauv cov hmoov puty, hmoov feem ntau yog qhov tshwm sim ntawm kev sib xyaw ua ke ntawm ntau yam. Cov hauv qab no kuj tseem yuav ua rau cov hmoov:
Cov xwm txheej ib puag ncig: yog tias qhov kub thiab av noo ntawm cov kev tsim kho kom zoo thiab qis heev, nws yuav cuam tshuam cov nyhuv ziab thiab ua kom muaj cov hmoov nplaum kawg.
Kev tsis tsim nyog substrate: Yog tias lub substrate tsis huv los yog saum npoo ntawm substrate dej ntau dhau, nws yuav cuam tshuam rau cov hmoov nplaum ntawm cov hmoov uas muaj sia thiab ua kom hmoov.
Irrational Putty hmoov mis: ntau dhau los yog HPMC tsawg dhau los ntawm cov tshuaj xis, uas yuav ua rau cov hmoov nplaum tsis txaus thiab muaj zog ntawm cov hmoov uas muaj zaub mos, yog li ua rau hmoov.
Cov hmoov tshwm sim ntawm cov hmoov putty yog ze ze rau kev siv HPMC. Lub luag haujlwm tseem ceeb ntawm HPMC hauv cov hmoov putty yog dej khaws cia thiab ua tuab. Kev siv tsim nyog tuaj yeem tiv thaiv qhov tshwm sim ntawm cov hmoov. Txawm li cas los xij, qhov tshwm sim ntawm cov hmoov nyob ntawm tsis yog nyob rau HPMC, tab sis kuj yog cov lus ntawm putty, subttrate kev kho, thiab chaw tsim khoom. Txhawm rau kom tsis txhob muaj teeb meem ntawm cov hmoov, nws tseem yog qhov tseem ceeb los xaiv cov qauv kev tsim qauv zoo HPMC, kev tsim kho cov tshuaj tsim nyog thiab kev tsim kho kev tsim kho.
Lub Sijhawm Post: Kaum-15-2024