Cov nyhuv ntawm HPMC ntawm lub durability ntawm gypsum cug

Raws li cov khoom siv dav siv hauv kev tsim kho, gypsum tshuaj khib nyiab, lub suab rwb thaiv tsev, kev tiv thaiv ib puag ncig thiab lwm yam khoom. Txawm li cas los xij, gypsum tshuaj khib feem ntau yog cov teeb meem tsis tu ncua thaum siv kev tawg thiab ua kom tsis muaj txiaj ntsig, tab sis kuj cuam tshuam rau lub neej pabcuam ntawm txoj haujlwm. Txhawm rau txhim kho lub durability ntawm gypsum tshuaj khib, ntau cov kws tshawb nrhiav tau sim ua kom zoo rau nws txoj kev ua tau zoo los ntawm kev hloov kho cov khoom. Ntawm lawv, HydroxyPropyf methylcellose (HPMC), raws li ib qho kev sib xyaw ua dej ether, tau siv dav hauv gypsum kev ua haujlwm thiab ruaj khov ntawm lub cug.

1. Cov yam ntxwv ntawm HPMC
HPMC yog qhov ua kom muaj txiaj ntsig ntawm cellulose, uas muaj cov dej solubility zoo, thickening thiab adhesive thaj chaw los ntawm kev hloov kho tshuaj lom neeg. Nws cov qauv molecular muaj cov pab pawg hydroxypropyl thiab methyl pawg, tso cai rau nws los ua cov tshuaj khov kho hauv dej. HPMC feem ntau siv nyob rau hauv cov ntaub ntawv HPMC, tshwj xeeb tshaj yog ntxiv hpmc mus tshuaj khib, thiab lwm yam. Txhim kho cov kev ua tau zoo ntawm cov ntaub ntawv no.

2. Cov nyhuv ntawm HPMC ntawm kev tsim kho ntawm gypsum tshuaj
Kev tsim kho kev ua tau zoo ntawm gypsum tshuaj khib yog ib qho tseem ceeb hauv nws cov kav ntev. Kev tsim kho kev tsim kho zoo tuaj yeem txo qhov tsis sib xws thaum lub sijhawm tsim kho, txhim kho kev tsim kho, thiab ua kom cov kev sib xyaw ntawm cov tshuaj khib nyiab, yog li kev txhim kho nws qhov ntev. Raws li cov tuab thiab dej-khaws cov neeg sawv cev, HPMC ua si lub luag haujlwm tseem ceeb hauv Gypsum tshuaj khib:

Thickening nyhuv: HPMC tuaj yeem txhim kho lub viscosity ntawm gypsum tshuaj khib, ua kom cov teeb meem tsim kho tau los ntawm kev ua kom huv los yog qhuav dhau.

Dej khaws cia: HPMC muaj cov dej ua kom zoo tau txais kev sib xyaw ntawm cov dej tshuaj khib, thiab ua kom nws yooj yim dua rau kev thov thiab txiav thaum lub sijhawm tsim kho. Qhov no pab txo cov teeb meem tawg los ntawm kev ua haujlwm sai sai ntawm cov dej, li kev txhim kho lub compactness thiab tag nrho cov txheej txheem ntawm lub cug txheej.

3. Cov nyhuv ntawm HPMC ntawm lub durability ntawm gypsum cug
Lubricability yog ib qho ntawm cov ntsuas tseem ceeb ntawm gypsum tshuaj khib, uas yog ncaj qha cuam tshuam nrog nws cov kev pabcuam lub neej hauv cov haujlwm hauv lub neej. Lub durability ntawm gypsum cug feem ntau cuam tshuam los ntawm ntau yam xws li noo noo, hloov hauv cov av noo thiab av noo, thiab cov rog sab nraud. Qhov kev sib txuas ntawm HPMC txhim kho lub zog ntawm gypsum hauv cov hauv qab no:

3.1 Txhim kho cov tawg tsis kam
Hauv Gypsum tshuaj khib, cov kab nrib pleb yog ib qho tseem ceeb ntawm qhov cuam tshuam rau lub durability. Kev hloov kho nrawm nrawm ntawm cov dej tshuaj tua hluav taws lossis ntub-ntub-ntub dej yuav ua rau cov nplaim hluav taws xob thiab sab hauv ntawm lub cug cug. Cov dej khaws cov nyhuv ceev ntawm HPMC tuaj yeem ua kom qeeb qeeb ntawm evaporation ntawm dej thiab tiv thaiv kom muaj qhov tshwm sim ntawm cov kab nrib pleb. Nyob rau tib lub sijhawm, cov nyhuv tuab ntawm HPMC tseem tuaj yeem txhim kho cov nplaum ntawm txheej sib tov, thiab txo qhov xwm txheej ntawm cov nrib pleb.

3.2 Txhim kho kev nkag siab
Gypsum tshuaj khib feem ntau raug rau cov puag ncig vaum thaum siv tiag tiag. Yog tias nws nqus dej yuav muaj zog heev, noo noo nyob rau hauv cug tshuaj yuav maj mam nce ntxiv, ua rau kev o, teeling thiab lwm yam tshwm sim. Qhov kev sib txuas ntawm HPMC tuaj yeem txhim kho cov permeability tiv thaiv ntawm cov tshuaj khib thiab txo cov yaig ntawm cov qauv sab hauv ntawm cov tshuaj khib nyiab los ntawm dej. Cov dej ua kom huv kom ua rau lub tshuaj khib kom zoo dua tswj nws cov qauv kev ruaj khov thiab zam kev ua haujlwm tshwm sim los ntawm cov dej noo intrusion intrusion.

3.3 Txhim kho khov-thw kev tiv taus
Gypsum tshuaj khib feem ntau yog siv nyob rau sab nrauv phab ntsa lossis lwm qhov chaw uas muaj kev phom sij huab cua kom khov kho kom khov thiab yaj. Nyob rau hauv cov cheeb tsam txias, kev rov ua dua tshiab ntawm khov thiab yaj tau yooj yim ua cug ua paug. HPMC tuaj yeem txhim kho cov qauv ntawm cug thiab nce nws qhov ntom ntom ntom, yog li txhim kho nws cov khov-thaw kuj. Los ntawm kev txo cov dej noo ntxiv, HPMC txo cov kev puas tsuaj los ntawm kev nthuav dav thaum lub sijhawm khov-thaw mus.

3.4 Txhim kho kev tiv thaiv kev tiv thaiv kev ua haujlwm
Sij hawm dhau los, lub zog thiab durabable ntawm gypsum tshuaj yuav maj mam txo qis. Qhov sib ntxiv ntawm HPMC tuaj yeem ncua cov txheej txheem kev laus los ntawm kev txhim kho microstructure ntawm lub cug. HPMC Molecules tuaj yeem tsim zaj duab xis tiv thaiv kom txo qhov kev puas tsuaj rau lub chaw sib kho, thiab lwm yam ntxiv.

4. HPMC siv thiab kev ua tau zoo
Txawm hais tias HPMC ua si lub luag haujlwm tseem ceeb hauv kev txhim kho lub durability ntawm gypsum tshuaj khib, nws cov kev siv kuj yuav tsum tau muaj mob. Ntau dhau ntawm HPMC tuaj yeem ua rau lub cug ua paug yuav ua rau muaj kev ua kom zoo, cuam tshuam kev tsim kho kev tsim kho, thiab tseem muaj kev cuam tshuam tsis zoo thaum lub sijhawm siv tsis ntev thaum lub sijhawm siv tsis ntev thaum siv kev siv hluav taws xob ntev. Yog li ntawd, hauv cov ntawv thov siv, nws yog feem ntau tsim nyog los ua kom zoo rau kev siv HPMC raws li qhov tshwj xeeb cortrula thiab kev tsim kho. Feem ntau hais lus, nws yog qhov zoo tagnrho tswj kev siv HPMC ntawm 0.2% thiab 1%.

Raws li ib qho kev teeb tsa sib ntxiv, HPMC muaj qhov cuam tshuam zoo ntawm lub durability ntawm gypsum ntev. Nws tsis tuaj yeem txhim kho kev tsim kho ntawm cug, txuas lub sijhawm qhib tsis zoo, tab sis kuj txhim kho qhov kev pabcuam lub neej ntawm gypsum tshuaj. Hauv kev siv cov tswv yim, los ntawm kev tswj hwm tus nqi ntawm HPMC ntxiv thiab muaj peev xwm ua tau zoo thiab muaj peev xwm ua tau rau cov chaw tsim kev lag luam.