HPMC li cas rau Gypsum Plaster?

1 Taw qhia
HPMC (HydroxyPropy cellulose cellulose) yog cov neeg tsis muaj ntaub ntawv hauv xov tooj rau cov khoom siv hauv tsev, suav nrog gypsum plaster. Raws li kev ua haujlwm tseem ceeb ntxiv, HPMC txhim kho kev ua cov khoom thiab kev thov cov yam ntxwv ntawm gypsum plasters.

2. Cov khoom tseem ceeb ntawm HPMC
HPMC yog cov polymer compound tau los ntawm kev hloov tshuaj lom neeg ntawm cov cellulose ntuj. Nws cov nta suav nrog:

Dej Solubility: HPMC tuaj yeem yaj tuaj sai sai hauv dej txias, sib sau kom meej lossis me ntsis milky tov.
Thickening: tuaj yeem ua kom muaj kev tiv thaiv viscosity ntawm kev daws teeb meem.
Gelling: HPMC muaj cim cov cua thermal gelling cov khoom, thiab cov kev daws teeb meem regains fluidity tom qab txias.
Dej khaws cia: hauv cov ntaub ntawv tsim tsev, nws tuaj yeem txhim kho cov dej tuav tseg ntawm cov ntaub ntawv thiab txuas ntxiv lub sijhawm ua haujlwm.
Lubricity: Txhim kho cov khoom siv lub zog ntawm cov khoom los pab txhawb kev tsim kho thiab kev siv.

3. Lub luag haujlwm ntawm HPMC hauv Gypsum Plaster
3.1 Txhim kho cov dej sib tuav dej
HPMC nce cov dej-tuav lub peev xwm ntawm gypsum plaster thiab txo cov dej evaporation sai sai. Qhov no yog qhov tseem ceeb heev rau kev tsim kho thiab kev tsim ntawm gypsum plaster, raws li dej txaus ua kom qhuav ntawm cov plaster thiab zam kev shrinkage thiab nrib pleb.

3.2 Txhim kho adhesion
HPMC txhim kho txoj kev sib txuas ntawm stucco thiab substrate. Qhov no pab txhim kho lub zog ntawm lub zog ntawm cov plaster thiab tiv thaiv cov tev thiab hollowing, yog li kev txuas nws lub neej.

3.3 Txhim kho kev tsim kho kev tsim kho
HPMC nce viscosity ntawm gypsum plaster, ua rau nws yooj yim rau kev thov thiab tsim kom du. Tsis tas li ntawd, HPMC muab lub plhaub tawv ntawm stucco, ua rau nws yooj yim dua rau kev siv cov cuab yeej ua haujlwm, yog li kev txhim kho kev tsim kho kev tsim kho thiab qhov zoo.

3.4 Tiv thaiv kev noj
HPMC txhim kho kev sib txawv thiab kev tiv thaiv plaster, tiv thaiv plaster, tiv thaiv plaster los ntawm sagging thiab sagging thaum kev tsim kho, yog li ua kom muaj kev txhim kho ntawm phab ntsa.

3.5 nce sijhawm qhib
HPMC nce lub sijhawm qhib ntawm stucco, muab cov pab tsim kev siv ntau lub sijhawm los txiav thiab ua haujlwm rau, zam kev ua haujlwm tsis muaj sijhawm.

4. Qosage thiab Siv HPMC
4.1 Dosage tswj
Hauv Gypsum Plaster, HPMC feem ntau yog ntxiv rau ntau qib ntawm 0.1% thiab 0.5%. Qhov no nyob ntawm cov kev tsim tshwj xeeb ntawm stucco, cov ntawv thov yuav tsum tau ua, thiab ib puag ncig cov kev mob. Qhov ntau npaum li cas yog qhov siab dhau los lossis qis dhau yuav cuam tshuam kev ua haujlwm ntawm stucco, yog li kev kho tau yuav tsum tau ua raws li cov xwm txheej tiag tiag.

4.2 Yuav siv li cas
HPMC yuav tsum yog tusyees dispersed hauv cov hmoov qhuav thiab tom qab ntawd tov nrog lwm cov khoom xyaw. Feem ntau thaum lub sijhawm npaj npaj ntawm stucco, HPMC tau ntxiv rau cov hmoov tsis zoo, tom qab ntawd muaj txiaj ntsig tau ntxiv, thiab cov sib tov sib xyaw kom txog thaum lub cev sib xyaw.

5. Qhov zoo ntawm HPMC hauv Gypsum Plaster
5.1 kev tiv thaiv ib puag ncig
HPMC yog qhov tsis muaj tshuaj lom, tsis muaj kuab lom ntsuab. Nws daim ntawv thov yuav tsis muaj kev cuam tshuam tsis zoo nyob rau ib puag ncig, uas yog nyob rau hauv kab nrog kev tiv thaiv ib puag ncig ntawm cov ntaub ntawv tsev niaj hnub no.

5.2 kev khwv nyiaj txiag
Vim tias muaj kev ua tiav HPMC, nws ntxiv tau txhim kho kev ua tau zoo ntawm Gypsum plaster, yog li nws muaj tus nqi tsim txiaj.

5.3 Kev ruaj khov
Kev ua tau zoo ntawm HPMC hauv Gypsum plaster yog ruaj khov thiab yuav hloov pauv qhov yooj yim vim yog hloov qhov kub thiab av noo. Nws yog qhov haum rau ntau qhov chaw tsim khoom.

6. Cov ntaub ntawv thov ua haujlwm
Hauv kev tsim kho tiag tiag, gypsum plaster ntxiv nrog HPMC tau siv dav hauv phab ntsa plastering, qab nthab pleev xim, kho lub tsev thiab lwm thaj teb. Piv txwv li, thaum tha xim sab hauv vaj tse, ntxiv HPRSUM Plaster tuaj yeem tiv thaiv cov teeb meem thiab hmoov zoo dua Phab ntsa ua tiav cov teebmeem.

Daim ntawv thov ntawm HPMC hauv Gypsum plaster tsis yog pab txhawb cov khoom siv lub cev ntawm cov khoom, tab sis kuj txhim kho kev tsim kho thiab ua haujlwm zoo. Nws cov dej ua haujlwm zoo dua, cov nplaum thiab cov khoom lag luam ua rau nws muaj kev tsis tseem ceeb ntawm cov khoom siv tsev tshiab. Nyob rau hauv lub neej yav tom ntej, raws li kev tsim kho kev lag luam qhov kev thov, ib puag ncig cov ntaub ntawv phooj ywg nce ntxiv, cov ntawv thov kev cia siab ntawm HPMC yuav muaj dav dav.