Qib ntawm kev tsim cov kua nplaum yog qhov teeb meem uas cuam tshuam cov neeg siv khoom.
1. Qib ntawm kev tsim cov nplaum yuav tsum coj mus rau hauv tus account cov ntaub ntawv raw.Qhov laj thawj tseem ceeb rau kev tsim cov txheej txheem sib txuas yog qhov tsis sib xws ntawm acrylic emulsion thiab hydroxypropyl methylcellulose (HPMC).
2. Vim lub sij hawm sib tov tsis txaus;kev tsim cov nplaum kuj muaj qhov teeb meem ntawm cov khoom tsis zoo thickening.Hauv kev tsim cov nplaum, nws yog ib qho tseem ceeb uas yuav tsum tau siv instant kas fes hydroxypropyl methylcellulose (HPMC) vim tias HPMC tsuas yog tawg hauv dej thiab tsis yaj tiag tiag.Tom qab li 2 feeb, cov viscosity ntawm cov kua maj mam nce, ua kom pob tshab viscous colloidal kua.Cov khoom kub yaj tuaj yeem tawg sai sai hauv cov dej kub npau npau thiab ploj mus rau hauv dej npau npau thaum ntsib dej txias.Thaum qhov kub thiab txias poob mus rau ib qho kub, viscosity retardation tshwm sim kom txog thaum lub pob tshab ntshiab viscous colloidal tov yog tsim.Nws raug pom zoo kom siv 2-4 kg ntawm hydroxypropyl methylcellulose (HPMC) hauv kev tsim cov nplaum.
3. Lub cev muaj zog ntawm hydroxypropyl methylcellulose (HPMC) nyob rau hauv kev tsim kho adhesives yog ruaj khov, cov nyhuv anti-mildew zoo heev, thiab nws yuav tsis raug puas tsuaj los ntawm kev hloov pH nqi.Lub viscosity tuaj yeem siv tau ntawm 100,000 s thiab 200,000 s, tab sis hauv kev tsim khoom Thaum tsim khoom, qhov viscosity siab dua, qhov zoo dua.Viscosity yog inversely proportional rau compressive zog ntawm cov nplaum.Qhov siab dua qhov viscosity, qhov qis dua lub zog compressive.Feem ntau, viscosity yog 100,000s.
Tam sim no hauv kev lag luam kho kom zoo nkauj, daim ntawv thov ntawm hydroxypropyl methylcellulose yog nruj dua.
Yuav ua li cas manipulate no kom muaj nuj nqis?Coj koj mus rau:
Tam sim ntawd sib tov CMC nrog dej los ua cov nplaum zoo li cov nplaum thiab muab tso rau ib sab.Thaum txhim kho CMC muab tshuaj txhuam, siv lub tov khoom ntxiv ib qho dej txias rau cov khoom xyaw.Thaum lub tov khoom pib, maj mam thiab sib npaug ntawm cov carboxymethylcellulose rau hauv cov khoom xyaw tank, thiab txuas ntxiv stirring kom tag nrho cov carboxymethylcellulose nrog dej thiab ua kom tiav cov carboxymethylcellulose.Thaum dissolving lub raj board, nws yog feem ntau yuav tsum tau disperse nws tusyees thiab stirring kom zoo "tiv thaiv kev tsim thiab tsim ntawm lub raj board thaum nws ntsib dej, txo qhov teeb meem ntawm lub raj board dissolution" thiab txhim kho cov solubility ntawm lub raj board. .Pawg tswj hwm kev sib cais tus nqi.
Lub sijhawm sib xyaw yog txawv ntawm lub sijhawm nws siv rau CMC kom yaj tag.Nov yog ob lub ntsiab lus.Feem ntau, lub sij hawm sib tov yog luv dua li lub sij hawm rau kev ua tiav ntawm CMC, nyob ntawm qhov xwm txheej tshwj xeeb.Lub sijhawm sib xyaw yog txiav txim siab raws li cov qauv ntaub ntawv zoo li qub.Thaum CMC sib npaug sib npaug hauv dej yam tsis muaj kev sib xyaw ua ke, kev sib xyaw yog txiav kom tso cai CMC thiab dej nkag mus rau ib leeg.
Muaj ntau qhov laj thawj rau lub sijhawm yuav tsum tau ua kom tiav CMC:
(1) CMC thiab dej sib xyaw ua ke, thiab tsis muaj cov khoom sib cais ntawm cov kua dej;
(2) Cov sib tov yog sib xws thiab du, thiab nto yog du thiab moist;
(3) Tom qab sib tov, cov muab tshuaj txhuam yog xim tsis muaj xim thiab pob tshab, thiab tsis muaj cov khoom siv hauv cov muab tshuaj txhuam.Nws yuav siv sij hawm 10 mus rau 20 teev los ntawm lub sij hawm CMC muab tso rau hauv qhov sib xyaw ntawm cov khoom xyaw tank thiab dej kom txog thaum nws yaj tag.
Post lub sij hawm: Feb-05-2024