(1) Kev txiav txim siab ntawm viscosity: cov khoom qhuav yog npaj rau hauv cov kua dej nrog qhov hnyav ntawm 2 ° C, thiab ntsuas los ntawm ndj-1 rotational viscometer;
(2) Cov tsos ntawm cov khoom yog powdery. Cov khoom lag luam tam sim no yog ua tiav nrog "s" thiab cov khoom lag luam qib tshuaj yog ua tiav nrog "y". Piv txwv li, kuv-4000s yog cov khoom tam sim ntawm kuv-4000.
01. Yuav siv li cas hydroxypropyl methylcellulose
Ntxiv ncaj qha thaum lub sijhawm tsim khoom, txoj kev no yog qhov yooj yim tshaj plaws thiab siv sijhawm luv tshaj plaws, cov kauj ruam tshwj xeeb yog:
1. Ntxiv qee cov dej kub npau npau rau hauv cov hlab ntsha uas muaj kev ntxhov siab siab (cov khoom siv hydroxyethyl cellulose yog soluble hauv dej txias, yog li tsuas yog ntxiv dej txias);
2. Tig lub stirring ntawm tsawg ceev, thiab maj mam sieve cov khoom rau hauv lub thawv stirring;
3. Ntxiv stirring kom txog thaum tag nrho cov khoom yog tsau;
4. Ntxiv cov dej txias kom txaus thiab txuas ntxiv mus kom txog rau thaum tag nrho cov khoom tau yaj tag (qhov pom tseeb ntawm kev daws teeb meem nce ntxiv);
5. Tom qab ntawd ntxiv lwm cov khoom xyaw rau hauv cov mis.
Npaj cov cawv txiv hmab rau kev siv: Txoj kev no yog ua kom cov khoom ua rau niam cawv nrog cov concentration siab dua ua ntej, thiab tom qab ntawd ntxiv rau cov khoom. Qhov kom zoo dua yog tias nws muaj qhov yooj yim dua thiab tuaj yeem ncaj qha ntxiv rau cov khoom tiav. Cov kauj ruam yog tib yam li cov kauj ruam (1-3) hauv txoj kev ncaj qha ntxiv. Tom qab cov khoom yog tag nrho wetted, cia nws sawv ntsug rau ntuj txias kom yaj, thiab ces tag nrho do ua ntej siv. Nws yuav tsum tau muab sau tseg tias tus neeg sawv cev antifungal yuav tsum tau ntxiv rau niam cawv kom sai li sai tau.
Kev sib xyaw qhuav: tom qab tag nrho qhuav sib xyaw cov hmoov khoom thiab cov khoom siv hmoov (xws li cov cement, gypsum hmoov, ceramic av nplaum, thiab lwm yam), ntxiv cov dej tsim nyog, knead thiab do kom txog thaum cov khoom tiav lawm.
Dissolution ntawm cov dej txias soluble khoom: dej txias soluble cov khoom yuav muab ncaj qha mus ntxiv rau cov dej txias rau dissolution. Tom qab ntxiv rau dej txias, cov khoom yuav poob sai sai. Tom qab ntub dej rau qee lub sijhawm, pib nplawm kom txog thaum yaj tag.
02. Ceev faj thaum npaj cov kev daws teeb meem
(1) Cov khoom uas tsis muaj kev kho deg (tshwj tsis yog hydroxyethyl cellulose) yuav tsum tsis txhob ncaj qha yaj hauv dej txias.
(2) Nws yuav tsum tau maj mam sifted rau hauv lub thawv sib tov, tsis txhob ncaj qha ntxiv ib tug loj npaum li cas los yog cov khoom uas tau tsim nyob rau hauv ib tug thaiv rau hauv lub thawv sib tov.
(3) Cov dej kub thiab tus nqi ph ntawm cov dej muaj kev sib raug zoo nrog cov khoom tawg, yog li yuav tsum tau them nyiaj tshwj xeeb.
(4) Tsis txhob ntxiv qee cov tshuaj alkaline rau qhov sib tov ua ntej cov khoom hmoov yog soaked nrog dej. Nce pH tom qab soaking yuav pab yaj.
(5) Ntau npaum li qhov ua tau, ntxiv cov tshuaj tua kab mob ua ntej.
(6) Thaum siv cov khoom muaj viscosity siab, qhov hnyav ntawm niam cawv yuav tsum tsis txhob siab tshaj 2.5-3%, txwv tsis pub leej niam cawv yuav nyuaj.
(7) Cov khoom uas tau yaj tam sim ntawd yuav tsum tsis txhob siv rau hauv cov khoom noj lossis cov khoom siv tshuaj.
Post lub sij hawm: Mar-23-2023