(1) Kev txiav txim siab ntawm viscosity: Cov khoom qhuav tau npaj rau hauv cov kua dej nrog qhov hnyav concentration ntawm 2 ° C, thiab ntsuas los ntawm NDJ-1 rotational viscometer;
(2) Cov tsos ntawm cov khoom yog hmoov, thiab cov khoom lag luam tam sim ntawd yog tom qab nrog "s".
Yuav siv hydroxypropyl methylcellulose li cas
Ntxiv ncaj qha thaum lub sijhawm tsim khoom, txoj kev no yog txoj kev yooj yim tshaj plaws thiab siv sijhawm luv tshaj plaws, cov kauj ruam tshwj xeeb yog:
1. Ntxiv ib qho dej npau rau hauv lub thawv uas tau do nrog kev ntxhov siab siab (cov khoom hydroxyethyl cellulose yaj tau hauv dej txias, yog li ntxiv dej txias);
2. Tig rau qhov kev sib tov ntawm qhov ceev qis, thiab maj mam lim cov khoom rau hauv lub thawv sib tov;
3. Txuas ntxiv do kom txog thaum tag nrho cov khoom me me raug ntub;
4. Ntxiv dej txias kom txaus thiab txuas ntxiv do kom txog thaum tag nrho cov khoom yaj tag (qhov kev pom tseeb ntawm cov tshuaj nce ntxiv ntau heev);
5. Tom qab ntawd ntxiv lwm cov khoom xyaw rau hauv cov mis.
Npaj cov cawv niam rau kev siv: Txoj kev no yog ua kom cov khoom ua cawv niam nrog qhov concentration siab dua ua ntej, thiab tom qab ntawd ntxiv rau cov khoom. Qhov zoo yog tias nws muaj kev ywj pheej ntau dua thiab tuaj yeem ntxiv ncaj qha rau cov khoom tiav. Cov kauj ruam zoo ib yam li cov kauj ruam (1-3) hauv txoj kev ntxiv ncaj qha. Tom qab cov khoom ntub tag, cia nws sawv rau qhov txias ntuj kom yaj, thiab tom qab ntawd do tag nrho ua ntej siv. Nws yuav tsum tau sau tseg tias tus neeg sawv cev antifungal yuav tsum tau ntxiv rau cov cawv niam sai li sai tau.
Kev sib tov qhuav: Tom qab sib tov cov hmoov thiab cov ntaub ntawv hmoov (xws li cement, hmoov gypsum, av nplaum ceramic, thiab lwm yam), ntxiv dej kom tsim nyog, zuaj thiab do kom txog thaum cov khoom yaj tag.
Kev yaj cov khoom uas yaj tau hauv dej txias: cov khoom uas yaj tau hauv dej txias tuaj yeem ntxiv ncaj qha rau hauv dej txias kom yaj tau. Tom qab ntxiv dej txias, cov khoom yuav poob sai sai. Tom qab ntub dej rau ib lub sijhawm, pib do kom txog thaum yaj tag.
Cov kev ceev faj thaum npaj cov kev daws teeb meem
(1) Cov khoom tsis muaj kev kho saum npoo (tshwj tsis yog hydroxyethyl cellulose) yuav tsum tsis txhob yaj ncaj qha rau hauv dej txias;
(2) Nws yuav tsum tau maj mam sieve rau hauv lub thawv sib tov, tsis txhob ntxiv ntau ntau lossis cov khoom uas tau tsim los ua ib lub thaiv rau hauv lub thawv sib tov;
(3) Qhov kub ntawm dej thiab tus nqi ph ntawm dej muaj kev sib raug zoo nrog kev yaj ntawm cov khoom, yog li yuav tsum tau them sai sai;
(4) Tsis txhob ntxiv qee cov tshuaj alkaline rau hauv cov khoom sib tov ua ntej cov hmoov khoom raug tsau nrog dej, thiab nce tus nqi ph tom qab nws raug tsau, uas yuav pab yaj;
(5) Kom deb li deb tau, ntxiv cov tshuaj tua kab mob ua ntej;
(6) Thaum siv cov khoom muaj viscosity siab, qhov hnyav concentration ntawm cov cawv niam yuav tsum tsis txhob siab tshaj 2.5-3%, txwv tsis pub cov cawv niam yuav nyuaj rau kev ua haujlwm;
(7) Cov khoom uas tau yaj sai sai yuav tsum tsis txhob siv rau hauv cov khoom noj lossis cov tshuaj.
Lub sijhawm tshaj tawm: Plaub Hlis-07-2023