(1) Kev txiav txim siab ntawmHPMCviscosity: Cov khoom qhuav yog npaj rau hauv cov kua dej nrog qhov hnyav ntawm 2 ° C, thiab ntsuas los ntawm NDJ-1 hom viscometer rotational;
(2) Cov tsos ntawm cov khoom yog hmoov, thiab cov khoom tam sim no yog suffixed nrog "s" nyob rau hauv lub npe hom.
Yuav siv hydroxypropyl methylcellulose li cas?
Nws yog ncaj qha ntxiv thaum lub sij hawm tsim khoom. Txoj kev no yog txoj kev yooj yim tshaj plaws thiab siv sij hawm luv tshaj. Cov kauj ruam tshwj xeeb yog:
1. Ntxiv qee cov dej kub npau npau rau hauv lub nkoj uas muaj kev ntxhov siab heev (cov khoom siv hydroxyethyl cellulose yog soluble hauv dej txias, yog li cia li 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 soaked los ntawm;
4. Ntxiv dej txias txaus thiab txuas ntxiv mus kom txog thaum tag nrho cov khoom tau yaj tag (qhov pom tseeb ntawm cov tshuaj yog nce ntxiv);
5. Tom qab ntawd ntxiv lwm cov khoom xyaw rau hauv cov mis.
Npaj cov cawv niam rau kev siv: Txoj kev no yog los npaj cov khoom rau hauv niam cov cawv uas muaj siab dua, 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 (1-3) hauv txoj kev sib ntxiv ncaj qha. Tom qab cov khoom yog ntub dej tag, 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 siv cov khoom siv qhuav 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 uas tsim nyog, thiab knead tag nrho 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 ntxiv rau cov dej txias rau dissolution. Tom qab ntxiv dej txias, cov khoom yuav poob sai sai. Tom qab ntub dej rau qee lub sijhawm, pib nplawm kom txog thaum nws yaj tag.
Kev 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 sieved rau hauv lub thawv sib tov, thiab tsis txhob ncaj qha ntxiv cov khoom uas tau tsim rau hauv ib qho thaiv rau hauv lub thawv sib tov hauv ntau qhov ntau;
(3) Tus nqi pH ntawm dej kub thiab dej muaj kev sib raug zoo nrog cov khoom tawg, thiab 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 tsau nrog dej, thiab nce pH tus nqi tom qab soaking, uas yuav pab yaj;
(5) Raws li qhov ua tau, ntxiv cov tshuaj tua kab mob ua ntej;
(6) Thaum siv cov khoom lag luam siab viscosity, qhov hnyav ntawm niam cawv yuav tsum tsis txhob siab tshaj 2.5-3%, txwv tsis pub leej niam cawv yog qhov nyuaj rau kev khiav lag luam;
(7) Cov khoom lag luam uas tau kho tam sim no yuav tsum tsis txhob siv rau hauv cov khoom noj lossis tshuaj.
Post lub sij hawm: Oct-19-2022