4 Cov lus nug txog HPMC

1. Dab tsi yog qhov tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC)?
HPMC yog dav siv nyob rau hauv cov khoom siv, coatings, hluavtaws resins, ceramics, kws, zaub mov, textile, kev ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam.HPMC tuaj yeem muab faib ua qib kev tsim kho, qib zaub mov thiab qib tshuaj raws li nws qhov kev siv.Tam sim no, feem ntau cov khoom siv hauv Suav teb yog nyob rau theem kev tsim kho.Nyob rau theem kev tsim kho, cov hmoov putty yog siv ntau ntau, txog 90% rau cov hmoov putty thiab lwm yam rau cov cement mortar thiab pobzeb nplaum.

2. Dab tsi yog qhov ua rau blistering nyob rau hauv putty hmoov thaum siv HPMC hauv putty hmoov?
HPMC ua cov thickener, dej retainer thiab builder hauv putty hmoov.Nws tsis koom nrog kev tshuaj xyuas.

Ua rau blistering: 1. dej ntau dhau.2. Cov txheej hauv qab tsis qhuav, tsuas yog khawb ib txheej ntawm cov txheej saum toj kawg nkaus, uas kuj yooj yim blistered.

HPMC

3. Muaj pes tsawg hom hydroxypropyl methylcellulose (HPMC) muaj?Qhov txawv ntawm lawv yog dab tsi?
HPMC tuaj yeem muab faib ua tam sim thiab kub soluble.Instantly soluble khoom, dissipate sai thiab ploj mus rau hauv dej hauv dej txias.Lub sijhawm no, cov kua dej tsis muaj viscosity li HPMC tsuas yog tawg mus rau hauv dej thiab tsis yaj.Tom qab li 2 feeb, lub viscosity ntawm cov kua maj mam nce, tsim ib tug ntshiab viscous gel.Cov khoom kub soluble tuaj yeem tawg sai sai hauv dej kub thiab ploj mus hauv dej kub.Raws li qhov kub thiab txias poob rau qee qhov kub, qhov viscosity maj mam tshwm kom txog thaum lub viscous ntshiab tsim.

Hom kub yaj tsuas yog siv tau rau hauv cov hmoov putty thiab mortars.Hauv cov kua nplaum thiab cov xim pleev xim, qhov ci ci tshwm sim thiab siv tsis tau.Hom tam sim no muaj ntau yam kev siv thiab tuaj yeem siv rau hauv cov hmoov putty thiab mortars nrog rau cov kua nplaum thiab cov xim.

4. Yuav ua li cas qhov zoo ntawm hydroxypropyl methylcellulose (HPMC) yuav txiav txim tau yooj yim thiab pom?
(1) Lub ntiajteb txawj nqus tshwj xeeb: qhov siab dua qhov tshwj xeeb, qhov zoo dua.
(2) Whiteness: Feem ntau cov khoom zoo muaj qhov zoo dawb.Tsuas yog cov neeg uas muaj cov tshuaj ntxuav hniav dawb ntxiv.Cov tshuaj ntxuav hniav dawb tuaj yeem cuam tshuam qhov zoo.
(3) Fineness: Lub finer lub fineness, qhov zoo dua qhov zoo.Qhov zoo ntawm peb HPMC feem ntau yog 80 mesh thiab 100 mesh, 120 mesh kuj muaj.
(4) Transmittance: Muab HPMC tso rau hauv dej los tsim cov pob tshab gel thiab saib xyuas nws cov kis.Qhov ntau dua qhov transmittance, cov khoom siv tsawg insoluble.Vertical reactors feem ntau muaj kev xa tawm zoo dua thiab cov kab rov tav reactors muaj qhov tsis zoo, tab sis qhov no tsis tau txhais hais tias qhov kev tsim khoom ntawm ntsug reactors zoo dua li ntawm lwm txoj kev tsim khoom.Muaj ntau yam uas txiav txim siab qhov zoo ntawm cov khoom nyob rau hauv kab rov tav reactors, uas muaj cov ntsiab lus hydroxypropyl siab thiab cov ntsiab lus hydroxypropyl siab, uas yog qhov zoo tshaj plaws rau kev tuav dej.