Muaj Qeb HydroyPropyl Methylropy Cellulose Pharpulose Nrog kom paub qhov txawv kom paub qhov txawv, feem ntau siv tau qib hauv qab no (chav nyob yog viscososity)
1. Qes viscosity: 400 yog tsuas yog siv rau tus kheej txoj kev sib xyaw ua ke, tab sis feem ntau txawv teb chaws.
Vim li cas: tsis muaj viscosity tsawg, txawm hais tias tsis muaj dej tsis sib haum, tab sis zoo leveling, muaj colle cap compactness.
2. Nruab nrab thiab qis viscosity: 20,000-40000 tsuas yog siv rau ceramic vais nplaum, caulking tus tshuaj khib, thermium rwb thaiv tsev colling sib nraus, thiab lwm yam.
Vim li cas: kev tsim kho zoo, tsawg dua dej, siab ntom ntawm cug.
1, Dab tsi yog qhov tseem ceeb siv ntawm hydroxypropyl methyl cellulose (HPMC)?
HPMC tau dav siv hauv cov ntaub ntawv hauv tsev, cov khoom siv hluavtaws, cov khoom siv, cov khoom noj, cov ntaub ntawv ua liaj / duab ua liaj ua teb, luam yeeb thiab lwm yam tshuaj lom neeg. HPMC tuaj yeem faib ua: Qib Kev Tsim Kho, Khoom Noj Qib thiab Qib Kawm Los Ntawm Kev Siv. Tam sim no, feem ntau ntawm cov qauv tsim kho hauv tsev, tso hmoov ntau ntau, txog 90% yog siv los ua cov hmoov xis thiab lo kua nplaum.
2, HydroxyPropyyl methyl cellulose (HPMC) tau muab faib ua ob peb, qhov txawv ntawm nws li cas?
HPMC tuaj yeem muab faib ua cov hom dej khov thiab kub, nyob hauv cov dej txias, vim tias HPMC tsuas yog dispersed hauv dej, tsis muaj kev sib cais tiag tiag. Txog 2 feeb, viscosity ntawm cov kua maj mam nce, kev sib sau pob tshab viscous colloid. Cov kub soluble cov khoom, hauv dej txias, tuaj yeem nrawm nrawm rau hauv dej kub, thaum kub txav maj mam tshwm, kom txog thaum tsim ntawm pob tshab viscous colloid. Cov tshuaj kub tsuas yog siv tau hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib, hauv cov kua nplaum ua kua thiab pleev xim, yuav siv tau ib pab pawg tshwm sim, tsis tuaj yeem siv. Instant daws cov qauv daws teeb meem, ntau daim ntawv thov yog ob peb qhov dav, hauv kev ua kom huv thiab tshuaj khib thiab txheej, txhua tus tuaj yeem siv, tsis muaj dab tsi contraindication.
3, HydroxyPropyyl methyl cellulose (HPMC) cov qauv solubility muaj cov?
- A: Dej kub xaus kev kawm: Vim tias HPMC tsis tau yaj nyob rau hauv dej kub, thiab tom qab ntawd HPMC tau sai sai thaum txias, ob txoj kev tau piav qhia raws li nram no:
1) Muab cov dej kub uas yuav tsum muaj dej kub rau hauv lub thawv thiab cua sov nws txog 70 ℃. Maj mam ntxiv hydroxypropylulose hauv qeeb stirring, thiab tom qab ntawd maj mam ua ib tug slurry, nyob rau hauv stirring txias slurry.
2), ntxiv qhov yuav tsum tau muaj ntawm 1/3 lossis 2/3 dej hauv lub ntim, thiab cua sov li 70 ℃, raws li lub txheej txheem ntawm 1), HPMC Dispersion, Kev npaj ua dej slurry; Tom qab ntawd ntxiv qhov seem ntawm cov dej txias rau lub qhov cub kub, do thiab txias qhov sib tov.
Hmoov sib xyaw txoj kev: HPMC hmoov thiab ntau ntawm lwm cov hmoov av, tom qab ntawd ib qho me me HPMC hmoov, dej yuav yaj tam sim ntawd. - Putty hmoov thiab tshuaj khib ntau yam lag luam yog siv hom no. HydroxyPropy cellulose (HPMC) yog siv los ua cov neeg sawv cev tuab thiab dej tshem tawm cov hmoov pov tseg.
4, Koj yooj yim npaum li cas los txiav txim siab qhov zoo ntawm hydroxypropyl methyl cellulose (HPMC)?
- Teb: (1) whiteness: txawm hais tias whiteness tsis tuaj yeem txiav txim siab seb puas siv tau zoo, thiab yog tias nws tau ntxiv rau ntawm cov kws kho hniav ntxuav tshuaj, yuav cuam tshuam nws cov kev zoo. Txawm li cas los xij, cov khoom lag luam zoo yog feem ntau dawb.
(2) Fineness: HPMC fineness feem ntau 80 mesh thiab 100 mesh, 120 lub hom phiaj tsawg dua 80 mesh, finer zoo kawg nkaus, feem ntau zoo dua.
(3) Kev Hloov Chaw): HydroxyPropy cellulose (HPMC) rau hauv dej, kom pom nws cov kev hloov pauv, kom zoo dua, qhov tsawg dua, tsawg heev insoluble cov khoom sab hauv. Lub permeability ntawm txoj kab ntsug feem ntau yog qhov zoo, tab sis tsis tuaj yeem qhia tau zoo dua li ntawm cov reactor ntau dua, cov khoom lag luam zoo yog txiav txim los ntawm ntau yam.
(4) Kev sib tsoo tshwj xeeb: qhov ntau dua qhov sib nqus, qhov hnyav dua qhov zoo dua. Tshaj li qhov tseem ceeb, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl yog qhov siab, hydroxypropropyl yog qhov siab, tom qab ntawd dej rov qab yog qhov zoo dua.
5, HydroxyPropyyl methyl cellulose (HPMC) nyob rau hauv tus nqi ntawm putty hmoov?
- Teb: HPMC nyob rau hauv cov ntawv thov tiag tiag ntawm kev siv tshuaj, los ntawm huab cua chaw, ntsuas dej hauv zos, muab cov neeg yuav khoom noj zoo ntawm cov khoom zoo ", thiab muaj sib txawv. Feem ntau hais lus, nruab nrab ntawm plaub thiab tsib kilograms. Piv txwv li: Beijing Putty hmoov, feem ntau muab 5 kg; Hauv Guizhou, feem ntau ntawm lawv yog 5 kg nyob rau lub caij ntuj sov thiab 4.5 kg hauv lub caij ntuj no. Yunnan qhov ntau yog me me, feem ntau 3 kg -4 kg thiab li ntawd.
6, HydroxyPropyyl methyl cellulose (HPMC) Ntau npaum li cas viscosity yog tsim nyog?
- Teb: Yuav tsum dhuav nrog tus menyuam hmoov dav 100 txhiab ok, qhov yuav tsum tau ua rau ib qho siab, xav tau 150 txhiab lub peev xwm siv. Ntxiv mus, lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog dej tuav, ua raws li thickening. Hauv cov hmoov putty, tsuav li cov dej khaws cia yog qhov zoo, lub viscosity yog ntau dua 100 txhiab, lub viscosity muaj me ntsis nyhuv rau hauv dej tuav cia.
7, HydroxyPropyyl methyl cellulose (HPMC) Dab tsi yog cov ntsuas ntsuas tseem ceeb?
A: Hydroxypropropyl cov ntsiab lus thiab viscosity, uas yog dab tsi feem ntau cov neeg siv tau txhawj xeeb txog. Hydroxypropyl cov ntsiab lus yog qhov siab, dej khaws cia yog feem ntau zoo dua. Viscosity, dej tuav, tab sis tsis paub meej) kuj zoo dua, thiab viscosity, hauv cov cement cug zoo dua siv qee qhov.
8, HydroxyPropyyl methyl cellulose (HPMC) lub ntsiab raw khoom yog dab tsi?
- Teb: HydroxyPropy cellulose (HPMC) ntawm cov khoom siv raw, tshuaj ntsuab, acid, isopropyl cawv, thiab lwm yam.
9, HPMC nyob rau hauv daim ntawv thov putty hmoov, lub luag haujlwm tseem ceeb yog dab tsi, txawm hais tias siv tshuaj?
HPMC hauv cov hmoov ua kom muaj sia, thickening, dej tuav thiab tsim peb lub luag haujlwm. Thickening: cellulose tuaj yeem ua tuab ua kev raug tshem tawm, yog li txoj kev daws teeb meem kom tswj tau cov khaub ncaws hnav thiab nce tib lub luag haujlwm, anti ntws dai. Dej khaws cia: Ua kom muaj hmoov ntub dej qhuav ntxiv, ib qho kev sib tw ua kom huv si calcium cov tshuaj tiv thaiv nyob rau hauv kev ua dej. Kev tsim kho: Cellulose muaj cov nyhuv raj lubricating, tuaj yeem ua cov hmoov puty muaj kev tsim kho kom zoo. HPMC tsis koom nrog kev siv tshuaj lom neeg, tsuas yog ua lub luag haujlwm ntawm lub luag haujlwm. Putty hmoov ntxiv dej, ntawm phab ntsa, yog cov tshuaj lom neeg cov tshuaj tiv thaiv, vim tias muaj cov hmoov tshiab, thiab tom qab ntawd nws tsis tau tsim cov khoom siv tshiab (calcium carbonate). Lub ntsiab Cheebtsam ntawm cov hmoov av grey calcium yog: (Oh) 2,
10, HPMC tsis-ionic cellulose ither, ces dab tsi tsis yog-ionic?
A: Feem ntau hais lus, tsis yog ib yam tshuaj hauv dej uas tsis ionize. Ionization yog txheej txheem uas ib qho electrolyte rau hauv kev ywj pheej tsiv mus los nyob rau hauv hom kuab tshwj xeeb, xws li dej lossis dej caw. Piv txwv li, sodium chloride (NACL), cov ntsev peb noj txhua hnub, yaj sab hauv sodium reions (cle) Hauv lwm lo lus, HPMC nyob rau hauv cov dej tsis cuam tshuam rau hauv kev them nyiaj ions, tab sis muaj li cov lwg me.
Lub Sijhawm Post: Feb-14-2025