Hydroxypropyl hmoov txhuv nplej siab ether (HPS)thiabcellulose etheryog ob hom kev siv tshuaj additives, siv dav hauv cov khoom siv hauv tsev, xws li tshuaj khib, tshuaj pleev xim, txheej, thiab lwm yam. Txawm hais tias lawv muaj qhov zoo sib xws ntawm qee yam khoom, muaj qhov sib txawv tseem ceeb hauv ntau yam xws li cov khoom siv raw, cov khoom siv tshuaj, cov khoom siv lub cev. , cov teebmeem ntawm daim ntawv thov, thiab cov nqi.
1. Cov khoom siv raw thiab cov qauv tshuaj
Hydroxypropyl hmoov txhuv nplej siab ether (HPS)
HPS yog raws li cov hmoov txhuv nplej siab ntuj thiab tau los ntawm etherification hloov kho cov tshuaj tiv thaiv. Nws cov ntaub ntawv tseem ceeb yog pob kws, nplej, qos yaj ywm thiab lwm yam nroj tsuag ntuj. Cov hmoov txhuv nplej siab yog tsim los ntawm cov piam thaj txuas los ntawm α-1,4-glycosidic bonds thiab me me ntawm α-1,6-glycosidic bonds. Tom qab hydroxypropylation, ib pawg hydrophilic hydroxypropyl tau nkag mus rau hauv HPS cov qauv molecular, muab qee yam thickening, dej tuav thiab hloov pauv ua haujlwm.
cellulose ether
Cellulose ethers yog muab los ntawm ntuj cellulose, xws li paj rwb lossis ntoo. Cellulose yog tsim los ntawm cov piam thaj units txuas los ntawm β-1,4-glycosidic bonds. Feem ntau cov cellulose ethers muaj xws li hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), hydroxyethyl cellulose (HEC), thiab lwm yam. Cov tebchaw no qhia cov khoom sib txawv los ntawm cov tshuaj tiv thaiv etherification thiab muaj tshuaj lom neeg ruaj khov thiab lub cev muaj zog.
2. Lub cev muaj zog
Kev ua tau zoo ntawm HPS
Thickening: HPS muaj cov nyhuv thickening zoo, tab sis piv nrog cellulose ether, nws lub peev xwm thickening yog me ntsis qaug zog.
Kev tuav dej: HPS muaj cov dej ntim nruab nrab thiab tsim nyog rau cov khoom siv hauv tsev qis rau nruab nrab.
Kev ua haujlwm tau zoo: HPS tuaj yeem txhim kho kev ua haujlwm ntawm mortar thiab txo qis qis thaum tsim kho.
Qhov kub thiab txias: HPS yog qhov kub thiab txias heev thiab cuam tshuam los ntawm qhov kub thiab txias.
Kev ua tau zoo ntawm cellulose ethers
Thickening: Cellulose ether muaj cov nyhuv thickening thiab tuaj yeem ua kom cov viscosity ntawm mortar lossis putty.
Kev tuav dej: Cellulose ether muaj cov khoom tuav dej zoo heev, tshwj xeeb tshaj yog nyob rau hauv qhov chaw kub kub, uas tuaj yeem ncua lub sijhawm qhib ntawm lub mortar thiab tiv thaiv dej ntau dhau.
Ua haujlwm tau zoo: Cellulose ether yog qhov zoo tshaj plaws hauv kev txhim kho kev ua haujlwm thiab tuaj yeem txo cov teeb meem xws li tawg thiab hmoov.
Kub-resistant: Cellulose ether muaj zog adaptability rau qhov kub thiab txias hloov thiab kev ua haujlwm ruaj khov.
3. Cov teebmeem ntawm daim ntawv thov
Daim ntawv thov cuam tshuam ntawmHPS
Hauv mortar qhuav, HPS feem ntau ua lub luag haujlwm ntawm kev txhim kho kev ua haujlwm, txhim kho dej tuav, thiab txo qis delamination thiab cais tawm. Nws yog kev lag luam thiab tsim nyog siv rau hauv cov xwm txheej uas muaj kev tswj hwm tus nqi siab, xws li sab hauv phab ntsa zoo tib yam putty hmoov, pem teb leveling mortar, thiab lwm yam.
Kev siv cov nyhuv ntawm cellulose ether
Cellulose ethersyog dav siv nyob rau hauv high-performance mortars, pobzeb adhesives, gypsum-raws li cov ntaub ntawv thiab sab nrauv phab ntsa rwb thaiv tsev systems. Nws superior thickening thiab dej tuav cov khoom tuaj yeem txhim kho kev sib raug zoo thiab kev ua haujlwm ntawm cov khoom siv, thiab tshwj xeeb tshaj yog tsim rau cov haujlwm uas muaj kev xav tau ntawm kev tsim kho thiab cov khoom tiav.
4. Tus nqi thiab kev tiv thaiv ib puag ncig
tus nqi:
HPS muaj tus nqi qis dua thiab tsim nyog siv rau hauv kev lag luam tus nqi. Cellulose ethers kuj tseem kim, tab sis muaj kev ua tau zoo thiab muaj txiaj ntsig zoo hauv kev xav tau kev tsim kho.
Kev tiv thaiv ib puag ncig:
Ob leeg yog muab los ntawm cov khoom siv ntuj tsim thiab muaj cov khoom zoo ib puag ncig. Txawm li cas los xij, vim tias tsawg dua cov tshuaj reagents tau noj nyob rau hauv cov txheej txheem ntawm HPS, nws lub nra ib puag ncig yuav qis dua.
5. Lub hauv paus xaiv
Cov kev xav tau ntawm kev ua haujlwm: Yog tias koj muaj qhov yuav tsum tau ua kom tuab thiab tuav dej, koj yuav tsum xaiv cellulose ether; rau cov ntaub ntawv uas raug nqi-rhiab tab sis xav tau qee yam kev txhim kho hauv kev ua haujlwm, koj tuaj yeem xav siv HPS.
Kev siv cov xwm txheej: Kev tsim kho kub kub, kev tiv thaiv phab ntsa sab nrauv, cov nplais nplaum thiab lwm yam xwm txheej uas yuav tsum tau muaj kev txhawb nqa kev ua tau zoo yog qhov tsim nyog rau cellulose ether; rau qhov zoo tib yam sab hauv phab ntsa putty lossis yooj yim mortar, HPS tuaj yeem muab cov kev daws teeb meem zoo thiab siv tau.
Hydroxypropyl hmoov txhuv nplej siab etherthiabcellulose ether txhua tus muaj lawv tus kheej qhov zoo thiab lawv ua lub luag haujlwm sib txawv hauv cov khoom siv hauv tsev. Kev xaiv yuav tsum tau ua tiav raws li qhov yuav tsum tau ua, kev tswj hwm tus nqi, ib puag ncig kev tsim kho thiab lwm yam ntawm cov phiaj xwm tshwj xeeb kom ua tiav cov txiaj ntsig zoo tshaj plaws.
Post lub sij hawm: Nov-21-2024