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1 Kev Paub Txog Cov Lus Nug Tseem Ceeb 1 Muaj pes tsawg txoj kev tsim kho kom muab cov vuas vov nrog cov nplaum pobzeb? Cov lus teb: Cov txheej txheem nplaum pobzeb feem ntau muab faib ua peb hom: txoj kev txheej txheej rov qab, txoj kev txheej txheej hauv paus (tseem hu ua txoj kev trowel, txoj kev nplaum nyias), thiab kev sib xyaw ua ke...Nyeem ntxiv»
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1 Cov teeb meem feem ntau hauv cov hmoov putty phab ntsa: (1) Qhuav sai. Qhov no feem ntau yog vim tias qhov ntau ntawm cov hmoov calcium tshauv ntxiv (loj dhau, qhov ntau ntawm cov hmoov calcium tshauv siv hauv cov mis putty tuaj yeem txo qis kom haum) yog cuam tshuam nrog tus nqi khaws dej ntawm cov fiber, thiab nws kuj cuam tshuam nrog...Nyeem ntxiv»
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Cov kua nplaum rau pobzeb, tseem hu ua cov kua nplaum rau pobzeb ceramic, feem ntau yog siv los nplaum cov khoom dai kom zoo nkauj xws li cov pobzeb ceramic, cov pobzeb ntsej muag, thiab cov pobzeb hauv pem teb. Nws cov yam ntxwv tseem ceeb yog lub zog sib txuas siab, tiv taus dej, tiv taus khov thiab yaj, tiv taus kev laus thiab kev tsim kho yooj yim. Nws yog ib qho khoom siv zoo heev...Nyeem ntxiv»
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Hydroxypropyl methylcellulose HPMC yog ib hom non-ionic cellulose mixed ether. Tsis zoo li ionic methyl carboxymethyl cellulose mixed ether, nws tsis cuam tshuam nrog cov hlau hnyav. Vim yog qhov sib txawv ntawm cov ntsiab lus methoxyl thiab hydroxypropyl cov ntsiab lus hauv hydroxypropyl methylcellulose thiab cov v sib txawv ...Nyeem ntxiv»
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Cellulose ether yog ib qho polymer tsim los ntawm cov cellulose ntuj los ntawm kev hloov kho tshuaj lom neeg. Cellulose ether yog ib qho derivative ntawm cellulose ntuj. Kev tsim cov cellulose ether txawv ntawm cov polymers tsim. Nws cov khoom siv yooj yim tshaj plaws yog cellulose, ib qho tshuaj polymer ntuj. Vim yog ...Nyeem ntxiv»
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Cov Lus Qhia Luv: 1. Tus neeg sawv cev ntub thiab tawg 2. Tus neeg ua npuas dej 3. Tus neeg ua kom tuab 4. Cov tshuaj ntxiv rau zaj duab xis 5. Tus neeg sawv cev tiv thaiv xeb, tiv thaiv pwm thiab tiv thaiv algae 6. Lwm cov tshuaj ntxiv 1 Tus neeg sawv cev ntub thiab tawg: Cov txheej txheem dej siv dej ua cov kuab tshuaj lossis cov khoom sib kis, thiab dej muaj cov khoom siv dielectric loj ...Nyeem ntxiv»
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Lub luag haujlwm ntawm cov tshuaj khaws dej sib xyaw rau hauv cov hmoov gypsum yog dab tsi? Lus teb: siv cov khoom siv plastering gypsum, bonded gypsum, caulking gypsum, gypsum putty thiab lwm yam khoom siv hmoov tsim kho. Txhawm rau kom yooj yim rau kev tsim kho, cov tshuaj gypsum retarders raug ntxiv thaum lub sijhawm tsim khoom kom ntev lub sijhawm ...Nyeem ntxiv»
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1. Daim ntawv thov tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi? HPMC yog siv dav hauv cov ntaub ntawv siv hauv kev tsim kho, tshuaj pleev xim, cov khoom siv ua los ntawm cov av nplaum, tshuaj, khoom noj, textiles, kev ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam. HPMC tuaj yeem muab faib ua qib tsim kho, qib zaub mov thiab ...Nyeem ntxiv»
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Cellulose siv dav hauv petrochemical, tshuaj, ntawv ua, tshuaj pleev ib ce, cov ntaub ntawv tsim kho, thiab lwm yam. Nws yog ib qho khoom siv ntau yam, thiab kev siv sib txawv muaj cov kev cai ua tau zoo sib txawv rau cov khoom cellulose. Tsab xov xwm no feem ntau qhia txog kev siv thiab txoj kev txheeb xyuas zoo ntawm HPM...Nyeem ntxiv»
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Hauv cov tshuaj pleev ib ce, muaj ntau yam tshuaj tsis muaj xim thiab tsis muaj ntxhiab, tab sis muaj ob peb yam tsis muaj tshuaj lom. Hnub no, kuv yuav qhia rau koj, hydroxyethyl cellulose, uas yog ib qho uas pom ntau hauv ntau cov tshuaj pleev ib ce lossis cov khoom siv niaj hnub. Hydroxyethyl Cellulose【Hydroxyethyl Cellulose】 Kuj hu ua (HEC) yog ib qho dawb ...Nyeem ntxiv»
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Txheej txheem cej luam: hu ua HPMC, dawb lossis tawm-dawb fibrous lossis granular hmoov. Muaj ntau hom cellulose thiab siv dav, tab sis peb feem ntau tiv tauj nrog cov neeg siv khoom hauv kev lag luam hmoov qhuav tsev. Cov cellulose feem ntau yog hais txog hypromellose. Cov txheej txheem ntau lawm: Lub ntsiab r ...Nyeem ntxiv»
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CMC feem ntau yog ib qho anionic polymer compound npaj los ntawm reacting ntuj cellulose nrog caustic alkali thiab monochloroacetic acid, nrog ib tug molecular qhov hnyav ntawm 6400 (± 1 000). Lub ntsiab by-products yog sodium chloride thiab sodium glycolate. CMC yog rau ntuj cellulose hloov kho. Nws tau offic...Nyeem ntxiv»