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Kev lag luam kev tsim kho tseem niaj hnub hloov zuj zus, nrhiav cov khoom siv tshiab los txhim kho kev ua haujlwm ntawm cov mortars hauv tsev. Ib yam khoom siv uas tau txais kev saib xyuas ntau yog vinyl acetate-ethylene (VAE) redispersible polymer hmoov (RDP). Cov hmoov no tau ua pov thawj tias muaj txiaj ntsig zoo hauv kev txhim kho...Nyeem ntxiv»
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Cov nplaum rau ntawm phab ntsa ua lub luag haujlwm tseem ceeb hauv kev siv daim ntawv phab ntsa kom zoo thiab ua haujlwm tau ntev. Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv ntxiv uas siv tau ntau yam hauv kev tsim cov nplaum rau ntawm phab ntsa los txhim kho ntau yam khoom, suav nrog lub zog sib txuas, kev ua haujlwm tau zoo thiab noo noo...Nyeem ntxiv»
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A. Cov mis nplaum rau pobzeb: 1. Cov khoom xyaw tseem ceeb: Cov nplaum rau pobzeb feem ntau muaj cov cement, xuab zeb, polymers thiab cov khoom ntxiv. Cov mis tshwj xeeb yuav txawv nyob ntawm hom pobzeb, cov khoom siv hauv qab thiab cov xwm txheej ib puag ncig. 2. Cov nplaum rau pobzeb uas siv cement: Portland cement: Muab kev sib txuas...Nyeem ntxiv»
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Kev tsim cov gypsum-based self-leveling mortars yuav tsum tau siv ntau yam khoom siv raw, txhua yam uas cuam tshuam rau cov khoom tshwj xeeb ntawm cov khoom kawg. Ib qho tseem ceeb ntawm cov self-leveling mortar yog cellulose ether, uas yog ib qho tseem ceeb additive. Gypsum-based self-leveling mortar...Nyeem ntxiv»
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Polyanionic cellulose (PAC) yog cov cellulose derivative uas yaj tau hauv dej uas siv dav hauv kev lag luam roj thiab roj av, tshwj xeeb tshaj yog hauv cov kua dej tawg. Hydraulic fracturing, feem ntau hu ua fracking, yog ib txoj kev txhawb nqa siv los ua kom cov roj thiab roj av rho tawm ntawm...Nyeem ntxiv»
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1. Cov qauv tshuaj lom neeg: Formic acid (HCOOH): Nws yog ib qho yooj yim carboxylic acid nrog cov tshuaj lom neeg HCOOH. Nws muaj ib pawg carboxyl (COOH), qhov twg hydrogen txuas nrog cov pa roj carbon thiab lwm cov pa oxygen tsim ob daim ntawv cog lus nrog cov pa roj carbon. Sodium formate (HCCONa): Nws yog cov ntsev sodium ntawm rau...Nyeem ntxiv»
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Abstract: Nyob rau xyoo tas los no, cov txheej txheem dej tau txais kev saib xyuas dav dav vim lawv txoj kev phooj ywg ib puag ncig thiab cov organic compound tsawg volatile (VOC). Hydroxyethylcellulose (HEC) yog cov polymer uas yaj tau hauv dej siv dav hauv cov qauv no, ua haujlwm ua cov khoom tuab kom nce ...Nyeem ntxiv»
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Abstract: Kev lag luam kev tsim kho ua lub luag haujlwm tseem ceeb hauv kev tsim lub ntiaj teb niaj hnub no, uas cov cement yog lub hauv paus tseem ceeb ntawm kev tsim kho. Tau ntau xyoo, cov kws tshawb fawb thiab cov engineers tau txuas ntxiv nrhiav txoj hauv kev los txhim kho qhov zoo thiab kev ua tau zoo ntawm cement. Ib txoj hauv kev zoo siab suav nrog kev ntxiv cov khoom ntxiv ...Nyeem ntxiv»
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Abstract: Calcium formate, ib qho ntsev calcium ntawm formic acid, tau txais kev saib xyuas dav dav ua ib qho khoom noj khoom haus ntxiv rau xyoo tas los no. Cov tshuaj no tau lees paub rau nws ntau yam txiaj ntsig hauv kev noj zaub mov tsiaj, txhawb kev loj hlob, txhim kho kev noj qab haus huv, thiab txhim kho kev ua tau zoo tag nrho. Cov kev tshuaj xyuas no yog ...Nyeem ntxiv»
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kev lag luam kev tsim kho tau ua tiav zoo heev nyob rau xyoo tas los no, nrog rau kev tsom mus rau kev txhim kho kev ua tau zoo, kev ruaj khov thiab kev ruaj khov ntawm cov ntaub ntawv tsim kho. Hydroxypropyl methylcellulose (HPMC) tau dhau los ua cov khoom siv ntxiv rau hauv cov hmoov gypsum-based building mater...Nyeem ntxiv»
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Cov hmoov txhuv nplej siab ethers yog ib hom hmoov txhuv nplej siab hloov kho uas tau txais kev saib xyuas dav dav hauv ntau yam kev siv hauv kev lag luam vim lawv qhov kev hloov pauv tau yooj yim thiab cov khoom tshwj xeeb. Txawm hais tias nws feem ntau siv rau hauv cov nplaum rau nws cov peev xwm sib txuas, nws qhov kev haum rau qhov kub thiab txias nyob ntawm ...Nyeem ntxiv»
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qhia: Ib qho kev qhia luv luv txog Hydroxyethyl Cellulose (HEC) thiab nws qhov tseem ceeb hauv cov khoom siv hauv tsev. Piav qhia txog kev siv cov nplaum thiab cov stabilizers hauv ntau yam khoom siv rau cov neeg siv khoom. Ntu 1: HEC Adhesives Txheej txheem cej luam: Txhais HEC thiab nws cov khoom siv tshuaj lom neeg. Sib tham txog cov khoom nplaum ntawm HEC thiab...Nyeem ntxiv»