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MHEC (Methyl Hydroxyethyl Cellulose) yog lwm yam polymer uas siv cellulose ua cov khoom ntxiv rau hauv cov cement. Nws muaj cov txiaj ntsig zoo ib yam li HPMC, tab sis muaj qee qhov sib txawv ntawm cov yam ntxwv. Cov hauv qab no yog cov ntawv thov ntawm MHEC hauv cov cementitious plasters: Wa...Nyeem ntxiv»
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RDP (Redispersible Polymer Hmoov) yog cov hmoov ntxiv uas feem ntau siv rau hauv cov ntaub ntawv siv hauv kev tsim kho, tshwj xeeb tshaj yog hauv cov khoom siv cement xws li mortars, adhesives thiab vuas pobzeb. Nws muaj cov polymer resins (feem ntau yog ua los ntawm vinyl acetate thiab ethylene) thiab ntau yam additives. RDP hmoov yog feem ntau ...Nyeem ntxiv»
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Methylhydroxyethylcellulose (MHEC) yog ib qho khoom siv ntxiv rau hauv cov khoom siv cement xws li mortar thiab concrete. Nws yog ib feem ntawm tsev neeg ntawm cellulose ethers thiab yog rho tawm los ntawm cellulose ntuj los ntawm cov txheej txheem hloov kho tshuaj lom neeg. MHEC feem ntau yog siv ua cov khoom ua kom tuab, khaws dej ...Nyeem ntxiv»
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HPMC, tseem hu ua hydroxypropyl methylcellulose, yog ib qho tshuaj uas yog los ntawm tsev neeg ntawm cellulose ethers. Nws yog los ntawm cellulose, ib qho polymer ntuj pom nyob rau hauv cov nroj tsuag cell phab ntsa. HPMC yog dav siv hauv kev lag luam kev tsim kho vim nws cov khoom siv ntau yam. HPMC feem ntau yog siv ua ...Nyeem ntxiv»
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Vinyl acetate ethylene (VAE) copolymer redispersible hmoov yog ib qho polymer hmoov siv dav hauv kev lag luam kev tsim kho. Nws yog ib qho hmoov ntws dawb uas tsim los ntawm kev tsuag ziab ib qho sib xyaw ntawm vinyl acetate monomer, ethylene monomer thiab lwm yam khoom ntxiv. VAE copolymer redispersible hmoov feem ntau yog ...Nyeem ntxiv»
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Hydroxypropyl methyl cellulose (HPMC) yog ib qho polymer uas tsis yog ionic, ib qho cellulose ether uas tsis yog ionic ua los ntawm cov khoom siv polymer ntuj cellulose. Cov khoom no tsis muaj ntxhiab, tsis muaj saj, tsis muaj tshuaj lom dawb, tuaj yeem yaj rau hauv dej txias los ua cov kua nplaum pob tshab, nrog rau kev tuab, kev sib txuas, kev faib tawm...Nyeem ntxiv»
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Cov hmoov putty sab hauv thiab sab nraud rau phab ntsa, cov nplaum rau pobzeb, cov tshuaj txhuam rau pobzeb, cov tshuaj txhuam qhuav rau nruab nrab, cov tshuaj txhuam rwb thaiv tsev sab nraud rau phab ntsa sab nraud, cov tshuaj txhuam uas nws tus kheej teeb tsa, cov tshuaj txhuam kho, cov tshuaj txhuam dai kom zoo nkauj, cov tshuaj txhuam uas tsis ntub dej rau sab nraud rau rwb thaiv tsev sab nraud rau cov tshuaj txhuam qhuav sib xyaw. Hauv cov tshuaj txhuam, nws...Nyeem ntxiv»
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Hmoov putty yog ib hom khoom siv kho kom zoo nkauj hauv tsev, cov khoom tseem ceeb yog hmoov talcum thiab kua nplaum. Txheej dawb ntawm qhov chaw ntawm chav dawb uas nyuam qhuav yuav yog putty. Feem ntau qhov dawb ntawm putty yog siab tshaj 90 ° thiab qhov zoo yog siab tshaj 330 °. Putty yog ib hom khoom siv hauv paus siv rau...Nyeem ntxiv»
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Hauv cov mortar sib xyaw ua ke, tsuav yog me ntsis cellulose ether tuaj yeem txhim kho kev ua tau zoo ntawm cov mortar ntub, nws tuaj yeem pom tias cellulose ether yog cov khoom siv tseem ceeb uas cuam tshuam rau kev ua tau zoo ntawm mortar. Kev xaiv ntawm ntau hom sib txawv, ntau viscosities, ntau pa ...Nyeem ntxiv»
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Thaum ua thiab siv cov hmoov putty, peb yuav ntsib ntau yam teeb meem. Niaj hnub no, qhov peb tab tom tham txog yog tias thaum cov hmoov putty sib xyaw nrog dej, koj do ntau npaum li cas, cov putty yuav nyias dua, thiab qhov tshwm sim ntawm kev sib cais dej yuav loj heev. Qhov ua rau muaj teeb meem no...Nyeem ntxiv»
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Nyob rau hauv xyoo tas los no, ntau cov hmoov roj hmab resin, cov hmoov roj hmab uas muaj zog tiv taus dej thiab lwm cov hmoov roj hmab pheej yig heev tau tshwm sim hauv kev ua lag luam los hloov cov tshuaj VAE emulsion ib txwm muaj (vinyl acetate-ethylene copolymer), uas yog tshuaj tsuag-qhuav thiab ua los ntawm cov hmoov roj hmab rov ua dua tshiab. Disperse...Nyeem ntxiv»
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Hydroxypropyl methylcellulose (HPMC) yog cov cellulose ether uas tsis yog ionic ua los ntawm cov khoom siv polymer ntuj cellulose los ntawm ntau cov txheej txheem tshuaj lom neeg. Lawv yog cov hmoov dawb tsis muaj ntxhiab, tsis muaj saj thiab tsis muaj tshuaj lom uas swells rau hauv cov kua colloidal meej lossis me ntsis pos huab hauv dej txias. Nws muaj t...Nyeem ntxiv»