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Nrog rau kev nce qib tas mus li ntawm kev lag luam thiab kev txhim kho thev naus laus zis, los ntawm kev qhia thiab kev txhim kho ntawm cov tshuab txau tshuaj khib txawv teb chaws, kev txau tshuaj thiab kev siv tshuab plastering tau tsim kho zoo heev hauv kuv lub teb chaws hauv xyoo tas los no. Kev txau tshuaj khib yog d ...Nyeem ntxiv»
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1. Cov tshuaj hydroxypropyl methylcellulose uas yog hom tshuaj lom neeg txhua hnub yog cov hmoov dawb lossis daj me ntsis, thiab nws tsis muaj ntxhiab, tsis qab thiab tsis muaj tshuaj lom. Nws tuaj yeem yaj rau hauv dej txias thiab sib xyaw cov kuab tshuaj ntawm cov organic kom tsim cov kua nplaum pob tshab. Cov kua dej muaj qhov chaw...Nyeem ntxiv»
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Hydroxyethyl cellulose (HEC) yog ib qho dawb lossis daj daj, tsis muaj ntxhiab, tsis muaj tshuaj lom fibrous lossis hmoov khoom. Nws yog ua los ntawm cov paj rwb nyoos lossis cov pulp refined soaked hauv 30% kua caustic soda. Tom qab ib nrab teev, nws raug coj tawm thiab nias. Nyem kom txog thaum qhov piv ntawm alkaline dej ncav cuag 1: 2.8, tom qab ntawd ...Nyeem ntxiv»
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1. Cov hmoov latex uas tawg tau dua hauv cov mortar muaj cov haujlwm dab tsi? Lus teb: Cov hmoov latex uas tawg tau dua yog pwm tom qab tawg thiab ua haujlwm ua cov nplaum thib ob los txhim kho kev sib txuas; cov colloid tiv thaiv raug nqus los ntawm lub kaw lus mortar (nws yuav tsis raug hais tias raug rhuav tshem tom qab pwm. Lossis tawg...Nyeem ntxiv»
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Cov tshuaj khib ntub yog cov cement, cov pob zeb me me, cov tshuaj sib tov, dej thiab ntau yam khoom sib xyaw txiav txim siab raws li kev ua tau zoo. Raws li qee qhov sib piv, tom qab ntsuas thiab sib tov hauv qhov chaw sib tov, nws raug thauj mus rau qhov chaw siv los ntawm lub tsheb sib tov, thiab muab tso rau hauv qhov tshwj xeeb Cov dej ntub ...Nyeem ntxiv»
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Cov tshuaj ntxiv ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm kev tsim cov tshuaj mortar qhuav, tab sis kev ntxiv cov tshuaj mortar qhuav ua rau tus nqi khoom siv ntawm cov khoom siv mortar qhuav siab dua li cov tshuaj mortar ib txwm muaj, uas suav txog ntau dua 40% ntawm tus nqi khoom siv hauv cov tshuaj mortar qhuav ...Nyeem ntxiv»
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Hydroxypropyl methylcellulose yog ua los ntawm paj rwb cellulose ntshiab heev los ntawm kev sib xyaw tshwj xeeb hauv qab alkaline, thiab tag nrho cov txheej txheem ua tiav hauv qab kev saib xyuas tsis siv neeg. Nws tsis yaj hauv ether, acetone thiab ethanol kiag li, thiab swells mus rau hauv ib qho meej lossis me ntsis cloudy collo...Nyeem ntxiv»
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Ib qho me me ntawm hydroxypropyl methylcellulose ether ua rau cov dej nyob hauv lub mortar kom txaus rau lub sijhawm los txhawb kev ua kom cov cement noo thiab txhim kho kev sib txuas ntawm lub mortar thiab lub substrate. Cov nyhuv ntawm qhov loj me ntawm cov khoom me me thiab lub sijhawm sib tov ntawm Hydroxypropyl Methyl Cellulose Ether ...Nyeem ntxiv»
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Cellulose ether yog ib hom khoom siv polymer ntuj tsim, uas muaj cov yam ntxwv ntawm emulsification thiab suspension. Ntawm ntau hom, HPMC yog ib qho uas muaj cov zis siab tshaj plaws thiab siv dav tshaj plaws, thiab nws cov zis tau nce sai. Nyob rau hauv xyoo tas los no, ua tsaug rau kev loj hlob ntawm...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»
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Hmoov nplaum Gypsum (hmoov qhuav sai) (Daim ntawv qhia 1) Cov khoom siv sib txuas (kg) Hmoov roj hmab uas tawg tau dua 5-5.5 Gypsum retarder 0.5-1 Paris plaster hmoov (qhov dawb tshaj 85) 750 Calcium hnyav (hmoov ya ob npaug) 250 Kev nplaum zoo, lub sijhawm qhib 20-30 feeb. Hmoov qhuav ...Nyeem ntxiv»
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Cov cellulose ether uas tsis yog ionic yog ib yam khoom siv tshuaj tseem ceeb uas xav tau los ntawm kev lag luam khoom siv hauv tsev thiab kev lag luam txheej. Tam sim no, nyob rau hauv keeb kwm yav dhau los ntawm kev nce ntxiv tas mus li ntawm tag nrho cov txiaj ntsig ntawm kev lag luam kev tsim kho hauv tsev thiab kev nthuav dav tas mus li ntawm cov txheej...Nyeem ntxiv»