Cov hmoov VAE RDP (Redispersible) polymer hmoov yog cov khoom siv ntxiv uas siv ntau hauv kev lag luam kev tsim kho. Nws yog ntxiv rau cov khoom siv cement xws li cov nplaum pobzeb, cov khoom sib xyaw ua ke thiab cov txheej txheem rwb thaiv tsev phab ntsa sab nraud kom txhim kho cov khoom xws li kev ua haujlwm tau zoo, kev nplaum thiab kev ywj pheej. Qhov loj me ntawm cov khoom me me, qhov ceev ntawm cov khoom loj thiab viscosity ntawm RD polymer hmoov yog cov yam ntxwv tseem ceeb uas cuam tshuam rau lawv cov kev ua tau zoo hauv cov ntawv thov no. Tsab xov xwm no yuav tsom mus rau txoj kev kuaj viscosity ntawm VAE hmoov RD polymer hmoov.
Viscosity yog txhais tias yog qhov ntsuas ntawm cov kua dej tsis kam rau kev ntws. Rau VAE hmoov RD polymer hmoov, viscosity yog ib qho tseem ceeb parameter cuam tshuam rau fluidity thiab workability ntawm cov cement sib tov. Qhov siab dua qhov viscosity, qhov nyuaj dua rau cov hmoov sib tov nrog dej, ua rau muaj cov pob thiab tsis tiav dispersion. Yog li ntawd, nws yog ib qho tseem ceeb heev kom tswj tau qib viscosity ntawm RD polymer hmoov kom ua tiav qhov zoo sib xws ntawm cov khoom kawg.
Txoj kev ntsuas viscosity rau VAE hmoov RD polymer hmoov yog ua tiav los ntawm kev siv lub rotational viscometer. Lub rotational viscometer ntsuas lub torque uas xav tau los tig lub spindle hauv cov qauv ntawm cov hmoov polymer uas dai rau hauv dej. Lub spindle tig ntawm qhov ceev tshwj xeeb thiab lub torque ntsuas hauv centipoise (cP). Qhov viscosity ntawm cov hmoov polymer ces suav raws li lub torque uas xav tau los tig lub spindle.
Cov kauj ruam hauv qab no piav qhia txog cov txheej txheem rau Txoj Kev Ntsuas Viscosity rau VAE Hmoov RD Polymer Hmoov.
1. Kev npaj cov qauv: Siv cov qauv hmoov RD polymer thiab hnyav kom ze li ntawm 0.1 g. Muab cov qauv no rau hauv lub thawv huv, qhuav thiab tsis muaj roj. Sau qhov hnyav ntawm lub thawv thiab cov qauv.
2. Muab cov hmoov polymer faib ua pawg: Muab cov hmoov polymer faib ua pawg rau hauv dej raws li cov lus qhia ntawm cov chaw tsim khoom. Feem ntau, cov hmoov polymer raug sib xyaw nrog dej siv lub tshuab sib tov ceev ceev. Sib tov cov hmoov polymer thiab dej tsawg kawg 5 feeb lossis kom txog thaum tau txais cov khoom sib xyaw zoo sib xws. Qhov ceev thiab lub sijhawm sib tov yuav tsum sib xws thoob plaws hauv qhov kev sim.
3. Kev ntsuas viscosity: siv lub rotational viscometer los ntsuas qhov viscosity ntawm cov hmoov polymer suspension. Qhov loj me thiab qhov ceev ntawm lub spindle yuav tsum tau xaiv raws li qhov viscosity ntawm cov hmoov polymer. Piv txwv li, yog tias viscosity qis dua xav tau, siv qhov loj me ntawm lub spindle thiab RPM siab dua. Yog tias viscosity siab dua xav tau, siv qhov loj me ntawm lub spindle thiab qhov ceev qis dua.
4. Kev Kho Kom Zoo: Ua ntej ntsuas, kho lub viscometer raws li cov lus qhia ntawm cov chaw tsim khoom. Qhov no suav nrog kev teeb tsa qhov xoom thiab kev kho nrog cov tshuaj txheem ntawm cov viscosity paub.
5. Ntsuas lub zog torque: Muab lub rotor tso rau hauv cov hmoov polymer kom txog thaum nws nyob hauv dej tag. Lub spindle yuav tsum tsis txhob kov hauv qab ntawm lub thawv. Pib tig lub spindle thiab tos kom lub zog torque nyeem ruaj khov. Sau lub zog torque nyeem hauv centipoise (cP).
6. Rov ua dua: Yam tsawg kawg peb qhov kev ntsuas rov ua dua tau coj los rau txhua tus qauv thiab qhov nruab nrab viscosity xam.
7. Kev Ntxuav: Tom qab ntsuas tiav lawm, ntxuav lub rotor thiab lub thawv kom huv si nrog dej thiab tshuaj ntxuav tes. Yaug nrog dej lim thiab ziab kom huv si.
Qhov viscosity ntawm RD polymer hmoov raug cuam tshuam los ntawm ntau yam xws li kub, pH thiab concentration. Yog li ntawd, nws yog ib qho tseem ceeb heev uas yuav tsum ntsuas viscosity raws li cov xwm txheej txheem. Tsis tas li ntawd, yuav tsum tau ntsuas viscosity tsis tu ncua kom ntseeg tau tias cov hmoov RD polymer ua haujlwm tau zoo tas li.
Hauv kev xaus, txoj kev ntsuas viscosity ntawm VAE hmoov RD polymer hmoov yog ib qho kev xeem tseem ceeb los txiav txim siab qhov fluidity thiab workability ntawm cov khoom siv cement. Kev sim yuav tsum tau ua los ntawm kev siv cov khoom siv thiab cov txheej txheem txheem kom tau txais cov txiaj ntsig raug thiab rov ua dua. Kev ntsuas viscosity yuav tsum tau ua tsis tu ncua kom ntseeg tau tias qhov zoo ntawm RD polymer hmoov.
Lub sijhawm tshaj tawm: Lub Rau Hli-25-2023