Kev tsim cov roj liab polymer yog cov txheej txheem nyuaj uas cuam tshuam ntau theem, txhua tus yog qhov tseem ceeb rau kev ua tiav cov khoom uas xav tau thiab ua tau zoo ntawm cov khoom kawg.
1. Taw qhia rau recispersible polymer hmoov
A. Kev Txhais Lus thiab Daim Ntawv Thov
Redispersible polymer hmoov yog finely av polymer hais tias tuaj yeem yooj yim tawg hauv dej los ua kom ruaj khov emulsions. Cov hmoov no tau siv dav siv hauv cov khoom siv uas tsim kho xws li Mortars, cov nplaum thiab cov khoom lag luam zoo li lawv txhim kho thiab yoog raws cov khoom lag luam no.
B. Cov Khoom Siv Yooj Yim
Cov khoom xyaw tseem ceeb ntawm cov liab liab polymer hmoov suav nrog:
Polymer Binder: Cov BOLMER BINDER yog lub ntsiab tivthaiv yog lub copolymer ntawm vinyl acetate thiab ethylene (vae) lossis lwm yam haum polymer. Qhov no muab cov khoom lag luam kawg cov khoom lag luam thiab cov adixedion.
Kev Tiv Thaiv Kev Tiv Thaiv: Ntxiv cov stabilizers lossis tiv thaiv kev tiv thaiv kom tiv thaiv polymer hais los ntawm agglomerating thiab tswj khoom ruaj khov thaum lub sij hawm cia.
Ntxiv: Ntau yam ntxiv, xws li Dispersants, Yas Yas, thiab Thickeners, tuaj yeem suav nrog txhawm rau txhim kho cov khoom tshwj xeeb ntawm cov hmoov.
2. Kev Tsim Kho Cov Txheej Txheem
A. Emulsion Polymerization Polymerization
Monomer xaiv: Thawj kauj ruam cuam tshuam nrog kev xaiv monomers rau cov tshuaj tiv thaiv polymerization, feem ntau vinyl acetate thiab ethylene.
Emulsification: Siv surfactants rau emulsify monomers hauv dej los ua ib qho ruaj khov emulsion.
Polymerization: Tus pib ntxiv rau cov emulsion los pib cov tshuaj tiv thaiv polymerization. Cov polymer hais tawm thiab thaum kawg ua cov ntawv sau polymer.
Cov ntsiab lus tshaj tawm cov ntsiab lus: Cov kauj ruam ntxiv xws li tswj kav Ph thiab qhov kub yog qhov tseem ceeb rau kev ua tiav cov khoom xav tau ntawm cov polymer.
B. Txau Kom Qhuav
Emulsion concentration: concentrating polascer emulsion rau ib cov khib nyiab tshwj xeeb cov ntsiab lus haum rau tshuaj tsuag kom qhuav.
Txau kom qhuav: muaj cov emulsion zoo yog atomized rau hauv cov tee dej zoo thiab qhia rau hauv lub thermal qhuav chamber. Cov dej yaj, tawm hauv qab cov khoom polymer.
Qhov loj me me tswj: Txhim kho ntau yam tsis xws li pub tus nqi pub noj thiab nozzle tsim los tswj cov particle loj ntawm lub ntsej muag.
C. hmoov tom qab ua
Ntxiv cov colids tiv thaiv: Cov kev tiv thaiv kev tiv thaiv feem ntau ntxiv rau hmoov kom tiv thaiv particle agglomeration thiab txhim kho kev rov qab.
Ntxiv: Lwm yam kev ntxiv tuaj yeem qhia tau nyob rau theem no los txhim kho cov khoom tshwj xeeb ntawm cov hmoov.
3. Kev tswj kom zoo thiab tshuaj ntsuam
A. Kev tshawb xyuas me me
Laser differraction: Cov txheej txheem Laser sib txawv feem ntau siv los ntsuas cov particle loj li cas ntawm refispersible hmoov.
MENSCOPY: Cov metopcopic yog tuaj yeem muab kev pom rau hauv particle morpleology thiab cov teeb meem agglomeration.
B. Kev Ntsuam Xyuas RecisPersibility
Dej Redisispersion Xeem: Sib tov cov hmoov nrog dej los ntsuas qhov muaj peev xwm ua kom muaj kev ruaj khov.
Kev Ntsuam Xyuas Kev Pom: Ntsuas cov tsos ntawm cov hmoov uas redispersed, suav nrog txhua koog clumps lossis agglomerates.
C. Tshuaj Ntsuam Xyuas
Polymer muaj pes tsawg leeg: cov txuj ci xws li Fourier Transform Infrared Spectroscopy (FTIR) tau siv los tshawb xyuas cov tshuaj lom neeg tshuaj lom neeg ntawm polymers.
Residual Monomer Cov ntsiab lus: Siv roj chromatography lossis lwm txoj hauv kev los txiav txim siab txog qhov muaj ntawm cov neeg uas tseem tshuav.
.. Cov kev sib tw thiab kev txiav txim siab
A. Kev cuam tshuam ib puag ncig
Xaiv cov khoom siv Raw: Xaiv ib puag ncig phooj ywg monomers thiab cov ntaub ntawv raw tuaj yeem txo cov kev sib raug zoo ib puag ncig ntawm kev tsim khoom.
Siv Zog Siv Zog: Txhim Kho Zog Siv, tshwj xeeb tshaj yog nyob rau hauv cov tshuaj tsuag kom qhuav theem, ua rau muaj kev ruaj khov.
B. Khoom lag luam
Polymer muaj pes tsawg leeg: kev xaiv polymer thiab nws txoj kev xaiv muaj feem cuam tshuam rau cov khoom ntawm recispersible hmoov.
Kev ntim khoom ruaj khov: Ntxiv cov tiv thaiv kev tiv thaiv tsim nyog yog qhov tseem ceeb kom tiv thaiv hmoov clumping thaum lub sijhawm cia.
5 lub ntsiab lus
Ua cov hmoov polymer polymer cuam tshuam nrog kev sib xyaw ua ke ntawm emulsion polymerization, tshuaj tsuag kom qhuav thiab ua cov kauj ruam tom qab. Kev ntsuas kev tswj hwm zoo, suav nrog kev ntsuas me me ntsha thiab kev ntsuas kev rov qab, yog qhov tseem ceeb los xyuas kom cov khoom lag luam yuav tsum muaj cov lus qhia tshwj xeeb. Kev ntsuas ib puag ncig ib puag ncig thiab cov khoom lag luam yog qhov tseem ceeb rau kev nce qib txuas ntxiv thiab cov ntawv sau ntawm cov hmoov av polymer hauv ntau yam kev lag luam.
Lub Sijhawm Post: Feb-19-2025