Cov txheej txheem ntau lawm ntawm rigispersible polymer hmoov

Cov txheej txheem ntau lawm ntawm redispersible polymer hmoov (RPP) cuam tshuam ntau theem, suav nrog polymerization, tshuaj tsuag kom qhuav, thiab ua tiav. Ntawm no yog ib tug txheej txheem cej luam ntawm cov txheej txheem ntau lawm:

1. Polymerization:

Cov txheej txheem pib nrog polymerization ntawm monomers los tsim cov polymer ruaj khov lossis emulsion. Qhov kev xaiv ntawm Monomers yog nyob ntawm cov khoom uas xav tau thiab cov ntawv thov ntawm RPP. Cov Monomers suav nrog cov vinyl acetate, ethylene, butyl acrylate, thiab methyl methacrylate.

1. Kev npaj monomer: Monomers yog huv thiab tov nrog dej, cov pib, thiab lwm yam ntxiv rau hauv cov hlab reactor.
2. Polymerization: tus monomer sib tov incegoes polymerization nyob rau hauv kev tswj kub, siab, thiab kev ntxhov siab. Cov teg pib pib cov tshuaj tiv thaiv polymerization, ua rau kev tsim cov saw polymer.
3. Stabilization: Surfactants lossis emulsifiers tau ntxiv rau cov tswj cov polymer dispersion thiab tiv thaiv kev sib cais los yog agglomeration ntawm polymer hais.

2. Txau kom qhuav:

Tom qab polymerization, cov polymer dispersion yog raug rau kom qhuav kom hloov nws mus rau hauv daim ntawv hmoov qhuav. Txau kom qhuav yuav cuam tshuam nrog kev rho tawm cov dispersion rau hauv cov mob zoo, uas yog tom qab ntawd qhuav hauv huab cua kub kub.

1. Atomization: lub polymer dispersion yog twj tshuaj tsuag nozzle, qhov twg nws yog atplized rau cov tee dej me me siv cov cua tshuab hluav taws xob.
2. Kom qhuav: cov tee dej tau qhia rau hauv chav qhuav, uas lawv tau nkag mus rau hauv cov huab cua kub (feem ntau rhuab rau kub ntawm 150 ° C). Kev nrawm nrawm ntawm cov dej los ntawm cov dej ntws los ua rau kev tsim cov khoom siv.
3. Sau cov khoom siv particle: cov lus qhuav yog sau los ntawm lub tshuab ziab khaub ncaws siv cua daj cua dub lossis hnab ntim hnab. Cov nplais zoo yuav dhau los tawm cov kev faib tawm ntxiv kom tshem tawm cov ntawv tshaj tawm thiab xyuas kom meej tias cov khoom faib me me.

3. Tom qab ua:

Tom qab tsuag tshuaj tsuag, RPP intergoes ua cov kauj ruam los txhim kho nws cov khoom thiab xyuas kom cov khoom ruaj khov.

1. Cua txias: Cov dej so qhuav rau chav sov kom tiv thaiv kev nqus dej noo thiab ua kom cov khoom ruaj khov.
2. NTIM: Lub thawv RPP txias rau hauv cov dej noo-tiv taus hnab lossis ntim kom tiv thaiv nws los ntawm noo noo thiab av noo.
3. Kev tswj kom zoo: RPP intergoes zoo tswj kev ntsuas tshuaj ntsuam xyuas nws lub cev, suav cov ntsiab lus me me, cov ntsiab lus noo noo, thiab cov ntsiab lus polymer.
4. Cia: Cov ntim ntim tau khaws cia rau hauv ib puag ncig tswj hwm kom tswj nws lub neej ruaj khov thiab txee rau cov neeg siv khoom.

Xaus:

Cov txheej txheem ntau lawm ntawm redispersible polymer hmoov yuav tsim cov polymerization ntawm cov tshuaj tsuag ua kom hloov cov dispersion rau hauv daim ntawv hmoov qhuav. Cov kauj ruam tom qab ua kom cov khoom lag luam zoo, ruaj khov, thiab ntim khoom rau kev cia thiab xa khoom. Tus txheej txheem no ua rau kev tsim khoom siv ntau yam thiab ntau yam kev lag luam RPPs siv hauv ntau yam kev lag luam, suav nrog kev tsim kho, pleev xim, cov nplaum, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab textiles, thiab cov ntawv nyeem.