Ntchito za redispersible polima ufa

Redispersible polima ufandi polima woyera ufa wopanda-othamanga womwe ukhoza kupangidwanso mosavuta ndikubalalika m'madzi kuti ukhale emulsion wokhazikika. Zitha kusakanikirana ndi zida zina za ufa monga simenti, mchenga, opepuka ophatikizika, etc. mu fakitale yopanga molingana ndi chiŵerengero china mumkhalidwe wouma kuti mupeze matope apamwamba komanso osavuta kugwiritsa ntchito simenti yowuma, zomwe zingachepetse kumanga pa malo. Zolakwika ndi zosokoneza mukasakaniza ndi kuyeza ndi emulsion.

Ntchito zisanu ndi imodzi za ufa wa polima wopangidwanso:

1. Kupititsa patsogolo mphamvu zomatira ndi mgwirizano

Muzinthu zouma za simenti, ndikofunikira kwambiri kuwonjezera ufa wa polima wotayika. Ndizodziwikiratu kupititsa patsogolo mphamvu zomangira ndi kugwirizana kwazinthuzo. Izi ndi chifukwa cha malowedwe a polima particles mu pores ndi capillaries a masanjidwewo simenti, ndi mapangidwe zabwino cohesive mphamvu ndi simenti pambuyo hydration. Chifukwa adhesion kwambiri wa polima utomoni palokha, akhoza kusintha adhesion wa mankhwala matope simenti kuti gawo lapansi, makamaka binders inorganic monga simenti amamangiriridwa ku magawo organic monga nkhuni, CHIKWANGWANI, PVC ndi EPS. Kuwongolera bwino kwa magwiridwe antchito kumakhala ndi zotsatira zoonekeratu.

2. Kupititsa patsogolo kupindika ndi kukana kwamphamvu

Mu mafupa olimba omwe amapangidwa ndi hydration ya matope a simenti, filimu ya polima ndi yotanuka komanso yolimba. Pakati pa tinthu tating'onoting'ono ta simenti, imagwira ntchito ngati cholumikizira chosunthika, chomwe chimatha kupirira katundu wopindika kwambiri ndikuchepetsa kupsinjika, kupangitsa kuti Kukhazikika komanso kupindika kukhale bwino.

3. Sinthani kukana kwamphamvu

Redispersible polima ufa, thermoplastic utomoni. Ndi filimu yofewa yomwe imakutidwa pamwamba pa matope, omwe amatha kuyamwa mphamvu yakunja ndikupumula popanda kusweka, potero kumapangitsa kuti matope azitha kukana.

4, kusintha hydrophobicity ndi kuchepetsa mlingo mayamwidwe madzi

Kuonjezera dispersible polima ufa akhoza kusintha microstructure wa matope simenti. Polima ake amapanga maukonde osasinthika popanga simenti ya simenti, kutseka capillary mu gel osakaniza simenti, kutsekereza kuyamwa kwa madzi, kumalepheretsa kulowa kwa madzi, potero kumapangitsa kuti zisawonongeke.

5. Sinthani kukana kuvala ndi kulimba

Kuwonjezera dispersible polima ufa akhoza kuonjezera wandiweyani chomangira pakati particles matope simenti ndi filimu polima. Kupititsa patsogolo mphamvu yolumikizana kumapangitsanso luso la matope kuti lipirire kupsinjika kwa kukameta ubweya, kotero kuti kuchuluka kwa mavalidwe kumachepetsedwa, kukana kuvala kumatheka, ndipo moyo wautumiki wa matopewo ukutalikitsidwa.

6. Sinthani kukhazikika kwa kuzizira komanso kupewa kusweka kwa zinthu

Redispersible polima ufa, pulasitiki wa utomoni wake thermoplastic, akhoza kuthana ndi kuwonongeka kwa kufutukuka kwa matenthedwe ndi kupindika komwe kumachitika chifukwa cha kusintha kwa kutentha kwa zinthu zamatope a simenti. Kugonjetsa zofooka za matope osavuta a simenti okhala ndi kuyanika kwakukulu kwa shrinkage ndi kusweka kosavuta, kungapangitse zinthuzo kukhala zosinthika, potero kumapangitsa kuti zinthuzo zikhale zokhazikika.