Re-dispersible polima ufa

Re-dispersible polima ufa (RDP) ndi mawonekedwe a ufa wouma a polima opangidwa omwe amatha kusakanikirana mosavuta ndi madzi kuti apange kubalalitsidwa kwa polima. RDP imagwiritsidwa ntchito ngati chowonjezera pazinthu zosiyanasiyana zomangira, kuphatikiza matope osakanizika owuma, zomatira matailosi, ndi njira zakunja zotsekereza ndi kumaliza (EIFS), chifukwa cha zinthu zake zabwino kwambiri, monga kugwirira ntchito bwino, kumamatira, komanso kusinthasintha.

RDP imapangidwa kuchokera ku ma polima opangidwa osiyanasiyana, monga vinyl acetate-ethylene (VAE), vinyl acetate-versatile monomer (VeoVa), ndi ma acrylics. Ma polima awa amapangidwa ndi ma polima mu sing'anga yamadzi kuti apange latex, yomwe kenako imawuma ndikusinthidwa kukhala ufa wabwino. Ufawu ukhoza kumwazikana mosavuta m'madzi kuti ukhale wobalalika wokhazikika wa polima.

The katundu RDP zimadalira mtundu wa polima ntchito, mlingo wa polymerization, tinthu kukula kugawa, ndi kukhalapo kwa zina zowonjezera. Nthawi zambiri, RDP imakana madzi abwino, kusinthasintha, kumamatira, komanso kumagwirizana ndi zida zina zomangira. Mtundu wa ufa wa RDP umalolanso kusungirako kosavuta, mayendedwe, ndi kusamalira.

Mumtondo wosakanizika wowuma, RDP imagwiritsidwa ntchito kukonza magwiridwe antchito, kumamatira, komanso kusinthasintha kwa matope. RDP ikhoza kupititsa patsogolo kusungidwa kwa madzi mumatope, zomwe zimapangitsa kuti ntchito ikhale yabwino komanso nthawi yowonjezera yotseguka. Kumamatira kwabwino koperekedwa ndi RDP kungathenso kuonjezera mphamvu ya mgwirizano pakati pa matope ndi gawo lapansi, zomwe zimapangitsa kuti pakhale nthawi yayitali komanso yokhalitsa.

Mu zomatira matailosi, RDP imagwiritsidwa ntchito kupititsa patsogolo mphamvu ya chomangira komanso kusinthasintha kwa zomatira. Mphamvu zomangira zomwe zimaperekedwa ndi RDP zitha kukulitsa kukana kukameta ubweya ndi peel, zomwe zimapangitsa kuti pakhale mgwirizano wamphamvu komanso wokhazikika pakati pa matailosi ndi gawo lapansi. Kusinthasintha kowonjezereka koperekedwa ndi RDP kungathandizenso kutengera kupsinjika komwe kumadza chifukwa cha kusintha kwa kutentha ndi chinyezi, kuchepetsa chiopsezo cha kusweka kapena delamination.

Mu EIFS, RDP imagwiritsidwa ntchito kupititsa patsogolo kumamatira, kusinthasintha, komanso kukana kwanyengo kwadongosolo. Kumamatira kopitilira muyeso koperekedwa ndi RDP kumatha kukulitsa mphamvu zamagwirizano pakati pa bolodi lotsekera ndi gawo lapansi, pomwe kusinthasintha kowonjezereka kungathandize kutengera kupsinjika komwe kumachitika chifukwa chakukula kwamafuta ndi kutsika. Kusasunthika kwamadzi koperekedwa ndi RDP kungathandizenso kuteteza madzi kulowa ndikuchepetsa kuwonongeka komwe kumachitika chifukwa cha kuzizira kwamadzi.

Kugwiritsa ntchito RDP muzomangamanga kuli ndi maubwino angapo. Choyamba, RDP imatha kukonza magwiridwe antchito a zida, zomwe zimapangitsa kuti zikhale zolimba komanso zokhalitsa. Chachiwiri, RDP imatha kukonza magwiridwe antchito ndi kasamalidwe ka zida, kuchepetsa chiopsezo cha zolakwika ndikuwongolera zokolola. Pomaliza, RDP imathanso kukonza magwiridwe antchito a chilengedwe cha zinthuzo, monga kuchepetsa kuchuluka kwa ma volatile organic compounds (VOCs) omwe amatulutsidwa panthawi yogwiritsira ntchito.

Pomaliza, re-dispersible polymer powder (RDP) ndiwowonjezera komanso wogwiritsidwa ntchito kwambiri pazomangira. RDP imatha kukonza magwiridwe antchito, kumamatira, komanso kusinthasintha kwa matope osakanizika owuma, zomatira matailosi, ndi EIFS, zomwe zimapangitsa kuti ikhale yolimba komanso yokhalitsa. Kugwiritsa ntchito RDP muzomangamanga kuli ndi maubwino angapo, kuphatikiza magwiridwe antchito, magwiridwe antchito, komanso magwiridwe antchito a chilengedwe.