Kumvetsetsa kwathunthu kwa ufa wa polymer wa dispersible (VAE) ndi zotsatira zake pamatope owuma

Redispersible latex ufa amapangidwa ndi polima emulsion ndi kupopera kuyanika. Izo zimasakanizidwa ndi madzi mu matope a simenti, emulsified ndi omwazikana m'madzi, ndiyeno regenerates khola polima emulsion. Pambuyo pa ufa wa rabara ndi emulsified ndi kumwazikana m'madzi, madzi amasanduka nthunzi. Filimu ya polima imapangidwa mkati kuti ikhale yabwino ya matope. Mitundu yosiyanasiyana ya latex yopangidwanso imakhala ndi zotsatira zosiyana pamatope owuma a ufa.

Ndi zinthu ziti zamatope zomwe zitha kusinthidwa ndi ufa wa latex wopangidwanso?

1. Kupititsa patsogolo kukana kwamphamvu, magwiridwe antchito ndi kuvala kukana kwa matope

Mtondowo umadzazidwa ndi matope a simenti amatope, kuphatikizika kwa matope a simenti kumakhala bwino, ndipo kukana kuvala kumakhala bwino. Pansi pa mphamvu yakunja, imatha kuyambitsa kumasuka popanda kuwonongedwa. Mapepala a polima amatha kusungidwa mu kasamalidwe ka matope a simenti.

2. Kupititsa patsogolo kumamatira kwa zomangamanga zamatope

Tinthu tating'onoting'ono ta polima timanyowetsa, kotero kuti zigawo ziwiri za matope a simenti zimatha kuyenda paokha. Kuonjezera apo, ufa wa rabara umakhala ndi mphamvu yopangira mpweya.

3. Kupititsa patsogolo mphamvu yolumikizirana yolumikizana ndi matope olumikizana

Monga organic mankhwala zomatira, redispersible latex ufa akhoza kupanga mkulu compressive mphamvu ndi compressive mphamvu pa matabwa osiyanasiyana. Zimagwira ntchito yofunikira kwambiri pakumangirira matope a simenti ndi zinthu zopangira mankhwala (m'mimba, bolodi lotsekereza lotsekereza) komanso pamwamba pa bolodi yoyeretsa. Ufa wa mphira umagwiritsidwa ntchito kwambiri pamakina onse owongolera matope a simenti kuti apititse patsogolo kulumikizana kwa matope a simenti.

4. Limbikitsani kukalamba kwa matope, pewani kusungunuka kwamadzi, komanso kupewa matope a simenti kuti asang'ambe.

Ufa wa mphira ndi utomoni wa thermoplastic wokhala ndi kusinthasintha kwabwino, womwe ungapangitse matope kuthana ndi kuwonongeka komwe kumachitika chifukwa cha kutentha ndi kuzizira kwakunja, ndikupewa ming'alu mumatope chifukwa cha kusintha kwa kutentha.

5. Wonjezerani hydrophobicity ya matope ndikuchepetsa chinyezi

Ufa wa mphira umawonongeka mumatope a simenti ndi pamwamba, ndipo pepala la polima silophweka kuti libalalitsidwenso pambuyo pa chithandizo cha madzi, kutsekereza kulowetsedwa kwa madzi ndikuwongolera kusakwanira.

Kugwiritsa ntchito kwakukulu kwa ufa wa latex wopangidwanso:

Mkati ndi kunja kwa khoma putty ufa, matailosi zomatira, matailosi kuloza wothandizira, youma ufa mawonekedwe agent, kunja matenthedwe matope matope kwa makoma akunja, matope odziyimira pawokha, matope okonza, matope okongoletsera, matope osalowa madzi kunja kwa matenthedwe owuma osakaniza matope. Mumtondo, ndikuwongolera brittleness, zotanuka modulus ndi zofooka zina za matope a simenti, ndikupangitsa kuti matope a simenti akhale osinthika bwino komanso olimba omangika, kuti athe kukana ndikuchedwetsa kuphulika kwa matope a simenti. Popeza polima ndi matope kupanga interpenetrating maukonde dongosolo, mosalekeza polima filimu aumbike mu pores, amene kumalimbitsa mgwirizano pakati pa aggregates ndi midadada ena pores mu matope, kotero matope kusinthidwa pambuyo kuumitsa ndi bwino kuposa simenti matope. Pali kusintha kwakukulu.

Zogulitsa za ufa wa latex wopangidwanso:

1. Limbikitsani mphamvu yopindika ndi mphamvu yopindika yamatope

Filimu ya polima yopangidwa ndi Zhaojia redispersible polima ufa imakhala yabwino kusinthasintha. Mafilimu amapangidwa mu mipata ndi pamwamba pa matope a simenti kuti apange malumikizidwe osinthika. Tondo la simenti lolemera komanso lophwanyika limakhala zotanuka. Tondo wowonjezeredwa ndi ufa wopangidwanso ndi latex umakhala wokwera kangapo pakulimba komanso kusinthasintha kuposa matope wamba.

2. Kupititsa patsogolo mphamvu zomangira ndi mgwirizano wamatope

Pambuyo redispersible latex ufa monga organic binder aumbike filimu, akhoza kupanga mkulu wamakomedwe mphamvu ndi kugwirizana mphamvu pa magawo osiyanasiyana. Zimagwira ntchito yofunikira pakumatira kwamatope kuzinthu zakuthupi (EPS, bolodi lotulutsa thovu) ndi magawo osalala apansi. Mafilimu opangidwa ndi mphira wa mphira wa polima amagawidwa mumatope onse ngati chinthu cholimbikitsa kuti awonjezere mgwirizano wa matope.

3. Kupititsa patsogolo kukana kwamphamvu, kulimba komanso kuvala kukana kwa matope

Tinthu tating'onoting'ono ta mphira timadzaza matope amatope, kuchuluka kwa matope kumawonjezeka, ndipo kukana kuvala kumatheka. Pansi pa mphamvu yakunja, idzatulutsa mpumulo popanda kuwonongedwa. Filimu ya polima ikhoza kukhalapo mpaka kalekale mumtondo.

4. Limbikitsani kusagwira ntchito kwa nyengo ndi kukana kuzizira kwamatope, ndikuteteza matope kuti asang'ambe

Ufa wa mphira ndi utomoni wa thermoplastic wokhala ndi kusinthasintha kwabwino, womwe ungapangitse matope kuti athane ndi kusintha kwa kuzizira kwakunja ndi malo otentha, ndikuteteza bwino kuti matope asagwe chifukwa cha kusintha kwa kutentha.

5. Sinthani hydrophobicity ya matope ndikuchepetsa kuyamwa kwamadzi

Ufa wa latex umapanga filimu pamatope amatope ndi pamwamba, ndipo filimu ya polima sidzabalalitsanso pambuyo poyang'aniridwa ndi madzi, zomwe zimalepheretsa kulowetsedwa kwa madzi ndikupangitsa kuti zisawonongeke. Special redispersible latex ufa ndi hydrophobic kwenikweni, bwino hydrophobic kwenikweni.

6. Kupititsa patsogolo ntchito yomanga matope

Pali mafuta opangira mafuta pakati pa tinthu tating'ono ta polima mphira, kotero kuti zigawo zamatope zimatha kuyenda paokha. Pa nthawi yomweyo, ufa mphira ali ndi inductive zotsatira pa mpweya, kupereka matope compressibility ndi kupititsa patsogolo ntchito yomanga matope.