VAE Redispersible Latex Powder

Basic ntchitos:

RDP Powder ndi ufa wamadzi wonyezimira woyera kapena wosayera wopangidwa ndi kupopera-kuyanika emulsion yapadera yamadzi.

RDP ufa umapanga filimu itatha kubalalitsidwa ndipo imakhala ngati chomatira chachiwiri.Tcolloid yoteteza imatengedwa ndi matope (sidzawonongedwa ndi madzi filimuyo itapangidwa, kapena "kubalalitsidwa kwachiwiri").Tiye kupanga filimu polima utomoniasa kulimbikitsa zakuthupi, zimagawidwa mumtundu wonse wamatope, potero zimawonjezera mgwirizano, tiye compressive mphamvu ndi flexural mphamvu ya matope.

Kuwonjezera kwaRDP ufa pakutalikira kwa matopewo umathandizira kulimba kwa matope, komanso umapatsanso matopewo mphamvu yabwino yobalalika.Njira yolumikizira imadalira kutsatsa ndi kufalikira kwa macro mamolekyu pamtunda womata.

Pa nthawi yomweyo, aRDP ali ndi mlingo wakutiwakuti wa permeability.Pamodzi ndi cellulose ether, imalowa mokwanira pamwamba pa zinthu zapansi, kotero kuti maziko a pansi ndi pamwamba pa pulasitala yatsopano ali pafupi ndi ntchito yapamtunda, motero adsorbing Kuchita kwake kumawonjezeka kwambiri.Kuchepetsa zotanuka modulus ndikupunduka-kuthekera wa matope, ndi kuchepetsa kusweka.

Kukana kwa abrasion kwa matope:

Kukaniza abrasion makamaka chifukwa cha kukhalapo kwa guluu wambiri pamwamba pa matope.Ufa wa rabara umagwira ntchito ngati cholumikizira.Mapangidwe a mauna opangidwa ndi ufa wa rabara amatha kudutsa mabowo ndi ming'alu mumatope a simenti.Sinthani kulumikizana kwa zinthu zoyambira ndi zinthu za simenti ya hydration, potero kuwongolera kukana kwa abrasion.Perekani matope kukana kwambiri kwa alkali.

Udindo waRDP ufa mu putty, matope ndi tile glue:

Mkati ndi kunja kwa khoma putty ufa, matailosi zomatira, matailosi jointing agent, youma ufa mawonekedwe agent, kunja khoma kunja matenthedwe matope matope, matope odziyimira pawokha, matope okonza, matope okongoletsera, matope osalowa madzi ndi matope akunja otenthetsera owuma.It ndikupangitsa kuti matope a simenti asasunthike, ndikupangitsa kuti matope a simenti azitha kusinthasintha komanso nyonga yomangirira kuti ikane ndikuchedwetsa kupanga ming'alu ya simenti.Chifukwa 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.Chifukwa chake, matope owumitsidwa owumitsidwa amakhala ndi ntchito yabwino kuposa matope a simenti.Pali kusintha kwakukulu.

Udindo waRDP ufa mu putty makamaka mu zinthu zotsatirazi:

1. Kumamatira ndi makina a putty.RDPndi ufa binder opangidwa kuchokera wapadera emulsion (mkulu maselo polima) kutsitsi zouma.Ufa uwu ukhoza kukhala wofulumiraobalalitsidwanso mu emulsion atatha kukhudzana ndi madzi, ndipo ali ndi zinthu zofanana ndi emulsion yoyamba, ndiye kuti, filimu ikhoza kupangidwa pambuyo pa madzi.Kanemayu ali kusinthasintha mkulu, mkulu nyengo kukana ndi kukana zosiyanasiyana High adhesion kwa gawo lapansi.Kuonjezera apo, ufa wa latex wopanda madzi ukhoza kupanga matope kukhala ndi madzi abwino.

2. Kugwirizana kwa putty, kukana kwabwino kwambiri, kukana kwa alkali, kukana kwa abrasion, komanso kulimbitsa mphamvu yakusinthasintha.

3. Madzi ndi permeability wa putty.

4. Kusungirako madzi kwa putty, kuonjezera nthawi yotseguka, komanso kugwira ntchito.

5. Kutha kukana kwa putty komanso kulimba kwa putty.

Udindo waRDP ufa mu matope makamaka mu zinthu zotsatirazi:

1. Mphamvu yopondereza ndi mphamvu yosinthasintha yamatope.

2. Kuphatikizika kwa ufa wa latex pakukula kwa matope kumapangitsa kuti matopewo akhale olimba komanso amapatsanso matopewo mphamvu yabwino yobalalika.

3. Kumangirira kwa matope kumakhala bwino.Njira yolumikizira imadalira kutsatsa ndi kufalikira kwamacromolecules Pamwamba pomata.Pa nthawi yomweyi, ufa wa rabara uli ndi mlingo wina wa permeability.Pamodzi ndi cellulose ether, imalowa mokwanira pamwamba pa zinthu zapansi, kotero kuti maziko a pansi ndi pamwamba pa pulasitala yatsopano ali pafupi ndi ntchito yapamtunda, motero adsorbing Kuchita kwake kumawonjezeka kwambiri.

4. Kuchepetsa zotanuka modulus ndikupunduka-kuthekera matope ndi kuchepetsa kusweka.

5. Valani kukana kwa matope.Kukaniza abrasion makamaka chifukwa cha kukhalapo kwa guluu wambiri pamwamba pa matope.Ufa wa rabara umagwira ntchito ngati cholumikizira.Mapangidwe a mauna opangidwa ndi ufa wa rabara amatha kudutsa mabowo ndi ming'alu mumatope a simenti.Sinthani kulumikizana kwa zinthu zoyambira ndi zinthu za simenti ya hydration, potero kuwongolera kukana kwa abrasion.

6. Perekani matope kukana bwino kwa alkali.