Udindo wazobalalikansopolimaufamu putty powder: ili ndi zomatira zolimba komanso zamakina, kusalowa madzi kwapadera, kutsekemera, komanso kukana kwa alkali komanso kukana kuvala, ndipo imatha kupititsa patsogolo kusunga madzi ndikuwonjezera nthawi yotsegula kuti ikhale yolimba.
1. Zotsatira za matope osakanikirana
1) Kupititsa patsogolo zomangamanga.
2) Kusungirako madzi owonjezera kuti muwonjezere simenti.
3) Kuchulukitsa ntchito.
4) Pewani kusweka msanga.
2. Zotsatira za kuumitsa matope
1) Chepetsani zotanuka modulus ya matope ndikuwonjezera kuyanjana ndi gawo loyambira.
2) Wonjezerani kusinthasintha ndikukana kusweka.
3) Sinthani kukana kwa ufa kugwa.
4) Hydrophobic kapena kuchepetsa kuyamwa madzi.
5) Wonjezerani kumamatira kumalo oyambira.
The redispersible latex ufa amapanga polima emulsion kukhudzana ndi madzi.Panthawi yosakaniza ndi kuyanika, emulsion imachotsedwanso madzi m'thupi.Ufa wa latex umagwira ntchito mu putty powder, ndipo njira yophatikizira ya simenti ya hydration ndi kupanga filimu ya latex powder imamalizidwa munjira zinayi:
①Pamene redispersible latex ufa wosakanikirana wosakanikirana ndi madzi mu putty ufa, amamwazikana mu particles zabwino polima;
② Gel simenti imapangidwa pang'onopang'ono kudzera mu hydration yoyamba ya simenti, gawo lamadzimadzi limadzaza ndi Ca (OH) 2 yomwe imapangidwa panthawi ya hydration, ndipo tinthu tating'onoting'ono tomwe timapangidwa ndi ufa wa latex timayikidwa pamwamba pa gel osakaniza. unhydrated simenti tinthu osakaniza;
③ Pamene simenti imalowetsedwanso madzi, madzi a capillary pores amachepetsa, ndipo tinthu tating'onoting'ono ta polima timatsekeredwa pang'onopang'ono mu pores, ndikupanga wosanjikiza mwamphamvu pamwamba pa simenti gel / unhydrated simenti tinthu osakaniza ndi filler;
④ Pansi pa zochita za hydration reaction, mayamwidwe osanjikiza ndi kutuluka kwamadzi pamtunda, chinyezicho chimachepetsedwanso, ndipo zigawo zomangika zimaphatikizidwa kukhala filimu yopyapyala, ndipo zinthu zomwe zimakhudzidwa ndi hydration zimalumikizidwa palimodzi kuti apange maukonde athunthu.Dongosolo lophatikizika lomwe limapangidwa ndi simenti ya hydration ndi mapangidwe a filimu ya latex powder amathandizira kukana kwamphamvu kwa putty.
Kuchokera pamawonekedwe ogwiritsira ntchito, mphamvu ya putty yomwe imagwiritsidwa ntchito ngati gawo la kusintha pakati pa kutsekemera kwakunja ndi zokutira kunja kwa khoma lakunja sikuyenera kukhala lalitali kuposa la matope opaka pulasitala, apo ayi n'zosavuta kutulutsa zowonongeka.Mu dongosolo lonse la kutchinjiriza, kusinthasintha kwa putty kuyenera kukhala kokwera kuposa kwa gawo lapansi.Mwanjira iyi, putty amatha kusinthira bwino kusinthika kwa gawo lapansi ndikubisa mapindikidwe ake omwe amapangidwa ndi zinthu zakunja, kuchepetsa kupsinjika, komanso kuchepetsa kuthekera kwa kusweka ndi kusenda kwa zokutira.
Nthawi yotumiza: Oct-27-2022