Redispersible Polima Powder (RDP)ndi mkulu maselo polima ufa, kawirikawiri anapangidwa polima emulsion ndi kutsitsi kuyanika. Ili ndi katundu wa redispersibility m'madzi ndipo imagwiritsidwa ntchito kwambiri pomanga, zokutira, zomatira ndi minda ina. Makina ogwiritsira ntchito Redispersible Polymer Powder (RDP) amapezeka makamaka posintha zida zopangira simenti, kupititsa patsogolo mphamvu zomangira, ndikuwongolera ntchito yomanga.
1. Zoyambira ndi katundu wa Redispersible Polymer Powder (RDP)
Zomwe zimapangidwira Redispersible Polymer Powder (RDP) ndi emulsion ya polima, yomwe nthawi zambiri imapangidwa kuchokera ku ma monomers monga acrylate, ethylene, ndi vinyl acetate. Ma polima mamolekyuwa amapanga tinthu tating'onoting'ono kudzera mu emulsion polymerization. Pa kuyanika kutsitsi, madzi amachotsedwa kuti apange ufa wa amorphous. Mafawawa amatha kumwaziridwanso m'madzi kuti apange ma polima okhazikika.
Makhalidwe akulu a Redispersible Polymer Powder (RDP) ndi awa:
Kusungunuka kwamadzi ndi kupezekanso: Imatha kumwazikana mwachangu m'madzi kuti ipange yunifolomu ya polima colloid.
Zowonjezereka zakuthupi: Powonjezera Redispersible Polymer Powder (RDP), mphamvu yomangirira, kulimba kwamphamvu komanso kukana kwa zinthu monga zokutira ndi matope zimapita patsogolo kwambiri.
Kukana kwa nyengo ndi kukana kwa mankhwala: Mitundu ina ya Redispersible Polymer Powder (RDP) imakana kwambiri kuwunikira kwa UV, madzi ndi dzimbiri la mankhwala.
2. Njira zogwirira ntchito za Redispersible Polymer Powder (RDP) muzinthu zopangidwa ndi simenti
Kupititsa patsogolo mphamvu zomangira Ntchito yofunikira yomwe Redispersible Polymer Powder (RDP) amachita pazida zopangira simenti ndikuwonjezera mphamvu yolumikizana. Kugwirizana pakati pa simenti phala ndi polima kubalalitsidwa dongosolo chimathandiza polima particles kuti bwino kutsatira pamwamba pa simenti particles. Mu microstructure ya simenti pambuyo kuumitsa, polima mamolekyu kumapangitsanso kugwirizana mphamvu pakati particles simenti kudzera interfacial kanthu, potero kupititsa patsogolo kugwirizana mphamvu ndi compressive mphamvu ya zipangizo simenti ofotokoza.
Kusinthasintha kosinthika komanso kukana kwa ming'alu Redispersible Polymer Powder (RDP) kumatha kupititsa patsogolo kusinthika kwa zida zopangira simenti. Zida zopangira simenti zikauma ndikuwumitsidwa, mamolekyu a polima mu phala la simenti amatha kupanga filimu kuti awonjezere kulimba kwa zinthuzo. Mwanjira iyi, matope a simenti kapena konkire samakonda ming'alu akamakhudzidwa ndi mphamvu zakunja, zomwe zimapangitsa kuti zisawonongeke. Kuphatikiza apo, mapangidwe a filimu ya polima amathanso kusintha kusintha kwa zinthu za simenti kumalo akunja (monga kusintha kwa chinyezi, kusintha kwa kutentha, etc.).
Kusintha kagwiridwe ka ntchito yomanga Kuphatikizika kwa ufa wa guluu wogawikanso kumatha kupititsa patsogolo ntchito yomanga zinthu zopangidwa ndi simenti. Mwachitsanzo, kuwonjezera ufa wa guluu wosakanizika kumatope owuma kumatha kupititsa patsogolo magwiridwe antchito ake ndikupangitsa kuti ntchito yomanga ikhale yosavuta. Makamaka muzochita monga kupenta pakhoma ndi kumata matailosi, madzi amadzimadzi ndi kusunga madzi kwa slurry kumalimbikitsidwa, kupeŵa kulephera kwa mgwirizano chifukwa cha kutuluka msanga kwa madzi.
Kupititsa patsogolo kukana kwa madzi ndi kukhazikika Kupangidwa kwa filimu ya polima kumatha kulepheretsa kulowa kwa madzi, potero kumapangitsa kuti madzi asawonongeke. M'malo ena amadzi kapena othira madzi, kuwonjezera kwa ma polima kumatha kuchedwetsa kukalamba kwa zinthu zopangidwa ndi simenti ndikuwongolera magwiridwe antchito anthawi yayitali. Kuphatikiza apo, kukhalapo kwa ma polima kumathanso kukonza kukana kwa chisanu, kukana kwa dzimbiri, ndi zina zambiri, ndikuwonjezera kulimba kwa nyumbayo.
3. Kugwiritsa ntchito Redispersible Polymer Powder (RDP) m'magawo ena
Mtondo wosakanizika wowuma Mu matope osakanizidwa owuma, kuwonjezera kwa Redispersible Polymer Powder (RDP) kumatha kukulitsa kumamatira, kukana ming'alu ndi ntchito yomanga ya matope. Makamaka m'minda ya kunja kwa khoma kutchinjiriza dongosolo, matailosi yomangira, etc., kuwonjezera mlingo woyenera wa Redispersible Polima Powder (RDP) kuti youma wosakaniza matope chilinganizo akhoza kwambiri kusintha workability ndi khalidwe kumanga kwa mankhwala.
Zopangira zomangamanga Redispersible Polymer Powder (RDP) zimatha kupititsa patsogolo kumamatira, kukana madzi, kukana kwa nyengo, ndi zina zotero za zokutira zomangamanga, makamaka muzovala zomwe zimakhala ndi zofunikira zazikulu zogwirira ntchito monga zokutira kunja kwa khoma ndi zokutira pansi. Kuwonjezera Redispersible Polymer Powder (RDP) kumatha kupititsa patsogolo kapangidwe kake kakanema komanso kumamatira ndikukulitsa moyo wautumiki wa zokutira.
Zomatira Muzinthu zina zapadera zomatira, monga zomatira matailosi, zomatira za gypsum, ndi zina zotere, kuwonjezera Redispersible Polymer Powder (RDP) kumatha kupititsa patsogolo mphamvu zomangira ndikuwongolera kuchuluka kwa zomatira ndi ntchito yomanga.
Zipangizo zopanda madzi Muzinthu zopanda madzi, kuwonjezera kwa ma polima kumatha kupanga wosanjikiza wokhazikika wa filimu, kuteteza bwino kulowa kwa madzi, komanso kumapangitsa kuti madzi asagwire ntchito. Makamaka m'malo ena ofunikira kwambiri (monga kutsekereza madzi m'chipinda chapansi, kutsekereza madzi padenga, ndi zina zambiri), kugwiritsa ntchito Redispersible Polymer Powder (RDP) kumatha kupititsa patsogolo kwambiri kuletsa madzi.
Mchitidwe wa zochita zaRDP, makamaka kudzera mu mawonekedwe ake a redispersibility ndi polima kupanga filimu, amapereka ntchito zingapo mu zipangizo zopangira simenti, monga kulimbikitsa mphamvu zomangira, kuwongolera kusinthasintha, kupititsa patsogolo kukana kwa madzi, ndi kusintha ntchito yomanga. Kuonjezera apo, imasonyezanso ntchito zabwino kwambiri m'madera a matope osakaniza owuma, zokutira zomangamanga, zomatira, zipangizo zopanda madzi, etc. Choncho, kugwiritsa ntchito Redispersible Polymer Powder (RDP) muzomangamanga zamakono ndizofunika kwambiri.
Nthawi yotumiza: Feb-17-2025