Redispersible polymer powder (RDP) ndi copolymer ya vinyl acetate ndi ethylene yopangidwa kudzera mu kuyanika kutsitsi. Ndiwofunika kwambiri pazomangamanga zosiyanasiyana, kupereka kumamatira bwino, kusinthasintha komanso kulimba kwa zinthu zopangidwa ndi simenti. Kupanga kwa ufa wa polima wopangidwanso kumaphatikizapo njira zingapo.
1. Kusankha zinthu zopangira:
Vinyl acetate-ethylene copolymer: Zopangira zazikulu za RDP ndi copolymer ya vinyl acetate ndi ethylene. Copolymer iyi idasankhidwa chifukwa cha zomatira zake zabwino kwambiri komanso kuthekera kowonjezera kusinthasintha komanso kulimba kwa zida za simenti.
2. Emulsion polymerization:
Njira yopanga imayamba ndi emulsion polymerization, momwe vinilu acetate ndi ethylene monomers ndi polymerized pamaso pa intiators ndi stabilizers.
The emulsion polymerization ndondomeko ndi mosamala ankalamulira kupeza kufunika maselo kulemera, zikuchokera, ndi copolymer dongosolo.
3. Zomwe zimachitika ndi copolymerization:
Vinyl acetate ndi ethylene monomers amachita pamaso pa chothandizira kupanga copolymer.
Njira ya copolymerization ndiyofunikira kuti mupeze ma polima okhala ndi zinthu zomwe mukufuna, kuphatikiza mawonekedwe abwino opangira filimu ndi redispersibility.
4. Kuyanika utsi:
The emulsion ndiye pansi kutsitsi kuyanika ndondomeko. Izi zimaphatikizapo kupopera mankhwala emulsion mu chipinda otentha, kumene madzi amasanduka nthunzi, kusiya olimba particles wa redispersible polima.
Zinthu zowumitsa zopopera, monga kutentha ndi kutuluka kwa mpweya, zimayendetsedwa bwino kuti zitsimikizire kuti pamakhala tinthu tating'ono ta ufa tomwe timayenda mwaufulu.
5. Chithandizo chapamwamba:
Thandizo lapamtunda nthawi zambiri limagwiritsidwa ntchito kupititsa patsogolo kukhazikika kosungirako komanso kufalikiranso kwa ufa wa polima.
Hydrophobic zowonjezera kapena zoteteza colloids nthawi zambiri ntchito padziko mankhwala kupewa tinthu agglomeration ndi kumapangitsanso ufa kubalalitsidwa m'madzi.
6. Kuwongolera khalidwe:
Njira zowongolera zowongolera bwino zimayendetsedwa nthawi yonse yopanga. Magawo monga kugawa kwa tinthu, kachulukidwe kachulukidwe, zotsalira za monomer ndi kutentha kwa magalasi zimawunikidwa kuti zitsimikizire kusasinthika kwazinthu.
7. Kuyika:
Ufa womaliza wa polima wopangidwanso umayikidwa m'mitsuko yotsimikizira chinyezi kuti apewe kuyamwa kwamadzi, zomwe zingasokoneze magwiridwe ake.
Kugwiritsa Ntchito Redispersible Polima Powder:
RDP imagwiritsidwa ntchito pazomangamanga zosiyanasiyana kuphatikiza zomatira matailosi, zodziyimira pawokha, makina omaliza otsekera kunja (EIFS) ndi matope a simenti.
Ufawu umapangitsa zinthu monga kukana madzi, kusinthasintha ndi kumamatira, kumathandizira kukonza magwiridwe antchito komanso kulimba kwa zida zomangira izi.
Pomaliza:
Redispersible polima ufa ndi zinthu zosunthika zomwe zimagwiritsidwa ntchito pomanga. Kupanga kwake kumaphatikizapo kusankha mosamala zipangizo, emulsion polymerization, kuyanika utsi, mankhwala pamwamba ndi okhwima khalidwe kulamulira miyeso.
Kupanga kwa ufa wa polima wopangidwanso ndi njira yovuta yomwe imafuna kulondola komanso kusamala mwatsatanetsatane kuti mupeze chinthu chamtengo wapatali chokhala ndi zinthu zofunika pakumanga.
Nthawi yotumiza: Dec-18-2023