Redispersible polymer poda (RDP) icopolymer yevinyl acetate uye ethylene inogadzirwa kuburikidza nekupfapfaidza kuomesa maitiro. Icho chinhu chakakosha mumhando dzakasiyana-siyana dzekuvaka, kupa zvirinani kunamatira, kuchinjika uye kusimba kune esimende-yakavakirwa zvigadzirwa. Kugadzirwa kwemapolymer powders anodzokororwa kunosanganisira matanho akati wandei.
1. Kusarudzwa kwezvinhu:
Vinyl acetate-ethylene copolymer: Iyo huru mbishi yeRDP ndeye copolymer yevinyl acetate uye ethylene. Iyi copolymer yakasarudzwa nekuda kwayo yakanakisa yekunamira zvimiro uye kugona kuwedzera kuchinjika uye kuoma kwezvinhu esimende.
2. Emulsion polymerization:
Maitiro ekugadzira anotanga ne emulsion polymerization, umo vinyl acetate uye ethylene monomers inoumbwa pamberi pevatangi uye stabilizers.
Iyo emulsion polymerization process inodzorwa nekuchenjera kuti iwane inodiwa molecular uremu, kuumbwa, uye copolymer chimiro.
3. Kuita uye copolymerization:
Vinyl acetate uye ethylene monomers vanoita muhupo hwechigadziriso chekugadzira copolymer.
Iyo copolymerization maitiro akakosha kuwana mapolymer ane aidiwa zvivakwa, zvinosanganisira yakanaka firimu-yekugadzira zvivakwa uye zvakare dispersibility.
4. Kupfapfaidza kuomesa:
Iyo emulsion inobva yaiswa pasi pekupfapfaidza kuomesa maitiro. Izvi zvinosanganisira kupfapfaidza emulsion mukamuri inopisa, iyo mvura inoputika, ichisiya zvimedu zvakasimba zvepolymer inodhindwa.
Kupfapfaidza mamiriro ekuomesa, senge tembiricha uye kuyerera kwemhepo, zvinonyatsodzorwa kuti ive nechokwadi chekuumbwa kwemahara-kuyerera akatsetseka poda particles.
5. Kurapwa kwepamusoro:
Kurapa kwepamusoro kunowanzo shandiswa kuvandudza kugadzikana kwekuchengetedza uye kudhindwazve kwepolymer poda.
Hydrophobic additives kana anodzivirira colloids anowanzo shandiswa mukurapa kwepamusoro kudzivirira particle agglomeration uye kuwedzera kupararira kwehupfu mumvura.
6. Kudzora kwehutano:
Matanho akasimba ekudzora emhando anoitwa mukati mekugadzira maitiro. Maparamita akadai sekugovera saizi yechikamu, kuwanda kwehuwandu, zvakasara zvemonomeri zvemukati uye tembiricha yegirazi inotariswa kuti ive nechokwadi chekuenderana kwechigadzirwa.
7. Packaging:
Iyo yekupedzisira redispersible polymer poda inoiswa mumidziyo inodzivirira hunyoro kudzivirira kunyura kwemvura, izvo zvinogona kukanganisa kuita kwayo.
Zvishandiso zveRedispersible Polymer Powders:
RDP inoshandiswa mumhando dzakasiyana-siyana dzekuvaka zvinosanganisira mataira adhesives, self-leveling compounds, exterior insulation finishing systems (EIFS) uye simende madhaka.
Iyo poda inokwidziridza zvimiro zvakaita sekudzivirira kwemvura, kuchinjika uye kunamatira, zvichibatsira kuvandudza kuita kwese uye kusimba kwezvivakwa izvi zvekuvaka.
mukupedzisa:
Redispersible polymer poda chinhu chakasiyana-siyana chine zvakakosha mashandisirwo muindasitiri yekuvaka. Kugadzirwa kwayo kunosanganisira kungwarira kusarudzwa kwezvinhu zvakabikwa, emulsion polymerization, kupfapfaidza kuomesa, kurapwa kwepamusoro uye matanho akasimba ekudzora emhando.
Kugadzirwa kweadhispersible polymer poda idanho rakaomarara rinoda kurongeka uye kutarisisa kune zvakadzama kuti uwane chigadzirwa chemhando yepamusoro chine zvivakwa zvinodiwa pakuvaka maapplication.
Nguva yekutumira: Zvita-18-2023