Utoto wa PVC
Pali mitundu inayi ya utomoni wa PVC wophatikizidwa ndi njira ya polymerization
1. Kuyimitsidwa kalasi PVC
2. Emulsion Grade PVC
3. PVC yopangidwa ndi polymerized
4. Copolymer PVC
Kuyimitsidwa kalasi PVC
Mtundu wofala kwambiri, Suspension grade PVC imapangidwa ndi ma polymerizing m'malovu a Vinyl Chloride monomer yoyimitsidwa m'madzi.Polymerization ikatha, slurry imayikidwa pakati ndipo keke ya PVC imawumitsidwa pang'onopang'ono ndi makina apadera otenthetsera kuti asawononge utomoni wosakhazikika.Kukula kwa tinthu ting'onoting'ono kwa utomoni kumayambira 50-250 ma microns ndipo kumakhala ndi ma popcorn ngati zida zomwe zimatenga Pulasitiki mosavuta.Mapangidwe a PVC particles akhoza kusinthidwa mwa kusankha oyenera kuyimitsa wothandizira ndi Polymerization Catalyst.Mitundu yocheperako imagwiritsidwa ntchito kwambiri pamapulogalamu apamwamba kwambiri a Rigid kapena Osapangidwa ndi PVC monga mapaipi a PVC, Windows, Sidings, Ductings.Kuyimitsidwa magiredi a coarser tinthu tinthu ndi zomangira porous kwambiri zimatenga zochulukira za Plasticiser kupanga dryblend pa kutentha otsika monga 80oC.The kwambiri porous mitundu ntchito Plasticised ntchito monga Zingwe, Nsapato, Soft Calendared Sheeting ndi Mafilimu etc.
Emulsion kalasi PVC
Emulsion Polymerised PVC ndizomwe Paste Grade Resin ili ndipo izi zimangogwiritsidwa ntchito pa Plastisols.Phala kalasi utomoni ndi zabwino kwambiri tinthu kukula PVC opangidwa ndi kutsitsi kuyanika ndi Emulsion wa PVC mu Madzi mofanana mmene mkaka ufa amapangidwa.Paste grade resin imafuna mphamvu zambiri kuti ipange ndipo ndiyokwera mtengo kwambiri kuposa Suspension resin.phala kalasi utomoni amanyamula emulsifying mankhwala ndi catalysts ndi izo.Chifukwa chake ndi yocheperako kuposa Suspension Polymerized kapena Bulk Polymerized PVC.Mphamvu zamagetsi za Paste grade resin plastisols ndizosauka kwambiri kuposa Suspension Resin Compounds.Kumveka bwino ndikosauka kuposa Suspension kapena Bulk PVC.Paste grade resin ndi yaying'ono m'mapangidwe ake, ndipo satenga Pulasitiki wambiri kutentha kutentha.Kutentha kopitilira 160-180oC kumafunika kuyendetsa pulasitiki mu utomoni pakuchiritsa.Paste grade Resin imagwiritsidwa ntchito kwambiri pa Cushion Vinyl Floorings of wide wide.Magawo osiyanasiyana a phala lopangidwa mwapadera amakutidwa pagawo loyenera (Direct Coating) kapena pa Release Paper (Transfer coating).Zigawozo zimasakanizidwa mosalekeza mu uvuni wautali ndikukulungidwa pambuyo pochotsa pepala.Pansi pansi pabwino pakhoza kukhala ndi chovala cholimba cha semitransparent pamwamba pa zigawo zosindikizidwa ndi thovu zomwe zimakhala pamwamba pa malaya odzaza kwambiri kuti apange makulidwe.Zambiri zowoneka bwino komanso zolemera zimatheka ndipo izi zikuyimira mathero apamwamba a Vinyl Flooring.
PVC yopangidwa ndi polymerized
Bulk Polymerization imapereka mawonekedwe oyera kwambiri a PVC resin popeza palibe ma emulsifying kapena kuyimitsira omwe amagwiritsidwa ntchito.Amagwiritsidwa ntchito makamaka powonekera.Amapangidwa makamaka m'magulu otsika a K, monga Zolemba Zopanda pulasitiki za PVC za Blister Packaging ndi makanema ena a Calendered / Extruded Transparent amakonzedwa bwino kuchokera kumagulu otsika a K.Kuwongolera muukadaulo wa Suspension resin watulutsa Bulk PVC posachedwa.
Copolymer PVC
Vinyl Chloride ndi copolymerized ndi ma comonomers ngati Vinyl acetate amapereka utomoni wosiyanasiyana wokhala ndi mawonekedwe apadera.PVAc kapena Copolymer ya Vinyl Chloride ndi Vinyl acetate ndiyo yofunika kwambiri.Kusungunuka kwabwino mu zosungunulira za PVAc kumapangitsa kukhala chisankho chachikulu cha Inks Yosindikizira ya Vinyl ndi simenti zosungunulira.Pali kugwiritsa ntchito kwapadera kwambiri kwa PVAc mu Kuyika matayala pansi ndipo ndiye utomoni wosankha wa matailosi a Vinyl Asbestos.Resin kwenikweni ndi binder osati chinthu chachikulu.Ndi Copolymer Resin ndizotheka kupanga matailosi apansi okhala ndi Zodzaza ngati Asbestos ndi Calcium Carbonate yowerengera mpaka 84% ndi Copolymer ndi zowonjezera zina zotsika mpaka 16%.Miyezo yotereyi sizingatheke ndi Suspension resin popeza kusungunuka kwake kumasungunuka ndipamwamba kwambiri ndipo sikungathe kuvala ndi kuyika milingo yayikulu yotere ya inert filler.Sitima zapamtunda zapadera zimafunikira pa matayala a asbestos a Vinyl.Komabe, popeza Asbestos sakukonda, zinthu zotere zatha pang'onopang'ono.
Nthawi yotumiza: Apr-07-2022