Resin ea PVC e fumanoeng ho polymerization ha e tsitsa haholo ka lebaka la botsitso ba eona bo tlase ba mocheso le viscosity e phahameng ea ho qhibiliha.E hloka ho fetoloa pele e etsoa lihlahisoa tse felileng.Thepa ea eona e ka ntlafatsoa / ea fetoloa ka ho kenyelletsa li-additives tse 'maloa, joalo ka li-stabilizers tsa mocheso, li-stabilizer tsa UV, li-plasticizers, li-addifiers, li-filler, li-retardants tsa lelakabe, li-pigments, joalo-joalo.
Khetho ea li-additives tsena ho ntlafatsa thepa ea polymer e ipapisitse le tlhoko ea kopo ea ho qetela.Ka mohlala:
1.Plasticizers (Phthalates, Adipates, Trimellitate, joalo-joalo) e sebelisoa e le lisebelisoa tse nolofatsang ho matlafatsa ts'ebetso ea rheological hammoho le mechine (bothata, matla) ea lihlahisoa tsa vinyl ka ho phahamisa mocheso.Lintlha tse amang khetho ea li-plasticizers bakeng sa vinyl polymer ke: Khokahano ea Polymer; Folatility e tlase; litšenyehelo.
2.PVC e na le botsitso bo tlaase haholo ba mocheso le li-stabilizers li thusa ho thibela ho senyeha ha polymer nakong ea ho sebetsa kapa ho pepesehela khanya.Ha li kenngoa mochesong, metsoako ea vinyl e qala karabelo ea "dehydrochlorination" e potlakileng 'me li-stabilizer tsena li fokotsa HCl e hlahisoang e ntlafatsang bophelo ba polymer.Lintlha tse lokelang ho nahanoa ha ho khethoa mocheso o tsitsitseng ke: litlhoko tsa tekheniki; Tumello ea taolo; litšenyehelo.
3.Fillers li kenngoa ka har'a metsoako ea PVC ka mabaka a sa tšoaneng.Kajeno, filler e ka ba tlatsetso ea 'nete ea ts'ebetso ka ho fana ka boleng ka mekhoa e mecha le e khahlisang ka theko e tlase haholo e ka khonehang ea ho etsa.Li thusa ho: eketsa ho satalla le matla, ho ntlafatsa ts'ebetso ea ts'ebetso, ho eketsa mmala, opacity le conductivity le tse ling.
Calcium carbonate, titanium dioxide, letsopa le calcined, khalase, talc joalo-joalo ke mefuta e tloaelehileng ea li-filler tse sebelisoang ho PVC.
4.Mafura a ka ntle a sebelisoa ho thusa tsela e boreleli ea PVC e qhibiliha ka thepa ea ho sebetsa.ha litlolo tse ka hare li fokotsa viscosity ea ho qhibiliha, li thibela ho chesa le ho netefatsa 'mala o motle oa sehlahisoa.
5. Li-additives tse ling tse kang lithuso tsa ho sebetsa, li-addifiers tsa phello, li kenyelelitsoe ho ntlafatsa lisebelisoa tsa mochine hammoho le holim'a PVC.
Nako ea poso: Dec-13-2022