Imikhiqizo enemibala yePulasitiki izobuna ngenxa yezici eziningi. Ukuphela kwemikhiqizo yepulasitiki enemibala kuhlobene nokumelana nokukhanya, ukumelana nomoya-mpilo, ukumelana nokushisa, ukumelana ne-asidi ne-alikhali kwe-toner, kanye nezici ze-resin esetshenzisiwe.
Okulandelayo ukuhlaziywa okuningiliziwe kwezinto ezifayo zombala wepulasitiki:
1. Ukukhanya kwe-colorant
Ukushesha kokukhanya kwe-colorant kuthinta ngqo ukuphela komkhiqizo. Ngemikhiqizo yangaphandle evezwe ukukhanya okuqinile, imfuneko yokukhanya (ukushesha ukukhanya) yezinga le-colorant esetshenzisiwe iyinkomba ebalulekile. Izinga lokushesha lokukhanya liphansi, futhi umkhiqizo uzobuna ngokushesha ngesikhathi sokusetshenziswa. Ibanga lokumelana nokukhanya elikhethelwe imikhiqizo emelana nesimo sezulu akumele libe ngaphansi kwamamaki ayisithupha, okungcono amamaki ayisikhombisa noma ayisishiyagalombili, futhi imikhiqizo yasendlini ingakhetha amamaki amane noma amahlanu.
Ukumelana okukhanyayo kwe-resin yenethiwekhi nakho kunomthelela omkhulu ekushintsheni kombala, futhi ukwakheka kwamangqamuzana kwe-resin kuyashintsha futhi kufiphale ngemuva kokukhanyiswa yimisebe ye-ultraviolet. Ukungeza izinto zokusimamisa ukukhanya ezifana nezinciphisi ze-ultraviolet ku-masterbatch kungathuthukisa ukumelana okukhanyayo kwemibala nemikhiqizo yepulasitiki enemibala.
2. Ukumelana nokushisa
Ukuzinza okushisayo kombala ongashisi ukushisa kubhekisa ezingeni lokulahleka kwesisindo esishisayo, ukushintsha kombala, nokubuna kombala ekushiseni okusebenzayo.
Imibala engaphili yakhiwa ngama-oxide ensimbi nosawoti, anokuqina okuhle kokushisa nokuqina kokushisa okukhulu. Imibala yezakhi ezihlanganisiwe izoshintsha ukwakheka kwamangqamuzana kanye nokubola okuncane ekushiseni okuthile. Ikakhulukazi yemikhiqizo ye-PP, PA, ye-PET, izinga lokushisa lokucubungula lingaphezu kuka-280 ℃. Lapho ukhetha imibala, umuntu kufanele anake ukumelana nokushisa kwe-pigment, futhi isikhathi sokumelana nokushisa kwe-pigment kufanele sicatshangwe ngakolunye uhlangothi. Isikhathi sokumelana nokushisa imvamisa yi-4-10min. .
3. Isidisi-magciwane
Ezinye izingulube zemvelo zibhekana nokuwohloka kwe-macromolecular noma ezinye izinguquko ngemuva kwe-oxidation futhi kancane kancane ziyaphela. Le nqubo i-oxidation ephezulu yokushisa ngesikhathi sokucubungula, kanye ne-oxidation lapho uhlangabezana nama-oxidants aqinile (njenge-chromate ku-chrome yellow). Ngemuva kwechibi, kusetshenziswa i-azo pigment ne-chrome yellow ngokuhlangana, umbala obomvu uzophela kancane kancane.
4. Ukumelana ne-acid ne-alkali
Ukufiphala kwemikhiqizo epulasitiki enemibala kuhlobene nokumelana kwamakhemikhali kwe-colorant (ukumelana ne-asidi ne-alikhali, ukumelana nokwehlisa i-oxidation). Isibonelo, i-molybdenum chrome red ayimelani ne-asidi, kodwa iyazwela kuma-alkalis, futhi i-cadmium ephuzi ayimelani ne-asidi. Lezi zingulube zombili nezinhlayiya ze-phenolic zinomphumela oqinile wokunciphisa imibala ethile, ethinta kakhulu ukumelana nokushisa nokumelana nesimo sezulu kwalaba bantu ababalayo futhi kubangele ukuphela.
Ngokufiphala kwemikhiqizo enemibala yepulasitiki, kufanele kukhethwe ngokuya ngezimo zokucubungula nezidingo zokusebenzisa imikhiqizo yepulasitiki, ngemuva kokuhlolwa okuphelele kwezakhiwo ezibalulwe ngenhla zezingulube ezidingekayo, odayi, ama-surfactants, ama-dispersants, izinhlaka zokuphatha kanye nama-anti- izithasiselo zokuguga.
