Ngokusetshenziswa kabanzi kwezikhwama zepulasitiki ezilukiwe ze-PP, umthamo wokukhiqiza wePP izikhwama ezilukiweyoliyakhula, okuholela ekunyukeni kwenani lezikhwama zemfucuza. Ukugaywa kabusha kwalezi zikhwama zikadoti kuyisinyathelo esisebenzayo sokunciphisa izindleko zokukhiqiza, ukuvikela indawo ezungezile, nokusebenzisa izinsiza ngokugcwele. Eminyakeni yamuva, abakhiqizi abaningi baye benza ucwaningo kule ndawo.
Le ngxoxo igxile ekugayweni kabusha kwe-PP izikhwama ezilukiweyo. Izinto ezilahlwayo zibhekisela kudoti wepulasitiki we-PP olungele ukukhiqizwaPP izikhwama ezilukiweyo. Lena indlela yokusetshenziswa kwemfucuza ehlukahlukene enezidingo eziphezulu; ayikwazi ukuxutshwa nezinye izinhlobo zepulasitiki, futhi ayikwazi ukuqukatha udaka, isihlabathi, ukungcola, noma ukungcola kwemishini. Inkomba yayo yokuncibilika kwayo kufanele ibe phakathi kwebanga le-2-5 (akuwona wonke amapulasitiki e-PP afanelekile). Imithombo yayo ikabili ngokuyinhloko: izinto ezilahlwayo ezivela ohlelweni lokukhiqiza izikhwama ezilukiwe ze-PP kanye nezikhwama ze-PP ezigaywe kabusha, njengezikhwama zikamanyolo, izikhwama zokudla, izikhwama zikasawoti, njll.
2. Izindlela Zokugaywa kabusha
Kunezindlela ezimbili eziyinhloko zokugaywa kabusha: ukuncibilika kwe-pellets kanye ne-extrusion granulation, ne-extrusion granulation iyona evame kakhulu. Izinqubo zazo zombili izindlela zimi kanje.
2.1 Ncibilikisa indlela yeGranulation
Imfucumfucu -- ukukhetha nokugeza -- ukomiswa -- ukusika kube yimicu -- imbudumbudu enesivinini esikhulu (ukuphakela -- ukuncipha kokushisa -- ukufafaza kwamanzi -- imbudumbudu) Ukulahla nokupakisha.
2.2 Indlela ye-Extrusion Granulation
Imfucumfucu -- ukukhetha -- ukuwasha -- ukomiswa -- ukusika kube imicu -- i-extrusion eshisiwe -- ukupholisa kanye ne-pelletizing -- ukupakisha.
Imishini esetshenziswa endleleni ye-extrusion iyi-extruder eyenziwe ngokwayo enezigaba ezimbili. Ukususa igesi ekhiqizwa ngesikhathi sokuchithwa kwezinto, i-extruder ephumayo ingasetshenziswa futhi. Ukususa ukungcola kokulahlwayo, isikrini semeshi engu-80-120 kufanele sisetshenziswe ekugcineni kokukhipha i-extruder. Izimo zenqubo ye-extrusion egaywe kabusha iboniswa kuthebula.
Izinga lokushisa le-extruder kufanele lilawulwe kahle, lingabi phezulu kakhulu noma liphansi kakhulu. Ukushisa ngokweqile kubangela kalula ukuthi izinto ziguge futhi ziphuzi, noma ngisho ne-carbonize futhi zibe mnyama, okuzothinta kakhulu amandla nokubukeka kwepulasitiki; izinga lokushisa elinganele libangela ukwenziwa kwepulasitiki okungekuhle, izinga eliphansi le-extrusion, noma ngisho nokungakhiqizi kwezinto ezibonakalayo, futhi kujwayeleke kakhulu ukulimaza isikrini sokuhlunga. Izinga lokushisa elifanele le-extrusion eligaywe kabusha kufanele linqunywe ngokusekelwe emiphumeleni yenkomba yenkomba yokuncibilika kwenqwaba yemfucuza egaywe kabusha ethathwe isampula futhi yahlolwa.
3. Ukusetshenziswa Kwezinto Ezigaywe Kabusha Kanye Nomthelela Wazo Ekusebenzeni Kwesikhwama Se-PP: Ukuguga okushisayo ngesikhathi sokucutshungulwa kwepulasitiki kuthinta kakhulu ukusebenza, ikakhulukazi ezikhwameni ezilukiwe ze-PP esenziwe kabusha ezimbili noma ngaphezulu zezinqubo ezishisayo. Kuhlanganiswe nokuguga kwe-UV ngesikhathi sokusetshenziswa ngaphambi kokugaywa kabusha, ukusebenza kwawohla ngokuphawulekayo. Ngakho-ke,PP izikhwama ezilukiweyoayikwazi ukuphinda isetshenziswe unomphela. Uma izinto ezigaywe kabusha zisetshenziswa zodwa ukukhiqiza izikhwama ze-PP, zingagaywa kabusha izikhathi ezintathu kuphela. Njengoba kunzima ukunquma inani lezikhathi imfucuza egaywe kabusha isicutshungulwe, ukuze kuqinisekiswe ikhwalithi yesikhwama se-PP, ngisho nezikhwama ezinezidingo eziphansi, ingxube yezinto ezimsulwa nezinto ezigaywe kabusha kufanele zisetshenziswe ekukhiqizeni. Isilinganiso sengxube kufanele sinqunywe ngokusekelwe kudatha yokulinganisa yangempela yezinto ezimbili. Inani lezinto ezigaywe kabusha ezisetshenziswayo lithinta ngqo ikhwalithi yentambo eyisicaba yesikhwama se-PP. Izinga lezikhwama ezilukiwe lincike kumandla aqinile aqinile kanye nobude bezintambo eziyisicaba. Izinga likazwelonke (GB8946-88) licacisa amandla entambo eyisicaba >=0.03 N/denier kanye nokwelulwa okungu-15% -30%. Ngakho-ke, ekukhiqizeni, cishe u-40% wezinto ezigaywe kabusha ngokuvamile zengezwa. Ngokuya ngekhwalithi yezinto ezigaywe kabusha, lokhu kwesinye isikhathi kunganyuswa kube ngu-50% -60%. Nakuba ukwengeza izinto ezigaywe kabusha kwehlisa izindleko zokukhiqiza, kulimaza ikhwalithi yezikhwama. Ngakho-ke, inani lezinto ezigaywe kabusha ezingezwe kufanele lifanele, liqinisekise ikhwalithi. 4. Ukulungiswa kwenqubo yokudweba okusekelwe ekusetshenzisweni kwezinto ezigaywe kabusha: Ngenxa yokucubungula ukushisa okuphindaphindiwe kanye nokuguga kwe-UV ngesikhathi sokusetshenziswa kwesikhathi eside, inkomba yokuncibilika kwe-PP egaywe kabusha iyanda ngomjikelezo ngamunye wokucubungula. Ngakho-ke, lapho ungeza inani elikhulu lezinto ezigaywe kabusha kumpahla engakazalwa, izinga lokushisa eliphuma ngaphandle, izinga lokushisa lekhanda elifayo, kanye nezinga lokushisa elinwebekayo kanye nokusetha kufanele kwehliswe ngokufanelekile uma kuqhathaniswa nezinto ezimsulwa. Inani lokulungiswa kufanele linqunywe ngokuhlola inkomba yokuncibilika kwengxube yezinto ezintsha nezigaywe kabusha. Ngakolunye uhlangothi, ngenxa yokuthi izinto ezigaywe kabusha zenza izinyathelo eziningi zokucutshungulwa, isisindo sazo samangqamuzana siyehla, okuholela enanini elikhulu lamaketanga amafushane wamangqamuzana, futhi ziye zabhekana nezinqubo eziningi zokwelula nokuqondiswa. Ngakho-ke, enqubweni yokukhiqiza, isilinganiso sokwelula kufanele sibe ngaphansi kunesohlobo olufanayo lwezinto ezintombi. Ngokuvamile, isilinganiso esinwebekayo sezinto ezingabonakali izikhathi ezingu-4-5, kuyilapho ngemva kokwengeza izinto ezigaywe kabusha ezingu-40% ngokuvamile izikhathi ezingu-3-4. Ngokufanayo, ngenxa yokwanda kwenkomba yokuncibilika kwezinto ezigaywe kabusha, i-viscosity iyancipha, futhi izinga lokukhipha liyanda. Ngakho-ke, ngaphansi kwesivinini esifanayo sesikulufa nezimo zokushisa, isivinini sokudweba kufanele sisheshe kancane. Ekuhlanganisweni kwezinto ezintsha nezindala zokusetshenziswa, kubalulekile ukuqinisekisa ukuxuba okufanayo; ngesikhathi esifanayo, izinto zokusetshenziswa ezinezinkomba ezifanayo zokuncibilika kufanele zikhethwe ukuze kuhlanganiswe. Umehluko omkhulu kuma-indices ancibilikayo kanye namazinga okushisa ancibilikayo asho ukuthi izinto ezimbili zokusetshenziswa azikwazi ukwenziwa ipulasitiki ngesikhathi esisodwa ngesikhathi se-plasticizing extrusion, okuzothinta kakhulu isivinini sokwelula i-extrusion, okuholela ekutheni izinga eliphezulu le-scrap, noma ngisho nokwenza ukukhiqizwa kungenzeki.
Njengoba kushiwo ngenhla, ukugaywa kabusha nokusetshenziswa kabusha kwePPlukiweizikhwamakungenzeka ngokuphelele ngokukhethwa kwempahla ngokucophelela, ukwakhiwa kwenqubo efanele, kanye nokulawulwa kwesimo senqubo okunengqondo nokunembayo. Ngeke kuthinte ikhwalithi yomkhiqizo, futhi izinzuzo zezomnotho zibaluleke kakhulu.
Isikhathi sokuthumela: Nov-13-2025