Enqubweni yokukhiqiza yeIndwangu engalukiwe ye-PP, izici ezihlukahlukene zingase zithinte izici ezibonakalayo zomkhiqizo. Ukuhlaziya ubudlelwano phakathi kwalezi zici nokusebenza komkhiqizo kusiza ukulawula kahle izimo zenqubo nokuthola imikhiqizo yendwangu engalukiwe yekhwalithi ephezulu nesebenza kabanzi ye-PP. Ngezansi, umhleli wendwangu engalukiwe ka-Chengxin uzohlaziya kafushane izici eziyinhloko ezinethonya ezimpahleni ezibonakalayo ze-PP izindwangu ezingalukiwe, futhi wabelane nawo wonke umuntu:
1. Inkomba ye-Melt kanye nokusatshalaliswa kwesisindo samangqamuzana we-PP engeyona eyelukiwe ye-polypropylene chips
Izinkomba eziyinhloko zekhwalithi yama-polypropylene chips isisindo samangqamuzana, ukusatshalaliswa kwesisindo samangqamuzana, ukujwayela, inkomba yokuncibilika, kanye nokuqukethwe komlotha. Ama-PP chips asetshenziselwa ukuphotha anesisindo samangqamuzana phakathi kuka-100000 no-250000, kodwa umkhuba ubonise ukuthi izakhiwo ze-rheological zokuncibilika zingcono kakhulu uma isisindo samangqamuzana e-polypropylene sizungeze i-120000, futhi isivinini saso esiphezulu esivumelekile sokuphotha siphezulu. Inkomba yokuncibilika iyipharamitha ekhombisa izakhiwo ze-rheological zokuncibilika, kanye nenkomba yokuncibilika yama-chips e-polypropylene asetshenziselwai-spunbondngokuvamile phakathi kuka-10 no-50. Ngesikhathi senqubo yokuphotha, i-filament ithola kuphela okusalungiswa kokugeleza komoya okukodwa, futhi isilinganiso sokusalungiswa se-filament sinqunyelwe izakhiwo ze-rheological zokuncibilika.
Isisindo samangqamuzana sikhulu, okungukuthi inkomba encane yokuncibilika, i-rheological properties iyancipha. Isilinganiso esincane sokusalungiswa esitholwe yi-filament, sikhudlwana ubukhulu be-filament ye-filament etholwe ngaphansi kwenani elifanayo lokuncibilika elikhishwe ku-spinneret, okuholela ekuzizweleni kwesandla esiqinile kwendwangu ye-PP engalukiwe. Uma inkomba yokuncibilika iphezulu, i-viscosity yokuncibilika iyancipha, izakhiwo ze-rheological zinhle, futhi ukumelana nokwelula kunciphisa. Ngaphansi kwezimo ezifanayo zokwelula, ukuphindaphinda kokwelula kuyanda. Njengoba i-orientation yama-macromolecules ikhula, amandla okuphuka kwendwangu ye-PP engeyona eyelukiwe azokhula, futhi usayizi wefiber we-filament uzokwehla, okuholela ekuthunjweni okuthambile kwendwangu. Ngaphansi kwenqubo efanayo, iphezulu inkomba yokuncibilika kwe-polypropylene, iba mncane usayizi wayo wefayibha, futhi iba mkhulu amandla ayo okuphuka.
Ukusatshalaliswa kwesisindo sengqamuzana kuvame ukukalwa ngesilinganiso (Mw/Mn) sesisindo esimaphakathi semolekyuli (Mw) ukuya enombolweni yesisindo sengqamuzana (Mn) se-polymer, eyaziwa njengevelu yokusabalalisa isisindo semolekyuli. I-value yokusabalalisa isisindo samangqamuzana amancane, izinzile kakhulu izakhiwo ze-rheological zokuncibilika kwayo, futhi izinzile kakhulu inqubo yokuphotha, ekhuthaza ukuthuthukisa isivinini sokuphotha. Iphinde ibe nokunwebeka okuncibilikisiwe okuphansi kanye ne-viscosity eqinile, enganciphisa ingcindezi yokuphotha, yenze i-PP ibe lula ukwelula futhi ibe lula, futhi ithole imicu ye-denier ecolekile. Ngaphezu kwalokho, ukufana kokwakheka kwewebhu kuhle, nokuzwakala kahle kwesandla nokufana.
2. PP izinga lokushisa lokuphotha kwendwangu engalukiwe
Ukusethwa kwezinga lokushisa lokuphotha kuncike kunkomba yokuncibilika kwezinto ezingavuthiwe kanye nezidingo zezakhiwo ezibonakalayo zomkhiqizo. Uma iphezulu inkomba yokuncibilika kwezinto ezingavuthiwe, izinga lokushisa elihambisanayo lokuphotha liyaphakama, futhi ngokuphambene nalokho. Izinga lokushisa elijikelezayo lihlobene ngokuqondile ne-viscosity yokuncibilika, futhi izinga lokushisa liphansi. I-viscosity yokuncibilika iphezulu, okwenza ukuphotha kube nzima futhi kujwayele ukukhiqiza imicu ephukile, eqinile noma eqinile, ethinta ikhwalithi yomkhiqizo. Ngakho-ke, ukuze unciphise i-viscosity yokuncibilika futhi uthuthukise izakhiwo zayo ze-rheological, indlela yokukhulisa izinga lokushisa ngokuvamile iyamukelwa. Izinga lokushisa elijikelezayo linomthelela omkhulu esakhiweni nasezindaweni zemicu. Lapho izinga lokushisa elijikelezayo liphansi, kulapho i-viscosity eqinile yokuncibilika ikhuphuka, kukhulu ukumelana nokushuba, futhi kuba nzima nakakhulu ukwelula umcu ukuze uthole usayizi ofanayo we-fiber.
Isikhathi sokuthumela: Mar-16-2024